AgentTools Hub

Calculate X% of Y, what percent X is of Y, and the percent change between two values — with step-by-step working shown. Use this when an agent needs to percent of a number, ratios and percent change. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "x": {
      "type": "number",
      "description": "X"
    },
    "y": {
      "type": "number",
      "description": "Y"
    },
    "op": {
      "type": "string",
      "enum": [
        "percent_of",
        "what_percent",
        "change"
      ],
      "description": "Operation"
    }
  },
  "required": [
    "x",
    "y",
    "op"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Encode text to base64 or decode base64 back to text. Full UTF-8 support including emoji and non-Latin scripts. Use this when an agent needs to uTF-8 safe base64 in both directions. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "direction": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ],
      "description": "Direction"
    }
  },
  "required": [
    "text",
    "direction"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Reference database of all 250 countries and territories: ISO 3166-1 codes, capitals, regions, population, area, currencies, languages, TLDs and calling codes. Look up a single country or list by region. Use this when an agent needs to 250 countries: codes, capitals, currencies, populations. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "country": {
      "type": "string",
      "description": "Leave empty to list countries instead."
    },
    "region": {
      "type": "string",
      "enum": [
        "",
        "Africa",
        "Americas",
        "Asia",
        "Europe",
        "Oceania",
        "Antarctic"
      ],
      "description": "Region filter"
    },
    "limit": {
      "type": "number",
      "description": "Max rows"
    }
  },
  "required": [
    "country",
    "region",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the final sale price and the amount saved for any price and percent-off discount, with the working shown. Use this when an agent needs to sale price and savings from a percent off. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "price": {
      "type": "number",
      "description": "Original price"
    },
    "discount": {
      "type": "number",
      "description": "Discount %"
    }
  },
  "required": [
    "price",
    "discount"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the tip for any bill, the grand total, and how much each person pays when splitting. Defaults to a 15% tip. Use this when an agent needs to tip amount, total and per-person split. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "bill": {
      "type": "number",
      "description": "Bill amount"
    },
    "tipPercent": {
      "type": "number",
      "description": "Tip %"
    },
    "people": {
      "type": "number",
      "description": "Split between"
    }
  },
  "required": [
    "bill",
    "tipPercent",
    "people"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Add VAT to a net amount or remove VAT from a gross amount. Standard VAT rates for 36 countries are built in, or override with any custom rate. Use this when an agent needs to add or remove VAT at standard rates for 36 countries. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "amount": {
      "type": "number",
      "description": "Amount"
    },
    "country": {
      "type": "string",
      "enum": [
        "AT",
        "BE",
        "BG",
        "BR",
        "CA",
        "CH",
        "CY",
        "CZ",
        "DE",
        "DK",
        "EE",
        "ES",
        "FI",
        "FR",
        "GB",
        "GR",
        "HR",
        "HU",
        "IE",
        "IT",
        "JP",
        "LT",
        "LU",
        "LV",
        "MT",
        "NL",
        "NO",
        "NZ",
        "PL",
        "PT",
        "RO",
        "SE",
        "SI",
        "SK",
        "US",
        "ZA"
      ],
      "description": "Country (standard rate)"
    },
    "op": {
      "type": "string",
      "enum": [
        "add",
        "remove"
      ],
      "description": "Direction"
    },
    "rate": {
      "type": "number",
      "description": "Custom rate % (optional)"
    }
  },
  "required": [
    "amount",
    "country",
    "op",
    "rate"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate Body Mass Index from weight (kg) and height (cm), with the WHO weight category and the healthy BMI weight range for your height. Use this when an agent needs to body Mass Index with WHO category. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "weight": {
      "type": "number",
      "description": "Weight (kg)"
    },
    "height": {
      "type": "number",
      "description": "Height (cm)"
    }
  },
  "required": [
    "weight",
    "height"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Count the total days between two dates, plus the breakdown in weeks and days and in calendar years, months and days. Use this when an agent needs to days, weeks and calendar time between two dates. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "start": {
      "type": "string",
      "description": "ISO format YYYY-MM-DD"
    },
    "end": {
      "type": "string",
      "description": "ISO format YYYY-MM-DD"
    }
  },
  "required": [
    "start",
    "end"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate a person's exact age in calendar years, months and days from their date of birth, plus total days lived. Reference date defaults to today (UTC). Use this when an agent needs to exact age in years, months and days. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "birth": {
      "type": "string",
      "description": "YYYY-MM-DD"
    },
    "on": {
      "type": "string",
      "description": "Defaults to today, YYYY-MM-DD"
    }
  },
  "required": [
    "birth",
    "on"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the fixed monthly payment for a loan from its principal, annual interest rate and term in years, plus total repaid and total interest (annuity formula). Use this when an agent needs to monthly payment, total cost and interest for any loan. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "principal": {
      "type": "number",
      "description": "Loan amount"
    },
    "annualRate": {
      "type": "number",
      "description": "Annual rate %"
    },
    "years": {
      "type": "number",
      "description": "Term (years)"
    }
  },
  "required": [
    "principal",
    "annualRate",
    "years"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Project the future value of a deposit with compound interest: choose annual, semi-annual, quarterly, monthly, weekly or daily compounding and see total interest earned. Use this when an agent needs to future value with any compounding frequency. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "principal": {
      "type": "number",
      "description": "Principal"
    },
    "annualRate": {
      "type": "number",
      "description": "Annual rate %"
    },
    "years": {
      "type": "number",
      "description": "Years"
    },
    "timesPerYear": {
      "type": "string",
      "enum": [
        "1",
        "2",
        "4",
        "12",
        "52",
        "365"
      ],
      "description": "Compounding"
    }
  },
  "required": [
    "principal",
    "annualRate",
    "years",
    "timesPerYear"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the liters of fuel a trip needs and its total cost from distance, consumption (L/100 km) and price per liter — with optional cost splitting between passengers. Use this when an agent needs to trip fuel and cost, splitable between people. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "distance": {
      "type": "number",
      "description": "Distance (km)"
    },
    "consumption": {
      "type": "number",
      "description": "Consumption (L/100km)"
    },
    "pricePerLiter": {
      "type": "number",
      "description": "Price per liter"
    },
    "people": {
      "type": "number",
      "description": "Split between"
    }
  },
  "required": [
    "distance",
    "consumption",
    "pricePerLiter",
    "people"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Estimate reading time from a word count at any reading speed. Defaults to 200 words per minute — the typical silent-reading speed for adults. Use this when an agent needs to how long a text takes to read, by word count. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "words": {
      "type": "number",
      "description": "Word count"
    },
    "wpm": {
      "type": "number",
      "description": "200 = silent reading · 130 = read aloud"
    }
  },
  "required": [
    "words",
    "wpm"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert between metric and imperial length units: kilometers, meters, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, inches and nautical miles. Use this when an agent needs to metric and imperial distance units, instantly. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "km",
        "m",
        "cm",
        "mm",
        "um",
        "nm",
        "mi",
        "yd",
        "ft",
        "in",
        "nmi"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "km",
        "m",
        "cm",
        "mm",
        "um",
        "nm",
        "mi",
        "yd",
        "ft",
        "in",
        "nmi"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert between weight and mass units: metric tons, kilograms, grams, milligrams, pounds, ounces and stones with exact international definitions. Use this when an agent needs to kilograms, pounds, ounces and more. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "t",
        "kg",
        "g",
        "mg",
        "lb",
        "oz",
        "st"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "t",
        "kg",
        "g",
        "mg",
        "lb",
        "oz",
        "st"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert between Celsius, Fahrenheit and Kelvin with exact formulas, reference points (freezing and boiling water) and step-by-step working. Use this when an agent needs to celsius, Fahrenheit and Kelvin, both ways. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Temperature"
    },
    "from": {
      "type": "string",
      "enum": [
        "c",
        "f",
        "k"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "f",
        "c",
        "k"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert digital storage units: bits, bytes, KB, MB, GB, TB (decimal, ×1000) and KiB, MiB, GiB, TiB (binary, ×1024) — both systems side by side. Use this when an agent needs to decimal (KB/MB/GB) and binary (KiB/MiB/GiB) units. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "TB",
        "GB",
        "MB",
        "KB",
        "B",
        "TiB",
        "GiB",
        "MiB",
        "KiB"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "TB",
        "GB",
        "MB",
        "KB",
        "B",
        "TiB",
        "GiB",
        "MiB",
        "KiB"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert speed units: kilometers per hour, miles per hour, meters per second, knots and feet per second with exact definitions. Use this when an agent needs to km/h, mph, m/s, knots and ft/s. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "kmh",
        "mph",
        "ms",
        "kn",
        "fts"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "kmh",
        "mph",
        "ms",
        "kn",
        "fts"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert area units: square millimeters, centimeters, meters and kilometers, hectares, acres, square feet and square miles. Use this when an agent needs to square meters, feet, acres, hectares. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "km2",
        "ha",
        "acre",
        "m2",
        "ft2",
        "mi2",
        "cm2"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "km2",
        "ha",
        "acre",
        "m2",
        "ft2",
        "mi2",
        "cm2"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert cooking and liquid volume units: milliliters, liters, cubic meters, US gallons, quarts, pints, cups, fluid ounces, tablespoons and teaspoons. Use this when an agent needs to liters, gallons, cups, milliliters. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "number",
      "description": "Value"
    },
    "from": {
      "type": "string",
      "enum": [
        "m3",
        "L",
        "ml",
        "gal",
        "qt",
        "pt",
        "cup",
        "floz",
        "tbsp",
        "tsp"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "m3",
        "L",
        "ml",
        "gal",
        "qt",
        "pt",
        "cup",
        "floz",
        "tbsp",
        "tsp"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert Unix epoch timestamps to ISO/UTC dates and back. Millisecond timestamps are detected automatically; invalid dates are rejected with clear errors. Use this when an agent needs to epoch seconds ↔ human dates, both directions. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "op": {
      "type": "string",
      "enum": [
        "to_date",
        "to_timestamp"
      ],
      "description": "Direction"
    },
    "value": {
      "type": "string",
      "description": "Timestamp or date"
    }
  },
  "required": [
    "op",
    "value"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert integers between any bases from 2 to 36 — binary, octal, decimal, hexadecimal and beyond — with BigInt precision (no limit on magnitude). Use this when an agent needs to binary, octal, decimal, hex — any base 2–36. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "string",
      "description": "Digits valid for the source base"
    },
    "from": {
      "type": "number",
      "description": "From base (2–36)"
    },
    "to": {
      "type": "number",
      "description": "To base (2–36)"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert numbers to Roman numerals (1–3999) and Roman numerals back to numbers, with strict validation that rejects non-standard forms like IIIM or VX. Use this when an agent needs to numbers ↔ Roman numerals, with validation. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "string",
      "description": "Number or numeral"
    },
    "op": {
      "type": "string",
      "enum": [
        "to_roman",
        "from_roman"
      ],
      "description": "Direction"
    }
  },
  "required": [
    "value",
    "op"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert text between nine letter cases: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE. camelCase boundaries are split automatically. Use this when an agent needs to camelCase, snake_case, kebab-case and more. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "style": {
      "type": "string",
      "enum": [
        "upper",
        "lower",
        "title",
        "sentence",
        "camel",
        "pascal",
        "snake",
        "kebab",
        "constant"
      ],
      "description": "Convert to"
    }
  },
  "required": [
    "text",
    "style"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Decode a JSON Web Token's header and payload to readable JSON. Pure decoding: signatures are NOT verified and no secret is needed. Claims like exp and iat are rendered as dates. Use this when an agent needs to decode header and payload — no verification. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "token": {
      "type": "string",
      "description": "header.payload.signature"
    }
  },
  "required": [
    "token"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Percent-encode text for safe inclusion in URLs and query strings, or decode percent-encoded text back. Uses the standard encodeURIComponent rules. Use this when an agent needs to percent-encoding for query strings and URLs. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "op": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ],
      "description": "Direction"
    }
  },
  "required": [
    "text",
    "op"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Validate JSON with precise error messages, pretty-print it with any indent, and inspect its top-level type and element counts. Use this when an agent needs to validate, pretty-print and inspect JSON. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "json": {
      "type": "string",
      "description": "JSON"
    },
    "indent": {
      "type": "number",
      "description": "Indent spaces"
    }
  },
  "required": [
    "json",
    "indent"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Reference database of HTTP response status codes with phrase, category and explanation. Look up a specific code or list a whole category (1xx–5xx). Use this when an agent needs to look up any HTTP status code's meaning. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "code": {
      "type": "number",
      "description": "Leave empty to list by category"
    },
    "category": {
      "type": "string",
      "enum": [
        "",
        "informational",
        "success",
        "redirect",
        "client-error",
        "server-error"
      ],
      "description": "Category"
    },
    "limit": {
      "type": "number",
      "description": "Max rows"
    }
  },
  "required": [
    "code",
    "category",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Look up MIME content types by type substring or file extension, or list a category — covering text, application, image, audio, video, font and multipart types used in web APIs. Use this when an agent needs to content-Type lookup by type or file extension. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "MIME substring or file extension"
    },
    "category": {
      "type": "string",
      "enum": [
        "",
        "text",
        "application",
        "image",
        "audio",
        "video",
        "font",
        "multipart",
        "model"
      ],
      "description": "Category"
    },
    "limit": {
      "type": "number",
      "description": "Max rows"
    }
  },
  "required": [
    "query",
    "category",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Convert between wei, kwei, mwei, gwei, microether, milliether and ether with exact BigInt arithmetic. Decimal strings of any magnitude convert without floating-point error. Use this when an agent needs to exact Ethereum unit conversion — no float errors. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "value": {
      "type": "string",
      "description": "Decimal string for exact precision"
    },
    "from": {
      "type": "string",
      "enum": [
        "wei",
        "kwei",
        "mwei",
        "gwei",
        "microeth",
        "millieth",
        "eth"
      ],
      "description": "From"
    },
    "to": {
      "type": "string",
      "enum": [
        "wei",
        "kwei",
        "mwei",
        "gwei",
        "microeth",
        "millieth",
        "eth"
      ],
      "description": "To"
    }
  },
  "required": [
    "value",
    "from",
    "to"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate a transaction's gas fee: gas units × gas price (gwei) gives the ETH cost, multiplied by the ETH price for USD. Exact BigInt math for the wei amounts. Use this when an agent needs to transaction cost in ETH and USD from gas × gwei. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "gasUnits": {
      "type": "number",
      "description": "Gas units"
    },
    "gweiPrice": {
      "type": "number",
      "description": "Gas price (gwei)"
    },
    "ethPriceUsd": {
      "type": "number",
      "description": "ETH price (USD)"
    }
  },
  "required": [
    "gasUnits",
    "gweiPrice",
    "ethPriceUsd"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate return on investment: profit (or loss) and the percentage return relative to the initial amount invested. Use this when an agent needs to return on investment as a percentage. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "initial": {
      "type": "number",
      "description": "Amount invested"
    },
    "final": {
      "type": "number",
      "description": "Final value"
    }
  },
  "required": [
    "initial",
    "final"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the compound annual growth rate that takes an initial value to a final value over a given number of years — the standard way to annualize returns. Use this when an agent needs to compound annual growth rate, time-normalized. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "initial": {
      "type": "number",
      "description": "Initial value"
    },
    "final": {
      "type": "number",
      "description": "Final value"
    },
    "years": {
      "type": "number",
      "description": "Years"
    }
  },
  "required": [
    "initial",
    "final",
    "years"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate gross profit, profit margin (profit as % of price) and markup (profit as % of cost) from a unit cost and selling price — the two numbers people constantly mix up. Use this when an agent needs to profit margin vs markup, both computed. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "cost": {
      "type": "number",
      "description": "Cost"
    },
    "price": {
      "type": "number",
      "description": "Selling price"
    }
  },
  "required": [
    "cost",
    "price"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Validate an International Bank Account Number: country code, country-specific length and the ISO 7064 MOD 97-10 check digits — with the pretty-printed grouping returned when valid. Use this when an agent needs to structure, length and mod-97 checksum validation. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "iban": {
      "type": "string",
      "description": "Spaces are ignored"
    }
  },
  "required": [
    "iban"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Returns the current date and time in any IANA time zone, plus Unix seconds/milliseconds, ISO 8601, weekday and day-of-year. Use it whenever an agent needs to know 'now'. Use this when an agent needs to the current date/time in any time zone — agents have no clock. x402 price $0.0005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "tz": {
      "type": "string",
      "description": "e.g. America/New_York, Europe/Berlin, Asia/Tokyo"
    }
  },
  "required": [
    "tz"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Count business days (Mon–Fri) between two dates, with weekend and holiday breakdown. Provide a country code and real public holidays (via Nager.Date) are excluded too. Use this when an agent needs to working days between dates, optionally minus public holidays. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "start": {
      "type": "string",
      "description": "Start date"
    },
    "end": {
      "type": "string",
      "description": "End date"
    },
    "country": {
      "type": "string",
      "description": "Excludes that country's public holidays"
    }
  },
  "required": [
    "start",
    "end",
    "country"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Live foreign-exchange reference rates from the European Central Bank (via frankfurter.dev): a full rate table against any base currency, or cross-rate conversion of any amount. Refreshed every business day by the ECB, cached one hour. Use this when an agent needs to live ECB reference rates for 30 currencies. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "op": {
      "type": "string",
      "enum": [
        "rates",
        "convert"
      ],
      "description": "Operation"
    },
    "base": {
      "type": "string",
      "enum": [
        "AUD",
        "BRL",
        "CAD",
        "CHF",
        "CNY",
        "CZK",
        "DKK",
        "EUR",
        "GBP",
        "HKD",
        "HUF",
        "IDR",
        "ILS",
        "INR",
        "ISK",
        "JPY",
        "KRW",
        "MXN",
        "MYR",
        "NOK",
        "NZD",
        "PHP",
        "PLN",
        "RON",
        "SEK",
        "SGD",
        "THB",
        "TRY",
        "USD",
        "ZAR"
      ],
      "description": "Base currency"
    },
    "from": {
      "type": "string",
      "enum": [
        "",
        "AUD",
        "BRL",
        "CAD",
        "CHF",
        "CNY",
        "CZK",
        "DKK",
        "EUR",
        "GBP",
        "HKD",
        "HUF",
        "IDR",
        "ILS",
        "INR",
        "ISK",
        "JPY",
        "KRW",
        "MXN",
        "MYR",
        "NOK",
        "NZD",
        "PHP",
        "PLN",
        "RON",
        "SEK",
        "SGD",
        "THB",
        "TRY",
        "USD",
        "ZAR"
      ],
      "description": "Convert from"
    },
    "to": {
      "type": "string",
      "enum": [
        "",
        "AUD",
        "BRL",
        "CAD",
        "CHF",
        "CNY",
        "CZK",
        "DKK",
        "EUR",
        "GBP",
        "HKD",
        "HUF",
        "IDR",
        "ILS",
        "INR",
        "ISK",
        "JPY",
        "KRW",
        "MXN",
        "MYR",
        "NOK",
        "NZD",
        "PHP",
        "PLN",
        "RON",
        "SEK",
        "SGD",
        "THB",
        "TRY",
        "USD",
        "ZAR"
      ],
      "description": "Convert to"
    },
    "amount": {
      "type": "number",
      "description": "Amount"
    },
    "date": {
      "type": "string",
      "description": "YYYY-MM-DD — ECB business days"
    }
  },
  "required": [
    "op",
    "base",
    "from",
    "to",
    "amount",
    "date"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Live weather from Open-Meteo: current temperature, humidity, wind and conditions plus a 3-day forecast, by city name or coordinates. No API key, cached 30 minutes. Use this when an agent needs to current conditions + 3-day forecast for any city. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "city": {
      "type": "string",
      "description": "Or provide lat/lon instead"
    },
    "lat": {
      "type": "number",
      "description": "Latitude"
    },
    "lon": {
      "type": "number",
      "description": "Longitude"
    }
  },
  "required": [
    "city",
    "lat",
    "lon"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

List upcoming or full-year public holidays for any covered country via Nager.Date — names, dates and whether they're nationwide. Essential for scheduling agents. Use this when an agent needs to upcoming public holidays for ~110 countries. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "country": {
      "type": "string",
      "description": "Country (ISO-2)"
    },
    "op": {
      "type": "string",
      "enum": [
        "next",
        "year"
      ],
      "description": "Query"
    },
    "year": {
      "type": "number",
      "description": "Year (for full-year list)"
    },
    "count": {
      "type": "number",
      "description": "Max results"
    }
  },
  "required": [
    "country",
    "op",
    "year",
    "count"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Live cryptocurrency prices from CoinGecko's public API: current price in USD/EUR/GBP/JPY plus 24-hour change for any coin by id or common ticker (btc, eth, sol…). Cached 60 seconds. Use this when an agent needs to live token prices and 24h change via CoinGecko. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "ids": {
      "type": "string",
      "description": "Coin ids or tickers"
    },
    "vs": {
      "type": "string",
      "enum": [
        "usd",
        "eur",
        "gbp",
        "jpy"
      ],
      "description": "Quote currency"
    }
  },
  "required": [
    "ids",
    "vs"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Geolocate any IPv4/IPv6 address (or the caller's own IP when omitted) via ipwho.is: country, region, city, coordinates, timezone, ASN/network owner and currency. Cached 24 hours per IP. Use this when an agent needs to where is an IP address? Country, city, ASN, timezone. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "ip": {
      "type": "string",
      "description": "Leave empty to look up the caller's IP"
    }
  },
  "required": [
    "ip"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Query live DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) through Cloudflare's DNS-over-HTTPS resolver. Domain validation, email deliverability pre-checks and infrastructure discovery. Use this when an agent needs to real DNS records via Cloudflare DNS-over-HTTPS. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string",
      "description": "Domain"
    },
    "type": {
      "type": "string",
      "enum": [
        "A",
        "AAAA",
        "MX",
        "TXT",
        "NS",
        "CNAME",
        "SOA"
      ],
      "description": "Record type"
    }
  },
  "required": [
    "domain",
    "type"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Fetch a URL server-side and extract its title, meta description, Open Graph and Twitter card tags, canonical URL and favicon — the data agents need to preview or classify a link. SSRF-guarded: private networks are blocked, 10s timeout, 1MB cap. Use this when an agent needs to title, description, OG image and favicon of any page. x402 price $0.003/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "URL"
    }
  },
  "required": [
    "url"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Generate a QR code for any text, URL or crypto address: returns ready-to-embed SVG markup and a data URI, with configurable size and error-correction level. Use this when an agent needs to any text or URL as a QR code (SVG + PNG data URI). x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Content"
    },
    "size": {
      "type": "number",
      "description": "Size (px)"
    },
    "ec": {
      "type": "string",
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ],
      "description": "Error correction"
    }
  },
  "required": [
    "text",
    "size",
    "ec"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Estimate how many tokens a text consumes for each major model family (GPT, Claude, Gemini, Llama, DeepSeek) using a character/word heuristic that is within ~10% of real BPE tokenizers — enough for context budgeting and cost math, with zero dependencies. Use this when an agent needs to approximate token counts per LLM family, ±10%. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    }
  },
  "required": [
    "text"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Calculate the API cost of an LLM call: input and output tokens × published per-million prices for 15 current models (OpenAI, Anthropic, Google, DeepSeek, xAI, Meta). Batch multiplier included for monthly estimates. Use this when an agent needs to tokens × current per-model prices = USD. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "inputTokens": {
      "type": "number",
      "description": "Input tokens"
    },
    "outputTokens": {
      "type": "number",
      "description": "Output tokens"
    },
    "model": {
      "type": "string",
      "enum": [
        "gpt-5",
        "gpt-5-mini",
        "gpt-4.1",
        "gpt-4.1-mini",
        "gpt-4o",
        "o4-mini",
        "claude-opus-4",
        "claude-sonnet-4",
        "claude-haiku-4",
        "gemini-2.5-pro",
        "gemini-2.5-flash",
        "gemini-2.0-flash",
        "deepseek-v3",
        "grok-3",
        "llama-4-maverick"
      ],
      "description": "Model"
    },
    "calls": {
      "type": "number",
      "description": "Number of calls"
    }
  },
  "required": [
    "inputTokens",
    "outputTokens",
    "model",
    "calls"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Split text into retrieval-friendly chunks with a token budget and sentence-aware boundaries. Overlap between consecutive chunks preserves context across splits — the standard preparation step before embedding. Use this when an agent needs to rAG-ready chunks with token budgets and overlap. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "targetTokens": {
      "type": "number",
      "description": "Target tokens per chunk"
    },
    "overlapTokens": {
      "type": "number",
      "description": "Overlap tokens"
    }
  },
  "required": [
    "text",
    "targetTokens",
    "overlapTokens"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Compute exact hash digests of UTF-8 text using Web Crypto (SHA family) and a verified pure-JS MD5 for legacy checksums. Deterministic — identical input always yields the identical digest. Use this when an agent needs to sHA-256 / SHA-512 / SHA-1 / MD5, exact digests. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "algo": {
      "type": "string",
      "enum": [
        "sha256",
        "sha512",
        "sha1",
        "md5"
      ],
      "description": "Algorithm"
    }
  },
  "required": [
    "text",
    "algo"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Generate cryptographically random UUIDv4s or time-sortable UUIDv7s from a real CSPRNG, and validate any UUID's format, version and variant bits. Use this when an agent needs to random v4, sortable v7, plus strict validation. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "op": {
      "type": "string",
      "enum": [
        "generate",
        "validate"
      ],
      "description": "Operation"
    },
    "version": {
      "type": "string",
      "enum": [
        "v4",
        "v7"
      ],
      "description": "Version (generate)"
    },
    "value": {
      "type": "string",
      "description": "UUID (validate)"
    }
  },
  "required": [
    "op",
    "version",
    "value"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Scan unstructured text and extract structured entities: email addresses, URLs, IPv4 addresses, phone numbers and domains. Deduplicated, categorized, machine-ready. Use this when an agent needs to pull emails, URLs, IPs, phones and domains from raw text. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text"
    },
    "what": {
      "type": "string",
      "enum": [
        "all",
        "emails",
        "urls",
        "ips",
        "phones",
        "domains"
      ],
      "description": "Extract"
    }
  },
  "required": [
    "text",
    "what"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Compare two texts line by line using an LCS diff: exact additions, removals and context — in unified-diff style. Deterministic, unlike asking a model to 'find the differences'. Use this when an agent needs to exact line-level diff with unified-style output. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "a": {
      "type": "string",
      "description": "Use \n for line breaks"
    },
    "b": {
      "type": "string",
      "description": "Changed text"
    },
    "context": {
      "type": "number",
      "description": "Context lines"
    }
  },
  "required": [
    "a",
    "b",
    "context"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Parse a URL into all its components: protocol, hostname, port, path segments, query parameters (as a clean object), hash and credentials. Exact — no guessing by eye. Use this when an agent needs to break any URL into protocol, host, path and params. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "URL"
    }
  },
  "required": [
    "url"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Generate cryptographically secure randomness: passwords with charset rules, hex keys of any byte length, and uniform random integers (rejection sampling, no modulo bias). Never use Math.random for secrets. Use this when an agent needs to cSPRNG passwords, hex keys and uniform integers. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "mode": {
      "type": "string",
      "enum": [
        "password",
        "hex",
        "int"
      ],
      "description": "Mode"
    },
    "length": {
      "type": "number",
      "description": "Length (password/hex)"
    },
    "min": {
      "type": "number",
      "description": "Int minimum"
    },
    "max": {
      "type": "number",
      "description": "Int maximum"
    },
    "upper": {
      "type": "string",
      "enum": [
        "true",
        "false"
      ],
      "description": "Include A–Z"
    },
    "digits": {
      "type": "string",
      "enum": [
        "true",
        "false"
      ],
      "description": "Include 0–9"
    },
    "symbols": {
      "type": "string",
      "enum": [
        "true",
        "false"
      ],
      "description": "Include symbols"
    }
  },
  "required": [
    "mode",
    "length",
    "min",
    "max",
    "upper",
    "digits",
    "symbols"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

One-call on-chain profile of any Ethereum or Base wallet via Blockscout: native balance, transaction and transfer counts, activity recency, top token holdings, and most frequent recent counterparties — with fresh-wallet and high-volume flags. The 'who is this address?' conclusion, not raw RPC data. Use this when an agent needs to on-chain wallet profile: balance, activity, tokens, counterparties. x402 price $0.005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "Wallet address"
    },
    "chain": {
      "type": "string",
      "enum": [
        "base",
        "ethereum"
      ],
      "description": "Chain"
    }
  },
  "required": [
    "address",
    "chain"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Fetch a PDF (by URL, SSRF-guarded) or accept it as base64 and extract all readable text with page count. Deterministic parsing — no language model, so nothing is invented. Text-based PDFs only; scanned images need OCR (not included). Use this when an agent needs to extract readable text from any PDF — agents can't read PDFs. x402 price $0.003/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Or provide base64 instead"
    },
    "base64": {
      "type": "string",
      "description": "Base64 content"
    },
    "maxChars": {
      "type": "number",
      "description": "Max text length"
    }
  },
  "required": [
    "url",
    "base64",
    "maxChars"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Fetch a web page server-side and convert it to clean markdown — headings, links, lists, tables and text, with scripts, styles and boilerplate stripped. The 'reader' pattern agents use to actually understand web pages. SSRF-guarded with redirects re-validated, 10s timeout, 1MB cap. Use this when an agent needs to fetch any page and get clean markdown an LLM can read. x402 price $0.005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "URL"
    },
    "maxChars": {
      "type": "number",
      "description": "Max markdown length"
    }
  },
  "required": [
    "url",
    "maxChars"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Describe what you need and get back matching x402-paid APIs: our own catalog (54 tools) plus, optionally, the live x402 Bazaar of third-party sellers. The agent's meta-tool — instead of knowing an API exists, ask for the capability. Use this when an agent needs to "I need a tool that does X" → matched paid APIs. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "query": {
      "type": "string",
      "description": "What do you need?"
    },
    "includeBazaar": {
      "type": "string",
      "enum": [
        "true",
        "false"
      ],
      "description": "Include third-party Bazaar results"
    },
    "limit": {
      "type": "number",
      "description": "Max results per source"
    }
  },
  "required": [
    "query",
    "includeBazaar",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Parse natural-language date and time expressions — "in two weeks", "next friday at 3pm", "dec 25th" — into exact ISO 8601 dates. Deterministic parsing (no LLM guessing); relative expressions resolve against a reference moment you control. Use this when an agent needs to "next friday 3pm" → exact ISO dates. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Expression"
    },
    "ref": {
      "type": "string",
      "description": "Defaults to now"
    }
  },
  "required": [
    "text",
    "ref"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Turn a cron expression into plain English, validate it, and compute the exact next execution times. Deterministic — the answer to 'when does this cron actually fire?' without guessing. Use this when an agent needs to explain a cron expression and compute the next runs. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "expr": {
      "type": "string",
      "description": "5 fields: minute hour day month weekday"
    },
    "ref": {
      "type": "string",
      "description": "Reference date (optional)"
    }
  },
  "required": [
    "expr",
    "ref"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Fetch an RSS or Atom feed and return normalized JSON items: title, link, publication date (ISO) and summary. Server-side fetching with SSRF guard; handles both RSS 2.0 and Atom dialects. Use this when an agent needs to any feed → clean JSON items, no XML parsing on your side. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Feed URL"
    },
    "limit": {
      "type": "number",
      "description": "Max items"
    }
  },
  "required": [
    "url",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Query the Internet Archive's Wayback index for any URL: when it was first archived, the most recent snapshot, how many years it spans, and recent capture dates. Useful for fact-checking page history, finding deleted content and due-diligence. Use this when an agent needs to how the Internet Archive remembers a URL. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "URL or domain"
    }
  },
  "required": [
    "url"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Parse iCalendar (.ics) content — meeting invites, conference calendars, exports from Google/Outlook — into structured event JSON: title, start/end, location, organizer and description. Use this when an agent needs to turn .ics calendar files into clean event JSON. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "ics": {
      "type": "string",
      "description": ".ics content"
    },
    "limit": {
      "type": "number",
      "description": "Max events"
    }
  },
  "required": [
    "ics",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Validate an email address in two layers: strict RFC-style syntax, then a live DNS MX lookup on the domain to confirm the recipient actually runs mail servers. Catches the typos and fake domains that pure regex misses. Use this when an agent needs to syntax + live MX check — can this address receive mail?. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "email": {
      "type": "string",
      "description": "Email address"
    }
  },
  "required": [
    "email"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Look up any US telephone area code to find the state or territory it serves, or list every area code in a given state. Covers all 404 NANP codes in use, including overlays. Use this when an agent needs to all 404 NANP area codes → state lookup. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "code": {
      "type": "string",
      "description": "Leave empty to list by state instead"
    },
    "state": {
      "type": "string",
      "description": "State filter"
    },
    "limit": {
      "type": "number",
      "description": "Max rows"
    }
  },
  "required": [
    "code",
    "state",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Scan newly created DEX pools on Solana, Base, Ethereum, BSC, Arbitrum or Polygon, filtered by minimum liquidity and maximum age. Each pool comes with liquidity (USD), 24h volume, FDV, buy/sell counts and automatic risk flags (too fresh, thin liquidity, sell pressure). Powered by GeckoTerminal's public API. Use this when an agent needs to fresh DEX launches with liquidity, volume and risk flags. x402 price $0.003/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "network": {
      "type": "string",
      "enum": [
        "solana",
        "base",
        "eth",
        "bsc",
        "arbitrum",
        "polygon"
      ],
      "description": "Network"
    },
    "minLiquidityUsd": {
      "type": "number",
      "description": "Min liquidity (USD)"
    },
    "maxAgeHours": {
      "type": "number",
      "description": "Max age (hours)"
    },
    "limit": {
      "type": "number",
      "description": "Max pools"
    }
  },
  "required": [
    "network",
    "minLiquidityUsd",
    "maxAgeHours",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Explain what an EVM transaction would actually do: decodes the calldata (ERC-20 transfers/approvals via known ABIs, unknown selectors via the 4byte directory) and simulates the call against live chain state to report the outcome — including unlimited-approval warnings — without sending anything. Use this when an agent needs to decode and simulate a transaction — before signing it. x402 price $0.005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "chain": {
      "type": "string",
      "enum": [
        "base",
        "ethereum"
      ],
      "description": "Chain"
    },
    "to": {
      "type": "string",
      "description": "To address"
    },
    "data": {
      "type": "string",
      "description": "Calldata (0x hex)"
    },
    "value": {
      "type": "string",
      "description": "Value (wei, optional)"
    }
  },
  "required": [
    "chain",
    "to",
    "data",
    "value"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Check whether a domain name is registered or available, via the official RDAP registry protocol (404 = available). For registered domains it also returns the registrar and creation/expiration dates — useful when an agent needs to name a product or verify how long a business has existed. Use this when an agent needs to is this domain taken? Registry answer, not a landing page. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "domain": {
      "type": "string",
      "description": "Domain"
    }
  },
  "required": [
    "domain"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Verify a claim about a web page's content: fetches the page (SSRF-guarded) and reports whether the expected text appears, with the surrounding excerpt as evidence. The deterministic way for an agent to confirm 'the site says X' before acting on it. Use this when an agent needs to does this page actually say that? Checked, not guessed. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Or provide raw HTML instead"
    },
    "html": {
      "type": "string",
      "description": "Raw HTML"
    },
    "expect": {
      "type": "string",
      "description": "Expected text"
    },
    "caseSensitive": {
      "type": "string",
      "enum": [
        "false",
        "true"
      ],
      "description": "Case sensitive"
    }
  },
  "required": [
    "url",
    "html",
    "expect",
    "caseSensitive"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Probe a GET endpoint several times and report status codes and latency statistics (min/avg/max). The cheap way for an agent to verify an API — for example one found on the x402 Bazaar — responds before spending real money calling it. Use this when an agent needs to status and latency stats — test an API before relying on it. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "GET endpoint"
    },
    "runs": {
      "type": "number",
      "description": "Test requests"
    },
    "timeoutMs": {
      "type": "number",
      "description": "Timeout per request (ms)"
    }
  },
  "required": [
    "url",
    "runs",
    "timeoutMs"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Parse a User-Agent header into structured data: browser (name/version), rendering engine, operating system, and device type/vendor/model. Deterministic — the same string always parses identically. Use this when an agent needs to uA string → browser, engine, OS and device. x402 price $0.001/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "userAgent": {
      "type": "string",
      "description": "User-Agent string"
    }
  },
  "required": [
    "userAgent"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Extract every HTML table from a page (or raw HTML) as structured JSON: headers and rows kept intact. The deterministic answer to 'get the pricing table / comparison table / stats table from this page' — no vision model needed. Use this when an agent needs to hTML tables → structured JSON rows and columns. x402 price $0.003/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Or provide raw HTML instead"
    },
    "html": {
      "type": "string",
      "description": "Raw HTML"
    },
    "limit": {
      "type": "number",
      "description": "Max tables"
    }
  },
  "required": [
    "url",
    "html",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Full on-chain due-diligence report for any NFT collection: mint supply, unique holders, top-10 ownership concentration with a verdict, wash-trading indicators from transfer patterns, and recent activity trend. Read straight from the chain — the check an agent runs before its human buys. Use this when an agent needs to the Carfax for NFT collections — holders, concentration, wash signals. x402 price $0.02/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "contract": {
      "type": "string",
      "description": "Collection contract"
    },
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base"
      ],
      "description": "Chain"
    }
  },
  "required": [
    "contract",
    "chain"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Top holders of any NFT collection with exact quantities, individual and cumulative ownership percentages, and concentration statistics — the distribution picture agents need before valuing or recommending a collection. Use this when an agent needs to who owns the collection, and how concentrated is it. x402 price $0.005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "contract": {
      "type": "string",
      "description": "Collection contract"
    },
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base"
      ],
      "description": "Chain"
    },
    "limit": {
      "type": "number",
      "description": "Holders to show"
    }
  },
  "required": [
    "contract",
    "chain",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Live transfer feed of an NFT collection with per-address accumulation analysis: net quantities received vs sent over recent activity, ranking the buyers adding to positions and the wallets exiting. The actionable view behind the raw transfer list. Use this when an agent needs to who is accumulating and who is exiting — right now. x402 price $0.003/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "contract": {
      "type": "string",
      "description": "Collection contract"
    },
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base"
      ],
      "description": "Chain"
    },
    "limit": {
      "type": "number",
      "description": "Transfers to analyze"
    }
  },
  "required": [
    "contract",
    "chain",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Look up an address's NFT portfolio across collections: each collection held, quantity owned, sorted by size. The enrichment endpoint for agents profiling wallets — pairs with wallet-snapshot for the full picture. Use this when an agent needs to every NFT collection a wallet holds, in one call. x402 price $0.002/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "address": {
      "type": "string",
      "description": "Wallet address"
    },
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base"
      ],
      "description": "Chain"
    },
    "limit": {
      "type": "number",
      "description": "Max collections"
    }
  },
  "required": [
    "address",
    "chain",
    "limit"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Compare any two NFT collections on the full due-diligence metric set: supply, holders, holder ratio, top-10 concentration, wash-trading score and activity trend — with a winner per metric. The head-to-head an agent runs before recommending one collection over another. Use this when an agent needs to two collections side-by-side, metric by metric verdicts. x402 price $0.005/call (USDC, eip155:8453).

{
  "type": "object",
  "properties": {
    "contractA": {
      "type": "string",
      "description": "Collection A"
    },
    "contractB": {
      "type": "string",
      "description": "Collection B"
    },
    "chain": {
      "type": "string",
      "enum": [
        "ethereum",
        "base"
      ],
      "description": "Chain"
    }
  },
  "required": [
    "contractA",
    "contractB",
    "chain"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}