Coinslot — the vending machine for machines

Convert an array of JSON objects to CSV (nested keys become dot-path columns) or CSV back to JSON. POST { direction: 'json-to-csv'|'csv-to-json', data }. Price: $0.002/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "direction": {
      "type": "string",
      "enum": [
        "json-to-csv",
        "csv-to-json"
      ]
    },
    "data": {
      "description": "Array of objects (json-to-csv) or CSV string (csv-to-json)"
    }
  },
  "required": [
    "direction",
    "data"
  ]
}

Check an email address: RFC syntax, live MX records via DNS-over-HTTPS, and disposable-domain screening. POST { email } or { emails: [...] } (max 20). Price: $0.003/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "email": {
      "type": "string",
      "description": "Single address"
    },
    "emails": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "maxItems": 20
    }
  }
}

Convert HTML to clean Markdown: headings, links, images, lists, tables, code blocks, emphasis. Strips scripts, styles, and comments. POST { html } (max 500KB). Price: $0.005/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "html": {
      "type": "string",
      "description": "HTML document or fragment, max 500KB"
    }
  },
  "required": [
    "html"
  ]
}

Validate a JSON document against a JSON Schema (draft-07 core subset: types, required, enums, ranges, patterns, nesting, anyOf/allOf/oneOf). Returns all violations with paths. POST { schema, data }. Price: $0.003/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "schema": {
      "type": "object",
      "description": "JSON Schema (draft-07 core subset)"
    },
    "data": {
      "description": "Document to validate"
    }
  },
  "required": [
    "schema",
    "data"
  ]
}

Line-based diff of two texts. Returns unified diff plus structured changes (added/removed/unchanged counts and hunks). POST { a, b, context? } (max 200KB each). Price: $0.002/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "a": {
      "type": "string"
    },
    "b": {
      "type": "string"
    },
    "context": {
      "type": "integer",
      "minimum": 0,
      "maximum": 10,
      "default": 3
    }
  },
  "required": [
    "a",
    "b"
  ]
}

Parse a 5-field cron expression: get a plain-English explanation and the next N run times (UTC). POST { expression, count?, from? }. Price: $0.002/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "expression": {
      "type": "string",
      "description": "5-field cron or @alias"
    },
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 20,
      "default": 5
    },
    "from": {
      "type": "string",
      "description": "ISO date to project from"
    }
  },
  "required": [
    "expression"
  ]
}

Generate a QR code as standalone SVG. POST { text, ecLevel?: 'L'|'M'|'Q'|'H', margin?: 0-8, dark?, light? } (text max 2KB). Price: $0.005/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "maxLength": 2048
    },
    "ecLevel": {
      "type": "string",
      "enum": [
        "L",
        "M",
        "Q",
        "H"
      ],
      "default": "M"
    },
    "margin": {
      "type": "integer",
      "minimum": 0,
      "maximum": 8,
      "default": 4
    },
    "dark": {
      "type": "string",
      "description": "hex color"
    },
    "light": {
      "type": "string",
      "description": "hex color"
    }
  },
  "required": [
    "text"
  ]
}

Parse an RSS 2.0 or Atom feed into clean JSON: title, items with link/date/summary, HTML stripped. POST { xml } (max 1MB) or { url } to fetch. Price: $0.004/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "xml": {
      "type": "string",
      "description": "Feed XML, max 1MB"
    },
    "url": {
      "type": "string",
      "description": "Feed URL to fetch instead"
    }
  }
}

Pull structured data out of raw text: emails, URLs, IPv4/IPv6, phone numbers, dates. Deduplicated with counts. POST { text } (max 500KB). Price: $0.003/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Raw text, max 500KB"
    }
  },
  "required": [
    "text"
  ]
}

Render Markdown (GitHub-flavored: tables, fenced code, task lists) to clean HTML with raw inline HTML stripped. POST { markdown } (max 500KB). Price: $0.003/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "markdown": {
      "type": "string",
      "description": "GitHub-flavored Markdown, max 500KB"
    }
  },
  "required": [
    "markdown"
  ]
}

Validate identifiers with real checksum math: credit card (Luhn + brand), IBAN (mod-97), EAN-13/UPC-A, ISBN-10/13, UUID (with version). POST { type, value } or { items: [{type, value}] } (max 50). Price: $0.003/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "card",
        "iban",
        "ean",
        "isbn",
        "uuid"
      ]
    },
    "value": {
      "type": "string"
    },
    "items": {
      "type": "array",
      "maxItems": 50,
      "items": {
        "type": "object",
        "required": [
          "type",
          "value"
        ],
        "properties": {
          "type": {
            "type": "string"
          },
          "value": {
            "type": "string"
          }
        }
      }
    }
  }
}

Convert a timestamp between IANA timezones with DST handled correctly. Returns local times, UTC offsets, weekday, and hour-of-day per zone. POST { time?, from?, to } — to is a zone or array (max 20). Price: $0.002/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "time": {
      "description": "ISO string, epoch, or 'now'"
    },
    "from": {
      "type": "string",
      "description": "IANA zone the input wall-clock is in"
    },
    "to": {
      "description": "IANA zone or array of zones (max 20)"
    }
  },
  "required": [
    "to"
  ]
}

Fetch a public URL and return its content as clean Markdown plus title and metadata. One call instead of fetch + parse + convert. POST { url, maxBytes? } (default 1MB cap). Price: $0.005/call with credits key; free demo without (2KB input cap).

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "Public http(s) URL"
    },
    "maxBytes": {
      "type": "integer",
      "minimum": 1024,
      "maximum": 3000000,
      "default": 1000000
    }
  },
  "required": [
    "url"
  ]
}