MCP MeasureMCP Measure

index observed

QRtracer

Create and manage dynamic QR codes, export QR images, compare scan analytics and check QR links.

Should I use this

Quality & Safety

A
Description quality
95%
Schema completeness
75%
Naming quality
96%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~2,929Tokens (tool definitions)
~1.4 KBTypical response size
Significant attention impact (2.29% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "qrtracer": {
      "url": "https://qrtracer.io/mcp"
    }
  }
}

Remote endpoints

https://qrtracer.io/mcpstreamable-http

What it can do

Tool inventory

Tools (11)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🔴create_qr(destination, label, design, request_key)

Create a dynamic QR code for a public HTTP(S) destination. Supply a UUID request_key to safely retry authenticated creation. Anonymous creation is limited; ALWAYS show its returned claim_url to the user. Account creation uses existing plan limits.

Input Schema

{
  "type": "object",
  "properties": {
    "destination": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4096
    },
    "label": {
      "type": "string",
      "maxLength": 200
    },
    "design": {
      "type": "object",
      "properties": {
        "fg": {
          "type": "string",
          "pattern": "^#[a-f0-9]{6}$"
        },
        "bg": {
          "type": "string",
          "pattern": "^#[a-f0-9]{6}$"
        }
      }
    },
    "request_key": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    }
  },
  "required": [
    "destination"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_account

Read the connected account's plan and available capabilities. Does not include email or billing details.

Input Schema

{
  "type": "object",
  "properties": {},
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢list_qr_codes(limit, cursor, search)

Find only your owned QR codes, with label search and stable cursor pagination.

Input Schema

{
  "type": "object",
  "properties": {
    "limit": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100
    },
    "cursor": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "search": {
      "type": "string",
      "maxLength": 100
    }
  },
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_qr_code(id)

Inspect an owned QR code, destination, design, latest stored link health and revision. Read before updating.

Input Schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🔴update_destination(id, destination, expected_revision)

Change an owned QR destination without changing its printed redirect URL. Confirm the intended destination with the user. Supply expected_revision from get_qr_code; conflict means read again before retrying.

Input Schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "destination": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4096
    },
    "expected_revision": {
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    }
  },
  "required": [
    "id",
    "destination"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢get_analytics(id, days, from, to)

Read aggregate recorded human scans for one owned code. Default period is 28 days; history follows the current plan. Scans are not conversions or unique people.

Input Schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "days": {
      "type": "integer",
      "minimum": 1,
      "maximum": 9007199254740991
    },
    "from": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
    },
    "to": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢compare_qr_codes(ids, days, from, to)

Compare aggregate human scan counts for 2 to 10 owned QR codes over the same period. Do not infer conversion rates without separate conversion data.

Input Schema

{
  "type": "object",
  "properties": {
    "ids": {
      "minItems": 2,
      "maxItems": 10,
      "type": "array",
      "items": {
        "type": "string",
        "format": "uuid",
        "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
      }
    },
    "days": {
      "type": "integer",
      "minimum": 1,
      "maximum": 9007199254740991
    },
    "from": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
    },
    "to": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z))$"
    }
  },
  "required": [
    "ids"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢render_qr(id, format)

Preview and download an owned QR as PNG, or eligible SVG. Returns a short-lived download URL; do not expose private connection tokens. Existing anonymous PNG URLs remain supported.

Input Schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "format": {
      "type": "string",
      "enum": [
        "png",
        "svg"
      ]
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢check_qr_link(url)

Check a public QR destination's current HTTP reachability, redirect chain and known general provider policies. Cannot determine exact expiry, account state or destination safety.

Input Schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4096
    }
  },
  "required": [
    "url"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🔴set_routing(id, prompt, program, expected_program_version)

Legacy Programmable tool: compile a plain-language routing prompt or save a valid supplied routing program on an owned code. Version conflicts require reading again.

Input Schema

{
  "type": "object",
  "properties": {
    "id": {
      "type": "string",
      "format": "uuid",
      "pattern": "^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$"
    },
    "prompt": {
      "type": "string",
      "minLength": 1,
      "maxLength": 4000
    },
    "program": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "expected_program_version": {
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    }
  },
  "required": [
    "id"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟢simulate_scan(program, context)

Dry-run a routing program against a sample scan context. Does not create a scan or change a code.

Input Schema

{
  "type": "object",
  "properties": {
    "program": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "context": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    }
  },
  "required": [
    "program"
  ],
  "$schema": "http://json-schema.org/draft-07/schema#"
}

Community

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Evidence

Recent observations

verifiedversion not recorded11 tools