MCP MeasureMCP Measure

index observed

Tool-Call Origin Attestation

Dispatch-boundary attestation: prove a tool call was issued for its exact arguments.

Should I use this

Quality & Safety

B
Description quality
82%
Schema completeness
72%
Naming quality
80%
Poisoning risk
100%
Permission match
100%
Protocol compliance
100%

Findings (3)

  • LOWTool 'register_issuer' description lacks action verbin register_issuer
  • LOWTool 'verdict_lookup' description lacks action verbin verdict_lookup
  • LOWTool 'receipts' description lacks action verbin receipts

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~398Tokens (tool definitions)
~434 BTypical response size
Minimal attention impact (0.31% 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": {
    "tool-call-origin-attestation": {
      "url": "https://textforagents.com/products/tool-call-origin-attestation/mcp"
    }
  }
}

Remote endpoints

https://textforagents.com/products/tool-call-origin-attestation/mcpstreamable-http

What it can do

Tool inventory

Tools (6)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
⚪register_issuer(issuer_id, issuer_class, public_key)

Register an issuer {issuer_id, issuer_class, public_key} — 409 on re-register

Input Schema

{
  "type": "object",
  "properties": {
    "issuer_id": {
      "type": "string"
    },
    "issuer_class": {
      "type": "string"
    },
    "public_key": {
      "type": "string"
    }
  },
  "required": [
    "issuer_id",
    "issuer_class",
    "public_key"
  ]
}
🟢attestation_check(execution, attestation)

Attestation check {execution, attestation} — $0.01 x402 / bundle / fleet included (same billing as HTTP)

Input Schema

{
  "type": "object",
  "properties": {
    "execution": {
      "type": "object"
    },
    "attestation": {
      "type": "object"
    }
  },
  "required": [
    "execution"
  ]
}
⚪dispatch(execution, attestation)

PEP dispatch {execution, attestation} — executes ONLY on ATTESTED

Input Schema

{
  "type": "object",
  "properties": {
    "execution": {
      "type": "object"
    },
    "attestation": {
      "type": "object"
    }
  },
  "required": [
    "execution"
  ]
}
🟡probe(framework, version, patch_state, surface)

Forged-shape probe suite {framework, version, patch_state, surface, target_mode} — $4.99 / first free per operator ever

Input Schema

{
  "type": "object",
  "properties": {
    "framework": {
      "type": "string"
    },
    "version": {
      "type": "string"
    },
    "patch_state": {
      "type": "string"
    },
    "surface": {
      "type": "string"
    }
  },
  "required": [
    "framework",
    "version",
    "patch_state",
    "surface"
  ]
}
🟡verdict_lookup(framework, version, patch_state, surface)

Verdict by {framework, version, patch_state, surface}

Input Schema

{
  "type": "object",
  "properties": {
    "framework": {
      "type": "string"
    },
    "version": {
      "type": "string"
    },
    "patch_state": {
      "type": "string"
    },
    "surface": {
      "type": "string"
    }
  },
  "required": [
    "framework",
    "version",
    "patch_state",
    "surface"
  ]
}
⚪receipts

Own receipt chain + validity

Input Schema

{
  "type": "object",
  "properties": {}
}

Community

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Evidence

Recent observations

verifiedversion not recorded6 tools