ProofFetch — Cited Web Evidence

Free URL preflight. Cited text via separate paid Stripe MPP API.

Should I use this

Quality & Safety

B
Description quality
100%
Schema completeness
65%
Naming quality
80%
Poisoning risk
80%
Permission match
90%
Protocol compliance
100%

Findings (3)

  • HIGHTool poisoning patterns detected
  • MEDIUMTool description contains URL to non-standard domainin proof_fetch_preflight
  • LOWTool 'proof_fetch_offer' suggests web access but openWorldHint=falsein proof_fetch_offer

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~322Tokens (tool definitions)
~860 BTypical response size
Minimal attention impact (0.25% 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": {
    "proof-fetch": {
      "url": "https://proof-fetch-agent-api.neoaethel.workers.dev/mcp"
    }
  }
}

Remote endpoints

https://proof-fetch-agent-api.neoaethel.workers.dev/mcpstreamable-http

What it can do

Tool inventory

Tools (2)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢proof_fetch_preflight(url, maxChars)

Start here: check a public URL before buying cited extraction. Returns fetchability, provenance, hashes and deterministic injection indicators, not page text or a safety guarantee. No payment or purchase. Example: {"url":"https://example.com/","maxChars":30000}.

Input Schema

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "format": "uri",
      "maxLength": 2048,
      "description": "Public HTTP(S) document URL. No credentials, private networks, authenticated pages or browser rendering.",
      "examples": [
        "https://example.com/"
      ]
    },
    "maxChars": {
      "type": "integer",
      "minimum": 1000,
      "maximum": 50000,
      "default": 30000,
      "description": "Maximum normalized characters to extract. Free preflight returns metadata only, never the extracted text.",
      "examples": [
        30000
      ]
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false
}
🟢proof_fetch_offer

Read the $0.50-per-successful-extraction offer and request schema without buying. Paid cited text uses POST /v1/evidence with Stripe MPP and a caller-generated idempotency key, only with buyer payment authority. Example arguments: {}.

Input Schema

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

Community

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Evidence

Recent observations

verifiedversion not recorded2 tools
verifiedversion not recorded2 tools