ProofFetch — Cited Web Evidence
https://proof-fetch-agent-api.neoaethel.workers.dev/mcp ↗
Description
Free URL preflight. Cited text via separate paid Stripe MPP API.
What our measurements say
ProofFetch — Cited Web Evidence is a remote MCP server published at proof-fetch-agent-api.neoaethel.workers.dev. It has been probed 7 times since 9/12/2026. It answered in 7 of them (100.0%), a near-uninterrupted record. Median response time is 266 ms, placing it among the faster endpoints. It offers a narrow, focused set of 2 tools. On the protocol side it still runs 2025-11-25 and has not moved to the newer spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- preflight tool has clear required parameters (url) with optional maxChars
Weaknesses
- proof_fetch_offer tool has no parameter definitions or error handling documentation
- tool names lack specificity about their unique purposes
- descriptions don't clearly define usage scenarios for either tool
- no constraints or error conditions documented for any tool
proof_fetch_offer— missing parameter definitions and error handling documentationproof_fetch_preflight— description doesn't explicitly state when to use it vs. the offer tool
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 36ms → warm 38ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
proof_fetch_preflightFree public-URL fetchability, provenance, hash, and injection-indicator scan. Does not return page text.
urlstringrequiredmaxCharsinteger
proof_fetch_offerReturn the machine-payable ProofFetch offer and paid HTTP route.
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Legacy
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