mcp server

truthbear-mcp

Neutral MCP server: verifiable official-source records for AI agents — offline-recomputable record_hash + Ed25519 citation on every paid record. Pay-per-call via x402, no API key. Third-party relay of

CHANGCHINFU/truthbear-mcpcommunitylistedunreviewed

Use tool

Set up

Hosted by its author. Add the URL to your agent — nothing to install.

~/Library/Application Support/Claude/claude_desktop_config.json

Settings → Connectors → Add custom connector

Name: truthbear-mcp
URL:  https://api.truthbear.co/mcp

same format Cursor, GitHub Copilot CLI, Junie, JetBrains AI Assistant, Augment (Auggie CLI), Factory Droid, Kiro, Devin CLI +12

Values in angle brackets are placeholders. Restart Claude Desktop after editing its config.Claude Desktop docs

README

synced Nov 8, 2026

Truth Bear — verifiable official-source data for AI agents (MCP)

Neutral, third-party access to official public records — US federal agencies, named registries and standards bodies — where every paid record ships an offline-recomputable record_hash and an Ed25519-signed citation. Pay per call in USDC via x402. No account, no API key.

Truth Bear restates official records faithfully; it does not adjudicate, advise, or endorse. The authoritative source is the official publisher named in every citation — verify and dispute there.

Add it (remote MCP server)

{
  "mcpServers": {
    "truthbear": { "url": "https://api.truthbear.co/mcp" }
  }
}

JSON-RPC 2.0 over HTTP POST (initialize / tools/list / tools/call). No key needed to list or verify; paid tools return a real x402 payment challenge you settle from your own wallet.

Tools

Tool	Cost	What it does
`find_signal`	FREE	Coverage + freshness: which signals exist, queryable before you pay
`verify_citation`	FREE	Check a `record_hash`, get the official reverse-lookup
`purchase_options`	FREE	How to pay for a listed endpoint
`verify_triangular`	FREE	Cross-verify one interwoven official line
`get_official_record`	x402	Returns a real payment challenge; pay, then receive the signed official record

What you pay for

Not the raw public number (free at its source) — the aggregation + official-source provenance + offline cryptographic verifiability, pre-joined into one schema.

Verify offline, against the primary source

Every paid record carries a record_hash (canonical sha256, independently recomputable) and an Ed25519 citation. SEC-filing settlement evidence also ships a durable_anchor (an immutable SEC accession + permanent document URL) that re-verifies at any time, not only at read time.

Coverage (90 industries)

Macro (FRED / US Treasury / BLS), energy (EIA), weather & disaster (NOAA / USGS / NWS / SPC / FEMA), health (openFDA / CDC), sanctions (OFAC / EU), trade (USITC), SEC EDGAR filings, and more.

Try it

# free: what exists
curl https://api.truthbear.co/manifest

# free: MCP tool list
curl "https://api.truthbear.co/manifest?platform=mcp"

# settlement evidence feed (x402, $0.01): did an issuer file a form before a cutoff?
curl "https://api.truthbear.co/resolve/proposer?entity=AAPL&form=10-K&cutoff=2025-11-15"

Terms

Third-party relay of official records plus cross-source analysis. We warrant faithful relay (the hash recomputes against the cited official source), not the correctness of the source itself. Reference only — not advice, not adjudication, not a market resolution; the independent judgement and decision are the user's own. Full provider notice: https://api.truthbear.co/terms

License

MIT (this listing/readme). The API itself is a hosted service governed by the Terms above.