Truth Bear MCP Server

by changchinfu Your server? Claim it

answering

Truth Bear is answering right now. Last checked 4 min ago. It exposes 5 tools. Last commit 8 Nov 2026.

Verifiable official-source records for AI agents: record_hash + Ed25519 citation, x402 per-call

Uptime history 9 hours of history

9 hours agonow

100.0%

Uptime 24h

31 of 31 checks

Tools

read from the server

963 ms

Response time

average over 24h

Stars

last commit 8 Nov 2026

Nothing serious here today

Today is the operative word: we check Truth Bear every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add truthbear-mcp --transport http https://api.truthbear.co/mcp

Settings → Connectors → Add custom connector, then paste this address

https://api.truthbear.co/mcp

~/.codex/config.toml

[mcp_servers.truthbear-mcp]
url = "https://api.truthbear.co/mcp"

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "truthbear-mcp": {
      "type": "http",
      "url": "https://api.truthbear.co/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

verify

verify_citation

FREE. Given a record_hash from any Truth Bear record, look it up and recompute the canonical hash server-side, returning whether it is a genuine Truth Bear official record plus a plain-language reverse lookup of what exactly that hash attests. Use this to check a citation you were handed by another agent or document BEFORE relying on it. No payment, no API key.

verify_triangular

FREE. Cross-verify one GAUGE interweave line: it returns each official series ("leg") in the line with its own record_hash, current/previous values, expected direction and per-leg minMove deadband, plus a count-style state (directions_matched / direction_mismatch / inverse_consistent / not_comparable / insufficient) and N-of-M. Everything needed to recompute the verdict OFFLINE is in the response - verify each leg hash with verify_citation, then recompute dir=sign(current-previous) with the minMove deadband. Descriptive only: no forecast, no causation, no advice. No payment, no API key.

official

get_official_record

Returns the REAL x402 payment challenge (accepts[]: network / asset / payTo / amount) for the paid endpoint that serves a given signal_id+entity, or any listed endpoint addressed directly by `path`. This tool does NOT deliver paid data and does NOT take payment - MCP has no payment layer. Pay at the returned url with your own x402 client (USDC on Base or Solana, gasless EIP-3009; pay from a plain EOA) and you receive the record directly, with record_hash you can verify offline. This tool only fetches the 402 challenge; it delivers no paid data and collects no payment.

purchase

purchase_options

FREE. Ask how to pay for a listed endpoint and get every channel with its REAL status - including the ones that are wired but not open yet. Three channels exist: x402 micropayment (for an agent with a funded USDC wallet on Base), a stateless subscription Bearer token (for a person or team - no wallet, no private key, no account), and a card rail. This tool takes no payment and holds no key; it only tells you which doors exist and which are open today.

signal

find_signal

FREE coverage + freshness manifest: which signal_id lines exist, how many entities each covers, and fresh/recent/stale counts - so you can check "is my entity covered and how fresh" BEFORE paying. Optional filters: industry, signal_id, entity.

Endpoints

URL	Transport	State	Latency	Checked
https://api.truthbear.co/mcp	streamable-http	answering	889 ms	4 min ago

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SourcePilot Research

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Aga MCP Server

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Verifiable decision records for AI agents: signed receipts for calls to its own governed tools.

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Agent Receipts

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Ed25519-signed receipts for every AI agent action. Local-first, verifiable, no server required.

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Underindex

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Verified records on 60 niche fashion subcultures for AI agents, $0.01 per lookup over x402

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Truth Bear — questions

Answers built from our own checks of this server.

What can Truth Bear do?

It exposes 5 tools, read directly from the server on our last check. Among them: find_signal, get_official_record, purchase_options, verify_citation, verify_triangular. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Truth Bear working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 31 of 31 checks got a reply (100.0%), average response time 963 ms. The bar chart above shows every period we have measured.

How do I connect Truth Bear?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Truth Bear need an API key?

No. Truth Bear completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Truth Bear?

It answers our handshake in 963 ms on average, which is faster than 6% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Truth Bear open source?

The code is open source: it is published under the MIT licence and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at api.truthbear.co, which runs on its operator's own terms.