# Truth Bear

I tell you a verifiable fact and its official source. The rest, you decide.

Verifiable screening intelligence for AI agents. Official-source facts measured against one common
ruler, every record carrying a record_hash (canonical sha256, recomputable offline) so you can
self-verify without trusting this server. Pay per call over x402 (USDC on Base, no API key, no signup).
Descriptive only - no judgement, no prediction.

## Start here if you are deciding whether to trust this source
- https://api.truthbear.co/.well-known/verification.json  - one document: catalogue size, protocol versions, schema-phantom
  count, paid-response cache policy, and how to recompute any record_hash. Every number computed at
  request time; every block carries a verify_yourself URL.
- https://api.truthbear.co/.well-known/agent-registration.json - ERC-8004 identity (on-chain, Base)

## Catalogue and payment
- https://api.truthbear.co/manifest              - every paid resource with price and schema
- https://api.truthbear.co/.well-known/x402.json - Bazaar-shaped service catalogue
- https://api.truthbear.co/openapi.json          - OpenAPI 3.1
- https://api.truthbear.co/mcp                   - MCP endpoint (streamable HTTP)

## Free before you pay
- https://api.truthbear.co/gauge/coverage?summary=1 - is my entity covered, and how fresh
- https://api.truthbear.co/gauge/catalog            - which signal_id x entity pairs exist
- https://api.truthbear.co/gauge/verify?hash=       - cross-check any record_hash we issued

## Full text
- https://api.truthbear.co/llms.txt  - link index
- https://api.truthbear.co/skill.md  - how to call this service