I tell you a verifiable fact and its official source. The rest, you decide. Verifiable screening intelligence: official-source signals measured against one common ruler, every record carrying a record_hash (canonical sha256, recomputable offline; cross-check free at /gauge/verify) so you can self-verify. Pay per call (x402, USDC on Base, no API key). Purely descriptive - no judgement, no prediction.
Data engine: GAUGE (six forensic lines E/B/D/C/A/T: stablecoins, AI tools, AI dependencies, promises, carbon, climate policy, plus environment / hydrology / air quality / precipitation / power grid / regulatory filings).
Open-source data description API - collected from official sources (current uses the USGS real-time reading, previous takes the real-time value 24h earlier on the same basis, trend uses the USGS daily mean), cleaned into one schema, with source independence labelled per record, plus two rulers: the standard ruler (how far from the flood threshold) and the statistical ruler (is this normal over the last 5 years: routine / rare / unusual) - purely descriptive, no judgement, no prediction. Flood-risk & river-anomaly check (gage height / streamflow / flood stage; official USGS/NOAA/EPA sources, verifiable record_hash, pay-per-call, no API key). Three legs: hydrology x air quality x precipitation. Free: /gauge/coverage (coverage list + freshness, check before you pay), /gauge/history-preview (shape of the last 7 snapshots), /gauge/raw (hydrology reading), /gauge/sample, /gauge/preview, /gauge/catalog | Add-on model: /gauge (multi-source reading bundle), per-item rulers /gauge/ruler /calibrated /strata /history /air /precip, /gauge/history-series?signal_id=&entity=&format= (full time series / CSV export, for research and actuarial work), /gauge/<topic>-region?loc= (three-leg cross-validation bundle), /gauge/census | The current price of every endpoint is whatever /manifest says (prices are deliberately not hardcoded here: a hand-written price table once drifted, so the advertised price stopped matching the real one) | Core value: cross-line cascade (downstream exposure) + leading signals + screening across aggregated official sources; every record can be self-verified by recomputing record_hash offline (Bitcoin/OTS anchoring was retired on 2026-07-23 and is no longer offered)
Machine-readable discovery: /manifest (= /.well-known/x402, lists every paid resource with price and schema) | Full capabilities: /.well-known/agent.json, /llms.txt | Zero-trust self-verification: /merkle/spec, POST /verify
{
"service": "Truth Bear - verifiable screening intelligence for AI agents (x402, USDC on Base, GAUGE data engine)",
"nature": "Neutral record: verifiable observed facts plus a record_hash integrity attestation. No speculation, no adjudication, no certification, no legal endorsement. Interpretation and use are the recipient responsibility.",
"endpoints": {
"info": "/",
"manifest": "/manifest",
"stablecoin_deaths": {
"preview": "/stablecoin-deaths/preview",
"data": "/stablecoin-deaths (paid)",
"proof": "/proof/:record_hash",
"verify": "/verify (POST)"
},
"trust_x402_services": {
"preview": "/trust/preview",
"precheck": "/trust/precheck?service=<id> (paid)",
"scorecard": "/trust/scorecard (paid)",
"graveyard": "/trust/graveyard (paid)"
},
"mcp_ecosystem": {
"preview": "/mcp/preview",
"server": "/mcp/server?name=<id> (paid)",
"census": "/mcp/census (paid)",
"graveyard": "/mcp/graveyard (paid)"
},
"stablecoin_census": {
"preview": "/stable/preview",
"coin": "/stable/coin?symbol=<sym> (paid)",
"census": "/stable/census (paid)",
"graveyard": "/stable/graveyard (paid)"
},
"agent_economy_checkup": {
"preview": "/checkup/preview",
"listing_status": "delisted (the three paid endpoints are temporarily off the shelf, see /checkup/preview)"
}
},
"verify": "Every record carries a record_hash. Verify it with the free /verify or the offline verify.mjs - zero trust in this endpoint required.",
"payment": {
"protocol": "x402",
"network": "base",
"price": "$0.09"
},
"base_app_id": "6a4cc73c870a5c6046dc944b"
}