# Truth Bear — Cross-Line Cascade & Leading Signals for AI Agents (GAUGE engine)

> Pay-per-call signals for AI agents via x402 (USDC on Base, no API key). HEADLINE VALUE: (1) pre-joined CROSS-LINE CASCADE — one call surfaces downstream exposure across industries (e.g. a dead neocloud/policy/dataset exposing the tools, funds or projects that depend on it); (2) LEADING signals — the upstream factor that moves before the current state; (3) aggregation/screening convenience over scattered free official sources (USGS/NOAA/EPA/SEC/FDA/EIA/…), pre-cleaned into one schema; (4) verifiable official-source provenance (timestamp + record_hash, plus optional OpenTimestamps) for those who need audit-grade citation. Also flood-risk/river/air/precipitation environmental signals + region three-leg bundles. Pure description, no judgment/prediction. Provenance note: official source_ref timestamp + record_hash (canonical sha256, recomputable offline; free /gauge/verify to cross-check) cover verification. Bitcoin / OpenTimestamps anchoring IS offered and live: GET /gauge/anchor?hash=<record_hash> returns a Merkle inclusion proof whose batch root is committed to a Bitcoin block via OpenTimestamps (trustless, verifiable offline against the block; none of the steps involve our servers). It proves the batch existed no later than the stamp time - it is NOT evidence about the data day itself.

- **Domain**: `api.truthbear.co`
- **Provider**: Truth Bear (https://api.truthbear.co)
- **A2A protocol version**: 1.0
- **Kind**: paid_api
- **Category**: data
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 90%
- **Payment protocol**: x402 · network `eip155:8453`
- **Wallet**: `0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3`

## Skills
- **One official signal record for any signal_id and entity** — One official signal record for any signal_id and entity | GET /gauge | price $0.01 via x402
- **Raw hydrology reading (free)** — Raw hydrology reading (free) | GET /gauge/raw | price free via x402
- **Coverage + freshness manifest (free)** — Coverage + freshness manifest (free) | GET /gauge/coverage | price free via x402
- **Local three-leg environment chain** — Local three-leg environment chain | GET /gauge/region | price $0.25 via x402
- **All entities for one signal at their latest reading** — All entities for one signal at their latest reading | GET /gauge/census | price $0.09 via x402
- **Full retained series for one signal and entity** — Full retained series for one signal and entity | GET /gauge/history-series | price $0.09 via x402
- **Batch watchlist read (subscription-gated, no per-call pay)** — Batch watchlist read (subscription-gated, no per-call pay) | GET /gauge/watch | price free (subscription token required) via x402
- **Watchlist delta / poll (subscription-gated, webhook-lite)** — Watchlist delta / poll (subscription-gated, webhook-lite) | GET /gauge/watch-changes | price free (subscription token required) via x402
- **Agriculture chain, one grain belt** — Agriculture chain, one grain belt | GET /gauge/agri-region | price $0.25 via x402
- **Power-grid chain, one grid region** — Power-grid chain, one grid region | GET /gauge/grid-region | price $0.25 via x402
- **Regulatory filing chain, one issuer** — Regulatory filing chain, one issuer | GET /gauge/filing-company | price $0.25 via x402
- **Wildfire chain, one fire-risk region** — Wildfire chain, one fire-risk region | GET /gauge/wildfire-region | price $0.25 via x402
- **Aviation ground-stop chain** — Aviation ground-stop chain | GET /gauge/nas-region | price $0.25 via x402
- **Land border chain, one crossing** — Land border chain, one crossing | GET /gauge/border-wait-region | price $0.25 via x402
- **Seismic activity chain, one seismic zone** — Seismic activity chain, one seismic zone | GET /gauge/earthquake-region | price $0.25 via x402
- **Drug shortage chain, one therapeutic class** — Drug shortage chain, one therapeutic class | GET /gauge/drug-shortage-region | price $0.25 via x402
- **Per-drug shortage chain, one drug** — Per-drug shortage chain, one drug | GET /gauge/drug-detail-region | price $0.25 via x402
- **Severe convection and hail chain** — Severe convection and hail chain | GET /gauge/severe-convection-region | price $0.25 via x402
- **Grid reliability chain, one balancing authority** — Grid reliability chain, one balancing authority | GET /gauge/grid-reliability-region | price $0.25 via x402
- **Hurricane chain, one basin** — Hurricane chain, one basin | GET /gauge/hurricane-region | price $0.25 via x402
- **Drought chain, one drought region** — Drought chain, one drought region | GET /gauge/drought-region | price $0.25 via x402
- **Stablecoin death samples, a neutral record** — Stablecoin death samples, a neutral record | GET /stablecoin-deaths | price $0.09 via x402
- **Demand record for one x402 service** — Demand record for one x402 service | GET /trust/precheck | price $0.01 via x402
- **Full x402 service demand roster** — Full x402 service demand roster | GET /trust/scorecard | price $0.09 via x402
- **x402 service graveyard, services that vanished from the census** — x402 service graveyard, services that vanished from the census | GET /trust/graveyard | price $0.09 via x402
- **Census record for one stablecoin** — Census record for one stablecoin | GET /stable/coin | price $0.01 via x402
- **Full stablecoin census, latest day** — Full stablecoin census, latest day | GET /stable/census | price $0.09 via x402
- **Stablecoin death register, terminated below 0.10 or persistently absent** — Stablecoin death register, terminated below 0.10 or persistently absent | GET /stable/graveyard | price $0.09 via x402
- **Settlement evidence v0 for prediction-market and dispute workflows** — Settlement evidence v0 for prediction-market and dispute workflows | GET /resolve | price $0.09 via x402
- **Proposer feed for prediction-market settlement** — Proposer feed for prediction-market settlement | GET /resolve/proposer | price $0.01 via x402
- **Add-on, the official ruler** — Add-on, the official ruler | GET /gauge/ruler | price $0.005 via x402
- **Add-on, calibrated units, normalized_index and pct_to_action so readings compare across** — Add-on, calibrated units, normalized_index and pct_to_action so readings compare across | GET /gauge/calibrated | price $0.005 via x402
- **Add-on, statistical strata** — Add-on, statistical strata | GET /gauge/strata | price $0.005 via x402
- **Add-on, historical placement** — Add-on, historical placement | GET /gauge/history | price $0.005 via x402
- **Add-on, air quality for one location** — Add-on, air quality for one location | GET /gauge/air | price $0.005 via x402
- **Add-on, precipitation for one location** — Add-on, precipitation for one location | GET /gauge/precip | price $0.005 via x402
- **Taiwan first-party official readings in one call** — Taiwan first-party official readings in one call | GET /gauge/taiwan-region | price $0.25 via x402
- **Japan official readings in one call plus an independent cross-agency check** — Japan official readings in one call plus an independent cross-agency check | GET /gauge/japan-region | price $0.25 via x402
- **Market-implied against officially-realized** — Market-implied against officially-realized | GET /gauge/macro-reconcile-full | price $0.09 via x402
- **/gauge/triangle** — /gauge/triangle | GET /gauge/triangle | price $0.25 via x402
- **Tiered payment receipt (tier 2)** — Tiered payment receipt (tier 2) | GET /pay/tier2 | price $0.03 via x402
- **Tiered payment receipt (tier 3)** — Tiered payment receipt (tier 3) | GET /pay/tier3 | price $0.10 via x402

## URLs
- Agent card: https://api.truthbear.co/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/api.truthbear.co
- Documentation: https://api.truthbear.co/llms.txt