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TruthBear Earthquake Region Gauge (3-Leg Chain)
x402
TruthBear Earthquake Region Gauge (3-Leg Chain) is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Returns a 3-leg sequential seismic activity chain for a specified earthquake zone, covering leading swarm rates, current USGS micro-event rates and max magnitude, and realized felt/impact reports — descriptive only, never a forecast.
Price / call$0.25
Success—
StatusUnknown
How this service works
Truth Bear reports facts and their official sources — screening-grade, verifiable, not predictions or advice. Pay per call with USDC (x402) or a 30-day access pass by card / Apple Pay / Google Pay / PayPal.
Output
A JSON object representing up to three sequential chain legs in order: (1) leading swarm rate signal, (2) current USGS micro-event rate, current max magnitude, and event count, and (3) realized felt and impact report confirmations. Confidence is expressed as the number of legs currently active and in sequence. Returns a 422 no_charge if no data is available for the requested entity, and the call is not billed.
Example use cases
Cascadia subduction zone swarm alert
“Check the earthquake gauge for cascadia-pnw — I want to know if swarm rates are rising, what the current micro-event count and max magnitude look like, and whether any felt reports have been confirmed.”
Japan seismic status before infrastructure decision
“Pull up the current 3-leg seismic chain for Japan and tell me how many of the legs are active and what the latest USGS event rate and felt impact data show.”
Automated daily Aleutians seismic digest
“Grab today's seismic activity gauge for alaska-aleutians — give me the leading swarm rate, current max magnitude, and any realized felt reports so I can include them in my daily hazard briefing.”
Technical details
Endpoint
GEThttps://api.truthbear.co/gauge/earthquake-regionWhen to prefer
Choose this endpoint when you need a structured, multi-stage descriptive snapshot of seismic activity for a specific named fault zone or seismic region, sourced from USGS, with built-in confidence signaling via leg count. Prefer this over raw USGS feeds when you want pre-packaged leading-to-lagging signal chaining (swarm → event rate → felt reports) without building the aggregation yourself. Do not use this for earthquake forecasting, prediction, or advisory — it is explicitly descriptive only.
Side effects
- 422 no_charge: no data available for the requested entity — call is not billed
- Invalid or unsupported entity ID returns an error — use /gauge/catalog?signal_id= to get valid entity IDs
- Network or upstream USGS data unavailability may result in partial leg data or empty response
- Unrecognized query parameter (additionalProperties: false) causes request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"legs": {
"swarm_rate": {
"band": "baseline",
"source_ref": "https://earthquake.usgs.gov/",
"record_hash": "sha256:af7d5ce3ff47de06f8c4d68751418cb34e01c10faee588a7eaac118bd4dac5bb"
},
"impact_realized": {
"band": "felt",
"source_ref": "https://earthquake.usgs.gov/",
"record_hash": "sha256:d953b6d5974998bcc4efe988dff6b6a7cf8382c9c8e417a88974c47796215bbe"
},
"current_activity": {
"band": "minor",
"source_ref": "https://earthquake.usgs.gov/",
"record_hash": "sha256:a840cddfd12ff422ef70ddd9aa3ef96a8fbeb0bf942e7ebc4a220a24fa4b0eec"
}
},
"name": "California (San Andreas)",
"grade": "screening-level, not decision-grade",
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"verifiability": "unknown",
"monitoring_not_forecast": true,
"intelligence_not_command": true
},
"entity": "california-san-andreas",
"nature": "This API supplies data organisation and trend description only. It is not a recommendation to act; the decision is yours. Purely descriptive - no judgement, no prediction. Official source plus record_hash; verify with the free /gauge/verify.",
"provenance": {
"freshness": "fresh",
"age_hours_now": 0,
"freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
}
}
}Tags
x402
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