Truth Bear
Official-source facts for AI agents, each with a record_hash you can recompute offline - you never have to trust this server. 64 paid endpoints from $0.005, x402 (USDC on Base or Solana), no API key and no signup. Free coverage check before you pay; no data returns 422 no_charge and you are not billed. Descriptive only: no judgement, no prediction. Hydrology, air quality, precipitation, shipping chokepoints, filings, stablecoin and MCP-ecosystem lifecycles.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"hint": {
"miss": "missing_parameter",
"usage": "/gauge/lifecycle?entity=<value>",
"preview": "/gauge/catalog",
"missing_params": [
"entity"
],
"example_request": "/gauge/lifecycle?entity=coreweave"
},
"error": "Missing required query parameter(s): entity. A request you can run right now: GET /gauge/lifecycle?entity=coreweave\nX-PAYMENT header is required",
"rails": {
"available": [
"base",
"solana"
],
"advertised": [
"base"
],
"optin_hint": "Send \"X-Payment-Network: solana\" (or ?rails=all) to receive every available rail in accepts.",
"optin_header": "X-Payment-Network",
"also_advertised_as": {
"note": "This same 402 is offered twice: the v1 challenge in this body, and a v2 challenge in the PAYMENT-REQUIRED header. They are the SAME offer - identical price, asset and payTo - not two competing ones. Pay with whichever version your client speaks; you do not need both.",
"rails": "The v2 challenge lists the Solana rail without an opt-in, while this v1 body does not. That is deliberate, not a discrepancy: a v1 network:\"solana\" entry makes some v1 clients reject the WHOLE accepts array, so v1 advertises it only on request. A v2 client matches on solana:5eykt4Us... and is unaffected.",
"header": "PAYMENT-REQUIRED",
"naming": "The v2 challenge uses CAIP-2 network ids (eip155:8453, solana:5eykt4Us...) where this v1 body uses the legacy short names (base, solana). Same chains, different identifier scheme - CDP couples the naming to the version, so it cannot be mixed.",
"encoding": "base64 JSON",
"x402_version": 2
}
},
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9fAcC6AC85519d5efad2149DC4C6c3",
"amount": "5000",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://api.truthbear.co/gauge/lifecycle",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"entity": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1",
"industry": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get eve"
}
},
"output": {
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"entity"
],
"properties": {
"entity": {
"type": "string",
"examples": [
"coreweave"
],
"description": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1 -> signals[] where signal_id ends in .lifecycle, then ?signal_id=<id> for its entities[]"
},
"industry": {
"type": "string",
"description": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get every matching line"
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
}
}
}
}
},
"priceUsd": "$0.005",
"discoverable": true,
"outputSchema": {
"type": "object",
"required": [
"entity",
"matched_lines",
"matches",
"record_hash_verifiable"
],
"properties": {
"entity": {
"type": "string",
"description": "The id you asked about, echoed back."
},
"nature": {
"type": "string",
"description": "Descriptive-only statement: state as recorded by the source, never adjudication or forecast."
},
"matches": {
"type": "array",
"items": {
"type": "object",
"properties": {
"entity": {
"type": "string"
},
"status": {
"type": [
"string",
"null"
],
"description": "The band on the official ruler, e.g. operating / at_risk / ended. null when the line publishes no band."
},
"current": {
"description": "The stored reading itself; shape varies by line (part of the hash core)."
},
"sources": {
"description": "Per-source provenance as stored (part of the v3 hash core)."
},
"industry": {
"type": "string",
"description": "The signal_id without the .lifecycle suffix."
},
"lifecycle": {
"type": [
"object",
"null"
],
"description": "birth_at / end_at / death_type / lifespan_days as recorded (part of the hash core)."
},
"signal_id": {
"type": "string",
"description": "e.g. stablecoin.lifecycle"
},
"source_ref": {
"type": [
"string",
"null"
],
"description": "Official source reference (part of the hash core)."
},
"entity_name": {
"type": [
"string",
"null"
]
},
"observed_at": {
"type": [
"string",
"null"
]
},
"record_hash": {
"type": "string",
"description": "Canonical sha256; every hash-core field above is delivered, so you can recompute it offline."
},
"source_tier": {
"type": [
"string",
"null"
],
"description": "Part of the v3 hash core."
},
"snapshot_date": {
"type": "string",
"description": "YYYY-MM-DD of the stored snapshot (part of the hash core)."
},
"data_age_hours": {
"type": [
"number",
"null"
]
},
"standard_ruler": {
"type": [
"object",
"null"
],
"description": "The official ruler as stored, including the status band (part of the v3 hash core)."
},
"hash_core_version": {
"type": [
"integer",
"string",
"null"
]
},
"source_agreement_cv": {
"type": [
"number",
"null"
]
}
}
},
"description": "One element per lifecycle line that tracks this id."
},
"matched_lines": {
"type": "integer",
"description": "How many lifecycle lines track this id. Usually 1; a handful of ids are tracked by 2 lines and then you get both - nothing is picked for you."
},
"decision_points": {
"type": [
"object",
"null"
],
"description": "{count, points:[{tag,current,swappable,how}], note} - decision points you can re-run with a swapped tag (one swapped tag = one call); leave it alone and the original context is the default, at no extra charge"
},
"record_hash_verifiable": {
"type": "object",
"description": "Computed per delivery, not a boast: mode (offline/partial/none), how many of the returned records were actually recomputed server-side, and out of how many."
}
},
"conditionalProperties": {
"last_fact": {
"type": [
"object",
"null"
],
"description": "Most recent qualifying fact for this line and entity, attached centrally (may be absent when the line has no qualifying fact yet)"
},
"decision_points": {
"type": [
"object",
"null"
],
"description": "Swappable decision points for this entity, attached centrally: {count, points:[{tag,current,swappable,how}], note}. Present only when the entity has at least one swappable tag in the index, so bundles for entities without one omit it"
},
"leg_availability": {
"type": [
"object",
"null"
],
"description": "Per-leg degradation disclosure: which legs are present, which are degraded and why. Present only when at least one leg is degraded"
},
"record_hash_verifiable": {
"type": [
"object",
"null"
],
"description": "Whether this response can recompute its own record_hash offline. Present only when the payload carries a top-level record_hash; may be absent on list-shaped deliveries where verifiability is stated per row instead"
}
}
},
"routeTemplate": "/gauge/lifecycle",
"priceUsdNumber": 0.005
}
},
"description": "One id in, its official lifecycle state out - no need to know which line tracks it first. Covers 19 lifecycle lines (stablecoins, AI tools and datasets, neoclouds, DePIN, RWA, carbon projects, ESG funds, tariff measures and more): status band, birth/end dates, death type, lifespan, official source_ref. If two lines track the same id you get BOTH - nothing is picked for you. Unknown id -> 422 no_charge, not billed. Every record carries an offline-recomputable record_hash. $0.0050 per call.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"example": {
"entity": "coreweave"
},
"required": [
"entity"
],
"properties": {
"entity": {
"type": "string",
"examples": [
"coreweave"
],
"description": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1 -> signals[] where signal_id ends in .lifecycle, then ?signal_id=<id> for its entities[]"
},
"industry": {
"type": "string",
"description": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get every matching line"
}
},
"queryParams": {
"entity": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1 -> signals[] where signal_id ends in .lifecycle, then ?signal_id=<id> for its entities[]",
"industry": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get every matching line"
},
"discoverable": true,
"exampleRequest": "/gauge/lifecycle?entity=coreweave"
},
"output": {
"type": "object",
"required": [
"entity",
"matched_lines",
"matches",
"record_hash_verifiable"
],
"properties": {
"entity": {
"type": "string",
"description": "The id you asked about, echoed back."
},
"nature": {
"type": "string",
"description": "Descriptive-only statement: state as recorded by the source, never adjudication or forecast."
},
"matches": {
"type": "array",
"items": {
"type": "object",
"properties": {
"entity": {
"type": "string"
},
"status": {
"type": [
"string",
"null"
],
"description": "The band on the official ruler, e.g. operating / at_risk / ended. null when the line publishes no band."
},
"current": {
"description": "The stored reading itself; shape varies by line (part of the hash core)."
},
"sources": {
"description": "Per-source provenance as stored (part of the v3 hash core)."
},
"industry": {
"type": "string",
"description": "The signal_id without the .lifecycle suffix."
},
"lifecycle": {
"type": [
"object",
"null"
],
"description": "birth_at / end_at / death_type / lifespan_days as recorded (part of the hash core)."
},
"signal_id": {
"type": "string",
"description": "e.g. stablecoin.lifecycle"
},
"source_ref": {
"type": [
"string",
"null"
],
"description": "Official source reference (part of the hash core)."
},
"entity_name": {
"type": [
"string",
"null"
]
},
"observed_at": {
"type": [
"string",
"null"
]
},
"record_hash": {
"type": "string",
"description": "Canonical sha256; every hash-core field above is delivered, so you can recompute it offline."
},
"source_tier": {
"type": [
"string",
"null"
],
"description": "Part of the v3 hash core."
},
"snapshot_date": {
"type": "string",
"description": "YYYY-MM-DD of the stored snapshot (part of the hash core)."
},
"data_age_hours": {
"type": [
"number",
"null"
]
},
"standard_ruler": {
"type": [
"object",
"null"
],
"description": "The official ruler as stored, including the status band (part of the v3 hash core)."
},
"hash_core_version": {
"type": [
"integer",
"string",
"null"
]
},
"source_agreement_cv": {
"type": [
"number",
"null"
]
}
}
},
"description": "One element per lifecycle line that tracks this id."
},
"matched_lines": {
"type": "integer",
"description": "How many lifecycle lines track this id. Usually 1; a handful of ids are tracked by 2 lines and then you get both - nothing is picked for you."
},
"decision_points": {
"type": [
"object",
"null"
],
"description": "{count, points:[{tag,current,swappable,how}], note} - decision points you can re-run with a swapped tag (one swapped tag = one call); leave it alone and the original context is the default, at no extra charge"
},
"record_hash_verifiable": {
"type": "object",
"description": "Computed per delivery, not a boast: mode (offline/partial/none), how many of the returned records were actually recomputed server-side, and out of how many."
}
},
"conditionalProperties": {
"last_fact": {
"type": [
"object",
"null"
],
"description": "Most recent qualifying fact for this line and entity, attached centrally (may be absent when the line has no qualifying fact yet)"
},
"decision_points": {
"type": [
"object",
"null"
],
"description": "Swappable decision points for this entity, attached centrally: {count, points:[{tag,current,swappable,how}], note}. Present only when the entity has at least one swappable tag in the index, so bundles for entities without one omit it"
},
"leg_availability": {
"type": [
"object",
"null"
],
"description": "Per-leg degradation disclosure: which legs are present, which are degraded and why. Present only when at least one leg is degraded"
},
"record_hash_verifiable": {
"type": [
"object",
"null"
],
"description": "Whether this response can recompute its own record_hash offline. Present only when the payload carries a top-level record_hash; may be absent on list-shaped deliveries where verifiability is stated per row instead"
}
}
}
},
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.005 USDC on Base to 0x2d16…4c6c3. The signed payment is good for 5 minutes.
- Paid to
- 0x2d16…4c6c3
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 8qEn3Y…QAY3n
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"example": {
"entity": "coreweave"
},
"queryParams": {
"entity": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1",
"industry": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get eve"
},
"exampleRequest": "/gauge/lifecycle?entity=coreweave"
},
"output": {
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"queryParams"
],
"properties": {
"type": {
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"entity"
],
"properties": {
"entity": {
"type": "string",
"examples": [
"coreweave"
],
"description": "required - the id to look up (e.g. coreweave, terrausd-ust, jasper-ai, helium). Full list: free GET /gauge/catalog?all=1 -> signals[] where signal_id ends in .lifecycle, then ?signal_id=<id> for its entities[]"
},
"industry": {
"type": "string",
"description": "optional - narrow to one line when an id is tracked by more than one (e.g. ai-compute, stablecoin). Omit and you get every matching line"
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
}
}
}
}
},
"priceUsd": "$0.005",
"discoverable": true,
"routeTemplate": "/gauge/lifecycle",
"priceUsdNumber": 0.005,
"outputSchemaRef": "/manifest"
}
}Provenance
- Seen in the source catalog
- 2026-09-07 08:52Z
- Last indexed by Roundhouse
- 2026-09-24 23:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-24 11:16Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 0
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Truth Bear and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Truth%20Bear' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://api.truthbear.co/gauge/lifecycle, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.