api.truthbear.co
No description published for this endpoint.
OtherLiveeip155:8453Exactvia facilitator:thirdweb
Settlements · 30d
1
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$741.75
Verified settled volume
3,232 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0050
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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/history?signal_id=<value>&entity=<value>",
"preview": "/gauge/sample",
"missing_params": [
"signal_id",
"entity"
],
"example_request": "/gauge/history?signal_id=hydrology.river-level&entity=07010000"
},
"error": "Missing required query parameter(s): signal_id, entity. A request you can run right now: GET /gauge/history?signal_id=hydrology.river-level&entity=07010000\nX-PAYMENT header is required",
"rails": {
"available": [
"base"
],
"advertised": [
"base"
],
"optin_hint": "Send \"X-Payment-Network: solana\" (or ?rails=all) to receive every available rail in accepts.",
"optin_header": "X-Payment-Network"
},
"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/history",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"entity": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[",
"signal_id": "required - signal id (genus.species); free list at GET /gauge/catalog (paged; ?all=1 for every line)"
}
},
"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": [
"signal_id",
"entity"
],
"properties": {
"entity": {
"type": "string",
"examples": [
"07010000"
],
"description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[0].entities[]"
},
"signal_id": {
"type": "string",
"examples": [
"hydrology.river-level"
],
"description": "required - signal id (genus.species); free list at GET /gauge/catalog (paged; ?all=1 for every line)"
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
}
}
}
}
},
"priceUsd": "$0.005",
"discoverable": true,
"outputSchema": {
"type": "object",
"required": [
"nature",
"dim",
"history"
],
"properties": {
"dim": {
"type": "string",
"description": "Always the literal \"history\""
},
"grade": {
"type": [
"string",
"null"
],
"description": "Honest data-grade disclosure (e.g. \"screening-level, not decision-grade\")"
},
"scope": {
"type": [
"string",
"null"
],
"description": "Honest statement of scope and limits: monitoring is not forecasting, intelligence is not instruction, and the boundary of what is verifiable"
},
"entity": {
"type": "string",
"description": "Monitored object id (e.g. btc / us / hormuz); full list at free /gauge/catalog or /gauge/preview"
},
"nature": {
"type": "string",
"description": "Neutrality statement: GAUGE supplies observations and trend description only - no judgement, no prediction, no recommendation"
},
"history": {
"type": [
"object",
"null"
],
"description": "Seasonal-percentile projection: single-point position + frequency + percentiles + method and source"
},
"_citation": {
"type": [
"object",
"null"
],
"description": "Offline-verifiable citation: {statement_type, not_advice:bool, claim, fact, source, record_hash, signature(Ed25519), key_id, issuer_DID(did:key), verify_url} - the trust root for zero-trust self-verification"
},
"signal_id": {
"type": "string",
"description": "Signal id in genus.species ASCII binomial form (e.g. crypto.spot / macro.unemployment / shipping.route-disruption); full list at free /gauge/catalog"
},
"provenance": {
"type": [
"object",
"null"
],
"description": "Data lineage: {served_from, data_as_of, oldest_leg_as_of, data_age_hours (frozen age, reference only), age_hours_now (age computed at request time - the real basis for freshness), freshness(fresh|recent|stale), freshness_basis (the cadence and threshold used for this row, as a string), dead_source (optional: upstream frozen or discontinued), data_lineage:[{signal,traceable_to,uncertainty,record_hash,...}], validation_status}. Freshness is cadence-aware, so monthly/quarterly/annual official lines are not misjudged against a 24h rule; the same basis is used by free /gauge/coverage. Buyers can trace back to the official source"
},
"entity_name": {
"type": [
"string",
"null"
],
"description": "Human-readable name of the object"
},
"observed_at": {
"type": "string",
"description": "Actual observation time of the data, ISO-8601"
},
"record_hash": {
"type": [
"string",
"null"
],
"description": "sha256:<64hex> (contract A v3, binds the values plus provenance)"
},
"data_age_hours": {
"type": [
"number",
"null"
],
"description": "Age frozen at collection time (0 = same hour), for reference only - if a collector stalls this field stops moving. For freshness always use provenance.age_hours_now (computed at request time) and provenance.freshness; the threshold basis is in provenance.freshness_basis"
},
"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"
},
"source_agreement_cv": {
"type": [
"number",
"null"
],
"description": "Multi-source agreement, coefficient of variation (smaller = closer agreement). Present ONLY when two or more CONFIRMED-INDEPENDENT sources measure the same fact at the same time - see sources[].independent. Same source relayed through two channels does not count as independent, and two different time bases (daily mean vs spot) do not count as agreement. Single-source / unconfirmed independence / not applicable -> null"
},
"record_hash_verifiable": {
"type": [
"object",
"null"
],
"description": "{mode:offline|via-endpoint, note}"
}
},
"additionalProperties": true,
"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/history",
"priceUsdNumber": 0.005
}
},
"description": "Add-on, historical placement: seasonal percentile for the current point, frequency, the percentile table, and the method and source used to compute them. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.0050 per call.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"example": {
"entity": "07010000",
"signal_id": "hydrology.river-level"
},
"required": [
"signal_id",
"entity"
],
"properties": {
"entity": {
"type": "string",
"examples": [
"07010000"
],
"description": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[0].entities[]"
},
"signal_id": {
"type": "string",
"examples": [
"hydrology.river-level"
],
"description": "required - signal id (genus.species); free list at GET /gauge/catalog (paged; ?all=1 for every line)"
}
},
"queryParams": {
"entity": "required - monitored object id, paired with signal_id; free list at GET /gauge/catalog?signal_id=<signal_id> -> signals[0].entities[]",
"signal_id": "required - signal id (genus.species); free list at GET /gauge/catalog (paged; ?all=1 for every line)"
},
"discoverable": true,
"exampleRequest": "/gauge/history?signal_id=hydrology.river-level&entity=07010000"
},
"output": {
"type": "object",
"required": [
"nature",
"dim",
"history"
],
"properties": {
"dim": {
"type": "string",
"description": "Always the literal \"history\""
},
"grade": {
"type": [
"string",
"null"
],
"description": "Honest data-grade disclosure (e.g. \"screening-level, not decision-grade\")"
},
"scope": {
"type": [
"string",
"null"
],
"description": "Honest statement of scope and limits: monitoring is not forecasting, intelligence is not instruction, and the boundary of what is verifiable"
},
"entity": {
"type": "string",
"description": "Monitored object id (e.g. btc / us / hormuz); full list at free /gauge/catalog or /gauge/preview"
},
"nature": {
"type": "string",
"description": "Neutrality statement: GAUGE supplies observations and trend description only - no judgement, no prediction, no recommendation"
},
"history": {
"type": [
"object",
"null"
],
"description": "Seasonal-percentile projection: single-point position + frequency + percentiles + method and source"
},
"_citation": {
"type": [
"object",
"null"
],
"description": "Offline-verifiable citation: {statement_type, not_advice:bool, claim, fact, source, record_hash, signature(Ed25519), key_id, issuer_DID(did:key), verify_url} - the trust root for zero-trust self-verification"
},
"signal_id": {
"type": "string",
"description": "Signal id in genus.species ASCII binomial form (e.g. crypto.spot / macro.unemployment / shipping.route-disruption); full list at free /gauge/catalog"
},
"provenance": {
"type": [
"object",
"null"
],
"description": "Data lineage: {served_from, data_as_of, oldest_leg_as_of, data_age_hours (frozen age, reference only), age_hours_now (age computed at request time - the real basis for freshness), freshness(fresh|recent|stale), freshness_basis (the cadence and threshold used for this row, as a string), dead_source (optional: upstream frozen or discontinued), data_lineage:[{signal,traceable_to,uncertainty,record_hash,...}], validation_status}. Freshness is cadence-aware, so monthly/quarterly/annual official lines are not misjudged against a 24h rule; the same basis is used by free /gauge/coverage. Buyers can trace back to the official source"
},
"entity_name": {
"type": [
"string",
"null"
],
"description": "Human-readable name of the object"
},
"observed_at": {
"type": "string",
"description": "Actual observation time of the data, ISO-8601"
},
"record_hash": {
"type": [
"string",
"null"
],
"description": "sha256:<64hex> (contract A v3, binds the values plus provenance)"
},
"data_age_hours": {
"type": [
"number",
"null"
],
"description": "Age frozen at collection time (0 = same hour), for reference only - if a collector stalls this field stops moving. For freshness always use provenance.age_hours_now (computed at request time) and provenance.freshness; the threshold basis is in provenance.freshness_basis"
},
"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"
},
"source_agreement_cv": {
"type": [
"number",
"null"
],
"description": "Multi-source agreement, coefficient of variation (smaller = closer agreement). Present ONLY when two or more CONFIRMED-INDEPENDENT sources measure the same fact at the same time - see sources[].independent. Same source relayed through two channels does not count as independent, and two different time bases (daily mean vs spot) do not count as agreement. Single-source / unconfirmed independence / not applicable -> null"
},
"record_hash_verifiable": {
"type": [
"object",
"null"
],
"description": "{mode:offline|via-endpoint, note}"
}
},
"additionalProperties": true,
"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.
0.005USDC≈ $0.005 USD
on Base · exact scheme
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
- Returns
- application/json
5000units
on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme
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
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.truthbear.co/gauge/history",
"description": "",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.truthbear.co/gauge/history",
"description": "",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
]Provenance
- Seen in the source catalog
- 2026-09-07 08:52Z
- Last indexed by Roundhouse
- 2026-10-05 03:15Z
- Last enriched (probe, favicon, geo)
- 2026-09-27 09:15Z
- x402 version
- 1
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service api.truthbear.co 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=api.truthbear.co' 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/history, 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. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.