Truth Bear
[4-LEG] Maritime chokepoint passage chain, one chokepoint (?loc=hormuz, suez, panama, malacca and more): leading sea state against operating thresholds -> current anchorage congestion, vessels waiting -> realized daily transits from IMF PortWatch (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: IMF PortWatch, NOAA, Open-Meteo. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.
TradingLiveeip155:8453Exactvia cdp
GaugeChokepointRegionImf-portwatchNoaa
Calls · 30d
10↓ 17%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$741.74
Verified settled volume
3,231 settlements proven x402 by their on-chain EIP-3009 marker.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-09-07 08:52Z
—
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
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/chokepoint-region?loc=<value>",
"preview": "/gauge/preview",
"missing_params": [
"loc"
],
"example_request": "/gauge/chokepoint-region?loc=hormuz&format=thin"
},
"error": "Missing required query parameter(s): loc. A request you can run right now: GET /gauge/chokepoint-region?loc=hormuz&format=thin\nX-PAYMENT header is required. This endpoint costs $0.25 USDC, above the x402 client default maxValue of $0.10 — raise maxValue to at least 250000 atomic units, or your own client rejects this payment locally and no request ever reaches us. Do not want to raise it? A cheaper alternative you can run right now: GET /gauge?signal_id=hydrology.river-level&entity=07010000&format=thin ($0.01 USDC) - the same official signal plus its offline-recomputable proof - no three-leg chain, one signal only.",
"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": "250000",
"scheme": "exact",
"network": "base",
"mimeType": "application/json",
"resource": "https://api.truthbear.co/gauge/chokepoint-region",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"loc": "required - location id; full list at free /gauge/preview"
}
},
"output": {
"type": "json",
"example": {
"legs": {
"transit": {
"band": null,
"source_ref": "IMF PortWatch Daily_Chokepoints_Data portid=chokepoint6(Strait of Hormuz,2026-08-21)",
"record_hash": "sha256:699bbca83ca77e0570a48c767d25e174e37cf51ceed012b13793f3c485ddc1f6"
},
"sea_state": {
"band": null,
"source_ref": "https://open-meteo.com/en/docs/marine-weather-api",
"record_hash": "sha256:6210ac5c3a486067756bca585c841541397171e0310cd9bae667b8a848563b5b"
},
"congestion": {
"band": "no-coverage",
"source_ref": "https://aisstream.io/documentation",
"record_hash": "sha256:a2a9e86d3147cee9f7ecbeb797ae8717a73f734a04b77af195c0f33874b906cd"
},
"disruption": {
"band": "operable",
"source_ref": "https://open-meteo.com/en/docs/marine-weather-api",
"record_hash": "sha256:5ced2956a016d5b4523e3eff6def79ee891f576ead9c805455c0df6b94df2bef"
}
},
"name": "Strait of Hormuz",
"grade": "screening-level, not decision-grade",
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"verifiability": "unknown",
"monitoring_not_forecast": true,
"intelligence_not_command": true
},
"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": "recent",
"age_hours_now": 135.4,
"freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
}
}
}
},
"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": [
"loc"
],
"properties": {
"loc": {
"type": "string",
"examples": [
"suez-redsea",
"panama-pacific",
"malacca",
"hormuz",
"goodhope",
"channel"
],
"description": "required - location id; full list at free /gauge/preview",
"x-accepted-values": {
"all": "https://api.truthbear.co/schemas/gauge-chokepoint-region.input.json",
"shown": 6,
"total": 12
}
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
},
"example": {}
}
}
}
},
"priceUsd": "$0.25",
"discoverable": true,
"outputSchema": {
"type": "object",
"required": [
"legs",
"provenance"
],
"properties": {
"legs": {
"type": "object",
"properties": {
"transit": {
"type": [
"object",
"null"
],
"description": "Realized transits observed (main leg)."
},
"sea_state": {
"type": [
"object",
"null"
],
"description": "Sea/weather workability (upstream cause leg)."
},
"congestion": {
"type": [
"object",
"null"
],
"description": "Anchorage congestion (upstream leg)."
},
"disruption": {
"type": [
"object",
"null"
],
"description": "Route disruption (downstream cross-check leg)."
}
},
"description": "The three-plus legs of this chokepoint, each the latest stored reading or null."
},
"name": {
"type": "string",
"description": "Human-readable name of the chokepoint."
},
"note": {
"type": "string",
"description": "Descriptive-only statement of what was restated and from whom."
},
"chokepoint": {
"type": "string",
"description": "The chokepoint id that was requested."
},
"provenance": {
"type": "object",
"description": "served_from, data_as_of, oldest_leg_as_of, age_hours_now, freshness."
}
},
"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/chokepoint-region",
"priceUsdNumber": 0.25
}
},
"description": "[4-LEG] Maritime chokepoint passage chain, one chokepoint (?loc=hormuz, suez, panama, malacca and more): leading sea state against operating thresholds -> current anchorage congestion, vessels waiting -> realized daily transits from IMF PortWatch (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: IMF PortWatch, NOAA, Open-Meteo. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.",
"outputSchema": {
"input": {
"type": "http",
"method": "GET",
"example": {
"loc": "hormuz",
"format": "thin"
},
"required": [
"loc"
],
"properties": {
"loc": {
"type": "string",
"examples": [
"suez-redsea",
"panama-pacific",
"malacca",
"hormuz",
"goodhope",
"channel"
],
"description": "required - location id; full list at free /gauge/preview",
"x-accepted-values": {
"all": "https://api.truthbear.co/schemas/gauge-chokepoint-region.input.json",
"shown": 6,
"total": 12
}
}
},
"queryParams": {
"loc": "required - location id; full list at free /gauge/preview"
},
"discoverable": true,
"exampleRequest": "/gauge/chokepoint-region?loc=hormuz&format=thin"
},
"output": {
"type": "object",
"required": [
"legs",
"provenance"
],
"properties": {
"legs": {
"type": "object",
"properties": {
"transit": {
"type": [
"object",
"null"
],
"description": "Realized transits observed (main leg)."
},
"sea_state": {
"type": [
"object",
"null"
],
"description": "Sea/weather workability (upstream cause leg)."
},
"congestion": {
"type": [
"object",
"null"
],
"description": "Anchorage congestion (upstream leg)."
},
"disruption": {
"type": [
"object",
"null"
],
"description": "Route disruption (downstream cross-check leg)."
}
},
"description": "The three-plus legs of this chokepoint, each the latest stored reading or null."
},
"name": {
"type": "string",
"description": "Human-readable name of the chokepoint."
},
"note": {
"type": "string",
"description": "Descriptive-only statement of what was restated and from whom."
},
"chokepoint": {
"type": "string",
"description": "The chokepoint id that was requested."
},
"provenance": {
"type": "object",
"description": "served_from, data_as_of, oldest_leg_as_of, age_hours_now, freshness."
}
},
"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": "250000",
"maxTimeoutSeconds": 300
}
],
"client_hint": {
"action": "This endpoint costs $0.25 USDC, above the x402 client default maxValue of $0.10. Raise your client maxValue to at least required_atomic; otherwise the payment is rejected locally inside your own client and never reaches this server, so you will see no error from us.",
"reason": "price_above_default_client_max_value",
"example": "wrapFetchWithPayment(fetch, account, BigInt(250000)) // atomic units, USDC 6dp",
"required_usdc": "0.25",
"required_atomic": "250000",
"within_your_budget": [
{
"try": "/gauge?signal_id=hydrology.river-level&entity=07010000&format=thin",
"gets": "the same official signal plus its offline-recomputable proof - no three-leg chain, one signal only",
"path": "/gauge",
"usdc": "0.01"
}
],
"default_client_max_atomic": "100000"
},
"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.
0.25USDC≈ $0.25 USD
on Base · exact scheme
Pay 0.25 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
- 250000 smallest units
250000units
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
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
"amount": "250000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"example": {
"loc": "hormuz",
"format": "thin"
},
"queryParams": {
"loc": "required - location id; full list at free /gauge/preview"
},
"exampleRequest": "/gauge/chokepoint-region?loc=hormuz&format=thin"
},
"output": {
"type": "json",
"example": {
"legs": {
"transit": {
"band": null,
"source_ref": "IMF PortWatch Daily_Chokepoints_Data portid=chokepoint6(Strait of Hormuz,2026-08-21)",
"record_hash": "sha256:699bbca83ca77e0570a48c767d25e174e37cf51ceed012b13793f3c485ddc1f6"
},
"sea_state": {
"band": null,
"source_ref": "https://open-meteo.com/en/docs/marine-weather-api",
"record_hash": "sha256:6210ac5c3a486067756bca585c841541397171e0310cd9bae667b8a848563b5b"
},
"congestion": {
"band": "no-coverage",
"source_ref": "https://aisstream.io/documentation",
"record_hash": "sha256:a2a9e86d3147cee9f7ecbeb797ae8717a73f734a04b77af195c0f33874b906cd"
},
"disruption": {
"band": "operable",
"source_ref": "https://open-meteo.com/en/docs/marine-weather-api",
"record_hash": "sha256:5ced2956a016d5b4523e3eff6def79ee891f576ead9c805455c0df6b94df2bef"
}
},
"name": "Strait of Hormuz",
"grade": "screening-level, not decision-grade",
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"verifiability": "unknown",
"monitoring_not_forecast": true,
"intelligence_not_command": true
},
"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": "recent",
"age_hours_now": 135.4,
"freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
}
}
}
},
"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": [
"loc"
],
"properties": {
"loc": {
"type": "string",
"examples": [
"suez-redsea",
"panama-pacific",
"malacca",
"hormuz",
"goodhope",
"channel"
],
"description": "required - location id; full list at free /gauge/preview",
"x-accepted-values": {
"all": "https://api.truthbear.co/schemas/gauge-chokepoint-region.input.json",
"shown": 6,
"total": 12
}
}
},
"additionalProperties": false
}
}
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"const": "json"
},
"example": {}
}
}
}
},
"priceUsd": "$0.25",
"discoverable": true,
"routeTemplate": "/gauge/chokepoint-region",
"priceUsdNumber": 0.25,
"outputSchemaRef": "/manifest"
}
}Provenance
- Seen in the source catalog
- 2026-09-07 08:52Z
- Last indexed by Roundhouse
- 2026-09-25 12:50Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 22:15Z
- x402 version
- 2
- 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
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/chokepoint-region, 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.