Tinkrr API
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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.
{
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc3d6162d20Cdc2f17A62eA6E81B248758d6c4f0C",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://tinkrr-api.tinkrr.workers.dev/btc/fees",
"tags": [
"bitcoin",
"video",
"intelligence",
"crypto",
"analytics"
],
"mimeType": "application/json",
"description": "Real-time Bitcoin fee forecast: next-block, 30-min, 1-hr with congestion tier",
"serviceName": "Tinkrr API"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {
"estimates": {
"oneHour": {
"low": 3,
"mid": 4,
"high": 5
},
"nextBlock": {
"low": 5,
"mid": 6,
"high": 7
},
"thirtyMin": {
"low": 4,
"mid": 5,
"high": 6
}
},
"congestion": "low",
"exampleCosts": {
"oneHour_sats": 564,
"p2wpkh_vbytes": 141,
"nextBlock_sats": 846
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"type": "object",
"properties": {
"queryParams": {
"type": "object",
"properties": {}
}
}
},
"output": {
"type": "object",
"properties": {
"schema": {
"type": "object",
"properties": {
"timing": {
"type": "object"
},
"estimates": {
"type": "object"
},
"congestion": {
"enum": [
"low",
"medium",
"high",
"critical"
],
"type": "string"
},
"exampleCosts": {
"type": "object"
}
}
},
"example": {
"estimates": {
"oneHour": {
"low": 3,
"mid": 4,
"high": 5
},
"nextBlock": {
"low": 5,
"mid": 6,
"high": 7
},
"thirtyMin": {
"low": 4,
"mid": 5,
"high": 6
}
},
"congestion": "low",
"exampleCosts": {
"oneHour_sats": 564,
"p2wpkh_vbytes": 141,
"nextBlock_sats": 846
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.005 USDC on Base to 0xc3d6…c4f0C. The signed payment is good for 5 minutes.
- Paid to
- 0xc3d6…c4f0C
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xc3d6162d20Cdc2f17A62eA6E81B248758d6c4f0C",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {
"estimates": {
"oneHour": {
"low": 3,
"mid": 4,
"high": 5
},
"nextBlock": {
"low": 5,
"mid": 6,
"high": 7
},
"thirtyMin": {
"low": 4,
"mid": 5,
"high": 6
}
},
"congestion": "low",
"exampleCosts": {
"oneHour_sats": 564,
"p2wpkh_vbytes": 141,
"nextBlock_sats": 846
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"timing": {
"type": "object"
},
"estimates": {
"type": "object"
},
"congestion": {
"enum": [
"low",
"medium",
"high",
"critical"
],
"type": "string"
},
"exampleCosts": {
"type": "object"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-06-16 11:51Z
- Last indexed by Roundhouse
- 2026-07-09 13:30Z
- Last enriched (probe, favicon, geo)
- 2026-09-14 06:15Z
- 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
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 Tinkrr API 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=Tinkrr%20API' 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://tinkrr-api.tinkrr.workers.dev/btc/fees, 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.