API Acre
47 pay-per-call APIs for agents, settled in USDC on Base through x402.
DataLiveeip155:8453Exactvia cdp
CryptoEvmBaseEthereumContract
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$37.15
Verified settled volume
300 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.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-01 12:52Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xa0BFa4f07281c9b248DC3AED2217836BcA24869BThe 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.
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 0xa0BF…4869B. The signed payment is good for 5 minutes.
- Paid to
- 0xa0BF…4869B
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 5000 smallest units
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
- B4CHWQ…HDLan
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xa0BFa4f07281c9b248DC3AED2217836BcA24869B",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "B4CHWQeQn7GDLZD2aW6hpGG2bEseisBFLZYECA3HDLan",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"block_tag": "safe"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"data": {
"code": {
"sha256": "98d785fcb1bf847f287adc2310759fd94cc13e754b974bc72131382e8266f607",
"sizeBytes": 1852
},
"block": {
"hash": "0x84d697381027abac69728893f2428050d4600473cc00d7e8b8d4ea6365a3656f",
"number": 49834076,
"timestamp": "2026-08-11T14:11:39+00:00",
"requestedTag": "safe"
},
"found": true,
"source": "https://docs.base.org/base-chain/quickstart/connecting-to-base",
"network": "eip155:8453",
"contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"readOnly": true,
"warnings": [
"ERC-165 interface support was unavailable or non-standard",
"ERC-721 interface support was unavailable or non-standard",
"ERC-1155 interface support was unavailable or non-standard"
],
"disclaimer": "Point-in-time public Base state only. Token methods are optional and untruste...",
"interfaces": [
{
"standard": "ERC-165",
"supported": null,
"interfaceId": "0x01ffc9a7"
}
],
"explorerUrl": "https://basescan.org/address/0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"tokenMetadata": {
"name": "USD Coin",
"status": "complete",
"symbol": "USDC",
"decimals": 6,
"totalSupplyAtomic": "4194970321976430"
},
"standardSources": {
"ERC-20": "https://eips.ethereum.org/EIPS/eip-20",
"ERC-165": "https://eips.ethereum.org/EIPS/eip-165",
"ERC-721": "https://eips.ethereum.org/EIPS/eip-721",
"ERC-1155": "https://eips.ethereum.org/EIPS/eip-1155"
},
"networkRequestsMade": 2,
"transactionBroadcast": false
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": []
},
"service": "crypto.base-contract-inspect",
"version": "1",
"request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"contract"
],
"properties": {
"contract": {
"type": "string"
},
"block_tag": {
"enum": [
"latest",
"safe",
"finalized"
],
"type": "string"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"request_id",
"service",
"version",
"data",
"meta"
],
"properties": {
"data": {
"type": "object",
"properties": {
"code": {
"type": "object"
},
"block": {
"type": "object"
},
"found": {
"type": "boolean"
},
"source": {
"type": "string"
},
"network": {
"type": "string"
},
"contract": {
"type": "string"
},
"readOnly": {
"type": "boolean"
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"disclaimer": {
"type": "string"
},
"interfaces": {
"type": "array",
"items": {
"type": "object"
}
},
"explorerUrl": {
"type": "string"
},
"tokenMetadata": {
"type": "object"
},
"standardSources": {
"type": "object"
},
"networkRequestsMade": {
"type": "integer"
},
"transactionBroadcast": {
"type": "boolean"
}
}
},
"meta": {
"type": "object",
"required": [
"duration_ms",
"cached",
"sources",
"warnings",
"next_actions"
],
"properties": {
"cached": {
"type": "boolean"
},
"sources": {
"type": "array",
"items": {
"type": "string"
}
},
"warnings": {
"type": "array",
"items": {
"type": "string"
}
},
"duration_ms": {
"type": "integer"
},
"next_actions": {
"type": "array",
"items": {
"type": "object"
}
}
}
},
"service": {
"type": "string"
},
"version": {
"type": "string"
},
"request_id": {
"type": "string"
}
}
}
}
}
}
}
},
"payment-identifier": {
"info": {
"required": false
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"required"
],
"properties": {
"id": {
"type": "string",
"pattern": "^[a-zA-Z0-9_-]+$",
"maxLength": 128,
"minLength": 16
},
"required": {
"type": "boolean"
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-01 12:52Z
- Last indexed by Roundhouse
- 2026-09-24 08:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 05:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 405
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 API Acre 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%20Acre' 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://apiacre.com/v1/crypto/base-contract-inspect, 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.