API Acre
53 pay-per-call APIs for agents, settled in USDC on Base through x402.
SearchLiveeip155:8453Exactvia cdp
DeveloperResearchCode-reviewStatic-analysisPython
Calls · 30d
1↓ 36%
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.
$0.050
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 13:12Z
—
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.
0.05USDC≈ $0.05 USD
on Base · exact scheme
Pay 0.05 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
- 50000 smallest units
50000units
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": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "GVJJ7rdGiXr5xaYbRwRbjfaJL7fmwRygFi1H6aGqDveb"
},
"payTo": "B4CHWQeQn7GDLZD2aW6hpGG2bEseisBFLZYECA3HDLan",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"after": "def invoice_total(items, discount=0):\n subtotal = sum(...",
"before": "def invoice_total(items):\n return sum(item[\"price\"] fo...",
"filename": "billing.py",
"language": "python"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"data": {
"after": {
"lines": {
"code": 5,
"blank": 0,
"total": 5,
"comments": 0
},
"source": {
"sha256": "f37990278fe5bda7fdae643ec96f54997271ed3992cefdd5f407736c2...",
"utf8Bytes": 194,
"characters": 194
},
"classes": 0,
"functions": 1
},
"before": {
"lines": {
"code": 2,
"blank": 0,
"total": 2,
"comments": 0
},
"source": {
"sha256": "69316f24997a9cbf73019f697f3f2373e39da67d1835885998775037c...",
"utf8Bytes": 74,
"characters": 74
},
"classes": 0,
"functions": 1
},
"changed": true,
"summary": {
"lineDelta": 3,
"classDelta": 0,
"codeLineDelta": 3,
"functionDelta": 0
},
"analysis": {
"method": "two deterministic code-metrics snapshots plus Python func...",
"version": "apiacre-code-change-review/1",
"limitations": [
"Static heuristics do not prove runtime behavior, correctn...",
"Function-level deltas are complete only when both Python ...",
"Renamed functions appear as one removal and one addition."
]
},
"filename": "billing.py",
"findings": [
{
"id": "new-work-markers",
"message": "The change adds TODO, FIXME, HACK, or XXX markers.",
"evidence": {
"added": 1
},
"severity": "low"
}
],
"language": "python",
"execution": {
"codeExecuted": false,
"networkAccessed": false
},
"attentionLevel": "medium",
"attentionScore": 2,
"reviewDecision": "review",
"functionChanges": {
"added": [],
"addedCount": 0,
"changedCount": 1,
"removedCount": 0
}
},
"meta": {
"cached": false,
"sources": [],
"warnings": [],
"duration_ms": 42,
"next_actions": [
{
"title": "Document diff",
"method": "POST",
"reason": "Inspect exact line additions, removals, and a bounded uni...",
"service": "document.diff"
}
]
},
"service": "developer.code-change-review",
"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": [
"before",
"after"
],
"properties": {
"after": {
"type": "string"
},
"before": {
"type": "string"
},
"filename": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
]
},
"language": {
"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",
"required": [
"changed",
"filename",
"language",
"before",
"after",
"summary",
"functionChanges",
"reviewDecision",
"attentionScore",
"attentionLevel",
"findings",
"execution",
"analysis"
],
"properties": {
"after": {
"type": "object"
},
"before": {
"type": "object"
},
"changed": {
"type": "boolean"
},
"summary": {
"type": "object"
},
"analysis": {
"type": "object"
},
"filename": {
"type": [
"string",
"null"
]
},
"findings": {
"type": "array",
"items": {
"type": "object"
}
},
"language": {
"type": "string"
},
"execution": {
"type": "object"
},
"attentionLevel": {
"type": "string"
},
"attentionScore": {
"type": "integer"
},
"reviewDecision": {
"type": "string"
},
"functionChanges": {
"type": "object"
}
},
"additionalProperties": false
},
"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 13:12Z
- Last indexed by Roundhouse
- 2026-09-24 13:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 10:15Z
- 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/developer/code-change-review, 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.