a-un
Tool-Call Audit Pro: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.
InferenceLiveeip155:8453Exactvia cdp
AgentsTool-callingEvaluationPrompt-optimizationAudit
Calls · 30d
1
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$1.13
Verified settled volume
48 settlements proven x402 by their on-chain EIP-3009 marker.
$0.150
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 2026-10-22 01:55Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xBdae34e121dFf6Da6fbB71208322E8BE0A923512The 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.
{
"error": "Pay 0.15 USDC on Base with x402. No account needed.",
"usage": {
"method": "POST",
"body_example": {
"input": {
"tools": [
{
"name": "lookup_order",
"parameters": {
"type": "object",
"required": [
"order_id"
],
"properties": {
"order_id": {
"type": "string"
}
}
},
"description": "Find an order"
}
],
"system_prompt": "You are the support agent of an online store."
}
},
"content_type": "application/json"
},
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "eip3009"
},
"payTo": "0xBdae34e121dFf6Da6fbB71208322E8BE0A923512",
"amount": "150000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 900
}
],
"resource": {
"url": "https://a-upgradenet.com/x402/tool-call-audit-pro",
"tags": [
"agents",
"tool-calling",
"evaluation",
"prompt-optimization",
"audit"
],
"mimeType": "application/json",
"description": "Tool-Call Audit Pro: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.",
"serviceName": "a-un"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"input": {
"tools": [
{
"name": "lookup_order",
"parameters": {
"type": "object",
"required": [
"order_id"
],
"properties": {
"order_id": {
"type": "string"
}
}
},
"description": "Find an order"
}
],
"system_prompt": "You are the support agent of an online store."
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": "basic",
"report": {
"verdict": "improved",
"baseline": {
"held_out": {
"rate": 0.55,
"total": 11,
"passed": 6
}
},
"improved": {
"held_out": {
"rate": 0.91,
"total": 11,
"passed": 10
}
},
"recommended": {
"tools": [
"..."
],
"system_prompt": "..."
},
"delta_points": 36.4,
"remaining_failures": []
},
"status": "completed"
}
}
},
"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": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"system_prompt",
"tools"
],
"properties": {
"tools": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"description",
"parameters"
],
"properties": {
"name": {
"type": "string"
},
"parameters": {
"type": "object"
},
"description": {
"type": "string"
}
}
},
"maxItems": 12,
"minItems": 1,
"description": "OpenAI function-calling tools: {name, description, parameters (JSON schema)}"
},
"system_prompt": {
"type": "string",
"description": "The agent's system prompt (max 8000 chars). Never include secrets."
}
}
},
"language": {
"enum": [
"en",
"es"
],
"type": "string"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"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.
0.15USDC≈ $0.15 USD
on Base · exact scheme
Pay 0.15 USDC on Base to 0xBdae…23512. The signed payment is good for 15 minutes.
- Paid to
- 0xBdae…23512
- USD Coin contract
- 0x8335…02913
- Payment window
- 15 minutes
- As published
- 150000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"assetTransferMethod": "eip3009"
},
"payTo": "0xBdae34e121dFf6Da6fbB71208322E8BE0A923512",
"amount": "150000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 900
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"input": {
"tools": [
{
"name": "lookup_order",
"parameters": {
"type": "object",
"required": [
"order_id"
],
"properties": {
"order_id": {
"type": "string"
}
}
},
"description": "Find an order"
}
],
"system_prompt": "You are the support agent of an online store."
}
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"tier": "basic",
"report": {
"verdict": "improved",
"baseline": {
"held_out": {
"rate": 0.55,
"total": 11,
"passed": 6
}
},
"improved": {
"held_out": {
"rate": 0.91,
"total": 11,
"passed": 10
}
},
"recommended": {
"tools": [
"..."
],
"system_prompt": "..."
},
"delta_points": 36.4,
"remaining_failures": []
},
"status": "completed"
}
}
},
"schema": {
"type": "object",
"$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": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"system_prompt",
"tools"
],
"properties": {
"tools": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"parameters"
],
"properties": {
"name": {
"type": "string"
},
"parameters": {
"type": "object"
},
"description": {
"type": "string"
}
}
},
"maxItems": 12,
"minItems": 1,
"description": "OpenAI function-calling tools: {name, description, parameters (JSON schema)}"
},
"system_prompt": {
"type": "string",
"description": "The agent's system prompt (max 8000 chars). Never include secrets."
}
}
},
"language": {
"enum": [
"en",
"es"
],
"type": "string"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-22 01:55Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-22 11:46Z
- x402 version
- 2
- Max timeout
- 900s
- 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. 7 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 a-un 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=a-un' 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://a-upgradenet.com/x402/tool-call-audit-pro, 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.