Check an ACP offering's published contract before you buy
Check an ACP offering's published contract before you buy. Detects listings that declare no JSON deliverable schema, name required fields they never declare, or specify no input schema at all — the defects that make a purchase unverifiable after the fact. Reads the public listing only; nothing is purchased or executed. Deterministic, no model judgment. A PASS means the listing is machine-checkable — it is not a correctness guarantee and says nothing about output quality.
10000 (raw units)
price
1
calls / 30d
1
unique payers
2026-09-06
updated
Provider
app.tenna.ai · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x7eaf3c393a8996e124c0fa7ccbc55019854c4c5b",
"asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"amount": "10000",
"maxTimeoutSeconds": 60
}
]Output schema
{
"bazaar": {
"discoverable": true,
"info": {
"input": {
"body": {
"offering": "acp_offering_contract_lint",
"offeringContract": {}
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"buyerReadable": true,
"dataState": "<dataState>",
"findings": [
{}
],
"grade": "<grade>",
"limitations": [
"<limitations>"
],
"offering": "acp_offering_contract_lint",
"provenance": {
"auditedDeliverableHash": null,
"generatedAt": 1,
"ledgerLaunchCount": null,
"ledgerSpanHours": null,
"resultHash": null,
"rubricVersion": null,
"source": "<source>"
},
"schemaVersion": "<schemaVersion>",
"severityCounts": {}
},
"type": "json"
}
},
"resource": "https://app.tenna.ai/api/x402/verifier/acp_offering_contract_lint",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"description": "The seller's published offering object.",
"properties": {
"offering": {
"const": "acp_offering_contract_lint",
"description": "Offering identifier. Must be exactly 'acp_offering_contract_lint'.",
"type": "string"
},
"offeringContract": {
"description": "Published offering object with its requirements and deliverable schemas.",
"type": "object"
}
},
"required": [
"offering",
"offeringContract"
],
"type": "object"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"additionalProperties": true,
"properties": {
"buyerReadable": {
"description": "Whether a buyer can verify conformance mechanically.",
"type": "boolean"
},
"dataState": {
"description": "COMPLETE.",
"type": "string"
},
"findings": {
"description": "Contract defects, each with an evidencePath.",
"items": {
"type": "object"
},
"type": "array"
},
"grade": {
"description": "PASS, WARN or FAIL.",
"type": "string"
},
"limitations": {
"description": "Coverage limits and missing data, always disclosed.",
"items": {
"type": "string"
},
"type": "array"
},
"offering": {
"const": "acp_offering_contract_lint",
"description": "Offering that produced this result.",
"type": "string"
},
"provenance": {
"description": "Reproducibility metadata so another agent can audit this.",
"properties": {
"auditedDeliverableHash": {
"description": "Explicit alias for resultHash on deliverable-audit results; hashes the buyer-supplied input, not the audit envelope.",
"type": [
"string",
"null"
]
},
"generatedAt": {
"description": "Unix seconds.",
"type": "integer"
},
"ledgerLaunchCount": {
"description": "Launches in the ledger. Null when the offering is not derived from the launch ledger — this means not applicable, not collection failure.",
"type": [
"integer",
"null"
]
},
"ledgerSpanHours": {
"description": "Hours of history covered. Null when the offering is not derived from the launch ledger.",
"type": [
"number",
"null"
]
},
"resultHash": {
"description": "Hash of the audited input, so the same verdict can be reproduced. Present on audit offerings.",
"type": [
"string",
"null"
]
},
"rubricVersion": {
"description": "Rubric the verdict was produced under. Present on audit offerings.",
"type": [
"string",
"null"
]
},
"source": {
"description": "Data origin.",
"type": "string"
}
},
"type": "object"
},
"schemaVersion": {
"description": "Deliverable contract version.",
"type": "string"
},
"severityCounts": {
"description": "Finding counts by severity.",
"type": "object"
}
},
"required": [
"schemaVersion",
"offering",
"provenance",
"limitations",
"dataState",
"grade",
"severityCounts",
"findings",
"buyerReadable"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://app.tenna.ai/api/x402/verifier/acp_offering_contract_lint" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://app.tenna.ai/api/x402/verifier/acp_offering_contract_lint");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://app.tenna.ai/api/x402/verifier/acp_offering_contract_lint")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/5512.json, and this resource appears in /discovery/resources and /discovery/search.