Utilities · x402 · early usage

Audit an ACP deliverable against the schema its seller published

by app.tenna.ai · discovered, not yet claimed by its owner · updated 2026-10-08

30d calls2

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Audit an ACP deliverable against the schema its seller published. Every defect carries a JSON evidence path, so it can be fixed or disputed; findings without a path are not emitted. The grade comes from deterministic checks only and is reproducible. If the seller published no machine-checkable schema, the result says so instead of passing silently. Credential leakage fails closed. Your deliverable is not stored, resold, or used for training. Audit evidence only: not a correctness guarantee.

Tags: agent · deliverable · schema · audit · x402 · bazaar

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-08

Input example from Bazaar metadata

{
  "deliverable": {},
  "offering": "acp_deliverable_audit"
}

Output example

{
  "advisory": [
    {}
  ],
  "auditedOffering": null,
  "checks": [
    {}
  ],
  "checksNote": "<checksNote>",
  "contractChecked": true,
  "dataState": "<dataState>",
  "defects": [
    {}
  ],
  "grade": null,
  "gradeBasis": "<gradeBasis>",
  "gradeReproducible": true,
  "limitations": [
    "<limitations>"
  ],
  "offering": "acp_deliverable_audit",
  "provenance": {
    "auditedDeliverableHash": null,
    "generatedAt": 1,
    "ledgerLaunchCount": null,
    "ledgerSpanHours": null,
    "resultHash": null,
    "rubricVersion": null,
    "source": "<source>"
  },
  "resultHash": null,
  "rubricVersion": "<rubricVersion>",
  "schemaVersion": "<schemaVersion>",
  "semanticLayer": "<semanticLayer>",
  "severityCounts": {}
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/26984.json for the price and payment options.
Pay. Call GET https://app.tenna.ai/api/x402/verifier/acp_deliverable_audit. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.03 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base
Demand: 2 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.03	0x7eaf3c393a8996e124c0fa7ccbc55019854c4c5b	60s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x7eaf3c393a8996e124c0fa7ccbc55019854c4c5b",
    "asset": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
    "amount": "30000",
    "amountUsd": 0.03,
    "maxTimeoutSeconds": 60
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "additionalProperties": true,
      "properties": {
        "advisory": {
          "description": "Model observations. NOT reproducible and excluded from the grade; treat as leads, not defects.",
          "items": {
            "type": "object"
          },
          "type": "array"
        },
        "auditSubject": {
          "description": "Explicitly identifies the buyer-supplied deliverable as the audit subject; the wrapper never grades itself.",
          "type": "string"
        },
        "auditSurface": {
          "description": "Size and top-level field count of the audited input.",
          "type": "object"
        },
        "auditedAt": {
          "description": "Unix seconds when the audit was performed.",
          "type": "integer"
        },
        "auditedDeliverableHash": {
          "description": "Hash of the buyer-supplied deliverable that was audited.",
          "type": "string"
        },
        "auditedOffering": {
          "description": "The offering whose deliverable was audited, as supplied by the buyer. Null if not given.",
          "type": [
            "string",
            "null"
          ]
        },
        "checks": {
          "description": "One row per field the seller declared: path, declared type, observed type, presence and outcome. Shows what the audit actually inspected instead of only its verdict. Empty when the seller published no machine-checkable deliverable schema.",
          "items": {
            "type": "object"
          },
          "type": "array"
        },
        "checksNote": {
          "description": "States the limit of the checks rows: type and presence only, never value correctness.",
          "type": "string"
        },
        "contractChecked": {
          "description": "Whether a machine-checkable seller schema existed.",
          "type": "boolean"
        },
        "dataState": {
          "description": "COMPLETE, PARTIAL or REJECTED.",
          "type": "string"
        },
        "defects": {
          "description": "Confirmed findings, each with an evidencePath.",
          "items": {
            "type": "object"
          },
          "type": "array"
        },
        "grade": {
          "description": "PASS, WARN or FAIL.",
          "type": [
            "string",
            "null"
          ]
        },
        "gradeBasis": {
          "description": "Which layer produced the grade. Always DETERMINISTIC_ONLY.",
          "type": "string"
        },
        "gradeReproducible": {
          "description": "Whether the same input yields the same grade.",
          "type": "boolean"
        },
        "hashNote": {
          "description": "Clarifies that the hash covers the input, not this envelope.",
          "type": "string"
        },
        "independence": {
          "description": "Whether reviewer and generator share a model family.",
          "type": [
            "string",
            "null"
          ]
        },
        "limitations": {
          "description": "Coverage limits and missing data, always disclosed.",
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "offering": {
          "const": "acp_deliverable_audit",
          "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"
        },
        "resultHash": {
          "description": "Backward-compatible alias of auditedDeliverableHash. Null when the input was rejected before anything was hashed.",
          "type": [
            "string",
            "null"
          ]
        },
        "rubricVersion": {
          "description": "Rubric version used.",
          "type": "string"
        },
        "schemaVersion": {
          "description": "Deliverable contract version.",
          "type": "string"
        },
        "semanticLayer": {
          "description": "OK, SKIPPED or the failure state.",
          "type": "string"
        },
        "severityCounts": {
          "description": "Confirmed defect counts by severity. Advisory items are not counted here.",
          "type": "object"
        }
      },
      "required": [
        "schemaVersion",
        "offering",
        "provenance",
        "limitations",
        "dataState",
        "auditedOffering",
        "grade",
        "gradeBasis",
        "gradeReproducible",
        "severityCounts",
        "defects",
        "advisory",
        "contractChecked",
        "semanticLayer",
        "rubricVersion",
        "resultHash",
        "checks",
        "checksNote"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "advisory": [
      {}
    ],
    "auditSubject": "string",
    "auditSurface": {},
    "auditedAt": 0,
    "auditedDeliverableHash": "string",
    "auditedOffering": "string",
    "checks": [
      {}
    ],
    "checksNote": "string",
    "contractChecked": true,
    "dataState": "string",
    "defects": [
      {}
    ],
    "grade": "string",
    "gradeBasis": "string",
    "gradeReproducible": true,
    "hashNote": "string",
    "independence": "string",
    "limitations": [
      "string"
    ],
    "offering": "string",
    "provenance": {
      "auditedDeliverableHash": "string",
      "generatedAt": 0,
      "ledgerLaunchCount": 0,
      "ledgerSpanHours": 0,
      "resultHash": "string",
      "rubricVersion": "string",
      "source": "string"
    },
    "resultHash": "string",
    "rubricVersion": "string",
    "schemaVersion": "string",
    "semanticLayer": "string",
    "severityCounts": {}
  },
  "type": "string"
}

Examples

curl

curl "https://app.tenna.ai/api/x402/verifier/acp_deliverable_audit"
# -> 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_deliverable_audit");
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_deliverable_audit")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: app.tenna.ai
Endpoint: https://app.tenna.ai/api/x402/verifier/acp_deliverable_audit
Machine-readable: /resources/26984.json