All workflows

Tool Output Quality Gate

Reject structurally incomplete, stale or schema-invalid tool output before it contaminates the next autonomous step.

1 credit per call · $0.01 USDC with x402

Sample input

{
  "value": {
    "id": "abc",
    "price": 25,
    "status": "ok"
  },
  "schema": {
    "type": "object",
    "required": [
      "id",
      "price"
    ],
    "properties": {
      "id": {
        "type": "string"
      },
      "price": {
        "type": "number"
      }
    }
  },
  "required_paths": [
    "/id",
    "/price"
  ],
  "max_empty_ratio": 0.2,
  "observed_at": "2026-09-30T12:00:00Z",
  "max_age_seconds": 86400
}

Worked sample output

{
  "ok": true,
  "mode": "tool_output_quality_gate",
  "decision": "accept",
  "issues": [],
  "required_paths": [
    "/id",
    "/price"
  ],
  "missing_paths": [],
  "validation": {
    "valid": true,
    "error_count": 0,
    "errors": [],
    "errors_truncated": false
  },
  "leaf_stats": {
    "leaves": 3,
    "empty": 0,
    "empty_ratio": 0
  },
  "freshness": {
    "status": "fresh",
    "age_seconds": 26279,
    "max_age_seconds": 86400
  },
  "value_sha256": "160aba927402189461c7e3537f7d025926e02e60fb2aa04e926bba246540bfb8",
  "limitations": [
    "Quality checks structural completeness, declared freshness and schema conformance. It does not verify factual correctness."
  ]
}

Worked example using published sample data only. Own-data execution is paid.

Connect in curl

Set BOUNTY_API_KEY privately after your payment is verified. Change the retry key for each new logical request.

curl 'https://bounty-engineer-x402-prod.onrender.com/v1/prepaid/tool-output-quality-gate' \
  -H "Authorization: Bearer $BOUNTY_API_KEY" \
  -H 'Content-Type: application/json' \
  -H 'Idempotency-Key: workflow-request-001' \
  -H 'X-Max-Credits: 1' \
  --data '{"value":{"id":"abc","price":25,"status":"ok"},"schema":{"type":"object","required":["id","price"],"properties":{"id":{"type":"string"},"price":{"type":"number"}}},"required_paths":["/id","/price"],"max_empty_ratio":0.2,"observed_at":"2026-09-30T12:00:00Z","max_age_seconds":86400}'

Connect in n8n

Download the inactive n8n template. Import it, configure the private Header Auth credential, inspect the sample and run it manually. A new execution creates a new billable request; there is no automatic schedule.

Use an HTTP POST to https://bounty-engineer-x402-prod.onrender.com/v1/prepaid/tool-output-quality-gate. Send JSON and these headers; store the Bearer token as a private credential.

{
  "method": "POST",
  "headers": {
    "Authorization": "Bearer YOUR_PRIVATE_API_KEY",
    "Content-Type": "application/json",
    "Idempotency-Key": "UNIQUE_PER_LOGICAL_REQUEST",
    "X-Max-Credits": "1"
  },
  "body": {
    "value": {
      "id": "abc",
      "price": 25,
      "status": "ok"
    },
    "schema": {
      "type": "object",
      "required": [
        "id",
        "price"
      ],
      "properties": {
        "id": {
          "type": "string"
        },
        "price": {
          "type": "number"
        }
      }
    },
    "required_paths": [
      "/id",
      "/price"
    ],
    "max_empty_ratio": 0.2,
    "observed_at": "2026-09-30T12:00:00Z",
    "max_age_seconds": 86400
  }
}

Reuse a retry key only for the same input. Failed execution returns reserved credits. Full integration and recovery guide · Machine-readable recipe