x402-intelligence · beta · free

Worked-Once Recipe Vault

Retrieve a known-good, versioned x402 integration recipe with its exact environment and verification evidence. Unknown recipe keys return free NOT_COVERED before payment.

Use when

An agent needs a versioned integration recipe observed to work once.
A minimal host-specific compatibility example can unblock testing.

Do not use when

The requested host or version is outside the published dataset.
A recipe would be treated as a permanent compatibility guarantee.

Invocation contract

HTTP: /v1/tools/worked-once-recipe-vault
Version: 0.1.0
Mode: lookup
Idempotency: not required
Retention: The submitted recipe key is normalized in memory. Raw input is not retained; execution controls retain a request hash.
Tested with: x402 v2, Base Sepolia, MCP Streamable HTTP

Positive and negative examples

{
  "input": {
    "recipe_key": "typescript-fetch-base-sepolia-exact-v2"
  },
  "output": {
    "recipe_key": "typescript-fetch-base-sepolia-exact-v2",
    "environment": {
      "runtime": "Node.js 24",
      "network": "eip155:84532"
    },
    "steps": [
      "Register ExactEvmScheme, then wrap fetch."
    ],
    "verified_properties": [
      "An identical replay produced no second transfer."
    ],
    "sample_count": 1,
    "observed_at": "2026-07-24T00:00:00.000Z",
    "evidence_urls": [
      "https://sepolia.basescan.org/tx/0x5d299e53db4ec99415653556cdb8e6b5bc1492078dcacee3a031c0f6fee88f01"
    ]
  },
  "negative": [
    {
      "scenario": "The requested host or version is outside the published dataset.",
      "expected_error": "NOT_COVERED",
      "charged": false
    }
  ]
}

Deterministic errors

Code	Retry	Charged	Recovery
INVALID_INPUT	false	false	Correct the request to match input_schema.
NOT_COVERED	false	false	Check dataset scope or submit a capability request.
TOOL_PAUSED	true	false	Wait for the operator to resume the tool.
RATE_LIMITED	true	false	Retry after the response Retry-After interval.
DEPENDENCY_UNAVAILABLE	true	false	Retry with the same idempotency identity.

Full machine manifest

The HTTP, OpenAPI, MCP, llms.txt, and ARD descriptions are generated from this same registry record.

Open JSON manifest →