Delx Commerce — Retry-Safe Classify

x402

Delx Commerce — Retry-Safe Classify is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Classifies whether an HTTP request is safe to retry based on method, status code, mutation behavior, and idempotency key presence

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

Output

Returns a JSON object with retry_safe (boolean), advice (e.g. 'retry_with_backoff'), reason (e.g. 'transient_status_with_idempotency_key'), the echoed method and status_code, and a schema identifier string for traceability.

Example use cases

Agent retry decision after transient failure

“My agent just made a POST request to charge a user and got back a 503. The request body mutates state and I included an idempotency key — can I safely retry it, and what's the recommended approach?”

Safe retry check for read-modify-write operation

“I have a PUT request that failed with a 500, and it does modify the request body. There's no idempotency key. Should I retry this or is it too risky?”

Idempotency-aware retry classification in workflow

“In my automated pipeline a GET request returned a 429. The body doesn't mutate. Is it safe to retry this, and what retry strategy do you recommend?”

Technical details

Endpoint

POSThttps://commerce.delx.ai/api/v1/x402/retry-safe-classify?utm_source=zero.xyz

When to prefer

Choose this endpoint when an AI agent needs a principled, rule-based decision about HTTP retry safety at runtime — especially when dealing with potentially mutating requests, uncertain idempotency guarantees, or transient error codes. It is particularly useful in agentic workflows where unintended duplicate side effects (e.g. duplicate payments or writes) must be avoided. Prefer it over hardcoded retry logic when the HTTP method, status code, and idempotency posture vary dynamically across different API calls in the workflow.

Side effects

Missing required fields (method or status_code) may result in a 400 or malformed classification
Invalid status_code values outside standard HTTP range may produce unexpected classifications
Payment failure via x402 protocol results in 402 response before any classification occurs
Network timeout on the Delx endpoint itself may require a retry of the classify call

Input

Schema · Request body

Field	Type	Description
method	string	Input field: method.
status_code	integer	Input field: status code.
body_mutates	boolean	Input field: body mutates.
idempotency_key_present	boolean	Input field: idempotency key present.

Output

Schema · Response

{
  "type": "json",
  "example": {
    "advice": "retry_with_backoff",
    "method": "POST",
    "reason": "transient_status_with_idempotency_key",
    "schema": "delx/util-retry-safe-classify/v1",
    "retry_safe": true,
    "status_code": 503
  }
}

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