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Delx HTTP Retry Plan
x402
Delx HTTP Retry Plan is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).
Evaluates an HTTP status code and request method to return a machine-readable, idempotency-aware retry policy indicating whether a failed request is safe to retry.
Price / call$0.002
Success—
StatusUnknown
How this service works
Decide whether an HTTP failure is safe to retry and return an idempotency-aware policy. Use it before an autonomous workflow acts on untrusted input, changes an API, retries a request, or evaluates production reliability. Returns bounded machine-readable JSON for $0.002 USDC via x402 on Base. Execution is deterministic, first-party, local-only, stateless, and does not call an upstream provider; structured validation failures are not billed.
Output
A machine-readable JSON object describing whether the given HTTP method and status code combination is safe to retry, the inferred or overridden idempotency status, and a bounded retry policy recommendation. No upstream calls are made; the result is deterministic and stateless. Structured validation failures are not billed.
Example use cases
Autonomous workflow retry gate
“Before my agent retries that API call, check whether a 429 response to a GET request is safe to retry.”
Idempotent override for stable-key POST
“I have a POST request with a stable idempotency key that just failed with a 500 — treat it as idempotent and tell me if I should retry.”
Production reliability preflight
“We're seeing 502 errors on our DELETE endpoint in production — run a retry plan check so I know if auto-retrying those is safe.”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/http-retry-planWhen to prefer
Choose this endpoint when an autonomous agent or workflow needs a deterministic, policy-driven answer about whether to retry a failed HTTP request — especially in non-idempotent or ambiguous method scenarios (POST, PATCH, DELETE). Prefer it over ad-hoc retry logic when idempotency correctness matters, or when you need a machine-readable policy rather than a hard-coded rule. Its stateless, local-only execution means results are fast, consistent, and side-effect-free.
Side effects
- Invalid status_code outside 100–599 range returns a validation error (not billed)
- Missing or malformed method field may fall back to GET default
- Malformed request body returns a structured validation failure without charge
- Network or gateway errors from the API itself (unrelated to the evaluated request)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| idempotent | boolean | Override inferred method idempotency when the caller has a stable key. |
| status_code | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"method": "GET",
"schema": "delx/http-retry-plan/v1",
"warning": null,
"strategy": "exponential_full_jitter",
"retryable": true,
"idempotent": true,
"status_code": 503,
"max_attempts": 4,
"respect_retry_after": true
}
}Tags
x402
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