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Delx Commerce — Allow-Header Normalize
x402
Delx Commerce — Allow-Header Normalize 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).
Parses and normalizes an HTTP Allow header string into a canonical list of HTTP methods
Price / call$0.001
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 containing: a normalized string of HTTP methods (comma-space separated, uppercase), an array of individual method strings, the input SHA-256 hash for verifiability, a status of 'pass', confirmation that no input was retained and no external calls were made, and the operation identifier 'web_reliability:allow_header_normalize'.
Example use cases
Normalize API gateway Allow header
“I'm inspecting the response from a third-party API and the Allow header came back as 'get,post, OPTIONS,PUT' — can you clean that up into a proper normalized list of HTTP methods?”
Validate allowed methods before routing
“Before I route this request, I need to know what HTTP methods are actually allowed — the raw header is 'POST, GET,DELETE, options'. Can you parse and normalize that for me?”
Canonicalize Allow header in proxy middleware
“My proxy is receiving an Allow header that looks like 'get, POST,OPTIONS' with inconsistent casing and spacing — can you normalize it into the standard format so I can compare it reliably?”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/allow-header-normalize?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-use, verifiable utility to normalize HTTP Allow headers without setting up infrastructure or accounts. Ideal for AI agents that occasionally need to canonicalize HTTP method lists, prefer cryptographic proof of processing (SHA-256 input hash, no-retention guarantee), and want to pay micro-amounts in USDC rather than commit to a subscription.
Side effects
- Header string exceeds 8192 character limit — request rejected
- Malformed or unparseable header value — may return error or empty methods list
- Payment failure via x402 — 402 response with payment details
- Network timeout before processing completes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| header | string | Header supplied to Allow Header Normalize; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"methods": [
"GET",
"OPTIONS",
"POST"
],
"normalized": "GET, OPTIONS, POST"
},
"schema": "delx/util-allow-header-normalize/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "0ecd36e96bbca98170b9eedc601e2bf858ebd547ce42de08db555b94ebabf822",
"external_calls": 0
},
"operation": "web_reliability:allow_header_normalize"
}
}Tags
x402
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