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Connection Header Tokenize
x402
Connection Header Tokenize is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Normalizes and tokenizes hop-by-hop connection option tokens from a raw HTTP Connection header, returning a deterministic pass/advisory status with normalized evidence.
Price / call$0.001
Success—
StatusUnknown
How this service works
Connection Header Tokenize: Connection Header Tokenize normalizes hop-by-hop connection option tokens from bounded caller-supplied values without an external provider. Call Connection Header Tokenize before accepting, caching, redirecting, or retrying a caller-supplied web response. Returns normalized web evidence, the computed finding, and an explicit pass or advisory status for Connection Header Tokenize as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, statel…
Output
Returns versioned deterministic JSON containing the normalized list of hop-by-hop connection option tokens extracted from the input header, the computed finding describing what was detected, and an explicit pass or advisory status indicating whether the header is safe for the intended operation (accept, cache, redirect, or retry).
Example use cases
Validate header before caching response
“Before I cache this upstream web response, can you run this Connection header through normalization and tell me if it's safe to cache? The header value is 'close, Transfer-Encoding'.”
Check Connection header before redirect
“I'm about to follow a redirect but the caller supplied a Connection header of 'keep-alive, Proxy-Authenticate' — can you tokenize it and let me know if there are any advisory flags?”
Normalize header for proxy retry logic
“My retry handler received a response with Connection header 'keep-alive, TE, trailers' — can you normalize and tokenize that for me and tell me if it passes?”
Technical details
Endpoint
POSThttps://api.delx.ai/api/v1/x402/connection-header-tokenizeWhen to prefer
Choose this endpoint when you need a deterministic, stateless, first-party normalization of HTTP Connection header tokens without relying on an external provider. Ideal for agents that must validate hop-by-hop headers before caching, redirecting, accepting, or retrying caller-supplied web responses, especially when reproducibility and auditability of the result matter.
Side effects
- Header string exceeds 8192 character limit — input rejected
- Malformed or unparseable header value — may return advisory status with finding detail
- Payment not received or insufficient — x402 payment error
- Empty header input — may return trivially passing result or error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| header | string | Header supplied to Connection Header Tokenize; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"tokens": [
"keep-alive",
"upgrade"
],
"normalized": "keep-alive, upgrade"
},
"schema": "delx/util-connection-header-tokenize/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "99b08b769289cbe264239a5044acfa6f6dcef329041f1f176821a5c475eb798f",
"external_calls": 0
},
"operation": "web_reliability:connection_header_tokenize"
}
}Tags
x402
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