{"uid":"cap_i2bhOy1Z_YMsrkPjiigvY","slug":"delx-commerce-etag-parse-d5525079","name":"Delx Commerce — ETag Parse","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/etag-parse?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"etag":{"type":"string","maxLength":8192,"description":"Etag supplied to Etag Parse; used only for this bounded calculation and processed in memory without retention."}}},"responseSchema":{"type":"json","example":{"result":{"weak":true,"opaque_tag":"abc123"},"schema":"delx/util-etag-parse/v1","status":"pass","evidence":{"retained":false,"input_sha256":"3e4f08edcf8a21d5f8264a8e82262d4e0d629313c13c65043d6ea3f9a79fe515","external_calls":0},"operation":"web_reliability:etag_parse"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0LgaQLVfZmA-gh0wB3hES","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Parses an HTTP ETag header value into its structured components (weak flag and opaque tag string), in-memory with no data retention.","exampleAgentPrompt":"Can you parse this ETag header value for me — W/\"abc123\" — and tell me whether it's a weak validator and what the opaque tag portion is?","exampleUseCases":[{"title":"Cache-control logic in an agent","prompt":"I need to check this ETag value I got back from an API response — W/\"d4f9a\" — is it a weak or strong validator, and what's the opaque tag? My agent needs to decide how to handle conditional requests."},{"title":"Debugging HTTP caching behavior","prompt":"We're seeing inconsistent caching in our pipeline. Can you parse this ETag we received — \"33a64df551425fcc55e4d42a148795d9f25f89d4\" — and break it down into its components so I can figure out what kind of validator it is?"},{"title":"Validating ETag format before storage","prompt":"Before I store this ETag in our cache metadata, can you confirm it's well-formed and tell me its weak/strong status and opaque tag? The value is W/\"xyz-789\"."}],"resultDescription":"Returns a JSON object containing: whether the ETag is a weak validator (boolean), the opaque tag string, operation name, pass/fail status, and evidence metadata including whether input was retained (always false), SHA-256 hash of the input, and the number of external calls made (always 0). All processing is done in-memory with no data retention.","failureModes":["Malformed or missing ETag input may result in a parse error or non-pass status","ETag string exceeding 8192 characters will be rejected","Payment failure via x402 protocol will prevent execution","Network timeouts may occur on the client side"],"whenToPreferThis":"Use this endpoint when you need a lightweight, pay-per-use, no-signup ETag parser with verifiable in-memory-only processing and cryptographic evidence of non-retention. Ideal for agents that handle HTTP cache validation logic and need a trustless, auditable parsing utility without setting up infrastructure. Prefer this over custom parsing when you need the evidence/audit trail (SHA-256 of input, zero external calls confirmed).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:54:07.690Z","isFirstParty":false,"canonicalSlug":"delx-commerce-etag-parse-d5525079"}