{ "id": "http-link-parse", "name": "HTTP Link Header Parser", "description": "Parse supplied HTTP Link field values with quote-aware commas, escaped quoted parameters, relations and anchor context. Preserves raw URI references/parameters and first-rel semantics; flags unsupported extended parameters. Does not resolve/fetch links, apply anchors, inspect live pagination or certify full RFC8288 conformance.", "category": "protocol-assurance", "priceUsd": "0.005", "pricingStatus": "proposed-unverified", "pricing": { "unit": "one successful operation call", "proposedNominalUsd": "0.005", "sixDecimalTokenBaseUnits": "5000", "subscription": false, "includesPayerWalletOrNetworkFees": false, "liveQuoteVerified": false, "condition": "Actual SDK challenge is authoritative only within the caller's explicit authorization; configured six-decimal token peg is an operator assertion, not a conversion guarantee." }, "intents": [ "Extract pagination next and last relations from supplied HTTP Link headers", "Parse quoted comma parameters and detect anchor-dependent links" ], "whenToUse": [ "Extract pagination next and last relations from supplied HTTP Link headers", "Parse quoted comma parameters and detect anchor-dependent links" ], "whenNotToUse": [ "Following pagination links, URL resolution, link safety or decoding extended title parameters", "Treating an anchored link as if it belonged to the original response context" ], "capabilities": [ "Raw target and anchor preserved with usableWithoutAnchor flag", "Source: https://www.rfc-editor.org/rfc/rfc8288.html" ], "limits": { "inputBytes": 100000, "outputBytes": 400000, "jsonNodes": 12000, "depth": 20, "findings": 150, "findingJsonBytes": 300000, "headerFields": 20, "fieldCharacters": 16000, "links": 200, "parametersPerLink": 50 }, "related": [ "http-headers-normalize", "url-inspect", "openapi-response-check" ], "errorCodes": [ "INPUT_LIMIT", "OUTPUT_LIMIT", "COMPLEXITY_LIMIT", "INVALID_NUMBER", "INVALID_UNICODE", "UNSAFE_KEY", "INVALID_TEMPLATE", "UNSUPPORTED_TEMPLATE", "INVALID_HEADER", "INVALID_ETAG", "INVALID_REPRESENTATION", "OPERATION_NOT_FOUND", "LINE_LIMIT", "EVENT_LIMIT", "LINK_LIMIT" ], "requirementsProfile": { "format": "declared-requirements-v1", "facts": { "execution.suppliedCode": false, "execution.remoteMutation": false, "execution.llmInference": false, "execution.paidMcp": false, "verification.semanticTruth": false, "verification.sourceAuthenticity": false, "verification.liveVulnerabilities": false, "numbers.arbitraryPrecisionJson": false, "numbers.model": "ieee754-binary64", "privacy.requestBodyPersisted": false, "execution.deterministic": true, "execution.networkAccess": false, "privacy.resultBodyPersisted": false, "payment.x402": true, "payment.mpp": true, "operation.id": "http-link-parse", "operation.category": "protocol-assurance", "limit.httpRequestBytes": 131072, "limit.requestBytes": 100000, "limit.responseBytes": 524288, "limit.resultBytes": 400000, "limit.jsonDepth": 20, "limit.jsonNodes": 12000, "standards.fullConformance": false, "http.linkProfile": "raw-framing-relations-anchor", "http.linkResolution": false, "http.extendedParameterDecoding": false, "input.headerValues.maxItems": 20 }, "unknownPolicy": "Undeclared requirements are unknown, never compatible. Matching declared facts does not establish semantic fit or input validity.", "preflight": "/preflight" }, "documentation": "/reference/tools/http-link-parse.md", "serviceContract": "/reference/services/http-link-parse.json", "errors": [ { "status": 400, "meaning": "Malformed JSON, missing/invalid idempotency key, or payment identifier mismatch", "retry": "Correct the request before payment" }, { "status": 402, "meaning": "Payment challenge or rejected payment", "retry": "Use official protocol SDK; inspect payment outcome before another payment" }, { "status": 409, "meaning": "Idempotency conflict, duplicate proof, or PAYMENT_UNCERTAIN", "retry": "Keep original key, body, and proof; reconcile uncertainty with operator; never blindly repay" }, { "status": 413, "meaning": "Input or generated output too large", "retry": "Reduce input; no payment attempted for validation failure" }, { "status": 415, "meaning": "Unsupported media type or compression", "retry": "Send uncompressed application/json" }, { "status": 422, "meaning": "Schema or service-specific semantic validation failure", "retry": "Correct input using returned error code; no payment attempted" }, { "status": 429, "meaning": "Request/payment-attempt rate exceeded", "retry": "Wait for rate limit window; preserve existing payment identity" }, { "status": 503, "meaning": "Payment configuration/provider/state unavailable, or live DNS preparation failed before settlement", "retry": "Check readiness; DNS preparation failures may retry the identical key/body/credential only; uncertainty requires reconciliation" } ], "numericPrecision": "JavaScript IEEE-754 numbers; use strings for large integer IDs/exact decimals where the schema accepts strings. No lossless numeric parsing.", "paymentWorkflow": { "discoveryOnly": false, "supportedProtocols": [ "x402", "mpp" ], "x402": { "credentialHeader": "PAYMENT-SIGNATURE", "challengeHeader": "PAYMENT-REQUIRED", "receiptHeader": "PAYMENT-RESPONSE", "version": 2, "scheme": "exact", "paymentIdentifier": "payment-identifier extension MUST equal the HTTP Idempotency-Key", "sdk": "@x402/core with @x402/evm" }, "mpp": { "supported": true, "credentialHeader": "Authorization", "challengeHeader": "WWW-Authenticate", "receiptHeader": "Payment-Receipt", "method": "tempo", "intent": "charge", "sdk": "mppx", "tokenDecimals": 6 }, "steps": [ "Check configured readiness and the exact service schema", "Generate a fresh random Idempotency-Key for this operation; never use a discovery probe fixture for purchases", "Send valid input without a credential to obtain the official protocol challenge", "Use the official SDK and authorized wallet to fulfill the challenge", "Retry only with identical key, body, protocol and credential", "On PAYMENT_UNCERTAIN stop and request operator reconciliation; never blindly pay again" ], "versionedRetries": "Request fingerprint includes service release version. Retries across a version upgrade can conflict; coordinate upgrades outside the 24-hour replay window and reconcile pending attempts.", "docs": "/llms.txt" }, "method": "POST", "paths": { "x402": "/v1/x402/http-link-parse", "mpp": "/v1/mpp/http-link-parse" }, "inputSchema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "headerValues": { "maxItems": 20, "type": "array", "items": { "type": "string", "maxLength": 16000 } } }, "required": [ "headerValues" ], "additionalProperties": false }, "outputSchema": { "type": "object", "required": [ "operation", "version", "result", "provenance" ], "properties": { "operation": { "const": "http-link-parse", "type": "string" }, "version": { "const": "0.29.0", "type": "string" }, "result": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "profile": { "type": "string", "const": "http-link-framing-subset-v1" }, "links": { "maxItems": 200, "type": "array", "items": { "type": "object", "properties": { "target": { "type": "string" }, "relations": { "type": "array", "items": { "type": "string" } }, "anchor": { "type": [ "string", "null" ] }, "usableWithoutAnchor": { "type": "boolean" }, "parameters": { "type": "array", "items": { "type": "object", "properties": { "name": { "type": "string" }, "value": { "type": [ "string", "null" ] } }, "required": [ "name", "value" ], "additionalProperties": false } } }, "required": [ "target", "relations", "anchor", "usableWithoutAnchor", "parameters" ], "additionalProperties": false } }, "supported": { "type": "boolean" }, "valid": { "type": [ "boolean", "null" ] }, "findings": { "maxItems": 150, "type": "array", "items": { "type": "object", "properties": { "code": { "type": "string" }, "severity": { "type": "string", "enum": [ "error", "warning", "unsupported" ] }, "path": { "type": "string" }, "message": { "type": "string" } }, "required": [ "code", "severity", "path", "message" ], "additionalProperties": false } }, "findingCount": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 }, "truncated": { "type": "boolean" } }, "required": [ "profile", "links", "supported", "valid", "findings", "findingCount", "truncated" ], "additionalProperties": false }, "provenance": { "type": "object", "required": [ "inputSha256", "outputSha256", "deterministic", "externalRequests" ], "properties": { "inputSha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" }, "outputSha256": { "type": "string", "pattern": "^[a-f0-9]{64}$" }, "deterministic": { "const": true }, "externalRequests": { "const": 0 } } } }, "additionalProperties": false }, "exampleInput": { "headerValues": [ "; rel=\"next\"; title=\"More, items\", ; rel=\"last\"" ] }, "exampleResponse": { "operation": "http-link-parse", "version": "0.29.0", "result": { "profile": "http-link-framing-subset-v1", "links": [ { "target": "/items?page=2", "relations": [ "next" ], "anchor": null, "usableWithoutAnchor": true, "parameters": [ { "name": "rel", "value": "next" }, { "name": "title", "value": "More, items" } ] }, { "target": "/items?page=5", "relations": [ "last" ], "anchor": null, "usableWithoutAnchor": true, "parameters": [ { "name": "rel", "value": "last" } ] } ], "supported": true, "valid": true, "findings": [], "findingCount": 0, "truncated": false }, "provenance": { "inputSha256": "936f87f1083a7b82908769f15bbc84a30bcf31f5740b62694bb1b5048d718db6", "outputSha256": "fb895fa83b3582836a18817d4a453dd54e0907b079388c204ad7d5fe27ed7b17", "deterministic": true, "externalRequests": 0 } }, "requiredHeaders": { "Content-Type": "application/json", "Idempotency-Key": "random 16–128 character operation identifier" }, "fixedExample": "/reference/examples/http-link-parse.json", "execution": { "deterministic": true, "externalRequests": 0, "maxExternalRequests": 0, "resultSnapshotPersisted": false, "fixedExampleIsIllustrativeSnapshot": false, "requiresPayment": true, "supportsMcpExecution": false }, "releaseSnapshot": { "format": "static-release-reference-v1", "sourceVersion": "0.29.0", "sourceRegistrySha256": "a2b5ec09bf6c38b9d2879d746a4fded374f5928b445377b0270ef6aa8e6cac65", "generatedAt": "2026-10-06T15:38:00Z", "releaseAcceptance": "not-verified-by-generator", "runtimeReadiness": "not-evaluated", "livePaymentsVerified": false, "indexingVerified": false, "apiOrigin": null, "notice": "Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment." } }