{ "id": "evidence-quote-check", "name": "Literal Quote Evidence Check", "description": "Check exact quotations against supplied source text, including optional UTF-16 start offsets. Returns source SHA-256 fingerprints, occurrence counts, bounded offsets and ambiguity/mismatch findings. Unique scans are capped at 4 million characters and 200,000 located occurrences. Establishes literal correspondence only, never truth, entailment, authenticity or source credibility.", "category": "workflow-assurance", "priceUsd": "0.01", "pricingStatus": "proposed-unverified", "pricing": { "unit": "one successful operation call", "proposedNominalUsd": "0.01", "sixDecimalTokenBaseUnits": "10000", "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": [ "Verify agent-generated quotations against supplied source passages", "Locate exact quote offsets and detect ambiguous repeated evidence" ], "whenToUse": [ "Verify agent-generated quotations against supplied source passages", "Locate exact quote offsets and detect ambiguous repeated evidence" ], "whenNotToUse": [ "Fact checking, semantic support, paraphrase matching or source authenticity", "Fetching cited URLs or verifying unseen documents" ], "capabilities": [ "Exact UTF-16 offsets with source UTF-8 SHA-256", "Unique source/literal scans cached; overlapping occurrences counted with a 200,000 aggregate occurrence cap; first 20 locations retained" ], "related": [ "citation-coverage-audit", "context-budget-pack" ], "limits": { "inputBytes": 100000, "outputBytes": 400000, "jsonNodes": 8000, "depth": 20, "findings": 200, "quoteSearchCharacters": 4000000, "quoteOccurrenceEvaluations": 200000, "sources": 100, "quotes": 200, "matchesPerQuote": 20 }, "errorCodes": [ "INPUT_LIMIT", "OUTPUT_LIMIT", "COMPLEXITY_LIMIT", "UNSAFE_KEY", "DUPLICATE_ID", "EDGE_LIMIT", "EVALUATION_LIMIT", "INVALID_UNICODE", "INVALID_RETRY_AFTER", "INVALID_RETRY_INPUT" ], "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": "evidence-quote-check", "operation.category": "workflow-assurance", "limit.httpRequestBytes": 131072, "limit.requestBytes": 100000, "limit.responseBytes": 524288, "limit.resultBytes": 400000, "limit.jsonDepth": 20, "limit.jsonNodes": 8000, "text.exactQuotes": true, "text.offsetUnit": "utf16-code-units", "input.sources.maxItems": 100, "input.quotes.maxItems": 200 }, "unknownPolicy": "Undeclared requirements are unknown, never compatible. Matching declared facts does not establish semantic fit or input validity.", "preflight": "/preflight" }, "documentation": "/reference/tools/evidence-quote-check.md", "serviceContract": "/reference/services/evidence-quote-check.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/evidence-quote-check", "mpp": "/v1/mpp/evidence-quote-check" }, "inputSchema": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "sources": { "maxItems": 100, "type": "array", "items": { "type": "object", "properties": { "id": { "type": "string", "minLength": 1, "maxLength": 80 }, "text": { "type": "string", "maxLength": 90000 } }, "required": [ "id", "text" ], "additionalProperties": false } }, "quotes": { "maxItems": 200, "type": "array", "items": { "type": "object", "properties": { "id": { "type": "string", "minLength": 1, "maxLength": 80 }, "sourceId": { "type": "string", "minLength": 1, "maxLength": 80 }, "text": { "type": "string", "minLength": 1, "maxLength": 10000 }, "start": { "type": "integer", "minimum": 0, "maximum": 90000 } }, "required": [ "id", "sourceId", "text" ], "additionalProperties": false } } }, "required": [ "sources", "quotes" ], "additionalProperties": false }, "outputSchema": { "type": "object", "required": [ "operation", "version", "result", "provenance" ], "properties": { "operation": { "const": "evidence-quote-check", "type": "string" }, "version": { "const": "0.29.0", "type": "string" }, "result": { "$schema": "https://json-schema.org/draft/2020-12/schema", "type": "object", "properties": { "profile": { "type": "string", "const": "literal-quote-v1" }, "allVerified": { "type": "boolean" }, "verifiesTruth": { "type": "boolean", "const": false }, "offsetUnit": { "type": "string", "const": "UTF-16-code-units" }, "sources": { "type": "array", "items": { "type": "object", "properties": { "id": { "type": "string" }, "length": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 }, "sha256Utf8": { "type": "string" } }, "required": [ "id", "length", "sha256Utf8" ], "additionalProperties": false } }, "quotes": { "type": "array", "items": { "type": "object", "properties": { "id": { "type": "string" }, "sourceId": { "type": "string" }, "status": { "type": "string", "enum": [ "verified", "ambiguous", "not_found", "location_mismatch", "source_missing" ] }, "occurrenceCount": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 }, "matches": { "type": "array", "items": { "type": "object", "properties": { "start": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 }, "end": { "type": "integer", "minimum": 0, "maximum": 9007199254740991 } }, "required": [ "start", "end" ], "additionalProperties": false } }, "matchesTruncated": { "type": "boolean" }, "requestedStart": { "anyOf": [ { "type": "integer", "minimum": 0, "maximum": 9007199254740991 }, { "type": "null" } ] } }, "required": [ "id", "sourceId", "status", "occurrenceCount", "matches", "matchesTruncated", "requestedStart" ], "additionalProperties": false } } }, "required": [ "profile", "allVerified", "verifiesTruth", "offsetUnit", "sources", "quotes" ], "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": { "sources": [ { "id": "memo", "text": "Launch requires two approvals. Launch date is pending." } ], "quotes": [ { "id": "q1", "sourceId": "memo", "text": "two approvals", "start": 16 }, { "id": "q2", "sourceId": "memo", "text": "Launch" } ] }, "exampleResponse": { "operation": "evidence-quote-check", "version": "0.29.0", "result": { "profile": "literal-quote-v1", "allVerified": false, "verifiesTruth": false, "offsetUnit": "UTF-16-code-units", "sources": [ { "id": "memo", "length": 54, "sha256Utf8": "f2192aa3501f668ea10cf34d338c5dcab73f0b31644d991b2d7c5cb36d9d69f1" } ], "quotes": [ { "id": "q1", "sourceId": "memo", "status": "verified", "occurrenceCount": 1, "matches": [ { "start": 16, "end": 29 } ], "matchesTruncated": false, "requestedStart": 16 }, { "id": "q2", "sourceId": "memo", "status": "ambiguous", "occurrenceCount": 2, "matches": [ { "start": 0, "end": 6 }, { "start": 31, "end": 37 } ], "matchesTruncated": false, "requestedStart": null } ] }, "provenance": { "inputSha256": "9a9594408841790142d74851b491359b5edd3f738300edc0f10a1df0538a28f6", "outputSha256": "ee4c1d855a2c7f287bcfd522c0f153fa1b573ccbc242a4c0155326de5d98d957", "deterministic": true, "externalRequests": 0 } }, "requiredHeaders": { "Content-Type": "application/json", "Idempotency-Key": "random 16–128 character operation identifier" }, "fixedExample": "/reference/examples/evidence-quote-check.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." } }