Literal Quote Evidence Check
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.
workflow-assurance · Operation ID: evidence-quote-check
Choose this operation when
- Verify agent-generated quotations against supplied source passages
- Locate exact quote offsets and detect ambiguous repeated evidence
Outside this profile
- Fact checking, semantic support, paraphrase matching or source authenticity
- Fetching cited URLs or verifying unseen documents
Exact release references
Static JSON contract · Markdown reference · Fixed example response
Complete input schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"sources": {
"maxItems": 100,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"minLength": 1,
"maxLength": 80
},
"text": {
"type": "string",
"maxLength": 90000
}
},
"required": [
"id",
"text"
],
"additionalProperties": false
}
},
"quotes": {
"maxItems": 200,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"minLength": 1,
"maxLength": 80
},
"sourceId": {
"type": "string",
"minLength": 1,
"maxLength": 80
},
"text": {
"type": "string",
"minLength": 1,
"maxLength": 10000
},
"start": {
"type": "integer",
"minimum": 0,
"maximum": 90000
}
},
"required": [
"id",
"sourceId",
"text"
],
"additionalProperties": false
}
}
},
"required": [
"sources",
"quotes"
],
"additionalProperties": false
}
Complete output-envelope schema
{
"type": "object",
"required": [
"operation",
"version",
"result",
"provenance"
],
"properties": {
"operation": {
"const": "evidence-quote-check",
"type": "string"
},
"version": {
"const": "0.29.0",
"type": "string"
},
"result": {
"$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
}
Fixed example
One accepted fixed example, not a custom-input trial. No operation runs when this static page is requested.
Example input
{
"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"
}
]
}
Example response
{
"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
}
}
Bounds and precision
JavaScript IEEE-754 numbers; use strings for large integer IDs/exact decimals where the schema accepts strings. No lossless numeric parsing.
{
"global": {
"requestBytes": 131072,
"responseBytes": 524288,
"jsonDepth": 32,
"jsonNodes": 20000,
"requestsPerMinute": 60,
"paidAttemptsPerMinute": 20,
"idempotencyHours": 24
},
"operation": {
"inputBytes": 100000,
"outputBytes": 400000,
"jsonNodes": 8000,
"depth": 20,
"findings": 200,
"quoteSearchCharacters": 4000000,
"quoteOccurrenceEvaluations": 200000,
"sources": 100,
"quotes": 200,
"matchesPerQuote": 20
}
}
Complete schemas, descriptions and cross-field validation may impose additional limits.
Proposed price and protocol definitions
{
"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."
}
Protocol definitions: x402, mpp. MPP uses Tempo charge. Paid MCP execution is unsupported. All runtime readiness is not evaluated in this build.
API path templates, not endpoints on this documentation host
{
"x402": "/v1/x402/evidence-quote-check",
"mpp": "/v1/mpp/evidence-quote-check"
}
Required headers
{
"Content-Type": "application/json",
"Idempotency-Key": "random 16–128 character operation identifier"
}
Actual SDK challenge amount, asset, network, recipient and wallet costs must pass independent authorization. Preserve identical key, body, protocol and credential on retries; on PAYMENT_UNCERTAIN stop and reconcile.
Execution profile and provider conditions
{
"deterministic": true,
"externalRequests": 0,
"maxExternalRequests": 0,
"resultSnapshotPersisted": false,
"fixedExampleIsIllustrativeSnapshot": false,
"requiresPayment": true,
"supportsMcpExecution": false
}
Deterministic supplied-input operation with no external requests or stored request/result bodies. Payment infrastructure retains payment metadata and hashes.
Failure handling
- HTTP 400: Malformed JSON, missing/invalid idempotency key, or payment identifier mismatch Correct the request before payment
- HTTP 402: Payment challenge or rejected payment Use official protocol SDK; inspect payment outcome before another payment
- HTTP 409: Idempotency conflict, duplicate proof, or PAYMENT_UNCERTAIN Keep original key, body, and proof; reconcile uncertainty with operator; never blindly repay
- HTTP 413: Input or generated output too large Reduce input; no payment attempted for validation failure
- HTTP 415: Unsupported media type or compression Send uncompressed application/json
- HTTP 422: Schema or service-specific semantic validation failure Correct input using returned error code; no payment attempted
- HTTP 429: Request/payment-attempt rate exceeded Wait for rate limit window; preserve existing payment identity
- HTTP 503: Payment configuration/provider/state unavailable, or live DNS preparation failed before settlement Check readiness; DNS preparation failures may retry the identical key/body/credential only; uncertainty requires reconciliation
Declared requirements
Before any paid call, refresh the live operation contract and POST the complete bounded budgeted plan to the separate API's /preflight. Unknown requirements block selection; compatible preflight is not permission to spend.