Checked Text Edit Application
Atomically apply explicit nonoverlapping UTF-16 text edits after exact expected-slice and optional SHA-256 checks. Returns edited text, applied IDs and unchanged/replacement source mappings. Rejects split Unicode scalars and ambiguous insertion boundaries.
document-assurance · Operation ID: text-edits-apply
Choose this operation when
- Apply agent-proposed document edits with exact source assertions
- Produce source-to-result offset evidence for controlled text transformations
Outside this profile
- Fuzzy matching, natural-language revision or edits to files on disk
- Mapping semantic annotations inside replacement text
Exact release references
Static JSON contract · Markdown reference · Fixed example response
Complete input schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"text": {
"type": "string",
"maxLength": 90000
},
"expectedSha256": {
"type": "string",
"pattern": "^[a-fA-F0-9]{64}$"
},
"edits": {
"maxItems": 200,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"minLength": 1,
"maxLength": 80
},
"start": {
"type": "integer",
"minimum": 0,
"maximum": 90000
},
"end": {
"type": "integer",
"minimum": 0,
"maximum": 90000
},
"expected": {
"type": "string",
"maxLength": 90000
},
"replacement": {
"type": "string",
"maxLength": 90000
}
},
"required": [
"id",
"start",
"end",
"expected",
"replacement"
],
"additionalProperties": false
}
}
},
"required": [
"text",
"edits"
],
"additionalProperties": false
}
Complete output-envelope schema
{
"type": "object",
"required": [
"operation",
"version",
"result",
"provenance"
],
"properties": {
"operation": {
"const": "text-edits-apply",
"type": "string"
},
"version": {
"const": "0.29.0",
"type": "string"
},
"result": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"profile": {
"type": "string",
"const": "checked-utf16-edits-v1"
},
"text": {
"type": "string"
},
"sourceSha256": {
"type": "string",
"pattern": "^[a-fA-F0-9]{64}$"
},
"resultSha256": {
"type": "string",
"pattern": "^[a-fA-F0-9]{64}$"
},
"appliedEditIds": {
"type": "array",
"items": {
"type": "string"
}
},
"mapping": {
"type": "array",
"items": {
"type": "object",
"properties": {
"kind": {
"type": "string",
"enum": [
"unchanged",
"replacement"
]
},
"editId": {
"type": [
"string",
"null"
]
},
"sourceStart": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"sourceEnd": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"resultStart": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"resultEnd": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
}
},
"required": [
"kind",
"editId",
"sourceStart",
"sourceEnd",
"resultStart",
"resultEnd"
],
"additionalProperties": false
}
}
},
"required": [
"profile",
"text",
"sourceSha256",
"resultSha256",
"appliedEditIds",
"mapping"
],
"additionalProperties": false
},
"provenance": {
"type": "object",
"required": [
"inputSha256",
"outputSha256",
"deterministic",
"externalRequests"
],
"properties": {
"inputSha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"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
{
"text": "Status: draft. Owner: Ada.",
"edits": [
{
"id": "approve",
"start": 8,
"end": 13,
"expected": "draft",
"replacement": "approved"
}
]
}
Example response
{
"operation": "text-edits-apply",
"version": "0.29.0",
"result": {
"profile": "checked-utf16-edits-v1",
"text": "Status: approved. Owner: Ada.",
"sourceSha256": "337061ebf7debcb2aa7c3c8d377a51252766fe4d8463db95a1e92bde917801b4",
"resultSha256": "9a035e2245d18debca13e5035077c0b4f99b15ffbe096a931aa2869948adfbde",
"appliedEditIds": [
"approve"
],
"mapping": [
{
"kind": "unchanged",
"editId": null,
"sourceStart": 0,
"sourceEnd": 8,
"resultStart": 0,
"resultEnd": 8
},
{
"kind": "replacement",
"editId": "approve",
"sourceStart": 8,
"sourceEnd": 13,
"resultStart": 8,
"resultEnd": 16
},
{
"kind": "unchanged",
"editId": null,
"sourceStart": 13,
"sourceEnd": 26,
"resultStart": 16,
"resultEnd": 29
}
]
},
"provenance": {
"inputSha256": "ea5b685091d59b005a2dbb8d8c00538af94be5694555cae5bbef485e8d72fe7f",
"outputSha256": "da1702f71331c0a23e70c9f870d9a63e2e3bf4891b0eb3fd6693a1135f1822a5",
"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,
"edits": 200,
"resultCodeUnits": 200000,
"offsetUnit": "utf16-code-units"
}
}
Complete schemas, descriptions and cross-field validation may impose additional limits.
Proposed price and protocol definitions
{
"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."
}
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/text-edits-apply",
"mpp": "/v1/mpp/text-edits-apply"
}
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.