Idempotency observation conflict check
Group supplied attempts by exact scope and idempotency key; find conflicting operation/request or success-result fingerprints and unresolved/stale pending outcomes. Advisory reconciliation only, never retry permission.
workflow-assurance · Operation ID: idempotency-conflict-check
Choose this operation when
- Find conflicting idempotency keys before retrying an uncertain agent tool call
- Triage duplicate success receipts and stale pending attempt logs
Outside this profile
- Executing tools, sending messages, retrying effects, restoring state, or contacting live services
- Authenticating evidence, verifying signatures or identities, granting permission, or enforcing authorization
- Inferring facts omitted from the supplied artifact snapshot or guaranteeing exactly-once execution
Exact release references
Static JSON contract · Markdown reference · Fixed example response
Complete input schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"asOfMs": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"pendingTimeoutMs": {
"type": "integer",
"minimum": 1,
"maximum": 604800000
},
"observations": {
"maxItems": 256,
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"scope": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"key": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"operation": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"request": {
"$ref": "#/$defs/__schema0"
},
"observedAtMs": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"status": {
"type": "string",
"enum": [
"pending",
"success",
"failure",
"unknown"
]
},
"result": {
"$ref": "#/$defs/__schema0"
}
},
"required": [
"id",
"scope",
"key",
"operation",
"request",
"observedAtMs",
"status"
],
"additionalProperties": false
}
}
},
"required": [
"asOfMs",
"pendingTimeoutMs",
"observations"
],
"additionalProperties": false,
"$defs": {
"__schema0": {
"anyOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"type": "array",
"items": {
"$ref": "#/$defs/__schema0"
}
},
{
"type": "object",
"propertyNames": {
"type": "string"
},
"additionalProperties": {
"$ref": "#/$defs/__schema0"
}
}
]
}
}
}
Complete output-envelope schema
{
"type": "object",
"required": [
"operation",
"version",
"result",
"provenance"
],
"properties": {
"operation": {
"const": "idempotency-conflict-check",
"type": "string"
},
"version": {
"const": "0.29.0",
"type": "string"
},
"result": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"type": "object",
"properties": {
"profile": {
"type": "string",
"const": "idempotency-conflict-v1"
},
"consistent": {
"type": "boolean"
},
"advisoryOnly": {
"type": "boolean",
"const": true
},
"digestProfile": {
"type": "string",
"const": "sorted-json-sha256-v1"
},
"groups": {
"maxItems": 256,
"type": "array",
"items": {
"type": "object",
"properties": {
"scope": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"key": {
"type": "string",
"minLength": 1,
"maxLength": 100
},
"observationIds": {
"maxItems": 256,
"type": "array",
"items": {
"type": "string",
"minLength": 1,
"maxLength": 100
}
},
"requestSha256s": {
"maxItems": 256,
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
}
},
"successfulResultSha256s": {
"maxItems": 256,
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
}
},
"conflict": {
"type": "boolean"
},
"unknownOutcome": {
"type": "boolean"
},
"stalePending": {
"type": "boolean"
},
"disposition": {
"type": "string",
"enum": [
"reconcile_conflict",
"reconcile_unknown",
"await_pending",
"inspect_recorded_success",
"inspect_failed_attempts"
]
}
},
"required": [
"scope",
"key",
"observationIds",
"requestSha256s",
"successfulResultSha256s",
"conflict",
"unknownOutcome",
"stalePending",
"disposition"
],
"additionalProperties": false
}
},
"limitations": {
"type": "array",
"items": {
"type": "string"
}
},
"findings": {
"maxItems": 200,
"type": "array",
"items": {
"type": "object",
"properties": {
"code": {
"type": "string"
},
"severity": {
"type": "string",
"enum": [
"error",
"warning"
]
},
"path": {
"type": "string"
},
"message": {
"type": "string"
},
"relatedIds": {
"maxItems": 8,
"type": "array",
"items": {
"type": "string",
"minLength": 1,
"maxLength": 100
}
}
},
"required": [
"code",
"severity",
"path",
"message",
"relatedIds"
],
"additionalProperties": false
}
},
"findingCount": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"errorCount": {
"type": "integer",
"minimum": 0,
"maximum": 9007199254740991
},
"truncated": {
"type": "boolean"
}
},
"required": [
"profile",
"consistent",
"advisoryOnly",
"digestProfile",
"groups",
"limitations",
"findings",
"findingCount",
"errorCount",
"truncated"
],
"additionalProperties": false
},
"provenance": {
"type": "object",
"required": [
"inputSha256",
"outputSha256",
"deterministic",
"externalRequests"
],
"properties": {
"inputSha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"outputSha256": {
"type": "string",
"pattern": "^[a-f0-9]{64}$"
},
"deterministic": {
"const": true
},
"externalRequests": {
"const": 0
}
}
}
},
"additionalProperties": false
}
Fixed example
One accepted fixed example, not a custom-input trial. No operation runs when this static page is requested.
Example input
{
"asOfMs": 10000,
"pendingTimeoutMs": 5000,
"observations": [
{
"id": "attempt-1",
"scope": "orders:create",
"key": "job-42",
"operation": "create-order",
"request": {
"sku": "A",
"quantity": 1
},
"observedAtMs": 1000,
"status": "unknown"
},
{
"id": "attempt-2",
"scope": "orders:create",
"key": "job-42",
"operation": "create-order",
"request": {
"sku": "A",
"quantity": 2
},
"observedAtMs": 2000,
"status": "pending"
}
]
}
Example response
{
"operation": "idempotency-conflict-check",
"version": "0.29.0",
"result": {
"profile": "idempotency-conflict-v1",
"consistent": false,
"advisoryOnly": true,
"digestProfile": "sorted-json-sha256-v1",
"groups": [
{
"scope": "orders:create",
"key": "job-42",
"observationIds": [
"attempt-1",
"attempt-2"
],
"requestSha256s": [
"7488fe0cd2d6e45a4a0200317d4531f76a5eb754864f5c1b9198d9f23380e1e5",
"f9d1806b28d3a6f92838c9d28bb6fd8832fc04dc74668f7427e989973d65527d"
],
"successfulResultSha256s": [],
"conflict": true,
"unknownOutcome": true,
"stalePending": true,
"disposition": "reconcile_conflict"
}
],
"limitations": [
"The namespace is exactly (scope,key); provider retention windows and key-generation changes are not inferred.",
"No result authorizes a retry, proves that an effect occurred once, or checks a provider's live idempotency store.",
"Pending and unknown records remain unresolved even if another record reports success; caller reconciliation is required.",
"Request fingerprints cover operation and request. Successful-result hashes cover supplied JSON only and are not authenticated receipts."
],
"findings": [
{
"code": "UNKNOWN_OUTCOME",
"severity": "warning",
"path": "/observations/0/status",
"message": "Reconcile provider evidence before considering another attempt",
"relatedIds": [
"attempt-1"
]
},
{
"code": "STALE_PENDING",
"severity": "warning",
"path": "/observations/1",
"message": "Pending observation exceeded the supplied review timeout; this does not prove failure",
"relatedIds": [
"attempt-2"
]
},
{
"code": "KEY_REQUEST_CONFLICT",
"severity": "error",
"path": "/observations/0/key",
"message": "The same scope and key were used for different operation/request fingerprints",
"relatedIds": [
"attempt-1",
"attempt-2"
]
}
],
"findingCount": 3,
"errorCount": 1,
"truncated": false
},
"provenance": {
"inputSha256": "6eefc98b638cd666018d9da7909bff489df07808a56386ae3571e13cb517cc6b",
"outputSha256": "9574ce734c89446b01aa669ff3910e3a98b76f8b9c5612cd0484bce978afd441",
"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": 12000,
"depth": 20,
"findings": 200,
"events": 256,
"actors": 32,
"traceSteps": 128,
"observations": 256,
"pendingTimeoutMaxMs": 604800000
}
}
Complete schemas, descriptions and cross-field validation may impose additional limits.
Proposed price and protocol definitions
{
"unit": "one successful operation call",
"proposedNominalUsd": "0.003",
"sixDecimalTokenBaseUnits": "3000",
"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/idempotency-conflict-check",
"mpp": "/v1/mpp/idempotency-conflict-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.