> ## Documentation Index > Fetch the complete documentation index at: https://docs.getarbol.com/llms.txt > Use this file to discover all available pages before exploring further. # Cancel an Agent evaluation run > Records a cancellation request under agents:read and agent-evaluations:run; running trials stop only at their durable boundary. A repeated request against a terminal run returns conflict, so inspect the returned state before retrying. ## OpenAPI ````yaml https://api.getarbol.com/openapi.json post /agents/{agentId}/evaluation-runs/{runId}/cancel openapi: 3.1.2 info: contact: email: support@getarbol.com name: Arbol url: https://docs.getarbol.com description: >- Provider-neutral API for creating and operating Arbol agents, contacts, conversations, channels, knowledge, integrations, and evaluations. Every request is bound to one Auth0 Organization. title: Arbol API version: 1.0.0 servers: - description: Production url: https://api.getarbol.com/v1 security: [] paths: /agents/{agentId}/evaluation-runs/{runId}/cancel: post: tags: - Agent evaluations summary: Cancel an Agent evaluation run description: >- Records a cancellation request under agents:read and agent-evaluations:run; running trials stop only at their durable boundary. A repeated request against a terminal run returns conflict, so inspect the returned state before retrying. operationId: cancelAgentEvaluationRun parameters: - in: path required: true name: agentId schema: $ref: '#/components/schemas/ArbolResourceId' - in: path required: true name: runId schema: $ref: '#/components/schemas/ArbolResourceId' requestBody: content: application/json: schema: type: object properties: {} responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/AgentEvaluationRun' headers: X-Request-Id: $ref: '#/components/headers/RequestId' '400': description: >- Inferable validation failure or a non-inferable malformed transport request. content: application/json: schema: oneOf: - oneOf: - $ref: '#/components/schemas/BadRequest' - $ref: '#/components/schemas/UndefinedError' - $ref: '#/components/schemas/TransportBadRequestError' headers: X-Request-Id: $ref: '#/components/headers/RequestId' '401': description: Authentication is required. content: application/json: schema: oneOf: - $ref: '#/components/schemas/Unauthorized' - $ref: '#/components/schemas/UndefinedError' headers: X-Request-Id: $ref: '#/components/headers/RequestId' '403': description: The caller is not allowed to perform this operation. content: application/json: schema: oneOf: - $ref: '#/components/schemas/Forbidden' - $ref: '#/components/schemas/UndefinedError' headers: X-Request-Id: $ref: '#/components/headers/RequestId' '404': description: Evaluation run not found content: application/json: schema: oneOf: - $ref: '#/components/schemas/NotFound' - $ref: '#/components/schemas/UndefinedError' headers: X-Request-Id: $ref: '#/components/headers/RequestId' '409': description: Evaluation run is already terminal content: application/json: schema: oneOf: - $ref: '#/components/schemas/Conflict' - $ref: '#/components/schemas/UndefinedError' headers: X-Request-Id: $ref: '#/components/headers/RequestId' security: - userOAuth: - org:use - agents:read - agent-evaluations:run - machineOAuth: - agents:read - agent-evaluations:run components: schemas: ArbolResourceId: type: string maxLength: 64 pattern: >- ^[a-z][a-z0-9]{1,15}_[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$ description: >- Opaque Arbol resource identifier; the endpoint and tenant-scoped lookup determine its resource type. examples: - agt_018f47a2-4f4d-7d61-9e2c-1d7b8e9a0c31 title: Arbol resource ID AgentEvaluationRun: type: object properties: agentId: $ref: '#/components/schemas/ArbolResourceId' baselineRunId: anyOf: - $ref: '#/components/schemas/ArbolResourceId' - type: 'null' cancelRequestedAt: anyOf: - $ref: '#/components/schemas/IsoDatetime' - type: 'null' completedAt: anyOf: - $ref: '#/components/schemas/IsoDatetime' - type: 'null' completedTrials: type: integer minimum: 0 maximum: 9007199254740991 createdAt: $ref: '#/components/schemas/IsoDatetime' failedTrials: type: integer minimum: 0 maximum: 9007199254740991 id: $ref: '#/components/schemas/ArbolResourceId' passedTrials: type: integer minimum: 0 maximum: 9007199254740991 repetitions: type: integer exclusiveMinimum: 0 maximum: 9007199254740991 result: anyOf: - type: string enum: - pass - fail - unknown - type: 'null' startedAt: anyOf: - $ref: '#/components/schemas/IsoDatetime' - type: 'null' status: type: string enum: - queued - running - completed - failed - cancelled suiteId: $ref: '#/components/schemas/ArbolResourceId' suiteRevision: type: integer exclusiveMinimum: 0 maximum: 9007199254740991 summary: anyOf: - type: object properties: baseline: anyOf: - type: object properties: baselineRunId: $ref: '#/components/schemas/ArbolResourceId' failedDelta: type: integer minimum: -9007199254740991 maximum: 9007199254740991 passedDelta: type: integer minimum: -9007199254740991 maximum: 9007199254740991 perCase: maxItems: 50 type: array items: type: object properties: caseId: type: string maxLength: 100 passRateBpsDelta: anyOf: - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: 'null' required: - caseId - passRateBpsDelta additionalProperties: false unknownDelta: type: integer minimum: -9007199254740991 maximum: 9007199254740991 required: - baselineRunId - failedDelta - passedDelta - perCase - unknownDelta additionalProperties: false - type: 'null' cost: type: object properties: actualComponents: type: integer minimum: 0 maximum: 9007199254740991 actualMicrousd: type: integer minimum: 0 maximum: 9007199254740991 currency: type: string const: USD estimatedComponents: type: integer minimum: 0 maximum: 9007199254740991 estimatedMicrousd: type: integer minimum: 0 maximum: 9007199254740991 pricingPolicyVersion: type: string minLength: 1 maxLength: 100 unknownComponents: type: integer minimum: 0 maximum: 9007199254740991 required: - actualComponents - actualMicrousd - currency - estimatedComponents - estimatedMicrousd - pricingPolicyVersion - unknownComponents additionalProperties: false duration: type: object properties: averageMs: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' totalMs: type: integer minimum: 0 maximum: 9007199254740991 required: - averageMs - totalMs additionalProperties: false failures: maxItems: 1550 type: array items: type: object properties: count: type: integer exclusiveMinimum: 0 maximum: 9007199254740991 result: type: string enum: - fail - unknown scorerKey: type: string maxLength: 100 required: - count - result - scorerKey additionalProperties: false overall: type: object properties: attempted: type: integer minimum: 0 maximum: 9007199254740991 failed: type: integer minimum: 0 maximum: 9007199254740991 passed: type: integer minimum: 0 maximum: 9007199254740991 passRateBps: anyOf: - type: integer minimum: 0 maximum: 10000 - type: 'null' unknown: type: integer minimum: 0 maximum: 9007199254740991 required: - attempted - failed - passed - passRateBps - unknown additionalProperties: false perCase: maxItems: 50 type: array items: type: object properties: caseId: type: string maxLength: 100 counts: type: object properties: attempted: type: integer minimum: 0 maximum: 9007199254740991 failed: type: integer minimum: 0 maximum: 9007199254740991 passed: type: integer minimum: 0 maximum: 9007199254740991 passRateBps: anyOf: - type: integer minimum: 0 maximum: 10000 - type: 'null' unknown: type: integer minimum: 0 maximum: 9007199254740991 required: - attempted - failed - passed - passRateBps - unknown additionalProperties: false required: - caseId - counts additionalProperties: false tokenUsage: type: object properties: judge: anyOf: - type: object properties: cacheReadInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' cacheWriteInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' inputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' noCacheInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' outputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' reasoningOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' textOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' totalTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' required: - cacheReadInputTokens - cacheWriteInputTokens - inputTokens - noCacheInputTokens - outputTokens - reasoningOutputTokens - textOutputTokens - totalTokens additionalProperties: false - type: 'null' simulator: anyOf: - type: object properties: cacheReadInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' cacheWriteInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' inputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' noCacheInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' outputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' reasoningOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' textOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' totalTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' required: - cacheReadInputTokens - cacheWriteInputTokens - inputTokens - noCacheInputTokens - outputTokens - reasoningOutputTokens - textOutputTokens - totalTokens additionalProperties: false - type: 'null' target: anyOf: - type: object properties: cacheReadInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' cacheWriteInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' inputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' noCacheInputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' outputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' reasoningOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' textOutputTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' totalTokens: anyOf: - type: integer minimum: 0 maximum: 9007199254740991 - type: 'null' required: - cacheReadInputTokens - cacheWriteInputTokens - inputTokens - noCacheInputTokens - outputTokens - reasoningOutputTokens - textOutputTokens - totalTokens additionalProperties: false - type: 'null' required: - judge - simulator - target additionalProperties: false required: - baseline - cost - duration - failures - overall - perCase - tokenUsage additionalProperties: false - type: 'null' targetKind: type: string enum: - canonical totalTrials: type: integer exclusiveMinimum: 0 maximum: 9007199254740991 unknownTrials: type: integer minimum: 0 maximum: 9007199254740991 updatedAt: $ref: '#/components/schemas/IsoDatetime' required: - agentId - baselineRunId - cancelRequestedAt - completedAt - completedTrials - createdAt - failedTrials - id - passedTrials - repetitions - result - startedAt - status - suiteId - suiteRevision - summary - targetKind - totalTrials - unknownTrials - updatedAt additionalProperties: false description: >- Durable evaluation execution state and aggregate result over an immutable run snapshot. title: Agent evaluation run BadRequest: type: object properties: defined: const: true inferable: type: boolean code: const: BAD_REQUEST status: const: 400 message: type: string data: type: object properties: issues: maxItems: 20 type: array items: type: object properties: message: type: string maxLength: 500 path: maxItems: 16 type: array items: anyOf: - type: string maxLength: 120 - type: integer minimum: -9007199254740991 maximum: 9007199254740991 required: - message additionalProperties: false truncated: type: boolean required: - issues - truncated additionalProperties: false required: - defined - inferable - code - status - message - data UndefinedError: type: object properties: defined: const: false inferable: type: boolean code: type: string status: type: number message: type: string data: {} required: - defined - inferable - code - status - message TransportBadRequestError: additionalProperties: false properties: code: const: BAD_REQUEST data: {} defined: const: false inferable: const: false message: type: string required: - defined - inferable - code - message type: object Unauthorized: type: object properties: defined: const: true inferable: type: boolean code: const: UNAUTHORIZED status: const: 401 message: type: string data: {} required: - defined - inferable - code - status - message Forbidden: type: object properties: defined: const: true inferable: type: boolean code: const: FORBIDDEN status: const: 403 message: type: string data: type: object properties: missingPermissions: maxItems: 10 type: array items: $ref: '#/components/schemas/AuthPermission' required: - missingPermissions additionalProperties: false required: - defined - inferable - code - status - message NotFound: type: object properties: defined: const: true inferable: type: boolean code: const: NOT_FOUND status: const: 404 message: type: string data: {} required: - defined - inferable - code - status - message Conflict: type: object properties: defined: const: true inferable: type: boolean code: const: CONFLICT status: const: 409 message: type: string data: type: object properties: currentStatus: type: string enum: - queued - running - completed - failed - cancelled required: - currentStatus additionalProperties: false required: - defined - inferable - code - status - message - data IsoDatetime: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d:[0-5]\d(?:\.\d+)?(?:Z|([+-](?:[01]\d|2[0-3]):[0-5]\d)))$ description: ISO 8601 timestamp with an explicit UTC offset. examples: - '2026-08-29T14:30:00Z' title: ISO timestamp AuthPermission: type: string enum: - agent-evaluations:read - agent-evaluations:run - agent-evaluations:write - agents:read - agents:write - analytics:read - arbi:use - channels:read - channels:write - contacts:read - contacts:write - conversations:read - conversations:transcript - conversations:write - definitions:read - definitions:write - facts:read - facts:write - integrations:read - integrations:write - knowledge:read - knowledge:write - org:manage - org:use description: >- One permission from the closed Arbol API vocabulary accepted from a verified Auth0 token. examples: - agents:read title: API permission headers: RequestId: description: >- Opaque request correlation identifier. Include it when contacting Arbol support. schema: type: string maxLength: 128 securitySchemes: userOAuth: description: >- Organization-scoped Auth0 user access token issued to an approved first-party client or exchanged by a trusted OBO resource server. flows: authorizationCode: authorizationUrl: https://auth.getarbol.com/authorize scopes: agent-evaluations:read: Read Agent evaluation suites, runs, and results. agent-evaluations:run: Execute and cancel Agent evaluation runs. agent-evaluations:write: Create and update Agent evaluation suites. agents:read: Read Agents and their explicitly requested expansions. agents:write: Create, update, and delete Agents. analytics:read: Read organization analytics. arbi:use: Use the personal Arbi workspace. channels:read: Read Agent channels. channels:write: Create, update, authorize, and delete Agent channels. contacts:read: Read Contacts and their explicitly requested expansions. contacts:write: Create, update, merge, import, and delete Contacts. conversations:read: Read Conversation metadata. conversations:transcript: Read Conversation messages and media evidence. conversations:write: Create and process Conversations. definitions:read: Read Definitions and Definition usage. definitions:write: Create, update, and retire Definitions. facts:read: Read current and historical Facts. facts:write: Assert typed Facts. integrations:read: Discover integrations, tools, accounts, and tool-bearing evidence. integrations:write: Authorize accounts and assign exact tool access. knowledge:read: Read Knowledge documents and search indexed content. knowledge:write: Create, index, update, and delete Knowledge documents. org:manage: Update the Organization and administer its members. org:use: Use Arbol as a member of the selected Auth0 Organization. tokenUrl: https://auth.getarbol.com/oauth/token type: oauth2 machineOAuth: description: >- Organization-bound Auth0 client-credentials token. The client grant must contain every operation scope. flows: clientCredentials: scopes: agent-evaluations:read: Read Agent evaluation suites, runs, and results. agent-evaluations:run: Execute and cancel Agent evaluation runs. agent-evaluations:write: Create and update Agent evaluation suites. agents:read: Read Agents and their explicitly requested expansions. agents:write: Create, update, and delete Agents. analytics:read: Read organization analytics. channels:read: Read Agent channels. channels:write: Create, update, authorize, and delete Agent channels. contacts:read: Read Contacts and their explicitly requested expansions. contacts:write: Create, update, merge, import, and delete Contacts. conversations:read: Read Conversation metadata. conversations:transcript: Read Conversation messages and media evidence. conversations:write: Create and process Conversations. definitions:read: Read Definitions and Definition usage. definitions:write: Create, update, and retire Definitions. facts:read: Read current and historical Facts. facts:write: Assert typed Facts. integrations:read: Discover integrations, tools, accounts, and tool-bearing evidence. integrations:write: Authorize accounts and assign exact tool access. knowledge:read: Read Knowledge documents and search indexed content. knowledge:write: Create, index, update, and delete Knowledge documents. org:manage: Update the Organization and administer its members. tokenUrl: https://auth.getarbol.com/oauth/token type: oauth2 ````