> ## Documentation Index
> Fetch the complete documentation index at: https://docs.firedrill.run/llms.txt
> Use this file to discover all available pages before exploring further.

# Page through scheduled events, callbacks, or active faults

> Cursors bind the exact session lease, filters, and collection revision. If work changes, restart from the first page after a lifecycle conflict. Faults have no status filter; event and callback statuses are category-specific.



## OpenAPI

````yaml /api-reference/openapi.json get /v1/projects/{projectId}/sessions/{sessionId}/pending/items
openapi: 3.1.0
info:
  title: Firedrill Control API
  version: 1.0.0
  description: >-
    The control plane for drills, drill runs, and the worlds they run in. Errors
    always carry the canonical envelope; unsafe operations require an
    Idempotency-Key; long work returns an operation resource.
servers:
  - url: https://api.firedrill.run
security:
  - controlCredential: []
tags:
  - name: authentication
    description: Sessions, CLI exchange, credentials, and verification keys.
    x-group: Authentication
  - name: organizations
    description: Organization members, billing, usage, retention, audit, and exports.
    x-group: Organizations
  - name: projects
    description: Project lifecycle, access, grants, and repository bindings.
    x-group: Projects
  - name: builds
    description: Immutable builds, uploads, source drafts, and world definitions.
    x-group: Builds and source
  - name: tools
    description: Project Tool discovery, approval, source, and revocation.
    x-group: Tool library
  - name: worlds
    description: >-
      Managed environments, world sessions, state, time, reset, faults, forks,
      and snapshots.
    x-group: Environments and sessions
  - name: runs
    description: >-
      Hosted runs, comparisons, attachments, reports, evidence bundles, sharing,
      and exports.
    x-group: Runs and evidence
  - name: browser
    description: Managed browser tests, runs, messages, streams, frames, and artifacts.
    x-group: Browser testing
  - name: callbacks
    description: Callback receiver approval, revocation, and signing material.
    x-group: Callbacks
  - name: github-ci
    description: >-
      GitHub installations, repository automation, CI suites, cases, evidence,
      and checks.
    x-group: GitHub and CI
  - name: authoring
    description: Authoring sessions, proposals, turns, and scenario proposals.
    x-group: Cloud authoring
paths:
  /v1/projects/{projectId}/sessions/{sessionId}/pending/items:
    get:
      tags:
        - worlds
      summary: Page through scheduled events, callbacks, or active faults
      description: >-
        Cursors bind the exact session lease, filters, and collection revision.
        If work changes, restart from the first page after a lifecycle conflict.
        Faults have no status filter; event and callback statuses are
        category-specific.
      operationId: sessions.listPendingItems
      parameters:
        - name: projectId
          in: path
          required: true
          schema:
            type: string
            pattern: ^prj_[0-9a-z]{12,32}$
        - name: sessionId
          in: path
          required: true
          schema:
            type: string
            pattern: ^ses_[0-9a-z]{12,32}$
        - name: category
          in: query
          required: true
          schema:
            type: string
            enum:
              - events
              - callbacks
              - faults
        - name: packageId
          in: query
          required: false
          schema:
            type: string
            minLength: 1
            maxLength: 96
        - name: status
          in: query
          required: false
          schema:
            type: string
            enum:
              - pending
              - fired
              - failed
              - cancelled
              - in_flight
              - delivered
        - name: cursor
          in: query
          required: false
          schema:
            type: string
            minLength: 1
            maxLength: 2048
        - name: limit
          in: query
          required: false
          schema:
            default: 50
            type: integer
            minimum: 1
            maximum: 100
      responses:
        '200':
          description: Pending-work page
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WorldPendingPage'
        default:
          description: Canonical error envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorEnvelope'
components:
  schemas:
    WorldPendingPage:
      oneOf:
        - type: object
          properties:
            schemaVersion:
              type: number
              enum:
                - 1
            sessionId:
              type: string
              pattern: ^ses_[0-9a-z]{12,32}$
            leaseGeneration:
              type: integer
              minimum: 0
              exclusiveMinimum: true
              maximum: 9007199254740991
            revision:
              type: string
              pattern: ^sha256:[0-9a-f]{64}$
              description: >-
                Fingerprint of the selected pending-work collection. A change
                invalidates its cursor.
            total:
              type: integer
              minimum: -9007199254740991
              maximum: 9007199254740991
            nextCursor:
              type: string
              minLength: 1
              maxLength: 2048
            category:
              type: string
              enum:
                - events
            items:
              maxItems: 100
              type: array
              items:
                type: object
                properties:
                  id:
                    type: string
                    pattern: ^pending_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  event:
                    type: object
                    properties:
                      packageId:
                        type: string
                        minLength: 1
                        maxLength: 96
                        pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                      eventId:
                        type: string
                        minLength: 1
                        maxLength: 160
                        pattern: >-
                          ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*(?:\.[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*)*$
                    required:
                      - packageId
                      - eventId
                    additionalProperties: false
                  payload:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/WorldPendingPage___schema0'
                  dueUs:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                  correlationId:
                    type: string
                    pattern: ^corr_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  actorBindingId:
                    type: string
                    pattern: ^actor_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  causeSequence:
                    type: integer
                    minimum: 0
                    exclusiveMinimum: true
                    maximum: 9007199254740991
                  status:
                    type: string
                    enum:
                      - pending
                      - fired
                      - failed
                      - cancelled
                required:
                  - id
                  - event
                  - payload
                  - dueUs
                  - correlationId
                  - actorBindingId
                  - causeSequence
                  - status
                additionalProperties: false
          required:
            - schemaVersion
            - sessionId
            - leaseGeneration
            - revision
            - total
            - category
            - items
          additionalProperties: false
        - type: object
          properties:
            schemaVersion:
              type: number
              enum:
                - 1
            sessionId:
              type: string
              pattern: ^ses_[0-9a-z]{12,32}$
            leaseGeneration:
              type: integer
              minimum: 0
              exclusiveMinimum: true
              maximum: 9007199254740991
            revision:
              type: string
              pattern: ^sha256:[0-9a-f]{64}$
              description: >-
                Fingerprint of the selected pending-work collection. A change
                invalidates its cursor.
            total:
              type: integer
              minimum: -9007199254740991
              maximum: 9007199254740991
            nextCursor:
              type: string
              minLength: 1
              maxLength: 2048
            category:
              type: string
              enum:
                - callbacks
            items:
              maxItems: 100
              type: array
              items:
                type: object
                properties:
                  id:
                    type: string
                    pattern: ^delivery_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  callback:
                    type: object
                    properties:
                      packageId:
                        type: string
                        minLength: 1
                        maxLength: 96
                        pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                      callbackId:
                        type: string
                        minLength: 1
                        maxLength: 96
                        pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                    required:
                      - packageId
                      - callbackId
                    additionalProperties: false
                  receiverId:
                    type: string
                    minLength: 1
                    maxLength: 96
                    pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                  event:
                    type: object
                    properties:
                      packageId:
                        type: string
                        minLength: 1
                        maxLength: 96
                        pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                      eventId:
                        type: string
                        minLength: 1
                        maxLength: 160
                        pattern: >-
                          ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*(?:\.[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*)*$
                    required:
                      - packageId
                      - eventId
                    additionalProperties: false
                  payload:
                    type: object
                    additionalProperties:
                      $ref: '#/components/schemas/WorldPendingPage___schema0'
                  eventSequence:
                    type: integer
                    minimum: 0
                    exclusiveMinimum: true
                    maximum: 9007199254740991
                  dueUs:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                  correlationId:
                    type: string
                    pattern: ^corr_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  actorBindingId:
                    type: string
                    pattern: ^actor_[A-Za-z0-9][A-Za-z0-9_-]{5,95}$
                  status:
                    type: string
                    enum:
                      - pending
                      - in_flight
                      - delivered
                      - failed
                  attemptCount:
                    type: integer
                    minimum: -9007199254740991
                    maximum: 9007199254740991
                  retryDelaysUs:
                    maxItems: 100
                    type: array
                    items:
                      type: integer
                      minimum: -9007199254740991
                      maximum: 9007199254740991
                required:
                  - id
                  - callback
                  - receiverId
                  - event
                  - payload
                  - eventSequence
                  - dueUs
                  - correlationId
                  - actorBindingId
                  - status
                  - attemptCount
                  - retryDelaysUs
                additionalProperties: false
          required:
            - schemaVersion
            - sessionId
            - leaseGeneration
            - revision
            - total
            - category
            - items
          additionalProperties: false
        - type: object
          properties:
            schemaVersion:
              type: number
              enum:
                - 1
            sessionId:
              type: string
              pattern: ^ses_[0-9a-z]{12,32}$
            leaseGeneration:
              type: integer
              minimum: 0
              exclusiveMinimum: true
              maximum: 9007199254740991
            revision:
              type: string
              pattern: ^sha256:[0-9a-f]{64}$
              description: >-
                Fingerprint of the selected pending-work collection. A change
                invalidates its cursor.
            total:
              type: integer
              minimum: -9007199254740991
              maximum: 9007199254740991
            nextCursor:
              type: string
              minLength: 1
              maxLength: 2048
            category:
              type: string
              enum:
                - faults
            items:
              maxItems: 100
              type: array
              items:
                type: object
                properties:
                  packageId:
                    type: string
                    minLength: 1
                    maxLength: 96
                    pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                  faultId:
                    type: string
                    minLength: 1
                    maxLength: 96
                    pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                required:
                  - packageId
                  - faultId
                additionalProperties: false
          required:
            - schemaVersion
            - sessionId
            - leaseGeneration
            - revision
            - total
            - category
            - items
          additionalProperties: false
    ErrorEnvelope:
      type: object
      properties:
        code:
          type: string
          pattern: ^(control|world)\.[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$
        message:
          type: string
          minLength: 1
        correlationId:
          type: string
          minLength: 1
        retryable:
          type: boolean
        retryAfterMs:
          type: integer
          exclusiveMinimum: 0
          maximum: 9007199254740991
        operationId:
          type: string
        source:
          type: string
          enum:
            - platform
            - simulated_provider
        issues:
          type: array
          items:
            type: object
            properties:
              path:
                type: string
              code:
                type: string
              message:
                type: string
            required:
              - path
              - code
              - message
            additionalProperties: false
        details:
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
        evidence:
          type: object
          properties:
            sessionId:
              type: string
            runId:
              type: string
            journalSeq:
              type: integer
              minimum: 0
              maximum: 9007199254740991
            buildHash:
              type: string
          additionalProperties: false
      required:
        - code
        - message
        - correlationId
        - retryable
        - source
      additionalProperties: true
    WorldPendingPage___schema0:
      description: Any JSON-compatible value
  securitySchemes:
    controlCredential:
      type: http
      scheme: bearer
      description: Opaque control credential

````