> ## 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.

# List immutable builds in a project with a stable cursor



## OpenAPI

````yaml /api-reference/openapi.json get /v1/projects/{projectId}/builds
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}/builds:
    get:
      tags:
        - builds
      summary: List immutable builds in a project with a stable cursor
      operationId: builds.list
      parameters:
        - name: projectId
          in: path
          required: true
          schema:
            type: string
            pattern: ^prj_[0-9a-z]{12,32}$
        - name: cursor
          in: query
          required: false
          schema:
            type: string
            minLength: 1
            maxLength: 2048
        - name: limit
          in: query
          required: false
          schema:
            default: 20
            type: integer
            minimum: 1
            maximum: 100
      responses:
        '200':
          description: Project builds
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HostedBuildPage'
        default:
          description: Canonical error envelope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorEnvelope'
components:
  schemas:
    HostedBuildPage:
      type: object
      properties:
        items:
          maxItems: 100
          type: array
          items:
            type: object
            properties:
              artifactState:
                type: string
                enum:
                  - available
                  - deleting
                  - deleted
              schemaVersion:
                type: number
                enum:
                  - 1
              organizationId:
                type: string
                pattern: ^org_[0-9a-z]{12,32}$
              projectId:
                type: string
                pattern: ^prj_[0-9a-z]{12,32}$
              buildHash:
                type: string
                pattern: ^sha256:[0-9a-f]{64}$
              artifactDigest:
                type: string
                pattern: ^sha256:[0-9a-f]{64}$
              artifactBytes:
                type: integer
                minimum: 0
                exclusiveMinimum: true
                maximum: 67108864
              engineVersion:
                type: string
                minLength: 1
                maxLength: 100
              packageLockHash:
                type: string
                pattern: ^sha256:[0-9a-f]{64}$
              worldProjection:
                type: object
                properties:
                  digest:
                    type: string
                    pattern: ^sha256:[0-9a-f]{64}$
                  bytes:
                    type: integer
                    minimum: 0
                    exclusiveMinimum: true
                    maximum: 16777216
                required:
                  - digest
                  - bytes
                additionalProperties: false
              definitionIndex:
                type: object
                properties:
                  schemaVersion:
                    type: number
                    enum:
                      - 1
                  worldId:
                    type: string
                    minLength: 1
                    maxLength: 96
                    pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                  defaultSeed:
                    type: string
                    pattern: ^(0|[1-9]\d{0,19})$
                  toolApps:
                    maxItems: 256
                    type: array
                    items:
                      type: object
                      properties:
                        packageId:
                          type: string
                          minLength: 1
                          maxLength: 96
                          pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        entry:
                          type: string
                          minLength: 1
                          maxLength: 512
                          pattern: >-
                            ^[A-Za-z0-9_-][A-Za-z0-9._-]*(?:\/[A-Za-z0-9_-][A-Za-z0-9._-]*)*$
                      required:
                        - packageId
                        - entry
                      additionalProperties: false
                  drills:
                    maxItems: 10000
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                          minLength: 1
                          maxLength: 96
                          pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        targetId:
                          type: string
                          minLength: 1
                          maxLength: 96
                          pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        tags:
                          maxItems: 10000
                          type: array
                          items:
                            type: string
                            minLength: 1
                            maxLength: 96
                            pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        classification:
                          type: string
                          enum:
                            - contract
                            - safety
                            - quality
                        trials:
                          type: integer
                          minimum: 0
                          exclusiveMinimum: true
                          maximum: 10000
                        timeoutMs:
                          type: integer
                          minimum: 0
                          exclusiveMinimum: true
                          maximum: 86400000
                      required:
                        - id
                        - targetId
                        - tags
                        - classification
                        - trials
                        - timeoutMs
                      additionalProperties: false
                  suites:
                    maxItems: 10000
                    type: array
                    items:
                      type: object
                      properties:
                        id:
                          type: string
                          minLength: 1
                          maxLength: 96
                          pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        drills:
                          maxItems: 10000
                          type: array
                          items:
                            type: string
                            minLength: 1
                            maxLength: 96
                            pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        tags:
                          maxItems: 10000
                          type: array
                          items:
                            type: string
                            minLength: 1
                            maxLength: 96
                            pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$
                        trials:
                          type: integer
                          minimum: 0
                          exclusiveMinimum: true
                          maximum: 10000
                        concurrency:
                          type: integer
                          minimum: 0
                          exclusiveMinimum: true
                          maximum: 64
                        retries:
                          type: integer
                          minimum: 0
                          maximum: 10
                      required:
                        - id
                        - drills
                        - tags
                        - concurrency
                        - retries
                      additionalProperties: false
                required:
                  - schemaVersion
                  - worldId
                  - defaultSeed
                  - drills
                  - suites
                additionalProperties: false
              createdAtMs:
                type: integer
                minimum: -9007199254740991
                maximum: 9007199254740991
            required:
              - schemaVersion
              - organizationId
              - projectId
              - buildHash
              - artifactDigest
              - engineVersion
              - packageLockHash
              - definitionIndex
              - createdAtMs
            additionalProperties: false
        nextCursor:
          type: string
          minLength: 1
          maxLength: 2048
      required:
        - 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
  securitySchemes:
    controlCredential:
      type: http
      scheme: bearer
      description: Opaque control credential

````