> ## 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. # Get safe metadata for one immutable build ## OpenAPI ````yaml /api-reference/openapi.json get /v1/projects/{projectId}/builds/{buildHash} 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: [] paths: /v1/projects/{projectId}/builds/{buildHash}: get: summary: Get safe metadata for one immutable build operationId: builds.get parameters: - name: projectId in: path required: true schema: type: string pattern: ^prj_[0-9a-z]{12,32}$ - name: buildHash in: path required: true schema: type: string pattern: ^sha256:[0-9a-f]{64}$ responses: '200': description: Immutable build content: application/json: schema: $ref: '#/components/schemas/HostedBuild' default: description: Canonical error envelope content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' components: schemas: HostedBuild: type: object properties: artifactState: type: string enum: - available - deleting - deleted schemaVersion: type: number enum: - 1 organizationId: type: string pattern: ^org_[0-9a-z]{12,32}$ 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})$ toolInstances: minItems: 1 maxItems: 256 type: array items: type: object properties: packageId: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ instanceId: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ required: - packageId - instanceId additionalProperties: false 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]+)*$ instanceId: 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 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 ````