> ## 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. # Admit one capture or file for the pending agent interaction > Requires the current interaction and revision. Maximum 32 files, 64 MiB each and 120 MiB total per run. Returns a same-origin authenticated upload URL; no storage credentials are returned. ## OpenAPI ````yaml /api-reference/openapi.json post /v1/projects/{projectId}/runs/{hostedRunId}/attachments 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}/runs/{hostedRunId}/attachments: post: tags: - runs summary: Admit one capture or file for the pending agent interaction description: >- Requires the current interaction and revision. Maximum 32 files, 64 MiB each and 120 MiB total per run. Returns a same-origin authenticated upload URL; no storage credentials are returned. operationId: runAttachments.begin parameters: - name: projectId in: path required: true schema: type: string pattern: ^prj_[0-9a-z]{12,32}$ - name: hostedRunId in: path required: true schema: type: string pattern: ^hrun_[0-9a-z]{12,32}$ - name: Idempotency-Key in: header required: true schema: type: string minLength: 8 maxLength: 128 pattern: ^[A-Za-z0-9._:-]+$ requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/BeginRunAttachmentRequest' responses: '201': description: Attachment admission and optional byte transfer content: application/json: schema: $ref: '#/components/schemas/RunAttachmentResponse' default: description: Canonical error envelope content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' components: schemas: BeginRunAttachmentRequest: type: object properties: interactionId: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ expectedRevision: type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 attachment: type: object properties: schemaVersion: type: number enum: - 1 kind: type: string enum: - file id: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ name: type: string minLength: 1 maxLength: 128 pattern: ^[A-Za-z0-9][A-Za-z0-9._-]*$ mediaType: type: string minLength: 1 maxLength: 200 bytes: type: integer minimum: 0 maximum: 67108864 hash: type: string pattern: ^sha256:[0-9a-f]{64}$ redaction: type: object properties: status: type: string enum: - not_applied - applied_by_caller note: default: null nullable: true type: string minLength: 1 maxLength: 500 required: - status - note additionalProperties: false required: - schemaVersion - kind - id - name - mediaType - bytes - hash - redaction additionalProperties: false capture: type: object properties: kind: type: string enum: - log - screenshot - video - file policy: type: string enum: - always - retain-on-failure required: - kind - policy additionalProperties: false required: - interactionId - expectedRevision - attachment additionalProperties: false RunAttachmentResponse: type: object properties: attachment: type: object properties: attachmentId: type: string pattern: ^ratt_[a-f0-9]{32}$ projectId: type: string pattern: ^prj_[0-9a-z]{12,32}$ hostedRunId: type: string pattern: ^hrun_[0-9a-z]{12,32}$ interactionId: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ expectedRevision: type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 attachment: type: object properties: schemaVersion: type: number enum: - 1 kind: type: string enum: - file id: type: string minLength: 1 maxLength: 96 pattern: ^[a-z][a-z0-9]*(?:[-_][a-z0-9]+)*$ name: type: string minLength: 1 maxLength: 128 pattern: ^[A-Za-z0-9][A-Za-z0-9._-]*$ mediaType: type: string minLength: 1 maxLength: 200 bytes: type: integer minimum: 0 maximum: 67108864 hash: type: string pattern: ^sha256:[0-9a-f]{64}$ redaction: type: object properties: status: type: string enum: - not_applied - applied_by_caller note: default: null nullable: true type: string minLength: 1 maxLength: 500 required: - status - note additionalProperties: false required: - schemaVersion - kind - id - name - mediaType - bytes - hash - redaction additionalProperties: false capture: type: object properties: kind: type: string enum: - log - screenshot - video - file policy: type: string enum: - always - retain-on-failure required: - kind - policy additionalProperties: false state: type: string enum: - awaiting_upload - uploaded - available - bound - deleted expiresAtMs: type: integer minimum: -9007199254740991 maximum: 9007199254740991 required: - attachmentId - projectId - hostedRunId - interactionId - expectedRevision - attachment - state - expiresAtMs additionalProperties: false upload: type: object properties: method: type: string enum: - PUT uploadUrl: type: string format: uri headers: type: object additionalProperties: type: string authentication: type: string enum: - control expiresAtMs: type: integer minimum: -9007199254740991 maximum: 9007199254740991 required: - method - uploadUrl - headers - authentication - expiresAtMs additionalProperties: false required: - attachment 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 ````