> ## Documentation Index > Fetch the complete documentation index at: https://docs.trypost.it/llms.txt > Use this file to discover all available pages before exploring further. # List free queue slots > Lists the channel's next free queue slots, soonest first: at most 30, within the next 90 days, and more than a minute away. A slot is taken when a scheduled post (queued or custom time) or a queue request pending approval holds it. Pass one as `queue_slot` on `POST /posts` or as `slot_at` on `PUT /channels/{account}/queue/slot`. Empty when the channel has no posting times. ## OpenAPI ````yaml /openapi.json get /channels/{account}/queue/slots openapi: 3.1.0 info: title: TryPost API version: 2.0.0 description: >- REST API for TryPost. Authenticate with a workspace API key as a Bearer token. servers: - url: https://app.trypost.it/api description: TryPost Cloud security: - bearerAuth: [] tags: - name: Posts description: Create, read, update, delete and preview posts. - name: Post notes description: Internal notes on a post, visible to workspace members. - name: Approvals description: Approve or reject posts waiting for approval. - name: Recurrence description: Make a post repeat on a schedule. - name: Media and uploads description: Upload files and attach media to posts. - name: Social accounts description: Connected social accounts and their network-specific options. - name: Channels description: A channel's posting schedule and queue. - name: Ideas description: Ideas on the Create board. - name: Idea stages description: The groups (columns) of the ideas board. - name: Analytics description: Workspace and channel insights. - name: Labels description: Labels to organize posts and ideas. - name: Signatures description: Reusable text to append to posts. - name: Workspace description: The workspace the API key belongs to. - name: API keys description: Personal API keys for this workspace. - name: Webhooks description: Outgoing webhooks and their delivery logs. - name: Repurposes description: Automations that republish videos posted outside TryPost. - name: Platform description: Platform capabilities and content types. paths: /channels/{account}/queue/slots: parameters: - $ref: '#/components/parameters/AccountId' get: tags: - Channels summary: List free queue slots description: >- Lists the channel's next free queue slots, soonest first: at most 30, within the next 90 days, and more than a minute away. A slot is taken when a scheduled post (queued or custom time) or a queue request pending approval holds it. Pass one as `queue_slot` on `POST /posts` or as `slot_at` on `PUT /channels/{account}/queue/slot`. Empty when the channel has no posting times. operationId: listFreeQueueSlots responses: '200': description: Free slots as UTC instants. content: application/json: schema: type: object properties: slots: type: array maxItems: 30 items: type: string format: date-time description: ISO 8601, UTC (`Z`). example: slots: - '2026-10-09T12:00:00Z' - '2026-10-12T12:00:00Z' - '2026-10-13T12:00:00Z' '401': $ref: '#/components/responses/Unauthorized' '402': $ref: '#/components/responses/PaymentRequired' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '429': $ref: '#/components/responses/TooManyRequests' components: parameters: AccountId: name: account in: path required: true description: >- Social account (channel) id. An account of another workspace returns `404`. schema: type: string format: uuid example: 9c8b7a65-4d3e-4f2a-8b1c-0d9e8f7a6b54 responses: Unauthorized: description: >- Missing, invalid, revoked or expired API key. Bodies: `Unauthenticated.` (no key, or a key that is invalid or revoked), `Token expired.` (past its `expires_at`), `Token not found.` and `No workspace selected.` (the key is no longer bound to a workspace). content: application/json: schema: $ref: '#/components/schemas/ErrorBody' example: message: Unauthenticated. PaymentRequired: description: >- TryPost Cloud only: the workspace's account has no active subscription or trial. Body: `{"message": "Active subscription required."}`. content: application/json: schema: $ref: '#/components/schemas/ErrorBody' example: message: Active subscription required. Forbidden: description: >- The request is not allowed. API keys work only for workspace admins (the account owner or a member marked as admin): otherwise every request returns `Insufficient workspace permissions.`. Other bodies: `Workspace access denied.` (the key's user left the workspace) and `Personal access token required.` (an MCP OAuth token was sent) and `This action is unauthorized.` (the note belongs to another member). content: application/json: schema: $ref: '#/components/schemas/ErrorBody' NotFound: description: The resource does not exist in this workspace. content: application/json: schema: $ref: '#/components/schemas/ErrorBody' TooManyRequests: description: 'Rate limit exceeded. Limits: 60 requests per minute per workspace.' headers: Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/RateLimitErrorBody' schemas: ErrorBody: type: object properties: message: type: string RateLimitErrorBody: type: object properties: name: type: string const: rate_limit_exceeded message: type: string examples: - Rate limit exceeded. Please retry after 30 seconds. securitySchemes: bearerAuth: type: http scheme: bearer description: Workspace API key from Settings → API Keys. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.