> ## Documentation Index > Fetch the complete documentation index at: https://docs.goosybear.ai/llms.txt > Use this file to discover all available pages before exploring further. # Call posts.create_pieces > Create every post a brief calls for, in one call — 'make this week's posts from Tuesday's episode', 'create three posts for the launch'. Each piece is created with whatever the request already settles — what it is built from, where it goes, its own copy, its time — and gets its board, so a complete request needs no further calls beyond each destination's version. Read posts.plan_context first so slot ids, library ids and destination names are real. It creates drafts only: nothing is published or sent for approval. Not for reading where one piece stands afterwards — that is `posts.api_read_piece`. Every result names the workspace it ran in. Say which workspace the answer is about. When the account has more than one workspace and none is selected, this tool refuses with `workspace_ambiguous` and lists the choices — offer them, never pick one. ## OpenAPI ````yaml /openapi.json post /api/v1/tools/posts.create_pieces openapi: 3.1.0 info: title: Goosy Bear API version: 1.0.0-beta summary: Manage workspace content, projects, Data tables, Pages, library and credits. description: >- BETA. This API is in beta: paths, request shapes and response envelopes may change, and every response carries an `x-goosy-api: beta` header for as long as that is true. A change is additive, or it is deprecated first: a response to a call that uses a deprecated feature carries `Deprecation` and `Sunset` headers, and nothing is removed until at least 90 days after its deprecation. Pin the OpenAPI document you generated against and re-generate when it changes. servers: - url: https://app.goosybear.ai description: Production security: - tenantApiKey: [] paths: /api/v1/tools/posts.create_pieces: post: tags: - posts summary: Call posts.create_pieces description: >- Create every post a brief calls for, in one call — 'make this week's posts from Tuesday's episode', 'create three posts for the launch'. Each piece is created with whatever the request already settles — what it is built from, where it goes, its own copy, its time — and gets its board, so a complete request needs no further calls beyond each destination's version. Read posts.plan_context first so slot ids, library ids and destination names are real. It creates drafts only: nothing is published or sent for approval. Not for reading where one piece stands afterwards — that is `posts.api_read_piece`. Every result names the workspace it ran in. Say which workspace the answer is about. When the account has more than one workspace and none is selected, this tool refuses with `workspace_ambiguous` and lists the choices — offer them, never pick one. operationId: call_posts_create_pieces parameters: - name: x-request-id in: header required: false description: >- Your own id for this request, echoed back and recorded on the audit trail. 1–128 characters from `A–Z a–z 0–9 . _ : -`, starting with a letter or digit; anything else is replaced by a generated id. schema: type: string maxLength: 128 - name: Idempotency-Key in: header required: true description: >- Your key for this write: send the same key when you retry and the first result comes back instead of a second action. Keys are honoured for at least 24 hours. 1–200 visible ASCII characters. Replaces the `idempotency_key` body field, which still works until 2026-12-31; this action needs a key on one of the two, and the header is the one to send. schema: type: string maxLength: 200 requestBody: required: true content: application/json: schema: type: object properties: pieces: type: array items: type: object properties: title: type: string minLength: 1 description: >- What the operator would call this piece. Short and human — it labels the tile on their grid. piece_format: anyOf: - type: string enum: - posts - stories - shorts_clips - long_form - articles - podcast - type: 'null' description: Omit for `posts`. schedule_slot_id: type: - string - 'null' description: >- The open cadence slot from posts.plan_context this piece fills. PREFER THIS: the slot supplies the destinations AND the time, so passing it means you do not pass `platforms` or `scheduled_for` at all. Omit only for a genuinely ad-hoc piece the cadence has no slot for. platforms: anyOf: - type: array items: type: string - type: 'null' description: >- Where this piece publishes. Omit when `schedule_slot_id` is set — the slot's own defaults are the operator's rhythm and restating them is what drifts. Pass ONLY values posts.plan_context listed as electable; anything else is refused. master_content: type: - string - 'null' description: >- The piece's own copy — the canonical version every destination's variant is shaped from. Write it here when the brief gives you enough to; otherwise omit and fill it later with posts.fill_step. source_kind: anyOf: - type: string enum: - video_unit - image - document - scratch - type: 'null' description: >- What this piece is built from. Use `video_unit` with the id from posts.plan_context's finals list when the brief names an episode. `scratch` (the default) means written in the flow and takes NO source_ref. source_ref: type: - string - 'null' description: >- The id of the final named by `source_kind`. Required for every kind but `scratch`, and forbidden for `scratch`. scheduled_for: type: - string - 'null' description: >- When this piece goes out, ISO 8601 UTC. Omit when `schedule_slot_id` is set. Convert the operator's wall-clock intent using the `displayTimeZone` posts.plan_context returned — never assume UTC is their zone. required: - title additionalProperties: false minItems: 1 maxItems: 12 description: >- Every piece the brief asks for, in ONE call. A week of posts is one call, not one call per post. idempotency_key: type: string minLength: 1 maxLength: 200 description: >- Deprecated on REST: send the `Idempotency-Key` header instead. Still accepted until 2026-12-31; if both are sent they must match. workspace: type: string minLength: 1 description: >- Which workspace to run in — its slug. Omit to use your default. With more than one reachable workspace and no default, the call is refused and the choices are listed. required: - pieces additionalProperties: false responses: '200': description: >- The call was admitted and dispatched. `ok` says whether the tool succeeded — a refusal the tool itself produced is still a 200, exactly as it is a successful JSON-RPC result over MCP. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string RateLimit-Limit: description: Requests this key may make in a rolling minute. schema: type: integer minimum: 1 RateLimit-Remaining: description: Requests left in the current rolling minute. schema: type: integer minimum: 0 RateLimit-Reset: description: Whole seconds until the window frees more requests. schema: type: integer minimum: 1 x-goosy-tool-error: description: >- `true` when a boundary step refused the call — workspace resolution failed or could not be read. A tool that ran and returned its own typed `ok: false` reports `false` here. **Branch on `ok` in the body for the outcome; this header is the transport-level hint.** schema: type: string enum: - 'true' - 'false' content: application/json: schema: oneOf: - type: object description: The tool ran and answered. properties: ok: type: boolean const: true created: type: array items: type: object properties: index: type: integer minimum: 0 description: The piece's position in the request, from 0. piece_id: type: string run_id: type: string description: The piece's workflow run. required: - index - piece_id - run_id additionalProperties: false refused: type: array items: type: object properties: index: type: integer minimum: 0 code: type: string message: type: string required: - index - code - message additionalProperties: false replayed: type: boolean description: >- True when this is the first result of an earlier call with the same idempotency_key, returned without running anything again. workspace: type: string description: The slug of the workspace this call ran in. working_in: type: object properties: label: type: string description: 'The chip words — e.g. "working in: Acme Main".' note: type: string description: >- Why this workspace — e.g. "your default", "this call only". workspace: type: string description: The resolved workspace's slug. source: type: string enum: - call-override - key-pin - stored-default - sole-reachable description: >- Which rung of the R7 precedence resolved the workspace. required: - label - note - workspace - source additionalProperties: false description: >- Which workspace this call ran in, and how that was decided. Present on every workspace-scoped result. required: - ok - created - refused - replayed - working_in - workspace - $ref: '#/components/schemas/ToolRefusal' '400': description: >- The request could not be used: the body is present but not a JSON object (`tenant_api.malformed_body`); it is a top-level array carrying more messages than this endpoint accepts (`tenant_mcp.batch_too_large`); or the `Idempotency-Key` header is malformed (`tenant_api.idempotency_key_invalid`), disagrees with the body's `idempotency_key` (`tenant_api.idempotency_key_conflict`), or was sent to an action that cannot replay a retry (`tenant_api.idempotency_unsupported`). Nothing ran. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string Deprecation: description: >- RFC 9745: this refusal's nested `error` object is deprecated, since this instant (`@`). schema: type: string Sunset: description: >- RFC 8594: the nested `error` object may be removed after this date (2026-12-31). schema: type: string Link: description: The page that says what to read instead (`rel="deprecation"`). schema: type: string RateLimit-Limit: description: Requests this key may make in a rolling minute. schema: type: integer minimum: 1 RateLimit-Remaining: description: Requests left in the current rolling minute. schema: type: integer minimum: 0 RateLimit-Reset: description: Whole seconds until the window frees more requests. schema: type: integer minimum: 1 content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: >- No bearer credential, or one that did not resolve. Deliberately ONE undifferentiated answer for absent / unknown / revoked / expired, so the endpoint is never an oracle over the key space. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string Deprecation: description: >- RFC 9745: this refusal's nested `error` object is deprecated, since this instant (`@`). schema: type: string Sunset: description: >- RFC 8594: the nested `error` object may be removed after this date (2026-12-31). schema: type: string Link: description: The page that says what to read instead (`rel="deprecation"`). schema: type: string content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: >- The credential is good but the surface is not open to it — the platform or account API switch is off, or the holder lacks the `api.access` capability. The `code` says which. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string Deprecation: description: >- RFC 9745: this refusal's nested `error` object is deprecated, since this instant (`@`). schema: type: string Sunset: description: >- RFC 8594: the nested `error` object may be removed after this date (2026-12-31). schema: type: string Link: description: The page that says what to read instead (`rel="deprecation"`). schema: type: string content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: >- No such tool. The body names no tool and is identical for every unrecognised name. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string Deprecation: description: >- RFC 9745: this refusal's nested `error` object is deprecated, since this instant (`@`). schema: type: string Sunset: description: >- RFC 8594: the nested `error` object may be removed after this date (2026-12-31). schema: type: string Link: description: The page that says what to read instead (`rel="deprecation"`). schema: type: string RateLimit-Limit: description: Requests this key may make in a rolling minute. schema: type: integer minimum: 1 RateLimit-Remaining: description: Requests left in the current rolling minute. schema: type: integer minimum: 0 RateLimit-Reset: description: Whole seconds until the window frees more requests. schema: type: integer minimum: 1 content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Over this key's per-minute cap. Carries `Retry-After` and `error.retry_after_seconds`. headers: x-goosy-api: description: Present while this API is in beta; the value is `beta`. schema: type: string const: beta x-request-id: description: >- This request's id: the `x-request-id` you sent when it was well formed, otherwise one generated for you. Quote it to support; it is recorded on every audit row the call wrote. schema: type: string Deprecation: description: >- RFC 9745: this refusal's nested `error` object is deprecated, since this instant (`@`). schema: type: string Sunset: description: >- RFC 8594: the nested `error` object may be removed after this date (2026-12-31). schema: type: string Link: description: The page that says what to read instead (`rel="deprecation"`). schema: type: string RateLimit-Limit: description: Requests this key may make in a rolling minute. schema: type: integer minimum: 1 RateLimit-Remaining: description: Requests left in the current rolling minute. schema: type: integer minimum: 0 RateLimit-Reset: description: Whole seconds until the window frees more requests. schema: type: integer minimum: 1 Retry-After: description: Whole seconds to wait before retrying. schema: type: integer minimum: 1 content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: ToolRefusal: type: object properties: ok: type: boolean const: false code: type: string description: >- The typed reason — e.g. `workspace_ambiguous`, `invalid_arguments`, or the tool's own failure code. message: type: string description: A sentence a person can act on. workspaces: type: array items: type: string description: 'On a workspace refusal: the slugs this key may pass as `workspace`.' issues: type: array items: type: object properties: path: type: string message: type: string required: - path - message additionalProperties: false description: 'On `invalid_arguments`: which fields failed, and why.' required: - ok - code - message additionalProperties: false description: A call that was admitted and dispatched, and did not succeed. Error: type: object properties: ok: type: boolean const: false code: type: string description: >- The typed refusal code — e.g. `tenant_mcp.surface_disabled`, `tenant_mcp.rate_limited`. message: type: string description: A sentence a person can act on. retry_after_seconds: type: number description: 'On a 429: whole seconds to wait. Mirrors `Retry-After`.' error: type: object properties: code: type: string message: type: string retry_after_seconds: type: number required: - code - message additionalProperties: false description: >- Deprecated: the same values as the top-level fields, kept until 2026-12-31. Read `code` and `message` at the top level. required: - ok - code - message - error additionalProperties: false description: >- A request the boundary refused before dispatching anything. The same shape the MCP endpoint answers its own refusals with, and the same top-level fields a dispatched call's refusal carries, so one client branch covers both. securitySchemes: tenantApiKey: type: http scheme: bearer description: >- An API key minted at Settings › API & MCP. Send it as `Authorization: Bearer `. A key carries its holder's own permissions, resolved on every call — revoking a membership closes the key's reach immediately. Keep it in an environment variable (`GOOSY_API_KEY`), never in a committed file. ````