> ## Documentation Index > Fetch the complete documentation index at: https://docs.sigmora.org/llms.txt > Use this file to discover all available pages before exploring further. # Send a turn > Talk to Sigma, the editor: ask, edit a project, or propose paid work. One conversation turn with the same agent as the web editor. Without threadId it starts a thread that later turns continue. Review mode returns each composition edit under proposals; agentic lands free, reversible edits and returns their turnIds under edits. Paid work is never run here: it is listed under approvals with the link where it is approved. Free on Auto; a metered model pick is reserved and settled from measured usage. ## OpenAPI ````yaml /openapi.json post /v1/sigma/turns openapi: 3.1.0 info: title: Sigmora API version: 1.0.0 description: >- The priced, versioned public API. Every call authenticates with a workspace API key (`Authorization: Bearer sk_live_…`), names the project it files its output under, and reports what it cost. `GET /v1/capabilities` answers what this deployment can serve right now and at what price; anything it reports as unavailable answers 503 `capability_unavailable` rather than 404. servers: - url: https://api.sigmora.org security: - bearerAuth: [] tags: - name: Meta description: What this deployment serves, what it costs, and what you have spent. - name: Projects description: The container every capability files its output under. - name: Sessions description: Durable bindings between an external harness session and one project. - name: Assets description: 'Project media: direct-to-storage uploads, imports, ingest and transcripts.' - name: Jobs description: Where every asynchronous capability is collected, whatever produced it. - name: Text description: Scripts, research, articles, translation and question sets. - name: Video description: Narrated renders, footage edits, shorts and moment selection. - name: UGC description: >- Creator-led vertical videos: AI creators, their faces and voices, frames and clips. - name: Editing description: >- Sigma, the editor: conversational turns, granular transcript edits, approvals. - name: 3D description: Animated 3D renders from a description or a photograph. - name: Image description: Thumbnails, sized for the platform they are posted to. - name: Audio description: Generated music and audio engineering in Audiotool projects. - name: Publishing description: Connected destinations and queued posts. - name: Webhooks description: Signed, at-least-once delivery of job and publishing events. - name: Workflows description: Context snapshots, versioned recipes, costed proposals and their runs. - name: Agents description: Describe an outcome and let a bounded plan of capabilities run. - name: Research description: >- Observed hooks, creator outliers and production briefs from saved analyses. - name: Themes description: The canonical content taxonomy, and the niche profiles built on it. - name: Signals description: Evidence-backed trends and scored viral content. - name: Discovery description: Compiled watch plans, their runs, and source freshness. - name: Watchlist description: 'Accounts you watch: their usual reach and the posts that beat it.' - name: Performance description: Your own channels' videos against their usual, and fixes to live videos. - name: Autopilot description: The durable trend-to-distribution workflow and its checkpoints. - name: Campaigns description: Distribution records shared by the API, the dashboard and autopilot. - name: Brands description: >- Cross-platform identities with their own voice, rules and publishing commitments. - name: Products description: What a campaign promotes. paths: /v1/sigma/turns: post: tags: - Editing summary: Send a turn description: >- Talk to Sigma, the editor: ask, edit a project, or propose paid work. One conversation turn with the same agent as the web editor. Without threadId it starts a thread that later turns continue. Review mode returns each composition edit under proposals; agentic lands free, reversible edits and returns their turnIds under edits. Paid work is never run here: it is listed under approvals with the link where it is approved. Free on Auto; a metered model pick is reserved and settled from measured usage. operationId: sigma.turns.create parameters: - name: idempotency-key in: header required: true description: >- Required stable id for this turn; reuse it after a timeout to receive the same answer. schema: type: string minLength: 1 maxLength: 255 description: >- Required stable id for this turn; reuse it after a timeout to receive the same answer. requestBody: required: true content: application/json: schema: type: object properties: message: type: string minLength: 1 maxLength: 4000 description: What the person asked. threadId: description: Continue this conversation (threadId from an earlier turn). type: string minLength: 1 maxLength: 200 projectId: description: The project to work in. Implied by a project thread. type: string minLength: 1 maxLength: 200 mode: default: review description: >- review: edits come back as proposals to apply. agentic: free, reversible edits land at once, each with a turnId to revert. type: string enum: - review - agentic assetIds: default: [] description: Project media uploaded for this turn. maxItems: 8 type: array items: type: string minLength: 1 maxLength: 200 mark: description: >- Mark-to-Fix: point the message at one frame; the message is the note on it. type: object properties: atSec: description: Editor-clock second of the frame. type: number minimum: 0 maximum: 86400 region: description: >- The box, 0..1 from the frame's top-left. Absent means the whole frame. type: object properties: x: type: number minimum: 0 maximum: 1 description: >- Left edge, as a fraction of the frame width (0 is the left side). 'y': type: number minimum: 0 maximum: 1 description: >- Top edge, as a fraction of the frame height (0 is the top). w: type: number minimum: 0 maximum: 1 description: Width, as a fraction of the frame width. h: type: number minimum: 0 maximum: 1 description: Height, as a fraction of the frame height. required: - x - 'y' - w - h additionalProperties: false stillAssetId: description: >- A project image of that frame (for chat, the uploaded picture). type: string minLength: 1 maxLength: 200 additionalProperties: false required: - message additionalProperties: false example: message: Remove the ums and make the intro under ten seconds. projectId: prj_9x2a4c mode: review responses: '200': description: Success. content: application/json: schema: type: object properties: success: type: boolean const: true threadId: type: string messageId: type: string projectId: type: - string - 'null' mode: type: string enum: - review - agentic reply: type: string edits: type: array items: type: object properties: turnId: type: string summary: type: string projectId: type: string compositionId: type: string revisionId: type: string required: - turnId - summary - projectId - compositionId - revisionId additionalProperties: {} proposals: type: array items: type: object properties: summary: type: string proposal: type: object propertyNames: type: string additionalProperties: {} required: - summary - proposal additionalProperties: {} refusals: type: array items: type: string approvals: type: array items: type: object properties: tool: type: string summary: type: string url: type: string credits: type: integer minimum: -9007199254740991 maximum: 9007199254740991 modelLabel: type: string unavailable: type: string approval: description: Signed reference for POST /v1/sigma/approvals. type: string required: - tool - summary - url additionalProperties: {} warnings: type: array items: type: string links: type: object properties: thread: type: string required: - thread additionalProperties: {} billing: anyOf: - type: object properties: status: type: string creditsCharged: type: number required: - status - creditsCharged additionalProperties: {} - type: 'null' required: - success - threadId - messageId - projectId - mode - reply - edits - proposals - refusals - approvals - warnings - links - billing additionalProperties: {} '400': description: 'Failure. `code` is one of: invalid_request.' content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: 'Failure. `code` is one of: unauthorized.' content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: 'Failure. `code` is one of: insufficient_credits, budget_capped.' content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: 'Failure. `code` is one of: forbidden, origin_not_allowed.' content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: 'Failure. `code` is one of: not_found.' content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: 'Failure. `code` is one of: conflict.' content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: 'Failure. `code` is one of: rate_limited.' content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: 'Failure. `code` is one of: upstream_error, internal_error.' content: application/json: schema: $ref: '#/components/schemas/Error' '503': description: >- Failure. `code` is one of: capability_unavailable, upstream_unavailable. content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: Error: type: object required: - success - error - code properties: success: const: false error: type: string description: >- Human-readable. Copy may change between releases — do not match on it. code: type: string enum: - invalid_request - unauthorized - forbidden - origin_not_allowed - not_found - conflict - payload_too_large - insufficient_credits - budget_capped - content_not_cleared - rate_limited - capability_unavailable - upstream_unavailable - upstream_error - internal_error description: Stable machine-readable cause. Branch on this. details: description: Optional structured context, e.g. the credits shortfall. requestId: type: string description: >- Identifies this request in our logs. Include it when you contact support. timestamp: type: string format: date-time description: When the failure was produced. securitySchemes: bearerAuth: type: http scheme: bearer description: A workspace API key. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.