> ## 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. # Propose variations > Propose a batch of variations of a proven format. Sigma's `vary_format`: a broken-down reference (the Format) x the axes to vary -> N variants in this project, under one batch quote at its ceiling (N x the per-variant price). Never starts on its own: send `approval.approval` to POST /v1/sigma/approvals. The run reserves only the variants an identical earlier output does not cover, refunds a variant that fails, and makes them in the background; follow it with GET /v1/projects/{projectId}/variations/{batchId}. ## OpenAPI ````yaml /openapi.json post /v1/projects/{projectId}/variations 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/projects/{projectId}/variations: post: tags: - Projects summary: Propose variations description: >- Propose a batch of variations of a proven format. Sigma's `vary_format`: a broken-down reference (the Format) x the axes to vary -> N variants in this project, under one batch quote at its ceiling (N x the per-variant price). Never starts on its own: send `approval.approval` to POST /v1/sigma/approvals. The run reserves only the variants an identical earlier output does not cover, refunds a variant that fails, and makes them in the background; follow it with GET /v1/projects/{projectId}/variations/{batchId}. operationId: variations.propose parameters: - name: projectId in: path required: true description: The project id. schema: type: string minLength: 1 maxLength: 200 description: The project id. - name: idempotency-key in: header required: true description: >- Required stable id for this request; reuse it after a timeout to receive the same answer. schema: type: string minLength: 1 maxLength: 255 description: >- Required stable id for this request; reuse it after a timeout to receive the same answer. requestBody: required: true content: application/json: schema: type: object properties: referenceAssetId: type: string minLength: 1 maxLength: 200 description: >- The broken-down reference whose breakdown is the Format (break a reference down first with a Sigma turn or the web app). maker: description: 'What each variant is: `script` (the default).' type: string enum: - script count: type: integer minimum: 1 maximum: 1000 description: >- How many variants (1-1000); capped at the distinct combinations of the axes. axes: type: object properties: hooks: description: Hooks to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One hook. angles: description: Angles to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One angle. presenters: description: Presenters to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One presenter. voices: description: Voices to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One voice. languages: description: Languages to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One language. aspects: description: Aspects to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One aspect. products: description: Products to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One product. music: description: Music directions to vary over. maxItems: 50 type: array items: type: string minLength: 1 maxLength: 300 description: One music direction. additionalProperties: false description: >- The values to vary, one list per axis; give at least one. Each variant takes one value from every listed axis. threadId: description: Continue this Sigma conversation instead of starting one. type: string minLength: 1 maxLength: 200 required: - referenceAssetId - count - axes additionalProperties: false example: referenceAssetId: cnt_8f3e2a71 count: 6 axes: hooks: - You are overpaying for subscriptions you forgot about. - I found $43 a month in my bank statement in two minutes. - Your budget app is lying to you about one number. angles: - first-job budgeting - family household budget responses: '200': description: Success. content: application/json: schema: type: object properties: success: type: boolean const: true threadId: type: string description: The Sigma conversation the proposal is recorded in. messageId: type: string projectId: description: >- Where it runs; null for a workspace conversation until it is approved. type: - string - 'null' approval: type: object properties: tool: type: string summary: type: string description: Exactly what will change, as the web card shows it. url: type: string description: Approve it in the web app instead. credits: description: The quoted price in credits. type: integer minimum: -9007199254740991 maximum: 9007199254740991 unavailable: description: Why it cannot run yet. type: string approval: description: Signed reference for POST /v1/sigma/approvals. type: string autoApproved: description: >- The workspace's cost threshold already ran it; no approval needed. type: object properties: credits: type: number result: type: object properties: {} additionalProperties: {} required: - credits - result additionalProperties: {} required: - tool - summary - url additionalProperties: {} links: type: object properties: thread: type: string required: - thread additionalProperties: {} required: - success - threadId - messageId - projectId - approval - links 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.