> ## Documentation Index > Fetch the complete documentation index at: https://leonar.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Create or link the project's default sequence ## OpenAPI ````yaml /openapi.yaml post /projects/{id}/sequences openapi: 3.0.3 info: title: Leonar API description: > REST API for accessing and managing workspace data in Leonar CRM. ## Authentication All API requests require a Bearer token in the Authorization header: ``` Authorization: Bearer leo_xxxxx ``` API keys can be created and managed in Settings > API. ## Rate limiting - **2000 requests per hour by default**, configurable per workspace and shared by all API keys owned by the same user - Rate limit headers are included in all responses ## Pagination List endpoints support pagination via `limit` and `offset` query parameters. version: 1.0.0 contact: name: Leonar Support url: https://leonar.ai email: support@leonar.ai servers: - url: https://app.leonar.app/api/v1 description: Production security: - BearerAuth: [] tags: - name: Contacts description: Manage contacts in your workspace - name: Companies description: Manage companies and their relationships - name: Deals description: Track and manage sales deals - name: Deal Pipelines description: View deal pipeline configurations - name: Projects description: Organize recruiting projects - name: Pipeline Entries description: Manage candidates in project pipelines - name: Tasks description: Track to-dos and follow-ups - name: Tags description: Organize resources with tags - name: Notes description: Manage notes on contacts, companies, deals, and projects - name: Sequences description: Automate outreach campaigns - name: Conversations description: View conversations across channels - name: Messages description: Send messages via email, LinkedIn, or WhatsApp - name: Enrichment description: Find emails and phone numbers for contacts - name: Sourcing description: Search and import candidates - name: Connected Accounts description: View linked LinkedIn accounts paths: /projects/{id}/sequences: post: tags: - Projects - Sequences summary: Create or link the project's default sequence operationId: create-or-link-project-sequence parameters: - $ref: '#/components/parameters/projectId' requestBody: required: true content: application/json: schema: oneOf: - type: object required: - sequence_id properties: sequence_id: type: string format: uuid additionalProperties: false - type: object required: - sequence properties: sequence: $ref: '#/components/schemas/SequenceCreate' additionalProperties: false responses: '200': description: Existing sequence linked '201': description: Sequence created and linked '404': $ref: '#/components/responses/NotFound' '409': description: Project already has a linked sequence components: parameters: projectId: name: id in: path required: true schema: type: string format: uuid description: Project ID schemas: SequenceCreate: type: object required: - name properties: name: type: string maxLength: 200 status: type: string enum: - draft default: draft priority: type: string enum: - normal - high default: normal mode: type: string enum: - simple - advanced default: simple project_id: type: string format: uuid owner_ids: type: array minItems: 1 maxItems: 50 items: type: string format: uuid schedule_config: type: object additionalProperties: true steps: type: array maxItems: 50 items: $ref: '#/components/schemas/SequenceCreateStep' SequenceCreateStep: type: object properties: client_key: type: string maxLength: 100 description: Temporary key for referencing new steps from `parent_step_id`. type: type: string enum: - linkedin_invitation - linkedin_message - linkedin_inmail - linkedin_voice - linkedin_profile_view - email - whatsapp - call - email_enrichment - phone_enrichment - manual_step default: email name: type: string maxLength: 200 subject: type: string maxLength: 500 body: type: string maxLength: 50000 content_template: type: object additionalProperties: true description: >- For `linkedin_voice`, must contain exactly one audio attachment with `kind: voice_note`. delay_days: type: integer minimum: 0 maximum: 365 default: 0 delay_hours: type: integer minimum: 0 maximum: 23 default: 0 execution_mode: type: string enum: - automatic - manual default: automatic sender_ids: type: array maxItems: 25 items: type: string format: uuid parent_step_id: type: string nullable: true description: A `client_key` from this request. branch_condition: type: object nullable: true additionalProperties: false required: - type - branch properties: type: type: string minLength: 1 maxLength: 100 branch: type: string enum: - 'yes' - 'no' after_days: type: integer minimum: 0 maximum: 365 entry_conditions: type: object additionalProperties: true nullable: true Error: type: object properties: error: type: object properties: code: type: string enum: - invalid_api_key - insufficient_scope - rate_limit_exceeded - validation_error - not_found - internal_error - billing_required - plan_upgrade_required description: > Error codes: - `invalid_api_key` — API key is missing, malformed, or revoked - `insufficient_scope` — API key lacks the required scope for this endpoint - `rate_limit_exceeded` — Too many requests (2000/hour) - `validation_error` — Request body or parameters failed validation - `not_found` — The requested resource does not exist - `internal_error` — Unexpected server error - `billing_required` — Workspace has no active subscription - `plan_upgrade_required` — Current plan does not include this feature message: type: string description: Human-readable error description responses: NotFound: description: Resource not found content: application/json: schema: $ref: '#/components/schemas/Error' example: error: code: not_found message: Resource not found securitySchemes: BearerAuth: type: http scheme: bearer description: API key starting with `leo_` ````