> ## Documentation Index > Fetch the complete documentation index at: https://docs.kejue.co/llms.txt > Use this file to discover all available pages before exploring further. # Bulk Create Contacts > Bulk create contacts (max 1000 per request). Optionally skip duplicates based on phone, email, or whatsapp_number. ## OpenAPI ````yaml /openapi.json post /contacts/bulk openapi: 3.1.0 info: title: Kejue Public API description: >- The Kejue Public API lets you programmatically create calls, manage campaigns, and retrieve call results. ## Authentication All requests require an API key passed in the `X-API-Key` header: ``` X-API-Key: kej_live_... ``` API keys are scoped to a workspace. Create and manage keys from the Kejue dashboard under **Settings → API Keys**. ## Base URL ``` https://api.kejue.co/api/v1 ``` ## Rate Limits API requests are rate-limited per workspace. If you exceed the limit you'll receive a `429 Too Many Requests` response. ## Errors All error responses follow a consistent format: ```json { "error": "Human-readable message", "code": "ERROR_CODE", "details": {} } ``` version: 1.0.0 servers: - url: https://api.kejue.co/api/v1 description: Production security: - ApiKeyAuth: [] tags: - name: Agents description: >- Create and manage AI agents (personas). Each agent has a name, prompt, voice configuration, and optional tools. Agents are the core building block — attach voice configs, tools, and use them to make calls. - name: Calls description: >- Create outbound calls, retrieve call details and transcripts, and list calls with filtering. Each call is associated with a contact and optionally an agent and campaign. - name: Persona Calls description: >- Create calls with the full agent configuration pre-loaded. Applies the complete settings hierarchy (workspace → agent → campaign → overrides) with all agent tools, tags, scoring, and webhooks inherited automatically. - name: Contacts description: >- Create and manage contacts. Contacts represent the people your agents call. Each contact has a phone number, name, and optional metadata. Supports single creation, bulk import, and CSV upload. - name: Campaigns description: >- Create and manage calling campaigns. Campaigns let you batch-call a list of contacts with shared settings, scheduling, and retry logic. - name: Tools description: >- Create and manage custom HTTP tools that agents can invoke during calls. Tools let agents fetch data, trigger actions, or integrate with external systems mid-conversation. Each tool supports three parameter types: - **Dynamic parameters** — filled by the AI at runtime (visible to the AI) - **Static parameters** — fixed values sent with every invocation (hidden from the AI) - **System parameters** — values injected from the execution context at runtime, such as `call_id`, `contact_id`, or `workspace_id` (hidden from the AI) - name: Voices description: List available voices for use in agent voice configurations. - name: Phone Numbers description: List phone numbers available in your workspace for making outbound calls. - name: Webhooks description: >- Create and manage webhook subscriptions. Receive real-time notifications for call events (started, ended, etc.) at your specified URL. - name: Models description: List available AI models for use in agent voice configurations. paths: /contacts/bulk: post: tags: - Contacts summary: Bulk Create Contacts description: |- Bulk create contacts (max 1000 per request). Optionally skip duplicates based on phone, email, or whatsapp_number. operationId: bulk_create_contacts_contacts_bulk_post parameters: [] requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/BulkCreateContacts' responses: '201': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/BulkCreateContactsResponse' '401': description: >- Missing or invalid API key. Pass a workspace API key in the `X-API-Key` header. content: application/json: example: error: Invalid or missing API key code: UNAUTHORIZED details: {} schema: $ref: '#/components/schemas/ErrorResponse' '422': description: Request body or query parameters failed validation. content: application/json: example: error: Validation failed code: VALIDATION_ERROR details: errors: - field: body.name message: Field required type: missing schema: $ref: '#/components/schemas/ErrorResponse' security: - ApiKeyAuth: [] components: schemas: BulkCreateContacts: properties: contacts: items: $ref: '#/components/schemas/CreateContact' type: array maxItems: 1000 title: Contacts description: Contacts to create (max 1000) skip_duplicates: type: boolean title: Skip Duplicates description: Skip contacts with duplicate phone numbers default: true duplicate_field: $ref: '#/components/schemas/DuplicateField' description: Field to check for duplicates default: phone type: object required: - contacts title: BulkCreateContacts description: Bulk create contacts. BulkCreateContactsResponse: properties: created: type: integer title: Created description: Number of contacts successfully created skipped: type: integer title: Skipped description: Number of contacts skipped (duplicates) errors: items: $ref: '#/components/schemas/BulkImportError' type: array title: Errors description: Errors for contacts that failed type: object required: - created - skipped title: BulkCreateContactsResponse description: Bulk create result. ErrorResponse: properties: error: type: string title: Error code: type: string title: Code details: anyOf: - additionalProperties: true type: object - type: 'null' title: Details type: object required: - error - code title: ErrorResponse description: Standard error response. example: code: NOT_FOUND details: contact_id: '123' error: Contact not found CreateContact: properties: phone: anyOf: - type: string - type: 'null' title: Phone description: Phone number (E.164 recommended) whatsapp_number: anyOf: - type: string - type: 'null' title: Whatsapp Number description: WhatsApp number (E.164) email: anyOf: - type: string - type: 'null' title: Email description: Email address first_name: anyOf: - type: string - type: 'null' title: First Name description: First name last_name: anyOf: - type: string - type: 'null' title: Last Name description: Last name company: anyOf: - type: string - type: 'null' title: Company description: Company name job_title: anyOf: - type: string - type: 'null' title: Job Title description: Job title country: anyOf: - type: string - type: 'null' title: Country description: ISO country code timezone: anyOf: - type: string - type: 'null' title: Timezone description: IANA timezone language: anyOf: - type: string - type: 'null' title: Language description: Language code tags: items: type: string type: array title: Tags description: Tags metadata: additionalProperties: true type: object title: Metadata description: Custom key-value metadata type: object title: CreateContact description: Create a contact. All fields optional. DuplicateField: type: string enum: - phone - email - whatsapp_number title: DuplicateField description: Field to check for duplicates during bulk contact import. BulkImportError: properties: index: type: integer title: Index description: Zero-based index of the contact in the request array error: type: string title: Error description: Error message type: object required: - index - error title: BulkImportError description: An error that occurred during bulk import. securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: Workspace API key (e.g. `kej_live_...`) ````