What you can build
The v1 API covers the whole conversation lifecycle:
- Send text and approved templates, start or reply to conversations
- Create, update and search contacts with tags and opt-in
- Read conversations and messages, with cursor pagination
- Connect WhatsApp numbers, sync templates, and draft chatbot flows
- Receive signed webhook events for messages, statuses and more
Made for AI agents too
Point Claude Code or any MCP client at womnibot.com/mcp, or give an agent womnibot.com/llms.txt. A person approves access in the browser; the agent gets exactly the permissions they tick.
Documented and predictable
An OpenAPI 3.1 spec, consistent error codes, rate-limit headers and Idempotency-Key support. Read the docs at womnibot.com/developers.
Frequently asked questions
- Is there an OpenAPI spec?
- Yes, at womnibot.com/api/v1/openapi.json. Import it into Postman, Insomnia or a code generator.
- How do I authenticate?
- With a scoped API key (Authorization: Bearer wmb_live_…) created by a workspace admin, or through the OAuth flow of the MCP server.
- Can I build my own chatbot with the API?
- Yes. Subscribe to message webhooks, decide the reply in your code and send it with the messages endpoint.
Start answering customers on WhatsApp today
Free plan. No markup on Meta fees. Set up yourself, or let your AI assistant do it.
Start free