# Contact Button

> The contact and lead-generation layer between people and AI agents.

## Start here

- [Contact Button developer portal](https://agents.contactbutton.com/developers): API quickstart, authentication, scoped permissions, OpenAPI, MCP, webhooks, and testing guidance.
- [Agent instructions](https://agents.contactbutton.com/agents.md): Product boundaries, safe setup workflow, and Telnyx requirements.
- [Agent skill](https://agents.contactbutton.com/.well-known/agent-skills/contact-button/SKILL.md): Portable instructions for coding agents.
- [Documentation](https://docs.contactbutton.com): Human- and agent-readable build guides.
- [OpenAPI](https://docs.contactbutton.com/openapi.yaml): Complete REST contract.
- [Authentication and scoped API keys](https://docs.contactbutton.com/authentication): Bearer-token setup and least-privilege permissions.
- [Contact Button webhooks](https://docs.contactbutton.com/guides/webhooks): Signed form events and delivery behavior.
- [MCP metadata](https://agents.contactbutton.com/mcp.json): Shared MCP server connection details.
- [API catalog](https://agents.contactbutton.com/.well-known/api-catalog): Machine-readable API entry points.
- [Public profile index](https://button.contact/llms.txt): Discover indexable Contact Button Pages.

## Product surfaces

- Pages and custom domains
- Contact Buttons, apps, and structured forms
- Bookings and callback requests
- Newsletter subscriptions
- Human and agent chat
- Public knowledge and cited articles
- Telnyx-powered calling, voice, and SMS

Telnyx is optional unless the workspace uses phone or SMS features. Read https://docs.contactbutton.com/guides/telnyx before connecting it or purchasing a number.