Integration Overview

Overview

Stable's API allows you to provision and manage Address, Mailroom, Registered Agent and Compliance services within your account.

• Address: create and manage Virtual Address.
• Mailroom: read, organize, and take physical actions on mail items received at your address.
• Registered agent: manage Registered Agent services and legal entities, and programmatically receive official notices.
• State compliance: place state filings such as annual reports or track standings for a business entity.

If you'd like to offer any of Stable's services to your customers within your own product, see Stable for Platforms.

Ways to use the API

• REST API: create an API key and send requests to https://api.usestable.com/v1/.
• Webhooks: receive real-time events when something notable happens.
• AI and MCP: Connect an AI agent, such as Claude or Cursor, to the API using MCP.

Conventions

See API Patterns for a full list of conventions you'll see in this API. At a high level:

• Authentication: send a valid API key in the x-api-key header.

• Pagination and Filtering: the Stable API implements Relay-style cursor-based pagination.
• Webhooks: use webhooks to react to events and reduce polling.
• Errors: how to handle error codes.

Ready to start?

Visit our Quickstart to make your first request.