Guides

Introduction

Build with Stable

Use Stable's API to manage addresses, physical mail, registered agents, and state compliance for your business or your customers.

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Addresses and physical mail

Manage physical mail items and build integrations and automations.

Registered agents and compliance

Manage registered agents and place state filings for business entities.

Integrate Stable into your product

White-label Stable's address and compliance services in your own product.


API essentials

Learn about common patterns in the Stable API.

AuthenticationCreate and use API keysWebhooksGet notified when events occurPagination and filteringPage through listsErrorsUnderstand error codesIdempotencyRetry requests safelyLimitsUnderstand request limitsAI and MCPUse LLMs with your Stable account

LLM? Read llms.txt and openapi.json.


Recipes

Address

Create real street addresses, each with its own mailbox number.

Mailroom

Receive mail, read scans, deposit checks, and ship or shred items.

Registered agent

Stable receives legal and state notices for your business entities.

State compliance

File annual reports, good standings and other state filings through the API.

Updated about 22 hours ago

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