# Alty

> Alty is a multi-tenant business platform: leads, jobs, quotes, invoices, a support desk and a team in one place. Every Alty business ("instance") has its own host, https://<slug>.alty.one, and its own API under /api/public/v1, authenticated with an instance-issued key (`Authorization: Bearer altyk_…`) that an admin creates in Admin › API. The integration guide below is the complete contract, written to be handed whole to an AI agent: read it before calling anything, start with `GET /api/public/v1/whoami`, keep the key on a server, and do not guess endpoints, fields or scopes the guide does not list.

## Docs

- [Alty API integration guide](https://www.alty.one/developers/guide.md): authentication, scopes, errors, limits, retries and idempotency, recipes, what the API cannot do, and the endpoint index (Markdown)
- [OpenAPI 3.1 document](https://www.alty.one/developers/openapi.json): every public endpoint with its request and response schemas (JSON)
- [Developers page](https://www.alty.one/developers): the same guide rendered for people

## Optional

- Per-instance copies: the same documents, byte for byte, at https://<slug>.alty.one/api/public/v1/guide.md and https://<slug>.alty.one/api/public/v1/openapi.json, with no key