REI Chat API and SDK - Rei - Docs

Use the REI Chat API to integrate conversational responses into an application. It also exposes Unit management and tool configuration. Core maintains reasoning state, which it uses to produce structured results; a language model renders those results as responses.

Choose an integration

Task	Guide
Authenticate and make a request	Quickstart
Use the JavaScript or Python package	SDK
Call Rei Chat from an existing agent	Integration with existing agents
Call Rei Chat from an application service	Integration with existing services

Base URLs

Base URL	Operations
`https://rei-api.reilabs.org/v1`	Chat inference
`https://api.reilabs.org/v1`	Unit and agent management

Use the hostname shown in the endpoint reference.