> ## Documentation Index
> Fetch the complete documentation index at: https://quintus.tec.br/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> API for agent sessions or one-off executions in backend integrations.

## What it is

This API was designed for agent sessions or one-off executions in integrations such as N8N, Make, internal systems, CRMs, ERPs, and other automations.

## When to use it

* N8N;
* Make;
* internal systems;
* CRM automations;
* helpdesk triage and enrichment;
* internal copilots;
* ERP operational workflows;
* asynchronous jobs and server-to-server orchestrations.

## How it works

1. Your application authenticates with `X-API-Key`.
2. It optionally creates or identifies a user.
3. It creates a session or uses `run` for a direct execution.
4. It sends messages, reads history, reuses files, and terminates the session when needed.

## Main resources

* Users: CRUD for tenant end users.
* Sessions: creation, retrieval, and termination.
* Messages: synchronous send, streaming, and history.
* Files: upload and reuse within the tenant.
* Runs: one-shot execution without building the full session flow.