> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ai-stats.phaseo.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Agent SDK Overview

> Build local, resumable agent loops on top of AI Stats Gateway across the supported Agent SDK languages.

Use the AI Stats Agent SDKs when your application needs more than one-shot generation:

* multi-step tool loops
* local runtime tools
* gateway-backed model turns
* resumable application-owned run state
* consistent request routing across the same languages as the core client SDKs

## Supported languages

The current Agent SDK language set matches the primary client SDK set exposed in AI Stats quickstart:

* [TypeScript](../typescript/agent-sdk)
* [Python](../python/agent-sdk)
* [Go](../go/agent-sdk)
* [C#](../csharp/agent-sdk)
* [PHP](../php/agent-sdk)
* [Ruby](../ruby/agent-sdk)

## Common model

Each Agent SDK keeps the same minimal mental model:

* define one agent
* define zero or more local tools
* create a gateway-backed model client
* run a bounded loop over the `responses` API

The TypeScript package is still the most feature-complete today and remains the current public launch focus for local tool-driven loops on AI Stats Gateway.

## TypeScript-first recipes

The current cookbook recipes are TypeScript-first:

* [Build a durable agent loop](../../cookbook/agent-sdk-durable-loop)
* [Research with agent-backed web search](../../cookbook/agent-sdk-research-brief)
* [Triage support with preset-driven agents](../../cookbook/agent-sdk-support-triage)
* [Review code with local runtime tools](../../cookbook/agent-sdk-coding-review)
* [Fan out local tools concurrently](../../cookbook/agent-sdk-parallel-tools)