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RubyLLM Documentation

Developer documentation for RubyLLM 2.1.1 (stable).

For agents: Developer docs for RubyLLM 2.1.1, a Ruby/Rails library for chats, tools, agents, images and audio across 19 AI providers, with model registry JSON.

rubyrailsllmai agentsmulti-provider

Their llms.txt

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# RubyLLM Documentation

> Developer documentation for RubyLLM 2.1.1 (stable).

The canonical docs cover installation, configuration, providers, core features, agents, evaluations, observability, Rails integration, and the complete reference. Also available: the [API reference Markdown index](https://rubyllm.com/api/index.md), the live [model registry as JSON](https://rubyllm.com/models.json), the [source](https://github.com/crmne/ruby_llm), and the [RubyGems package](https://rubygems.org/gems/ruby_llm).

## Full Documentation

- [Complete documentation](https://rubyllm.com/llms-full.txt): All canonical pages in one Markdown document.

## Overview

- [RubyLLM](https://rubyllm.com/): Build and evaluate AI features in Ruby and Rails with chats, tools, agents, images, audio, and video across 19 providers.

## Start Here

- [Getting Started](https://rubyllm.com/getting-started/): Install RubyLLM and build with chats, tools, agents, images, video, audio, and document processing in Ruby and Rails.
- [How RubyLLM Works](https://rubyllm.com/overview/): Understand RubyLLM's public API, its providers and protocols, and the services they share.
- [Configuration](https://rubyllm.com/configuration/): Set provider credentials, choose default models, and share configuration across the RubyLLM API.
- [Provider Setup and Custom Endpoints](https://rubyllm.com/configuration-providers/): Configure provider credentials and connect to hosted or local APIs through compatible endpoints.
- [Connection, Logging and Contexts](https://rubyllm.com/configuration-connection/): Timeouts, retries, proxies, connection reuse, logging, the model registry file, and isolated multi-tenant contexts.
- [What's New in 2.1](https://rubyllm.com/whats-new-in-2-1/): Connect to MCP servers, ask typed judgments, evaluate your agents, and trace them with OpenTelemetry in RubyLLM 2.1.
- [What's New in 2.0](https://rubyllm.com/whats-new-in-2-0/): Explore the expanded provider coverage, new AI operations, conversation controls, and Rails integration in RubyLLM 2.0.
- [AI Coding Assistants](https://rubyllm.com/ai-coding-assistants/): Install the RubyLLM skill to help your coding assistant use the API and documentation that match your application.

## Core Features

- [Chat](https://rubyllm.com/chat/): Start a conversation, give it instructions, and switch models while keeping the same Ruby API.
- [Attachments](https://rubyllm.com/attachments/): Ask questions about images, recordings, videos, and documents through one attachment API.
- [Stream Responses](https://rubyllm.com/streaming/): Learn how to display AI responses in real-time as they're generated
- [Structured Output](https://rubyllm.com/structured-output/): Get AI responses that match an exact JSON schema with required fields and types
- [Extended Thinking](https://rubyllm.com/thinking/): Give reasoning models more time and budget to deliberate, with optional access to thinking output
- [Citations](https://rubyllm.com/citations/): Get verifi
…

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