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evalstate/fast-agent

A flexible CLI-first framework for building, evaluating, and interacting with sophisticated multimodal LLM agents and workflows, offering comprehensive model and skill support.

Core Features

CLI-first interactive terminal with TUI-style input, completions, and streaming responses.

Comprehensive LLM support including Anthropic, OpenAI, Google, Azure, Ollama, Deepseek, and local models via llama.cpp.

End-to-end MCP (Model Context Protocol) feature support, including sampling and elicitation.

Agent Skills, Shell Mode, Structured Outputs, PDF and Vision support.

Simplified agent application development with declarative syntax and version control friendly configurations.

Quick Start

uvx fast-agent-mcp@latest -x

Detailed Introduction

fast-agent is a powerful, CLI-first framework designed for the rapid development, evaluation, and deployment of sophisticated multimodal AI agents and workflows. It provides a flexible toolkit for interacting with various Large Language Models (LLMs) from providers like Anthropic, OpenAI, and Google, as well as local models. With comprehensive support for the Model Context Protocol (MCP), it enables developers to build agents with advanced features like skills management, shell integration, structured outputs, and vision capabilities. Its declarative syntax and interactive terminal streamline the agent creation process, making it an ideal platform for both coding agents and complex automation.