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fast-agent - Code, Build and Evaluate Agents

Coding Agent and Development Toolkit

fast-agent fast-agent

Simple extendable agents. Excellent provider and local model support. Flexible context management. Terminal native and scriptable.

Try it now Build an agent Explore the CLI
~/projects/fast-agent 
$ uvx fast-agent-mcp@latest -x
start an interactive session with shell tools

$uv tool install -U fast-agent-mcp
install the latest version of fast-agent

$ fast-agent --pack codex 
code download configuration to use codex

Extensive Model Support

Native provider support for Anthropic, Google and OpenAI compatible endpoints.
Auto configuration for llama.cpp hosted models.

Model features

MCP and ACP

Attach MCP servers from config or command line. Deploy Agents via ACP or MCP. Comprehensive support and transport diagnostics.

ACP guide
MCP guide

Plugin and Extend

Write plugins and hooks with simple Python, or use directly from the API. Distribute and update configurations with Card Packs.

Plugin docs

Control your context

Template based System Prompts. Install and update Agent Skills, prompt files or Agent definitions.

Agent Skills