LibreAI / Agents IA / fast-agent
// agents · evalstate/fast-agent

fast-agent

fast-agent est un projet de agents IA open source, créé par evalstate (evalstate/fast-agent sur GitHub). Il compte 3 928 étoiles sur GitHub et 446 forks, il est publié sous la licence Apache-2.0 et a été mis à jour pour la dernière fois sur GitHub le 8 octobre 2026.

Code, build and evaluate LLM agents with full MCP, Skills, ACP and A2A support.

★ 3,9 k étoiles⑂ 446 forksApache-2.0mis à jour oct. 2026
▦ visuel — le README de ce projet ne contient aucune capture intégrable,
voici donc un emplacement réservé. Le guide ci-dessous est complet malgré tout.
// détails du projet

Détails du projet

Étoiles GitHub
3 928
Forks
446
Licence
Apache-2.0
Dernière mise à jour sur GitHub
8 octobre 2026
Catégorie
Agents IA
Type de fiche
Guide d'installation complet
Site officiel
Official site
// fonctionnement

Comment ça marche

  1. Clarify your goal

    Decide the first concrete outcome you want from it, so you can pick the right example, template or mode instead of exploring everything at once.

  2. Get the project

    Clone the repository (or install the published package) and skim its README quick start for the requirements for your platform.

  3. Install and configure

    Run the documented install step and set any required configuration — such as provider keys, data sources or local services — before the first run.

  4. Run your first task

    Execute the smallest documented example end to end, confirm the output is what you expected, then adapt it to your real data or workflow.

// fonctionnalités

Pourquoi on l'adore

Complete MCP support

End-to-end tested MCP features including Sampling and Elicitations, plus MCP Apps and the OpenAI Apps SDK.

Agent Skills

SKILL.md-based skills managed with the /skills command, with a built-in registry covering LSP, hooks, compaction and automation.

Built-in workflows

Chain, Parallel, Router, Orchestrator, Evaluator-Optimizer, MAKER and Agents-as-Tools patterns ready to compose.

Interactive shell mode

Run shell commands with ! inside the session and connect to MCP servers with /connect over stdio or streamable HTTP with OAuth.

Multimodal and structured outputs

Vision, PDF and structured-output support, well tested across providers.

ACP and A2A ready

Any setup can run inside ACP clients via fast-agent-acp, with A2A support for agent-to-agent work.

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// lancez-le

Lancez-le vous-même

  1. Clone the repository

    Get the source so you can inspect, configure and run it locally.

    git clone https://github.com/evalstate/fast-agent.git
    cd fast-agent
  2. Install fast-agent

    Install the package as a uv tool so the CLI and shell aliases are available.

    uv tool install -U fast-agent-mcp
  3. Start an interactive session

    Launch with shell support and a model of your choice, then connect MCP servers with /connect.

    fast-agent --model opus -xx  # or quick-try: uvx fast-agent-mcp@latest -x
// cas d'usage

Ce que vous pouvez créer

Readers working through the AI Agents shelf also stop at Guardrails, Programmable guardrails to keep LLM systems safe and on rails. Also on this shelf: council-of-high-intelligence — Convene 18 legendary thinkers as an AI council that debates your hardest questions — inside Claude Code. Readers working through the AI Agents shelf also stop at AP2, an open protocol for secure AI-driven payments.

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// faq

Questions fréquentes

Who maintains fast-agent?

It is maintained by evalstate on GitHub (evalstate/fast-agent), where the source, issues and releases live.

Is it free to use?

Yes — it is free and open source under Apache-2.0, which permits use, modification and commercial redistribution, with licence/notice retention.

Does it need a paid API key?

Yes — most use needs your own LLM provider key (Anthropic, OpenAI, Google or another supported provider), unless you point it at a local model via Ollama or llama.cpp.

How does it compare to LangChain or the OpenAI Agents SDK?

Compared with LangChain or the OpenAI Agents SDK, fast-agent's distinguishing focus is: code, build and evaluate LLM agents with full MCP, Skills, ACP and A2A support. Pick it when that focus matches your need; the alternative may suit you better if its broader or different scope is the priority.

How do I get started?

Clone https://github.com/evalstate/fast-agent (or install its published package), follow the README quick start to install and configure it, then run the smallest documented example — the Run section on this page mirrors those steps.

// continuez l'exploration

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// alternatives

Alternatives en Agents IA

Les autres projets de la catégorie Agents IA avec le plus d'étoiles du catalogue LibreAI — la sélection réaliste d'alternatives si fast-agent ne vous convient pas.

// plus en agents

Plus en Agents IA

Projets de la catégorie Agents IA proches dans le catalogue, les plus proches en étoiles de fast-agent — continuez à explorer de part et d'autre.

Obtenir fast-agent

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