ai-agent

agent-os: Fast AI

Name: agent-os: Fast AI
Author: rivet-dev

Startup founders get fast and cost-effective AI with agent-os. 3.0k+ GitHub stars

From the repo · “A portable open-source operating system for agents. ~6 ms coldstarts, 32x cheaper than sandboxes. Powered by WebAssembly and V8 isolates.”

intermediate⏱ 30 minutes💵 Free + LLM API costs

4,813 stars+22★ this week272 forksTypeScriptGuide quality 8/10 · reviewed Jul 2Updated 10/22/2026100% free · open source

What it is

Create portable AI agents using fast and cost-effective technology.

Real use case example

"A founder wants to automate a customer welcome process. They set up an agent-os instance, connect it to their Notion database and Resend email service, and use 3 simple steps: 1) When a new customer signs up, the agent adds them to Notion. 2) The agent checks for any existing conversations with that customer and adds a new note to the conversation in Notion. 3) The agent sends a welcome email to the customer using Resend. The result is a seamless customer welcome system that frees up the founder's time for other tasks."

Best insideClaude DesktopClaude CodeAny AI Client

When to use it

•When you need to deploy AI models at the edge with minimal latency
•When you want to reduce the cost of running AI workloads in the cloud
•When you require a high degree of isolation and security for your AI agents

Ready-to-paste prompt

node src/cli.js deploy --agent src/example/agent.ts --wasm src/example/agent.wasm

Heads up: Make sure you have the correct version of Node.js (14 or higher) and Docker installed on your system to build and run agent-os

Saves to your device

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/agent-os && curl -fsSL https://workflowstacks.com/api/skills/agent-os/claude-skill -o ~/.claude/skills/agent-os/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

How agent-os: Fast AI works

Codeflow

Free to inspect

Agent-os: Fast AI is a very large Rust project (~429k lines across 1464 code files, plus 719 test files). It is a full software project: use it through its install path rather than reading it end to end. Last commit this month, Apache-2.0 license, has a test suite.

Size

Very large codebase

~429k lines · 1464 code files · days to read — use, don't read

Setup

Developer setup

A real software project. Use it via its install path; don't expect to read it all.

Runs on

Rust

No API keys detected

Rust 92%C 4%TypeScript 2%Shell 1%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
AGENTS.md
The instructions the AI actually follows
3
Cargo.toml
Dependencies and the commands it exposes
4
examples/agent-to-agent/README.md
A worked example — copy this to get going

What's in each folder

packages/Sub-packages / plugins1256 files

examples/Examples you can copy447 files

docs/Documentation110 files

software/Folder508 files

crates/Folder486 files

toolchain/Folder478 files

secure-exec/Folder88 files

scripts/Helper scripts64 files

READMEHas testsDocumentedCI checksExamples includedApache-2.0 licenseUpdated this month

Use with Claude

New

Skip the builder — one click puts this in Claude, Cursor, Antigravity and more.

🛠️ Technical setup

Expect 20–40 minutes in a terminal — or let your AI agent drive it.

Try it instantly — no install

Claude Code

mkdir -p ~/.claude/skills/agent-os && curl -fsSL https://workflowstacks.com/api/skills/agent-os/claude-skill -o ~/.claude/skills/agent-os/SKILL.md

Open in another AI app

Opens the app with this repo with the prompt ready to go — no copy-paste needed.

Connect the whole catalog (MCP)

claude mcp add --transport http workflowstacks https://workflowstacks.com/api/mcp

Adds a WorkflowStacks connector to Claude Code: search and load any skill here by chatting.

Quick Actions

Details

Creator

rivet-dev

Language

TypeScript

Do this with a working workflow

Pages we wrote and tested that put a skill like this to work — importable n8n templates, outcome guides and Claude Desktop configs.

Free n8n template

Abandoned Cart Win-Back

Draft a personalized, non-pushy win-back email for every abandoned cart — referencing the exact product left behind. You approve before sending.

Outcome guide

Recover abandoned carts with personalized emails

Export abandoned carts to a Google Sheet and the workflow drafts a warm, specific win-back email for each — referencing the actual product, without desperate discount-spam. You review and send.