automation

Automate with smithers

Run and debug agent workflows with full observability.
409 stars50 forksTypeScriptGuide quality 8/10Updated 9/9/2026100% free · open source
What it does

Smithers allows you to create and manage agent workflows with full observability and time travel capabilities, supporting various models and harnesses like Claude Code, Codex, and Gemini.

When to use it
  • When you need to automate complex workflows and want to visualize and debug each step
  • When you want to reuse and iterate on previous workflow runs, with the ability to rewind, fork, and replay
  • When you're working with multiple AI models and need a unified workflow management system
Ready-to-paste prompt
Create a new workflow that uses the Claude Code model to generate text and then uses the Codex model to evaluate its quality, with the command `smithers run --model claudcode --harness codex`
Heads up: Make sure you have the correct version of Node.js installed, as Smithers requires a minimum version of 16.x to run, and also ensure you have the necessary dependencies and API keys configured for your chosen models and harnesses
Saves to your device
Use with Claude
New

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

🔑 Needs an API key

Works after you add credentials — the setup agent will ask you for them.

Try it instantly — no install
Claude Code
mkdir -p ~/.claude/skills/smithers && curl -fsSL https://workflowstacks.com/api/skills/smithers/claude-skill -o ~/.claude/skills/smithers/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.

What's inside — free to inspect

No purchase needed

Read the entire source before you build — unlike paid marketplaces that hide it behind a buy button.

31
top-level files
10
folders
342.0M
source size
MIT
license
Key files
.editorconfig
eslint.config.js
package.json
README.md
tsconfig.base.json
tsconfig.json
File tree
.github/
.smithers/
apps/
crates/
evals/
examples/
factory/
flows/
packages/
scripts/
.dockerignore
.editorconfig
.git-blame-ignore-revs
.gitattributes
.gitignore
.npmrc
.pnpmfile.mjs
bun.lock
Cargo.lock
Cargo.toml
CHANGELOG.md
CONTRIBUTING.md
eslint.config.js
eslint.invariants.js
Quick Actions
Details
Creator
smithersai
Language
TypeScript
Category
automation
Published
1/5/2026

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