The registry for Single File Agents

One file. Documentation + contract + deterministic code. Shareable, installable, evolvable. The standard for AI agents.

📄 Read the Manifesto Browse Agents
# Install a single file agent
$ rappterhub install kody-w/weather-poet
✓ Installed weather-poet v1.0.0 (1 file)

# Use it immediately
$ openrappter --exec WeatherPoet "Tokyo"
🌤 Partly cloudy, 52°F
Gray clouds drift along / a quilt of silver and white / light fades in and out

Why Skills Aren't Enough

Skills tell an AI what to do. Single File Agents tell it what AND how — deterministically, every time. Three layers, one file:

📋 YAML Contract
📖 Markdown Docs
⚙️ Deterministic Code
Read the Full Manifesto →

Why RappterHub?

📄 Single File Standard

Every agent is one file — docs, contract, and code. No manifest drift. No companion files. The file IS the agent.

🎯 Deterministic

Agents have a perform() method that does the same thing every time. Unlike skills, behavior doesn't depend on LLM interpretation.

📥 One Command Install

Install any agent with one command. It works immediately — auto-discovered, no configuration needed.

🔒 Bounded & Auditable

Native metadata defines the contract. Code defines the behavior. Read one file to know exactly what an agent can do.

🧬 Evolvable

Agents can be generated, molted, and versioned through natural language. They evolve — the contract stays clean.

🔗 Chainable

Agents output data_slush — curated signals that feed into the next agent automatically. No LLM interpreter between steps.