Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

Reviews animation and motion code against a high craft bar derived from Emil Kowalski's design engineering philosophy. Default to flagging; approval is earned.

Open Policy Agent (OPA) is an open source, general-purpose policy engine.

A comprehensive C code style guide packaged as an AI agent skill with clang-format integration, enabling agents to write, edit, and format C code consistently.

Agent skills for Claude Code and other agentskills.io-compatible agents. See https://developertoolkit.ai for more information about skills in general.

Raptor turns Claude Code into a general-purpose AI offensive/defensive security agent. By using Claude.md and creating rules, sub-agents, and skills, and orchestrating security tool usage, we configure the agent for adversarial thinking, and perform research or attack/defense operations.

A general fine-tuning kit geared toward image/video/audio diffusion models.

Vibe-Skills is an all-in-one AI skills package. It seamlessly integrates expert-level capabilities and context management into a general-purpose skills package， enabling any AI agent to instantly upgrade its functionality—eliminating the friction of fragmented tools and complex harnesses.

Curated collection of reusable agent skills for AI coding assistants like Cursor, Claude Code, and GitHub Copilot.

Ouroboros — self-creating AI agent. Born Feb 16, 2026.

A general purpose scientific writer

A general-purpose probabilistic programming system with programmable inference