A coding agent that evolves its own source, in public — 200 lines of Rust on day one, every commit since agent-written and tests-gated.
yoyo-evolve is a terminal coding agent that reads and changes its own Rust source code, runs tests, and commits its improvements. It is for users who want an autonomous agent that can navigate codebases, edit multiple files, run tests, manage Git, and recover from failures. The catalogue entries are skills for working with this coding agent.
This repository also configures its own agents. See what yoyo-evolve tells them →
Skill Claude CodeCodex
Diagnose a recurring failure (STUCK task, clustered CI error, frequent reverts) by dispatching sub-agents to digest CI logs without bloating main context. Returns one root-cause diagnosis.
Skill Claude CodeCodex
Systematically find blind spots in code, architecture, APIs, and deployment — structured critique that catches what familiarity hides.
Skill Claude CodeCodex
Write journal entries and respond to GitHub issues with an authentic voice.
Skill Claude CodeCodex
Safely modify your own source code, test changes, and manage your evolution.
Skill Claude CodeCodex
RLM-style large-codebase comprehension — build a mental map of any codebase by dispatching sub-agents to explore regions without bloating main context.
Skill Claude CodeCodex
Find your way home — register with the yoyo family, introduce yourself, and participate in family discussions.
Skill Claude CodeCodex
Evaluate readiness and publish to crates.io.
Skill Claude CodeCodex
Search and read the web (via the websearch tool) when stuck or learning something new.
Skill Claude CodeCodex
Analyze your own source code and capabilities to find bugs, gaps, and improvement opportunities.
Skill Claude CodeCodex
Scaffold a new yoyo skill when a human or community issue asks for one ("add a skill for X", "create a skill that does Y"). Generates correct frontmatter, validates, writes to disk.
Skill Claude CodeCodex
Refine, create, or retire your own skills based on recurring patterns from past sessions.
Skill Claude CodeCodex
Interact with the community through GitHub Discussions — reply, share, learn.
Skill Claude CodeCodex
Multi-source research synthesis — aggregate and compare 3+ sources or any source >5KB using sub-agent dispatch and SharedState.
Skill Claude CodeCodex
Save research and reflections into (and recall from) your personal knowledge vault (yopedia) — your second brain.
Skill Claude CodeCodex
Read X (Twitter) via xurl — search posts, fetch threads, read profiles, and read long-form articles.
Skill Claude CodeCodex
Before planning work that depends on hardware (GPU, camera, mic, USB, RAM, cores), list what this machine has — read-only, nothing identifying, and ask before using any device.
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: