Gaia: The Evidence-Backed AI Agent Skill Graph 🌲

Stop guessing if your agent works. Prove it.

Gaia is the open-source registry where AI agent capabilities aren't just claimed—they're verified through a public ledger of code-execution runs, license checks, and security audits.

👉 Claim your skill origin: Run curl -fsSL https://gaiaskilltree.com/install.sh | sh and verify your first skill in under 2 minutes.

Get your badges! Some skills already curated.

Generate yours at gaiaskilltree.com/badges/.

Brand & product: PRODUCT.md · CONTEXT.md · DESIGN.md

Keywords: AI Agent Skill Registry • Evidence-Backed Skill Graph • Capability Graph • Model Context Protocol • AI Agents • Attribution

Who maintains this?

Right now just me.

Truth is, Gaia will exist even without anyone sending their skills.

I built this because skills should be attributed to the people who proved them. Permanently, not just until the repo goes private.

So that means, its the developers who make skills maintaining this. I have a thorough curation process, and the dev community is evidence on why this works. As long as developers making skills exists, this registry will exist. This is open-source, so feel free to contribute!

The Gaia Skill Tree!

◆ mattpocock/skills  [5★]
  ├─ ◇ mattpocock/engineering  [4★]
  │  ├─ ◇ devin-ai/autonomous-swe  [3★]
  │  │  ├─ ○ garrytan/design-html  [3★]
  │  │  ├─ ○ /code-execution
  │  │  └─ ○ /error-interpretation
  │  ├─ ○ addy-osmani/code-simplification  [3★]
  │  ├─ ◇ garrytan/garrytan  [4★]
  │  │  ├─ ○ /plan-decompose
  │  │  └─ ○ ████████/ask-matt
  │  ├─ ◇ mattpocock/to-prd  [3★]
  │  │  ├─ ○ garrytan/retro  [3★]
  │  │  └─ ○ /plan-decompose  (↑ see above)
  │  ├─ ○ mattpocock/triage  [3★]
  │  ├─ ◇ mattpocock/ubiquitous-language  [3★]

◆ garrytan/gstack  [5★]
  ├─ ○ garrytan/office-hours  [3★]
  ├─ ○ garrytan/benchmark  [3★]
  ├─ ◇ addy-osmani/code-review-and-quality  [3★]
  │  ├─ ○ garrytan/design-html  [3★]
  │  ├─ ○ /diff-content
  │  └─ ○ garrytan/benchmark  [3★]  (↑ see above)
  ├─ ○ pbakaus/impeccable  [4★]
  ├─ ◇ garrytan/garrytan  [4★]
  │  ├─ ○ /plan-decompose
  │  └─ ○ ████████/ask-matt
  ├─ ◇ garrytan/design-consultation  [3★]
  │  ├─ ◇ ████████/stagehand
  │  │  ├─ ○ firecrawl/firecrawl-build-search  [4★]
  │  │  └─ ○ /computer-use

(243 skills total — see docs/tree.md)

How Skills Fuse

Do a gaia scan and gaia fuse render in your terminal:

  mattpocock/grill-me  ────────────┐
                                   ├──▶  mattpocock/grill-with-docs  ◇
  mattpocock/ubiquitous-language  ─┘

Basics fuse into Extras; Extras can fuse into Ultimates. Evidence powers each ascent.

[!TIP] New here? The interactive tutorial at gaiaskilltree.com covers everything visually: skill tiers, the stars axis, The Initiate's Rite, and copy-paste commands.

Stars

Gaia uses a tiered star system (0★–6★) to rank agent capabilities.

Symbol	Tier	Levels
○ Basic	Primitive capability	0★ → 4★
◉ Unique	Mastery without fusion	4★ → 6★
◇ Extra	Composite workflow	2★ → 4★
◆ Ultimate	Platform capstone	5★ → 6★

Evidence

Evidence Type (provenance: one of 10 canonical types per the G7 Trust Taxonomy RFC

arxiv repo or repo-own github-stars github-stars-own peer-review social-signal proxy-containment benchmark-result verifier-attestation fusion-recipe

Evidence Grade S | A | B | C | ungraded
Trust Magnitude This is the evidence grade at the Skill level.

Detailed Policy: See META.md for the full evidence methodology, ranking floors, and prestige requirements.

Public Trust Ledger: The Trust Ledger ranks every named skill by computed Trust Magnitude — see docs/trust/ledger/ (deployed at https://gaiaskilltree.com/trust/ledger/ once the site rebuilds).

API

The Gaia registry is available as a static read-only JSON API — no authentication, no rate limits.

Base URL: https://gaiaskilltree.com/api/v1/
Docs: gaiaskilltree.com/api/
OpenAPI 3.1 spec: /api/v1/openapi.json

Quick examples:

# Health check
curl https://gaiaskilltree.com/api/v1/health.json

# All skills (page 1, sorted by Trust Magnitude)
curl https://gaiaskilltree.com/api/v1/skills/index.json

# Single skill detail
curl https://gaiaskilltree.com/api/v1/skills/garrytan/gstack.json

# Trust leaderboard
curl https://gaiaskilltree.com/api/v1/leaderboard.json

Quickstart

**1. CLI

Current Gaia CLI version: 6.8.16.

curl -fsSL https://gaiaskilltree.com/install.sh | sh

Python installation alternative:

pip install gaia-cli

pipx:

brew install pipx
pipx install gaia-cli

Windows (PowerShell one-liner installer):

iex (irm https://gaiaskilltree.com/install.ps1)

Manual Python/pip fallback (Windows):

py -m pip install gaia-cli
$env:PATH += ";" + (python -c "import sysconfig; print(sysconfig.get_path('scripts', 'nt_user'))")

Full Install (for devs) (editable install with all extras):

git clone https://github.com/gaia-research/gaia-skill-tree.git
cd gaia-skill-tree
pip install -e ".[embeddings,dev,docs]"

The dev extra installs packaging/test tools such as build and pytest; without it, packaging-specific tests are skipped locally with guidance to install developer extras.

Update

gaia update

2. Init / Scan

gaia init

gaia scan

Your repo will be scanned for existing skills. Everything will be in .gaia folder.

3. Push to this repo!

gaia push

A GitHub issue opens automatically. Don't worry, we thoroughly review every intake.

4. MCP Server

claude mcp add gaia -- npx -y @gaia-research/[email protected]

Connects your AI agent to the public Gaia Skill Tree registry over stdio. Full configuration guidance and planned features are documented on the Gaia MCP Page.

Interactive TUI

gaia

Will open all sorts of commands in a nice way.

gaia skills

Navigate skills:

Fuzzy search by name, description, or intent
View tree (^T) and run scan (^G) without leaving the TUI
Install skills with one keystroke
Keyboard-native: ↑↓ navigate · Enter install · q quit

CLI Reference

usage: gaia [-h] [--registry REGISTRY] [--global] [--version]
            {help,init,scan,fetch,pull,update,install,uninstall,share,tree,push,propose,version,whoami,login,logout,reset,graph,stats,appraise,promote,fuse,lookup,path,dev,skills}
            ...

Gaia Registry CLI

options:
  -h, --help           show this help message and exit
  --registry REGISTRY  Path to a local Gaia registry checkout. Defaults to auto-resolved local or
                       global registry.
  --global, -g         Use global GAIA_HOME registry, ignoring any local .gaia/ config.
  --version, -v        Print the Gaia CLI version and exit.
  --tui                Launch the TUI (Terminal User Interface).
  --canon              Show canonical registry data instead of local-first view.

Getting started:
  gaia init [--user <name>] [--scan <path>] [--yes] [-y]
  gaia scan [--quiet]
  gaia push [--dry-run] [--no-issue]
  gaia                        Open command selector
  gaia skills                 Launch skills explorer (TUI)

Daily commands:
  gaia tree [--named] [--title]
  gaia promote [<skillId>] [--all] [--name <name>]
  gaia appraise [<skillId>]
  gaia stats
  gaia pull
  gaia fuse <skillId> [--name <name>]
  gaia path <skillId> [--owned-only] [--json]
  gaia lookup <skillId>
  gaia graph [--format html|svg|json] [-o <path>] [--no-open]
  gaia propose [<skillId>] [--ultimate] [--target <name>] [--no-pr]

Skills:
  gaia skills <list|search|info|install|uninstall>
  gaia skills list [--exclude-pending]
  gaia skills search <query> [--exclude-pending]
  gaia skills info <skill_id> [--exclude-pending]
  gaia skills install <skill> [--global | --local]
  gaia skills uninstall <skill_id>

Share:
  gaia share [--user <name>] [-o <path>] [--stdout]
  gaia install <bundle.json|url>   Preview & install a shared tree (guided)

Utilities:
  gaia whoami
  gaia login                    Sign in with GitHub (device flow)
  gaia logout                   Sign out of GitHub (clears the local token)
  gaia version
  gaia update
  gaia dev mcp
  gaia dev release <patch|minor|major>
  gaia dev docs [--check]

Maintainer commands:  gaia dev --help

MCP Server Full Instructions

@gaia-registry/mcp-server connects Gaia to MCP-compatible agents (Claude Code, Cursor, VS Code, etc.).

Agent	Install
Claude Code	`claude mcp add gaia -- npx @gaia-registry/mcp-server`
Any MCP client	Command: `npx`, args: `@gaia-registry/mcp-server`

Set GAIA_USER=your-github-username and optionally GITHUB_TOKEN for PR tools. See packages/mcp/ for full docs and agent-specific config examples.

Agent Discovery

To help AI agents and automated clients discover and crawl the registry programmatically:

Registry graph: /graph/gaia.json
Named skills: /named/
Trust ledger: /trust/ledger/

Ecosystem

Companion tools that build on Gaia but run independently:

skill-fuse — a standalone skill that combines two AI agent skills into one fused skill. Powered by Gaia, works without it. Registered in the registry as gaia-research/skill-fuse.

Repository Structure

registry/                 curated registry data and public generated catalogs
registry-for-review/      pending skill batch intake records
skill-trees/              per-user skill-tree.json files
generated-output/         ignored local scan and render output
docs/                     docs site
src/gaia_cli/             Python CLI package
packages/cli-npm/         npm wrapper package
packages/mcp/             MCP server package
scripts/                  validation, rendering, docs, and release helpers
tests/                    Python test suite

Contributing

Gaia is a shared map of agent capabilities.

Common ways to help:

Review draft skills for clarity, overlap, and evidence quality.
Turn accepted reviews into concrete PRs (new skill, fusion, or reclassification).

Contribution steps: CONTRIBUTING.md. Full policy/reviewer guidance: https://gaiaskilltree.com/en.

Contributors

Thank you to everyone who has expanded the Gaia registry <3 You are the best!

Core Team

Contributor	Role
@mbtiongson1	Creator and maintainer: graph design, CLI, MCP server, curation pipeline
@rico-favor	Co-founder and twin brother: authored the Gaia Skill Bench proposal (#960) — the pillar model, task-generation pipeline, and anti-gaming spec that Gaia's benchmark methodology is built on. Ongoing pair programming across the registry. Gifted `tiongson.co` — the domain this project runs under. Direct engineering contributions (July 2026): CI security hardening (#1162), ReDoS fix in api-client (#1163), GitHub host validation fix (#1164), intake batch schema fix (#1165), `--dir` flag for nonstandard skill roots (#1166).
@MariTiongson	Collaborator: English localization (`docs/en/`) translation and layout updates
@Juno	Key contributor: graph browser expansion, function-calling skill, RAG pipeline evidence, and CLI DX improvements
@milim-gaia	Core marketing agent: SEO optimization, copywriting, and agentic discovery alignment
@nova-gaia	Core marketing agent: automated outreach campaigns, compliance, and ecosystem growth loops

Named Skills

Developers	Skills
@ruvnet	48 — agentdb, flow-nexus, hive-mind-coordination, browser, and 44 others
@garrytan	47 — gstack ecosystem: browse, qa, ship, review, benchmark, learn, and 41 others
@google-deepmind	37 — alphafold, alphagenome, ensembl, clinvar, foldseek, and 32 others
@mattpocock	34 — to-prd, triage, diagnose, tdd, zoom-out, grill-me, and 28 others
@obra	12 — superpowers ecosystem: systematic-debugging, dispatching-parallel-agents, and 10 others
@addy-osmani	9 — agent-skills, performance-optimization, test-driven-development, and 6 others
@intelligentcode-ai	8 — database-engineer, devops-engineer, security-engineer, and 5 others
@[anonymous]	7 — hf-cli, llm-trainer, datasets, transformers-js, and 3 others

Community contributors (1–2 skills each): @karpathy, @anthropic, @openai, @[anonymous], @glincker, @spring-ai-alibaba, @pexp13, @caioribeiroclw-pixel

Evidence & Curation

Contributor	Contribution
@balukosuri	Evidence: community reproduction of Karpathy's autoresearch as a universal skill
@kriptoburak	Evidence evaluator: x-twitter-automation evidence review
@fahimkarim01	Curation: corrected pexp13/sentiment-analysis metadata links

Code & Fixes

Contributor	Contribution
@fazalpsinfo-cmyk	Bug fix: resolved `UnboundLocalError` in `gaia scan` when no custom skills are detected (#1141, PR #1188)

Bots

Bot	Contribution
@jules	Named skills via Google Jules AI: langgenius suite (backend-code-review, frontend-code-review, e2e-cucumber-playwright, and 2 others)
@gaiabot	Internal Gaia bot: repo triage and docs-sync automation
@gemini-cli	Curation: generative-media, mathematical-animation, and other generic skills from Hermes ecosystem

Programmatic Management

The Gaia registry is programmatically managed. All meta shifts (adding, merging, splitting, adding evidence) must be performed via the Gaia CLI. Hand-editing JSON nodes is deprecated to ensure schema integrity and automated timeline logging.

Privacy

Gaia does not store personal information.

Skills are summarised, not stored. gaia scan records capability type, level, and evidence class — never file contents, prompt text, or conversation history.
Only public repo links. The registry stores your public GitHub username and a public repo URL when you explicitly submit a named skill. Nothing else.
Generalised by default. Skill descriptions capture capability categories, not personal details about you or your agent's behaviour.
No telemetry. The CLI and the static website collect zero analytics or usage data.

Full details: PRIVACY.md · gaiaskilltree.com/privacy.html

Topics: gaia-skill-tree, ai-agent, skill-registry, capability-graph, evidence-backed, agent-skills, attribution, model-context-protocol, open-source-ai, llm-ops, agent-framework

Inspiration

Be like Rimuru. The main inspiration for this repository. Basically stole the idea of the "Great Sage" and applied it to agent skills.

Rimuru Tempest

License

Apache 2.0: see LICENSE.

Graph is canonical. Everything else is a shadow.

Gaia Skill Tree

README