Anvil Plugin Registry
A harness-agnostic registry that pulls skills, commands, agents, and hooks from the open-source ecosystem, catalogs them with compatibility metadata, and generates harness-specific outputs for Claude Code, Codex, and GitHub Copilot CLI.
How It Works
Upstream Repos Neutral Catalog Harness Outputs
(GitHub, Forgejo) (catalog/) (generated/)
trailofbits/skills ──┐ ┌─ Claude Code
garrytan/gstack ─────┤ ┌──────────────────┐ │ marketplace.json
mattpocock/skills ───┤────>│ Package records │────────>│ 19 plugins
conorbronsdon/* ─────┤ │ Portability class │ │
ComposioHQ/* ────────┤ │ Risk assessment │ ├─ Codex
Internal repos ──────┘ │ Capability map │────────>│ marketplace.json
└──────────────────┘ │ generated + syncable
├─ Copilot CLI
│ skills/ + syncable
└─ (future harnesses)
- Import -- Plugins and raw skills are pulled from upstream repositories, scanned with Semgrep, and mirrored byte-for-byte into
plugins-claude/ (or plugins-codex/ / plugins-copilot/ for non-Claude-native skills).
- Catalog -- Each package gets a neutral record in
catalog/packages/ with portability classification, risk assessment, and compatibility findings.
- Generate -- The catalog renders harness-specific output artifacts. Agnostic packages pass through unchanged. Adaptable packages get shallow transforms (tool name mapping, manifest rewriting, frontmatter normalization). Harness-specific packages are included only where they work natively.
Registry
Full Package List
Harness Compatibility Matrix
Each package is classified by how well it travels between harnesses:
trailofbits
Mindgard
JoranHonig
rohitg00
openshift-eng
jeremylongshore