SpecDD Agent Plugins

Reusable SpecDD skills for agent development workflows.

This repository is the source-of-truth build repo for product-specific SpecDD agent plugins. It does not replace the specdd CLI or install framework files. Generated plugins help agents read a target project's active .specdd/bootstrap.md chain, resolve local spec authority, and work through orientation, explanation, planning, implementation, review, testing, tracing, documentation, refactoring, debugging, and risk assessment.

Repositories

• Source repo: https://github.com/specdd/agent-plugins
• Codex plugin output: https://github.com/specdd/plugin-codex
• Claude plugin output: https://github.com/specdd/plugin-claude
• GitHub Copilot skills output: https://github.com/specdd/plugin-copilot
• Junie skills output: https://github.com/specdd/plugin-junie
• Cline skills output: https://github.com/specdd/plugin-cline
• Antigravity plugin output: https://github.com/specdd/plugin-antigravity
• Homepage: https://specdd.ai
• License: Apache-2.0

Plugin output repositories are checked out as submodules under plugins.

Supported Agents

Agent	Output repo	Install path	Validation
Codex	specdd/plugin-codex	codex plugin marketplace add specdd/specdd --ref main, then codex plugin add specdd@specdd	make test runs the Codex plugin validator.
Claude Code	specdd/plugin-claude	claude plugin marketplace add specdd/specdd, then claude plugin install specdd@specdd	make test runs claude plugin validate plugins/claude.
GitHub Copilot	specdd/plugin-copilot	Install each skill with gh skill install specdd/plugin-copilot <skill>.	make test runs gh skill publish plugins/copilot --dry-run.
Junie	specdd/plugin-junie	Copy skills/* into ~/.junie/skills/ or .junie/skills/; gh skill install --agent junie is a secondary tracked install path.	Built and checked by make build and make check; no Makefile validator until a stable native validator exists.
Cline	specdd/plugin-cline	Copy skills/* into ~/.cline/skills/ or .cline/skills/; gh skill install --agent cline is a secondary tracked install path.	make test runs the project-local Cline validator.
Antigravity	specdd/plugin-antigravity	agy plugin install https://github.com/specdd/plugin-antigravity.git; marketplace install can be added when an Antigravity marketplace is configured.	make test runs agy plugin validate plugins/antigravity.

Source Layout

• src/skills: shared skill specs and SKILL.md.ejs templates.
• src/fragments: reusable rendered instruction fragments.
• src/shared: shared assets copied into every plugin output.
• src/plugins/codex: Codex-specific package files.
• src/plugins/claude: Claude-specific package files.
• src/plugins/copilot: GitHub Copilot skills package files.
• src/plugins/junie: Junie skills package files.
• src/plugins/cline: Cline skills package files.
• src/plugins/antigravity: Antigravity plugin package files.
• src/build: build tooling and project-local validators.

Skills

• specdd-adopt: create or improve .sdd specs.
• specdd-orient: read bootstraps, inspect repo shape, and get ready for tasks.
• specdd-explain: explain specs in succinct human language.
• specdd-plan: plan a change under existing specs.
• specdd-do: implement a change under existing specs.
• specdd-review: review changes against specs.
• specdd-task: find, add, organize, and verify SpecDD tasks.
• specdd-trace: map specs to code, tests, and changed files.
• specdd-test: derive focused tests from governing specs.
• specdd-refactor: change structure without changing specified behavior.
• specdd-debug: diagnose bugs against the governing contract.
• specdd-docs: turn specs into user or developer documentation.
• specdd-risk: classify change risk before work starts.

Development

Before changing this repository, read .specdd/bootstrap.md and repo.sdd. The project spec grants repository-wide write authority but requires generated plugin behavior to defer to the target project's own SpecDD bootstrap chain.

Build generated plugin outputs:

make build

Initialize plugin submodules after cloning:

make modules-init

Check that generated plugin outputs are current:

make check

Build generated plugin outputs, check freshness, and run available product validators:

make test

make test validates plugins/codex with the Codex plugin validator, plugins/claude with claude plugin validate, plugins/copilot with gh skill publish --dry-run, plugins/cline with the project-local Cline validator, and plugins/antigravity with agy plugin validate. Junie is built and checked, but it does not have a Makefile validator until a stable native validator exists.

Release generated plugin repositories:

make modules-release

make modules-release runs the full test target, asks for confirmation, then commits and pushes changed plugin submodules listed in the Makefile PLUGINS variable. Plugins with no generated changes are skipped before version, tag, commit, or push operations. At present, PLUGINS includes every generated plugin output: Codex, Claude, Copilot, Junie, Cline, and Antigravity.

Discard local plugin output changes and pull the latest plugin repositories:

make modules-reset

make modules-reset resets and cleans each plugin submodule to origin/main.

The Codex validator defaults to $CODEX_HOME/skills/.system/plugin-creator/scripts/validate_plugin.py, with CODEX_HOME defaulting to ~/.codex. Antigravity defaults to $HOME/.local/bin/agy. Override CODEX_PLUGIN_VALIDATOR, CLAUDE, GH, CLINE_VALIDATOR, AGY, NODE, or PYTHON when using different local tool paths.

Legal

Copyright (c) 2026 Matīss Treinis and SpecDD contributors

SpecDD is licensed under the Apache License 2.0. SpecDD™ is a trademark of Matīss Treinis.