skills

A collection of agent skills for AI coding agents.

Available Skills

software-engineering

Skill	Description
architecture-decision-framework	Make architecture decisions using decision matrices, weighted scoring, and iterative refinement.
bulk-import-engineering	Plan, build, or audit bulk file import features with validation previews, execution identity, and safe recovery.
prune-codebase	Prune code, tests, documentation, configuration, and tooling while preserving intended behavior and useful rationale.
test-strategy	Choose tests that pin meaningful behavior at the smallest useful boundary.
tool-evaluation-and-adoption	Vet an open-source tool before adopting it: reconnaissance, security review, fit analysis, go/no-go verdict, verified install.

automation

Skill	Description
autonomous-improvement-loop	Compound small improvements on a recurring schedule without per-cycle direction.

research

Skill	Description
domain-research	Research a domain via its canonical authorities and frameworks.

Installing Skills

Interactive picker

npx skills add agustinusnathaniel/skills

This will present an interactive picker of all available skills. Select the ones you want.

Bundled plugin

The repository also packages all maintained skills as one plugin for Claude Code, Codex CLI, and ZCode. The root marketplace.json is a compatibility mirror of .claude-plugin/marketplace.json; keep their plugin entries and versions aligned.

In Claude Code, add the marketplace and install the bundled plugin:

/plugin marketplace add agustinusnathaniel/skills
/plugin install agustinusnathaniel-skills@agustinusnathaniel-skills

In Codex CLI, add the marketplace and install the same plugin:

codex plugin marketplace add agustinusnathaniel/skills
codex plugin add agustinusnathaniel-skills@agustinusnathaniel-skills

In ZCode, open a workspace, then go to Settings > Plugins > Create > Add marketplace and enter agustinusnathaniel/skills. Find the marketplace in the Personal section and install the bundled plugin.

In Devin, install it from Customize → Plugins → Add plugin → From repository with agustinusnathaniel/skills, or with the CLI:

devin plugins install agustinusnathaniel/skills

The Devin manifest (.devin-plugin/plugin.json) takes precedence over .claude-plugin/plugin.json in Devin and loads only the software-engineering skills.

When publishing an update, bump the version in .claude-plugin/plugin.json, .devin-plugin/plugin.json, and the matching plugin entry in every marketplace.json file.

Skill rename

reduce-production-code is now prune-codebase. Reinstall from this repository and select prune-codebase, then update saved invocations and links that use the old name. Existing installed copies retain their old name until migrated.

Adding New Skills

Create a new skill directory under skills/<domain>/<skill-name>/ with a SKILL.md containing YAML frontmatter (name and description fields), then add it to .claude-plugin/plugin.json, the appropriate skills.sh.json grouping, and the table above.

Validate the skill frontmatter and relative reference links. Keep the directory, frontmatter name, and both registry entries consistent.