This is a portable engineering toolkit, cross-harness AI agent skills library of AI agent workflows that helps teams turn ideas into well-scoped, verifiable software changes, across Claude Code, Copilot, Codex, Cursor, and other coding environments, with a cross-platform installer.
This repository also configures its own agents. See what zen-agent-skills tells them →
Skill Claude CodeCodex
Turns the current session's context into a self-contained, execution-ready brief that a fresh agent session or a spawned subagent can run without seeing this conversation. Use this whenever the user wants to move work to another agent or a new session and wants the instructions written down first. Trigger on phrases…
Skill Claude CodeCodex
Use to answer questions about agent sessions across every project at once, and to act on one where the harness allows it. Reports which sessions exist, which are running, what each cost, which skills were used, and what failed, by reading the local observatory store rather than one transcript at a time. Where the…
Skill Claude CodeCodex
Writes new Markdown documentation for the repository it is used in, grounded in the actual code. Handles READMEs (technical or for non-technical readers), architecture docs with Mermaid diagrams, setup and deployment guides, contributing guides, design docs, and architecture decision records. Use this whenever the…
Skill Claude CodeCodex
Updates and revises existing Markdown documentation in place, without flattening its voice or rewriting more than asked. Reconciles a doc with the current code or project state, fixes cross-document links and references after files or folders have moved, keeps a set of docs internally consistent. Use this whenever the…
Skill Claude CodeCodex
Use when code has moved and the documentation may not have, or when a documentation set needs auditing for stale claims. Detects documentation drift by checking prose claims against repository facts, classifies every document as current-state (correctable), contract (report-only, human-owned) or ledger (skipped), and…
Skill Claude CodeCodex
Delegate a batch of independent, already-scoped task files (bugs, chores, small features) to parallel isolated agents, each sandboxed in its own git worktree, with a mandatory independent verification pass before anything is treated as mergeable. Use this whenever asked to "fix these bugs", "work through the backlog"…
Skill Claude CodeCodex
Review a code change against an explicit house rubric and severities, and produce a structured, severity-ranked markdown review, without editing or committing anything. Determines the review range (the current branch against its merge-base with the default branch, with a working-tree fallback), applies the…
Skill Claude CodeCodex
Packages the current state of a project into a handoff for a person: a business partner, a client, or a team member. Produces a document or a short message, in plain language, tuned to the reader, with internals and costs redacted when the reader is a client. Use this whenever the user wants to bring a person up to…
Skill Claude CodeCodex
Scaffold a portable, agent-optimized spec-driven work-tracking system into the current repository: AGENTS.md (global rules + agent reading protocol), a .tasks/ directory of atomic task files, and (by tier) ROADMAP.md, CHANGELOG.md, a validate.py checker, and thin CLAUDE.md/Cursor/Copilot pointers. Choose a footprint…
Skill Claude CodeCodex
Author one or more atomic, agent-ready task files for the .tasks/ work-tracking system, at a gold-standard bar. Turns a rough idea, a bug report, or a ROADMAP.md Feature into task files with honest touchedfiles, a real parent up-link, resolved dependson, and a mechanically-verifiable acceptance command, then…
Skill Claude CodeCodex
Draft a pull request description and a matching changelog entry from a branch's diff, in the target repo's own changelog format, without touching GitHub. Determines the PR's commit range (the current branch against its merge-base with the default branch), surveys what changed, then produces a structured PR body plus a…
Skill Claude CodeCodex
Safely consolidate one or more isolated git worktrees (for example left behind by parallel background agents, or from the fix-batch skill) into the main working tree, without committing or merging blindly. Use whenever asked to "reconcile the worktrees", "merge these agent branches", "bring the worktree changes back…
Skill Claude CodeCodex
Decide how much review a change has earned, before reviewing it. Selects quick, standard, or deep from stated signals (reviewable changed lines, directory spread, trust-boundary risk flags, blast radius, documentation-only scope), reports the signal table and the rule that fired, then runs house-review at the selected…
Skill Claude CodeCodex
Use when turning a raw idea, feature request, or bug into a persistent behavioral spec before any tasks or code. Drafts a scenario-based spec (problem, goals, non-goals, constraints, Given/When/Then scenarios with stable S-NNN ids, proposed surface, open questions), composes the spec-quality lens to self-check and…
Skill Claude CodeCodex
Use when closing a spec-driven feature or issue, or auditing whether an implementation actually matches its spec. Given a spec path, emits a section-by-section conformance matrix mapping every scenario and proposed surface element to conformed (with file:line or test evidence), diverged (what, why, and both sides), or…
Skill Claude CodeCodex
Use before implementation when a spec and its task decomposition must be checked for coding readiness. Applies a deterministic go/no-go gate for missing inputs, unresolved spec blockers, incomplete ordered task lists, spec-task contradictions, task-to-scenario traceability, scenario-to-test layer mapping…
Skill Claude CodeCodex
Use when drafting, reviewing, repairing, or validating scenario-based specs, product specs, implementation specs, Proposed Surface sections, Given/When/Then scenarios, Open Questions, or spec-quality checklists. A quality lens for spec well-formedness: keeps specs contract-level, observable, non-redundant, grounded in…
Skill Claude CodeCodex
Use after an implementation to derive runnable tests from an approved spec's Given/When/Then scenarios and a task's acceptance criteria, one faithful test per scenario tagged with its S-NNN id. Stops rather than deriving tests from a spec whose status is not approved. Discovers and matches the repo's existing test…
Skill Claude CodeCodex
Use when creating, modifying, reviewing, or deciding whether to add tests, fixtures, mocks, integration tests, end-to-end tests, smoke tests, or test plans in any codebase or language, including regression tests for bug fixes. Chooses the test layer and oracle: guides agents to pick the right test layer, avoid…
Skill Claude CodeCodex
Use before reconciling or landing an implementation to independently verify it against its approved spec and its task's acceptance criteria. Runs the declared verification commands and records each exact outcome, composes the spec-conformance lens so a contract divergence fails the run even when every command passes…
Skill Claude CodeCodex
Bootstrap a new or bare repository with a sane, stack-matched baseline, then hand off to init-worktracking for work tracking. Detects the language and package manager, then lays down .gitignore, .editorconfig, a linter/formatter config, a LICENSE, and a README stub, without clobbering anything that already exists. Use…
Skill Claude CodeCodex
Use when a defect, test failure, flaky test, or unexpected behavior needs its cause established before anyone writes a task file or a fix. Reproduces the report first, localizes the failure to the boundary where behavior diverges, then tests one hypothesis at a time and returns a deterministic verdict, so a run that…
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: