Skill Claude CodeCodex
Programmatic hunk selection for the jj (Jujutsu) VCS. Select individual diff hunks with a query language instead of an interactive TUI, then split, commit, squash, diffedit, restore, or absorb them. Use when splitting a jj commit into logical pieces, committing or squashing only part of the working copy, undoing…
Skill Claude CodeCodex
Jujutsu (jj) version control system - a Git-compatible VCS with novel features. Use when working with jj repositories, managing stacked/dependent commits, needing automatic rebasing with first-class conflict handling, using revsets to select commits, or wanting enhanced Git workflows. Triggers on mentions of 'jj'…
Skill Claude CodeCodex
Skill "jq" from dashed/claude-marketplace, covering jq - command-line json processor, prerequisites, install, macos and debian/ubuntu.
Skill Claude CodeCodex
The k3s lightweight CNCF-certified Kubernetes distribution shipped as a single binary that bundles containerd, flannel, CoreDNS, Traefik, ServiceLB (Klipper), local-path-provisioner, and metrics-server. Use when installing or running a lightweight Kubernetes cluster, bootstrapping a single-node or HA k3s control…
Skill Claude CodeCodex
Author and operate Kubernetes workloads with kubectl and YAML manifests — the kubectl CLI plus core resource authoring (Pods, Deployments, StatefulSets, Jobs/CronJobs, Services, Ingress, ConfigMaps/Secrets, PV/PVC, RBAC). Use when writing or debugging Kubernetes manifests, running kubectl…
Skill Claude CodeCodex
Managing Linear issues, projects, and teams. Use when working with Linear tasks, creating issues, updating status, querying projects, or managing team workflows.
Skill Claude CodeCodex
Write mathematics in a long-form, understanding-focused style with detailed proofs and rich exposition. Use when explaining mathematical concepts, writing proofs, tutoring math, creating educational math content, or when the user asks for mathematical explanations. Inspired by Jay Cummings' Real Analysis and…
Skill Claude CodeCodex
Generate, validate, and fix diagrams from Mermaid markup using the mermaid-cli (mmdc) tool. Use when creating flowcharts, sequence diagrams, class diagrams, state diagrams, ER diagrams, Gantt charts, pie charts, mindmaps, or any Mermaid-supported diagram type. Also use when validating, verifying, or fixing Mermaid…
Skill Claude CodeCodex
Install and maintain a "model routing" section in a project's CLAUDE.md that teaches Claude Code which model to use for which work — including delegating to GPT models via the Codex CLI. Use when the user wants to add model-picking guidance to CLAUDE.md, set up Codex/GPT as a delegation target or fallback, route…
Skill Claude CodeCodex
Create and edit Obsidian Bases (.base files) with views, filters, formulas, and summaries. Use when working with .base files, creating database-like views of notes, or when the user mentions Bases, table views, card views, filters, or formulas in Obsidian.
Skill Claude CodeCodex
Create and edit Obsidian Flavored Markdown with wikilinks, embeds, callouts, properties, and other Obsidian-specific syntax. Use when working with .md files in Obsidian, or when the user mentions wikilinks, callouts, frontmatter, tags, embeds, or Obsidian notes.
Skill Claude CodeCodex
Skill "oxfmt" from dashed/claude-marketplace, covering oxfmt — js/ts (and friends) formatter, ⚠️ read this first: bare oxfmt rewrites your files, the differences that will change your diff, everyday commands and what oxfmt actually formats.
Skill Claude CodeCodex
Skill "oxlint" from dashed/claude-marketplace, covering oxlint — javascript/typescript linter, the five things that surprise people, prerequisites, everyday commands and plugins — the big footgun.
Skill Claude CodeCodex
Browser automation with Playwright for Python. Use when testing websites, taking screenshots, filling forms, scraping web content, or automating browser interactions. Triggers on browser, web testing, screenshots, selenium, puppeteer, or playwright.
Skill Claude CodeCodex
PostgreSQL server administration & operations — DBA work on a running cluster. Use when configuring a server (postgresql.conf, ALTER SYSTEM, reload vs restart, GUCs), managing roles & privileges (CREATE ROLE, GRANT/REVOKE, DEFAULT PRIVILEGES, predefined roles, membership), authentication (pghba.conf, scram-sha-256…
Skill Claude CodeCodex
PostgreSQL extension management and the bundled contrib catalog. Use when running CREATE EXTENSION / ALTER EXTENSION ... UPDATE / DROP EXTENSION, listing extensions (\dx, pgavailableextensions), or choosing which contrib module enables a feature — FDWs (postgresfdw, dblink, filefdw), trigram/fuzzy search (pgtrgm…
Skill Claude CodeCodex
PostgreSQL query & performance tuning — reading EXPLAIN / EXPLAIN ANALYZE plans, choosing and designing indexes, fixing planner row-estimate errors with statistics, and diagnosing MVCC bloat / VACUUM. Use when a query is slow, when reading an EXPLAIN/EXPLAIN ANALYZE plan (seq vs index vs bitmap scan…
Skill Claude CodeCodex
The PostgreSQL SQL dialect and data types that set Postgres apart from generic SQL. Use when writing or debugging Postgres-specific SQL — upsert (INSERT ... ON CONFLICT DO UPDATE/NOTHING), RETURNING (incl. OLD/NEW), MERGE, CTEs (WITH/MATERIALIZED/recursive/data-modifying), window frames, GROUPING SETS/CUBE/ROLLUP…
Skill Claude CodeCodex
Skill "psql" from dashed/claude-marketplace, covering psql — postgresql interactive terminal, when to use this skill, prerequisites & version note, the psql cli at a glance and connecting.
Skill Claude CodeCodex
Datadog CLI (pup) for observability, monitoring, logs, APM, security, and infrastructure. Use when querying Datadog metrics, searching logs, managing monitors, investigating incidents, checking SLOs, running APM traces, managing dashboards, or performing any Datadog API operation via CLI. Triggers on mentions of pup…
Skill Claude CodeCodex
The pytest testing framework and its Python-specific idioms — the things that set pytest apart from unittest and generic testing. Use when writing, running, debugging, or configuring Python tests with pytest — plain assert (rewritten for rich introspection), dependency-injected @pytest.fixture (scopes, autouse…
Skill Claude CodeCodex
Measure per-function cyclomatic and cognitive complexity in Python to find refactor targets, using ruff's C901 and complexipy with no project install. Use when asking which functions to refactor or clean up first, whether a function is too complex, where the worst code in a module or package is, when triaging a legacy…
Skill Claude CodeCodex
React and Next.js performance optimization guidelines from Vercel Engineering. Use when writing, reviewing, or refactoring React/Next.js code for optimal performance. 62 rules across 8 categories covering waterfalls, bundle size, server-side, re-renders, and rendering. Triggers on React components, Next.js pages, data…
Skill Claude CodeCodex
A fast, gitignore-aware command-line tool for recursively searching file contents by regular expression — a smarter, faster grep. Use when searching code or text for a pattern across a directory tree, filtering matches by file type or glob, listing/counting matching files, doing search-and-replace previews, or running…