Claude Mods

Modern R for data analysis and statistics — tidyverse-first (dplyr, tidyr, ggplot2, native |> pipe), with base R and data.table as alternatives. Triggers on: R, Rstats, tidyverse, dplyr, tidyr, ggplot2, pivot/join/group, data.table, purrr map, broom, renv, Quarto.

Generate PhD-level expert-agent prompt files (.md) for Claude Code - authoring, not runtime. For spawning parallel RUNTIME workers use fleet-worker/fleetflow (via parallel-ops). Triggers: spawn agent, create agent file, generate expert prompt, new agent persona.

Go development patterns, concurrency, error handling, testing, and project structure. Use for: golang, go, goroutine, channel, context, errgroup, go test, go mod, go build, interface, generics, table-driven tests, worker pool, sync.Mutex, sync.WaitGroup, pprof, go vet, golangci-lint, go workspace, functional options, middleware, http handler.

Inter-session pmail - send and receive messages between Claude Code sessions running in different project directories. Uses global SQLite database at ~/.claude/pmail.db. Triggers on: mail, pmail, send message, check mail, inbox, inter-session, message another session, pigeon.

Code review with semantic diffs, expert routing, and auto-TaskCreate. Triggers on: code review, review changes, check code, review PR, security audit.

Claude Desktop session toolbox: transfer sessions between accounts, recover an old session via a picker + AI handover brief, rebind cwd after a folder move, audit broken bindings, render an in-chat picker. Triggers on: summon, transfer/recover session, session picker, rebind, session doctor.

Author, index, and lint Architecture Decision Records — append-only memory that recovers the WHY behind a system's shape. Triggers on: adr, architecture decision record, decision log, record this decision, supersede an adr, why was this decided, adr template, next adr number.

Atom of Thoughts (AoT) reasoning - decompose complex problems into atomic units with confidence tracking and backtracking. For genuinely complex reasoning, not everyday questions. Triggers on: atomise, complex reasoning, decompose problem, structured thinking, verify hypothesis.

Patterns for building production-quality CLI tools with predictable behavior, parseable output, and agentic workflows. Triggers: cli tool, command line tool, build cli, cli patterns, agentic cli, cli design, typer cli, click cli.

Deep explanation of complex code, files, or concepts. Dispatches skill-preloaded agents, uses structural search, generates mermaid diagrams. Triggers on: explain, deep dive, how does X work, architecture, data flow.

Git + worktree orchestrator: status survey, per-worktree triage, commits, PRs, branches, releases, rebases — reads inline, writes to a background agent. Triggers on: git status, anything to commit, anything to push, commit, push, create PR, rebase, release, tag, changelog, worktree, land worktrees.

Autonomous single-metric improvement loop - modify, measure, keep or discard, repeat (Karpathy autoresearch). One session, git as memory, bisect-on-regression. Triggers: iterate, improve autonomously, run overnight, keep improving, improvement loop, iterate until done.

Log analysis and JSONL processing - structured extraction, cross-log correlation, timeline reconstruction, pattern search

macOS workstation diagnostics: kernel panics, failing drives, launchd startup audit, wake reasons, TCC denials, APFS snapshots. Triggers on: mac is slow, won't boot, kernel panic, login loop, drive failing, launchd, TCC permissions, Full Disk Access, Gatekeeper, sysdiagnose.

Model Context Protocol server development, tool design, resource handling, and transport configuration. Use for: mcp, model context protocol, mcp server, mcp tool, mcp resource, fastmcp, mcp transport, stdio, sse, streamable http, mcp inspector, tool handler, mcp prompt.

Cross-platform network troubleshooting (Windows, macOS, Linux) via local or remote shell. Use for: DNS broken, can't resolve hostnames, nslookup/dig works but apps fail, NRPT, WFP, scutil, /etc/resolver, systemd-resolved, /etc/resolv.conf, NetworkManager, VPN DNS leak residue (ProtonVPN/Mullvad/WireGuard/AnyConnect), AV/firewall blocking DNS or DoH, Tailscale DNS interaction, intermittent connectivity, remote diagnostics over SSH, mapped network drive Disconnected, SMB share unreachable, \\server\share, NAS by hostname fails but IP works, single-label hostname, LLMNR/NetBIOS, VPN blocks LAN DNS, System error 5 on net use.

Assess, validate, and adopt the Open Knowledge Format (OKF) across markdown+frontmatter knowledge bases. Triggers on: OKF, open knowledge format, knowledge bundle, frontmatter conformance, validate frontmatter, markdown knowledge base, adopt OKF, is this repo OKF-ready, index.md log.md.

Quick reference for common SQL patterns, CTEs, window functions, and indexing strategies. Triggers on: sql patterns, cte example, window functions, sql join, index strategy, pagination sql.

Generate tests with skill-preloaded routing, framework detection, and auto-TaskCreate. Triggers on: generate tests, write tests, testgen, create test file, add test coverage.

Vue 3 development patterns, Composition API, Pinia state management, Vue Router, and Nuxt 4. Use for: vue, vuejs, composition api, pinia, vue router, nuxt, nuxt4, nuxt3, script setup, composable, reactive, defineProps, defineEmits, defineModel, v-model, provide inject, vue3.

Authentication and authorization patterns - JWT, OAuth2, sessions, RBAC, ABAC, passkeys, MFA, identity-aware proxies, and Better Auth. Use for: authentication, jwt, oauth2, session, login, rbac, abac, passkey, mfa, totp, api key, token, cookie, csrf, bearer token, refresh token, oidc, cloudflare access, zero trust, Cf-Access-Jwt-Assertion, AUD tag, service auth, better auth.

Defensive Bash scripting for production automation, CI scripts, and agent-facing tools. Triggers on: bash, shell script, defensive bash, bash strict mode, set -euo pipefail, set -Eeuo pipefail, shellcheck, trap, IFS, cleanup trap, mktemp, getopts, argument parsing, exit codes, stream separation, stdout stderr, quoting, word splitting, pipefail, subshell, CI script, shell footgun, bats, shfmt, POSIX, portable shell.

Hono on Cloudflare Workers - composition, middleware, typed bindings, validation, RPC, streaming, testing. Use for: hono, hono middleware, app.route, hono rpc, c.env bindings, onError, zValidator, vitest-pool-workers, spa fallback worker.

Design and safely run OUTER loops - scheduled discover-triage-implement-verify-escalate agent loops. Risk-tier ladder (L1 report -> L3 unattended), STATE/run-log/budget spine, kill switch, pattern catalog. Triggers: outer loop, scheduled/autonomous agent loop, PR watch, CI watch, dep-bump loop, run on a schedule, kill switch, risk tier.

Performance profiling and optimization orchestrator - diagnoses symptoms, dispatches skill-preloaded profiling agents, manages before/after comparisons. Triggers on: performance, profiling, flamegraph, pprof, py-spy, clinic.js, memray, heaptrack, bundle size, webpack analyzer, load testing, k6, artillery, vegeta, locust, benchmark, hyperfine, criterion, slow query, EXPLAIN ANALYZE, N+1, caching, optimization, latency, throughput, p99, memory leak, CPU spike, bottleneck.

Publish Python packages to PyPI via OIDC Trusted Publishing (PEP 740 attestations, gh-action-pypi-publish) instead of stored tokens. Use for: invalid-publisher errors, pending-publisher 404s, uv publish/twine, TestPyPI, environment approval gates, and rotating/auditing publish tokens.

Quick reference for RESTful API design patterns, HTTP semantics, caching, and rate limiting. Triggers on: rest api, http methods, status codes, api design, endpoint design, api versioning, rate limiting, caching headers.

Rust development patterns, ownership, async, error handling, and ecosystem. Use for: rust, cargo, ownership, borrow checker, lifetime, tokio, serde, trait, Result, Option, async rust, crate, derive, impl, enum, pattern matching, Arc, Mutex, Send, Sync, thiserror, anyhow, clap, axum, sqlx, reqwest, rayon, tracing.

Project scaffolding - generate boilerplate for common project types with best-practice defaults. Use for: scaffold, boilerplate, template, new project, init, create project, starter, setup, project structure, directory structure, monorepo, microservice, API template, web app template, CLI tool template, library template.

Set tool permissions for Claude Code. Configures allowed commands, rules, and preferences in .claude/ directory. Triggers on: setperms, init tools, configure permissions, setup project, set permissions, init claude.

Technical debt detection and remediation. Run at session end to find duplicated code, dead imports, security issues, and complexity hotspots. Triggers: 'find tech debt', 'scan for issues', 'check code quality', 'wrap up session', 'ready to commit', 'before merge', 'code review prep'. Always uses parallel subagents for fast analysis.

Astro framework patterns, islands architecture, content collections, rendering strategies, and deployment. Use for: astro, islands architecture, content collections, astro cloudflare, view transitions, partial hydration, astrojs, SSG, SSR, hybrid rendering, astro adapter.

CI/CD pipeline patterns with GitHub Actions, release automation, and testing strategies. Use for: github actions, workflow, CI, CD, pipeline, deploy, release, semantic release, changesets, goreleaser, matrix, cache, secrets, environment, artifact, reusable workflow, composite action.

Color for developers: color spaces, accessibility contrast, palette generation, CSS color functions, design tokens, dark mode. Triggers on: color, palette, contrast, WCAG, APCA, OKLCH, color-mix, dark mode colors, design tokens, CVD, color blind, P3, sRGB.

Systematic debugging methodology, language-specific debuggers, and common scenario playbooks. Use for: debug, debugging, bug, crash, hang, memory leak, race condition, deadlock, bisect, reproduce, root cause, breakpoint, profiling, performance issue, segfault, stack trace, core dump.

Landing discipline for parallel work: sequential test-gated landing queue, pre-land scrub, auto-rebase of in-flight lanes, fleet status, one-shot revert. Native primitives spawn; fleet-ops lands. Triggers: landing queue, land branches, merge queue, test gate, fleet status, land agent-team/background-agent branches, sequential merge.

Nginx configuration, reverse proxy, SSL/TLS, load balancing, and performance tuning. Use for: nginx, reverse proxy, load balancer, proxy_pass, ssl certificate, lets encrypt, web server, location block, upstream, server block, nginx config, certbot, hsts, gzip, rate limiting.

Pre-push safety gate for any git push to a remote (GitHub, GitLab, Bitbucket, self-hosted). Runs gitleaks + regex-layer secret scan, forbidden-file check, divergence check, size warning, and requires explicit confirm before pushing. Refuses on any secret hit. Triggers on: push to origin, push to github, push to remote, git push, can we push, safe to push, ready to push, pre-push check, push-gate.

React development patterns, hooks, state management, Server Components, and performance optimization. Use for: react, hooks, useState, useEffect, jsx, tsx, next.js, nextjs, app router, server components, RSC, zustand, react query, component patterns, react testing library, error boundary, suspense, react 19.

Transparent-PNG cutouts / background removal for flat illustration, sticker, cartoon and avatar art — rembg (isnet-anime) with a deterministic fallback ladder for the cases ML drops. Triggers on: rembg, remove background, background removal, transparent PNG, cutout, die-cut sticker, isnet-anime, alpha matte, chroma/colour key, remove drop shadow, avatar cutout, flat illustration cutout.

yt-dlp media acquisition layer feeding ffmpeg-ops: format selection avoiding post-download transcodes, clip-at-download, cookies/auth, channel archive sync, SponsorBlock, subtitles, failure triage (403s, nsig). Triggers on: yt-dlp, download video/playlist/channel, youtube to mp3.

Evaluate current session for skill-worthy workflows and create reusable skills. Triggers on: auto-skill, create skill from session, save workflow, capture this as a skill.

Docker containerization patterns, Dockerfile best practices, multi-stage builds, and Docker Compose. Use for: docker, Dockerfile, docker-compose, container, image, multi-stage build, docker build, docker run, .dockerignore, health check, distroless, scratch image, BuildKit, layer caching, container security.

Comprehensive ffmpeg/ffprobe media processing: transcode, cut/trim/concat, color grading, loudness normalization, subtitles, GIFs, HLS packaging, hardware encoding, and quality gates (VMAF). Triggers on: ffmpeg, ffprobe, transcode, compress/convert video, extract audio, color grade, hls.

Generative art programming - three.js scenes, p5.js sketches, SVG generation, GLSL shaders, procedural algorithms, and color for creative coding. Use for: generative art, creative coding, three.js, p5.js, SVG, GLSL, shader, noise, perlin, simplex, flow field, particle system, SDF, ray marching, procedural, L-system, voronoi, delaunay, cellular automata, wave function collapse, instanced mesh, post-processing, bloom, WebGL, canvas, fragment shader, vertex shader, FBM, domain warping.

GitHub remote operations: repo creation, metadata, releases, issue/PR management with preview-before-send, and read-only security auditing. Triggers on: push to github, ship release, gh release, audit github repo, gh issue, gh pr, merge PR, branch protection, secret scanning, SECURITY.md.

Analyze Claude Code session logs and surface productivity improvements. Extracts thinking blocks, tool usage stats, error patterns, debug trajectories - then generates friendly, actionable recommendations. Triggers on: introspect, session logs, trajectory, analyze sessions, what went wrong, tool usage, thinking blocks, session history, my reasoning, past sessions, what did I do, how can I improve.

Mapbox GL JS v3 (web) toolkit: custom markers, symbol/geojson layers, clustering, style expressions, 3D terrain/fill-extrusion, heatmaps, choropleths, camera animation, and performance gotchas. Use for any Mapbox GL JS work — markers, layers, style, 3D, or headless map verification.

Convert local documents to Markdown using Microsoft's markitdown CLI. Best for: PDF, Word, Excel, PowerPoint, images (OCR), audio. Can fetch URLs but Jina is faster for web. Triggers on: convert to markdown, read PDF, parse document, extract text from, docx, xlsx, pptx, OCR image, local file.

Find and display recent screenshots. Triggers: screenshot, check screenshot, show screenshot, recent screenshot, last screenshot.

SQLite across every host and engine - query performance, concurrency, schema, feature modules, operations. Triggers on: sqlite, slow query, EXPLAIN QUERY PLAN, query plan, SCAN vs SEARCH, covering index, index not used, rows read, rows_read, sql_duration_ms, ANALYZE, sqlite_stat1, LIKE performance, database is locked, SQLITE_BUSY, WAL, busy_timeout, STRICT tables, type affinity, foreign_keys, VACUUM, integrity_check, fts5, trigram, json_extract, D1, cloudflare d1, wrangler d1, node:sqlite, better-sqlite3, bun:sqlite, aiosqlite, libsql, turso, migration, d1 batch, read replication, sessions api, d1 bookmark, migration timeout.

Cypress end-to-end and component testing operations - selector/retry-ability strategy, cy.intercept network stubbing, cy.session auth, component vs e2e, flake diagnosis, CI, Test Replay. Use for: cypress, e2e test, component test, cy.get, cy.intercept, cy.session, data-cy, data-test, retry-ability, flake, flaky test, cypress.config, cy.mount, Test Replay, custom commands, fixtures.

Laravel framework patterns, Eloquent ORM, authentication, queues, and testing. Use for: laravel, eloquent, artisan, blade, php, sanctum, livewire, inertia, pest, phpunit, forge, vapor, queue, middleware, migration, factory, seeder.

Read and inspect LevelDB stores - especially Chromium/Electron app state (Local Storage, IndexedDB, Session Storage). Triggers on: leveldb, .ldb files, IndexedDB, Local Storage, Chromium storage, Electron app state, claude.ai cache, browser forensics, decode app state, claude desktop state.

Framework and language migration patterns - version upgrades, breaking changes, dependency audit, safe rollback. Use for: migrate, migration, upgrade, version bump, breaking changes, deprecation, dependency audit, npm audit, pip-audit, codemod, jscodeshift, rector, rollback, semver, changelog, framework upgrade, language upgrade, React 19, Vue 3, Next.js App Router, Laravel 13, Angular, Python 3.14, Node 26, TypeScript 6, Go 1.26, Rust 2024, PHP 8.5.

Audit any repo against the agentic-quality doctrine — score entry docs, structure, and enforcement gates, then map each finding to its fix. Triggers on: repo doctor, repo audit, agentic quality, is this repo agent-friendly, doc drift, stale AGENTS.md, monorepo structure, nested CLAUDE.md.

Cross-language testing strategies and patterns. Triggers on: test pyramid, unit test, integration test, e2e test, TDD, BDD, test coverage, mocking strategy, test doubles, test isolation.

Application/game-scale three.js: ES modules, GLTF pipeline (DRACO/KTX2/meshopt), AnimationMixer, physics (rapier/cannon-es), react-three-fiber, and performance at scale (InstancedMesh, LOD, draw calls). Triggers on: three.js, GLTFLoader, r3f, game loop, WebGL memory leak, boids.

Comprehensive Windows workstation operations - diagnose slow boot, failing drives, BSOD crashes, startup bloat, event logs. Use for: Windows is slow, slow bootup, won't boot, blue screen, BSOD, kernel crash, drive failing, SMART errors, disk errors, Event 41, Event 129, storahci reset, BugCheck, CRITICAL_PROCESS_DIED, crash dump, MEMORY.DMP, minidump, msconfig, services.msc, registry Run keys, StartupApproved, scheduled tasks at logon, slow login, high CPU at boot, disable startup app, unexplained UAC prompt, what asked for admin, prefetch forensics, BAM, process attribution, Security 4688. A drive letter alone does not name the skill: mapped network drive, SMB, UNC, NAS route to net-ops.

Craft CMS 5 development - content modeling, Twig templating, element queries, GraphQL, plugins, and the Craft 4-to-5 Matrix-as-entries change. Use for: craft cms, craftcms, craft 5, twig, pixel & tonic, matrix field, entry types, sections, element query, eager loading, blitz, project config, headless craft, craft graphql, craft plugin, craft 4 to 5 upgrade.