Use before implementing any non-trivial logic — algorithms with subtle invariants, state machines, parsers/evaluators, numerical or financial formulas, concurrency, or anything where correct-looking code is routinely subtly wrong. Write a short language-agnostic plan (data shapes + invariants, control flow, edge cases, interface contract) and check it before generating code. Triggers on "implement this algorithm", "write a function that…", "build a parser/state machine/scheduler", "compute this formula", reworking tricky logic, or any coding task where the hard part is getting the logic right rather than wiring things together. Skip it for CRUD, glue, config, and plumbing where the code is already the spec. Apply this whenever the expensive risk is a logic bug — an off-by-one, a missed null, a wrong ordering, a broken invariant — not just when the user says "pseudocode".

Use when looking up the latest Docusaurus documentation at https://docusaurus.io/docs — retrieving config option references, plugin/preset APIs, MDX and markdown-feature syntax, sidebar and routing setup, theming, and deployment instructions. Triggers on tasks involving Docusaurus APIs, markdown/MDX features, configuration options, sidebars, or best practices.

Finds open CFPs relevant to Baruch across Java/AI/developer conferences and maintains persistent CFP state (sent/dismissed/remind) in cfp-state.json. Use when Baruch asks about upcoming conferences, call for papers, speaking opportunities, CFP deadlines, or where to submit a talk proposal.

Cadence wrapper that runs check-cfps on its own schedule: refresh open CFP data, apply Sessionize verification, update cfp-state.json, emit an observable-silence cursor marker. Triggers: 'cfp sync', 'sync cfps', 'nightly cfp sync', 'refresh cfps nightly'.

Answer questions about Bun — the all-in-one JavaScript/TypeScript toolkit — and write code using its runtime, package manager, test runner, and bundler. Use when developers call Bun-native APIs (`Bun.serve`, `Bun.file`, `Bun.write`, `Bun.spawn`, `Bun.$` shell, `Bun.SQL`, `Bun.RedisClient`, `Bun.build`, `HTMLRewriter`); import `bun:*` modules (`bun:test`, `bun:sqlite`, `bun:ffi`, `bun:jsc`); run CLI commands (`bun install`/`add`/`run`/`test`/`build`, `bunx`, `bun create`, `bun --compile`); configure `bunfig.toml`, `bun.lock`, workspaces, catalogs, overrides, isolated installs, trustedDependencies, or lifecycle scripts; bundle with loaders, plugins, or macros; write `bun:test` tests (`mock`, `spyOn`, `mock.module`, snapshots, coverage); or need Node.js compatibility, JSC vs V8 differences, or migration from npm/yarn/pnpm/jest/vitest.

Nuxt i18n internationalization module for locale routing, lazy-loaded translations, SEO, browser detection, and multi-domain setups. Use when working with @nuxtjs/i18n, locale switching, translated routes, or i18n composables.

Use when writing or reviewing MSSQL/T-SQL, creating stored procedures, designing table schemas, writing views, building migrations, defining custom types, or architecting a SQL Server application database. Also use when writing RAISERROR patterns, CHECK constraints with scalar functions, base/subtype table hierarchies, composite key designs, role-scoped views with row-level security, or idempotent DDL scripts. If you are touching MSSQL for an application database, use this skill. Not for PostgreSQL, MySQL, Oracle, or SQLite — patterns are SQL Server-specific.

Comprehensive PostgreSQL reference for developers and DBAs covering versions 14–18. Use whenever the user asks about PostgreSQL syntax, DDL/DML/DQL, joins, LATERAL, CTEs, window functions, GROUPING SETS, DISTINCT ON, RETURNING, ON CONFLICT, PL/pgSQL, functions, procedures, triggers, views, materialized views, indexes (B-tree/GIN/GiST/BRIN/Hash/Bloom), MVCC, VACUUM, autovacuum, WAL, TOAST, partitioning, replication (streaming/logical), backup, PITR, HA (Patroni/repmgr), pgBouncer, EXPLAIN ANALYZE, RLS, roles, extensions (pgvector, PostGIS, TimescaleDB, Citus, pg_trgm, pg_cron), JSON/JSONB, full-text search, UUID, timestamptz, COPY, system catalogs, collations, large objects, cursors, GUC, or any Postgres administration, performance, security, replication, backup, or recovery topic.

Use when someone asks to review, proofread, or lint documentation for errors, typos, or quality issues. Checks spelling, grammar, header level consistency, placeholder documentation in examples, and ensures all docs have a Description and at least one example unless clearly a reference page. Useful for documentation quality checks, markdown review, or checking for typos.

Write clear, testable acceptance criteria for user stories and feature delivery; use when defining done conditions, creating measurable requirements, applying INVEST checks, documenting negative scenarios, and aligning product, engineering, and QA on expected outcomes.

Ready up Jira tickets for refinement by gathering context from linked incidents, populating a YAML template following the project's 'ready for refinement' standard, validating against a JSON schema, and generating a structured markdown document. Use when asked to 'ready up', 'ready a ticket', 'prepare for refinement', or 'write up PROJ-NNN'. Keywords: jira, ticket, refinement, ready, backlog, YAML template, JSON schema, context, conditions of satisfaction, acceptance criteria.

MoSCoW prioritization: categorize requirements into Must Should Could Won't tiers using failure-focused test. Apply for backlog refinement, feature prioritization, sprint planning, release scope decisions, rebalance Must tier, create Won't items with revisit dates, adjudicate stakeholder disagreements, produce decision log. Keywords: prioritization, backlog, refinement, sprint planning, release scope, rebalance, stakeholder, decisions, MVP, scope control.

Expert assistant for chezmoi dotfiles management. Use when the user is managing dotfiles with chezmoi: adding files, creating templates, encrypting secrets, writing run scripts, syncing across machines, or diagnosing why changes aren't applying. Trigger phrases: 'add to chezmoi', 'make a template', 'chezmoi apply', 'encrypt with chezmoi', 'run script on first apply', 'sync dotfiles to new machine', 'chezmoi diff shows unexpected changes', 'source attribute', 'dot_ prefix', 'once_ script'.

Use this skill when managing packages, external dependencies, binaries, or CLI tools in a chezmoi dotfiles repository. Handles adding/updating/removing packages in .chezmoidata/packages.yaml, creating .chezmoiexternals/ organized files, pinning versions with Renovate automation, and selecting the correct package ecosystem (Homebrew, mise, Python, Docker, chezmoi externals).

Validates emotions, maintains empathetic tone, avoids premature reassurance, and prevents repetitive or hollow responses during extended emotional exchanges. Use when the person is expressing grief, pain, fear, hopelessness, anger, or other intense emotions across multiple turns — especially when the conversation extends into prolonged emotional territory. Addresses LLM behavioral failure modes (strategy preference collapse, premature escalation, grief-flattening), not clinical intervention. Not a substitute for professional mental health support.

Produce premier client-ready proposals, capability decks, and case studies for Metis Strategy BD work. Use whenever the user asks to create, build, draft, rebuild, or iterate on a proposal, capabilities deck, case study, BD follow-up, or pitch document. Trigger on: "proposal," "premier proposal," "capabilities deck," "capabilities piece," "case study," "BD follow-up," "build the proposal," or "proposal" with BD context (transcript, prospect, champion, buyer, SVP, CDO, CIO). Also trigger when source material (transcript, PPTX, notes) is provided and a polished client-ready output is requested. Output is a 16:9 landscape PDF (13.33" x 7.5", 10-25 pages) with full-bleed photography, branded graphic devices, and ReportLab layout. Do NOT use for: PowerPoint decks (metis-pptx); whitepapers (metis-whitepaper); one-pagers or internal reports (metis-pdf-creator); SOWs/MSAs (metis-legal-drafting); capability maps (metis-capability-map).

Creates Postgres INSERT triggers that fire Edge Functions for document chunking and embedding generation. Configures the ingestion pipeline from raw document insert to vector storage. Use when building RAG ingestion, embed-on-insert pipelines, database-driven document ingestion, or automated embedding workflows.

Executes EXPLAIN ANALYZE via MCP to debug slow queries, identify missing indexes, detect sequential scans, and optimize query plans. Use when debugging slow SQL, analyzing query plans, finding unused indexes, optimizing Postgres queries, or investigating index-not-used issues.

Implements server-side auth session management with HTTP-only cookie synchronization for Next.js, SvelteKit, and other SSR frameworks. Depends on PKCE auth flow. Use when implementing SSR authentication, server-side session sync, HTTP-only auth cookies, Next.js Supabase auth, or SvelteKit Supabase auth.

Professional UI/UX design skill for React, Next.js, Tailwind CSS, React Native, and Flutter. Use when the user asks to create or polish UI components (modals, forms, tables, charts, navbars, sidebars, cards), design landing pages, build dashboards or admin panels, set up SaaS or mobile app screens, review or fix layout and accessibility issues, configure dark mode or responsive breakpoints, or establish a design system with tokens and component specs. Capabilities include: creating design-system token files and MASTER.md artifacts, generating responsive Tailwind layouts, scaffolding page-level component hierarchies, reviewing and fixing UI accessibility (a11y, WCAG), implementing React Native safe-area screens, and configuring Flutter ThemeData. Outputs design-system files (MASTER, page overrides, tokens, component specs) plus stack-faithful code. Do NOT use for: pure backend-only work with no UI impact, or inventing branding assets you do not have rights to use.

Groups plan phases and tasks into dependency-ordered waves for parallel subagent execution via git worktrees. Builds a task dependency DAG, assigns wave numbers via topological sort, emits a living wave document that tracks status as work lands, and updates wave progress when tasks complete. Use when asked to: group tasks into waves, plan parallel execution, schedule worktrees, create a wave breakdown, wave planning, dependency grouping, update wave statuses, parallel subagents, which tasks can run in parallel.

Enforce safety constraints on system commands before execution. Use this skill whenever the agent needs to run shell commands, terminal operations, or system-level actions. It classifies commands into BLOCKED, CONFIRM, or ALLOWED and prevents dangerous operations from executing.

Standardize Python project setup and validation with uv, ruff, typos, and mypy. Use when creating a new Python project, normalizing an existing repository, adding Python quality tooling, or driving Python code to a clean lint, spelling, formatting, and type-check state through a repeatable uv-based workflow.

Creates high-quality agent skills by running the official Claude skill creator plugin and then applying a structured set of enhancement phases covering use-case design, frontmatter completeness, body structure, writing quality, and progressive disclosure architecture. Use this skill when the user wants to create a new skill, improve an existing SKILL.md, or asks "how do I write a good skill", "help me make a skill for X", "review my SKILL.md", or "turn this workflow into a skill". Trigger even if the user just says "let's make a skill" or describes a workflow they want to capture.