Runs multiple independent tasks concurrently by dispatching one focused agent per problem domain, completing batch workloads faster than sequential processing. Use when facing 2+ parallel tasks such as multiple failing test files, broken subsystems, or independent bugs that can be investigated and fixed simultaneously without shared state or sequential dependencies. Also useful when users ask to "run things in parallel", "work on multiple issues at the same time", handle "batch processing", or "multi-task" across independent problem domains.

Configure and operate Mise for deterministic developer environments. Use when installing runtime/tool versions, defining reusable tasks, managing layered environment variables, migrating from asdf/nvm/pyenv, or debugging mise.toml behavior in CI and local shells. Keywords: mise, mise.toml, tool versions, tasks, env, asdf migration, setup automation, dev environment.

Generate label matchers, line filters, log aggregations, and metric queries in LogQL (Loki Query Language) following current standards and conventions. Use this skill when creating new LogQL queries, implementing log analysis dashboards, alerting rules, or troubleshooting with Loki.

Complete Commander.js CLI framework guidance covering command structure, options, arguments, subcommands, action handlers, version management, and TypeScript integration. Use when: building CLI tools, parsing command-line arguments, implementing subcommands, handling options/flags, creating interactive CLIs, or migrating from other CLI frameworks. Keywords: Commander.js, CLI, command-line, arguments, options, flags, subcommands, action handlers, version, help text, TypeScript, yargs, meow, program, parseAsync, opts, args, variadic, required options, default values, custom help, error handling

Build authoritative real-time multiplayer servers with Colyseus 0.17+. Use when implementing rooms, schema state sync, client message validation, matchmaking, authentication, reconnection handling, or server-side anti-cheat constraints. Keywords: colyseus, room lifecycle, schema, multiplayer, websocket, matchmaking, onJoin, onLeave, onDrop, allowReconnection.

Enforce AWS CDK security and compliance controls with cdk-nag. Use when adding rule packs, triaging findings, writing justified suppressions, integrating checks in CI/CD, or preventing insecure infrastructure patterns in CDK stacks.

Guides TDD (test-driven development) with red-green-refactor workflows, test-first feature delivery, bug reproduction through failing tests, behavior-focused assertions, and refactoring safety. Use when writing unit tests, implementing new functions, adding test coverage, fixing regressions, changing APIs, or restructuring code under test — especially when a user says "write tests first", "TDD", or "test before code".

Submit, amend, and review Gerrit changes using git-review CLI. Use when asked to submit a patchset, download a change, rebase a change request, check CR status, or manage code reviews in Gerrit.

Create, update, and organize Google Calendar events and schedules. Check availability, book time, and manage calendars. Use when asked to schedule a meeting, set up an appointment, book a call, check gcal, or manage calendar events.

Read, write, and format Google Sheets spreadsheets. Manage cell values, ranges, formulas, pivot tables, and charts. Use when asked to update a gsheet, edit a Google spreadsheet, add formulas, or work with spreadsheet data.

Create and modify Google Docs documents. Read content, insert tables, apply heading styles, and manage formatting. Use when asked to edit a gdoc, write a Google document, update a doc, or format document content.

Use when a learner wants to start, work through, or be guided or tutored through the Skills in 30 minutes lesson — their first Tessl skill. Walks them one step at a time through finding the bundled commit-conventions skill on disk and triggering it on a real diff in their own repository, running a check after each step before moving on. Triggers on asks like guide me through skills in 30 minutes, start the first lesson, or walk me through my first skill.

Use when a learner wants to start, work through, or be guided or tutored through the Writing your first skill lesson — authoring their own commit-conventions skill from scratch. Walks them one step at a time through scaffolding a skill with the Tessl CLI, writing its SKILL.md, linting it against the Agent Skills spec, and installing it from their local filesystem so their agent fires it on intent, running a check after each step before moving on. Triggers on asks like guide me through writing my first skill, start lesson 2, help me author a skill, or walk me through scaffolding and linting a skill.

Use when a learner wants to start, work through, or be guided through the "Skills vs MCP, and context files" lesson (Skill Foundations, lesson 3). Walks them through it as a guided read in their own repository, opening their context files, comparing a skill with an MCP server, and applying a two-question rule to place any piece of guidance. Triggers on asks like "guide me through the skills vs MCP lesson", "walk me through context files vs skills", "tutor me on when to use a skill, a context file, or MCP", or "help me work out where this instruction belongs".