AI Engineering

Happier Plan creates or amends a Happier repository implementation plan when the user explicitly requests it. Use it for approved planning changes, not for implementation or routine status updates.

Happier Profile and Optimize helps profile and optimize measured costs like slow startup, jank, hangs, memory use, render churn, or slow queries. It frames the phase and metric, picks the right instrument, and verifies a speedup without over-claiming.

Happier Session Control manages Happier sessions and execution runs through the CLI JSON contract. Use it to list, inspect, send messages, wait, stop, and spawn independent diagnosis sessions with explicit options.

Happier Session Control manages Happier sessions and execution runs via the happier CLI JSON contract. Use it to list, inspect, send messages, wait, stop, and read history, or to start and control execution runs from an agent framework.

MCP Builder guides creation of high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Skill Creator guides users through creating and updating skills that extend Claude's capabilities with specialized knowledge, workflows, and tool integrations. Use it when building a new skill or refining an existing one.

Template Skill provides a starting point for creating new Claude Code skills. Use it when building a custom skill for an AI agent.

Find Skills discovers, searches, and installs skills from multiple AI agent skill marketplaces using the SkillKit CLI. Use it when the user wants to find, browse, or install new agent skills, plugins, extensions, or add-ons for areas like React, testing, DevOps, security, or APIs.

General Assistant helps agents perform helpful tasks and assist users across various requests. Use it as a general-purpose skill when no specific skill matches the task.

Skill Authoring creates and structures SKILL.md files for AI coding agents, including YAML frontmatter, trigger phrases, directive instructions, decision trees, code examples, and verification checklists. Use when the user asks to write a new skill, create a skill file, author agent capabilities, generate skill documentation, or define a skill template for Claude Code agents.

Task Decomposition breaks down complex projects into small, atomic, independently completable units with dependency graphs and milestone breakdowns. Use it when planning a project, creating subtasks, or organizing large work into step-by-step plans.

Agent Messaging lets CLI AI agents like Claude Code, Codex, Gemini CLI, and GitHub Copilot send messages to each other through a shared local SQLite database with no daemon or network. Use it to coordinate multi-agent workflows, pass code reviews, or share context between peer sessions.