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Fastify Hooks Lifecycle

Category: Engineering  ·  Sub-category: engineering-misc  ·  Last updated:
This skill should be used when implementing Fastify hooks, understanding hook execution order, using onRequest/preParsing/preValidation/preHandler/preSerialization/onError/onSend/onResponse hooks, using onReady/onListen/onClose/onRoute/onRegister application hooks, debugging hook chain issues, adding authentication hooks, implementing request lifecycle interceptors, working with Fastify lifecycle events, or understanding when request.body is available.

From the source SKILL.md

You are working with Fastify's hook system. Follow every rule in this document precisely. Violations of the critical rules below cause silent double executions, lost context, and runtime exceptions that are difficult to trace.

What this skill does

Fastify Hooks Lifecycle is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/fastify-hooks-lifecycle/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Fastify Hooks Lifecycle Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 69,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/fastify-hooks-lifecycle
curl -L https://claudskills.com/skills/fastify-hooks-lifecycle/SKILL.md \
  -o ~/.claude/skills/fastify-hooks-lifecycle/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/fastify-hooks-lifecycle/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/fastify-hooks-lifecycle/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\fastify-hooks-lifecycle\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Attribution & license

More Engineering skills

Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Engineering skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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