Plugin Development Toolkit

Plan and build Claude Code package components, settings and distribution documentation.

Source owner: anthropics · anthropics/claude-plugins-official
Declared author / attribution: Anthropic source repository

Build a plugin →

Package installedNot observed

External connectionNot observed

Access authorizedNot observed

Task completedNot observed

A source listing is not a check of your machine, account, permissions or result.

COMPOSITION

What is included

Partial inventory

These are declared contents or individually observed source files. Each row states its evidence scope; these are not separate installation recommendations.

Skills

Plugin authoring skills

Seven README-declared skills; retained prior package observation, not revalidated by marketplace refresh

hook-development
mcp-integration
plugin-structure
plugin-settings
command-development
agent-development
skill-development

Packaged here — do not install a second copy just because it appears here. File presence does not establish host activation.

Commands

Guided package authoring

README-declared command; retained prior package observation, not revalidated by marketplace refresh

create-plugin

Packaged here — do not install a second copy just because it appears here. File presence does not establish host activation.

Agents

Authoring and validation agents

Directory observed; complete member list not reconciled; retained prior package observation, not revalidated by marketplace refresh

Exact member count not established.

Packaged here — do not install a second copy just because it appears here. File presence does not establish host activation.

DISTRIBUTION EVIDENCE

Marketplace entries and source pins

Scoped workflow notes. Default marketplace or source reference. Marketplace curator: Anthropic. Curator identity is not package authorship or runtime certification.

plugin-dev: 3deb821cb71ccfaaf2ffa9935e977df314ce5cd5
Package path: plugins/plugin-dev

Inspect the exact marketplace snapshot

TASK-SCOPED PREREQUISITES

What you need to check

Required, optional and unknown describe the recorded workflow. They are not security or compatibility verdicts.

No complete prerequisite inventory was established from the recorded sources. This does not mean “no dependencies” or “no account needed.”

Make a local prerequisite note

Your notes stay in this page. They cannot establish authorization or task success.

EVIDENCE & CHANGE HISTORY

Version and sources

Recorded workflow-note version: Unknown in the retained workflow notes; see any separate manifest observation below
Source revision: Mutable source observed; not an immutable upstream snapshot
Observation date: 2026-09-07 — not a release date or runtime test date
Declared target: Claude Code. Other interfaces remain unknown unless specifically documented.
Package license information: Source LICENSE file present; no package contents redistributed
Identity: gpa:plugin:84264a183fa3e774297b212de06651e43c5bdee41a9475095d548bbc508b4b62
Exact package root: https://github.com/anthropics/claude-plugins-official / plugins/plugin-dev

This snapshot has one recorded observation for this package. No earlier version or permission change is invented. A future source change requires a new reviewed observation before current relationships are carried forward.

Prepare a correction note

Compare for the same task

Copy and Markdown downloads retain source dates, prerequisites and recorded issues, without your personal notes. Compare recorded facts, not a global score. Different ecosystems remain different installations.