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by Jesse Vincent

An agentic skills framework & software development methodology that works: planning, TDD, debugging, and collaboration workflows.

by Affaan Mustafa

Harness-native ECC workflows for Codex: shared skills, production-ready MCP configs, and selective-install-aligned conventions for TDD, security scanning, code review, and autonomous development.

by Affaan Mustafa

Harness-native ECC workflows for Codex: shared skills, production-ready MCP configs, and selective-install-aligned conventions for TDD, security scanning, code review, and autonomous development.

by forrestchang

Behavioral guidelines to reduce common LLM coding mistakes, derived from Andrej Karpathy's observations on LLM coding pitfalls

by Ashwin Bhat

Claude Agent SDK Development Plugin

by Anthropic

AGENTS.md as project instructions, by one option. Under claude-md-or-agents-md a project with no instruction files of its own gets its AGENTS.md files instead: a prompt.context hook asks $.fs.ancestors for every AGENTS.md and .claude/AGENTS.md from the filesystem root down to the working directory and hands them to the engine as project instruction files, which it renders, announces and withholds from agents exactly as it does CLAUDE.md, skipping any file the engine already loaded by import or link; a tool.call hook on Read attaches the ones under the project root as the engine attaches a nested CLAUDE.md. Under claude-md-and-agents-md every AGENTS.md is loaded beside CLAUDE.md. Under managed-only the project's and the person's instruction files are dropped and the organization's managed ones kept. Under claude-md the engine's walk stands alone. claude-md-or-agents-md is the default.

by William Hu

Migrate your code and prompts from Sonnet 4.x and Opus 4.1 to Opus 4.5.

by Boris Cherny

Automated code review for pull requests using multiple specialized agents with confidence-based scoring

by Anthropic

Streamline your git workflow with simple commands for committing, pushing, and creating pull requests

by Anthropic

The diff pane as a plugin: /diff opens the session's uncommitted changes beside the transcript, file by file with their hunks, refreshed as Claude edits and runs commands; the first edit opens it where the terminal is wide enough, and a file's ask button rides its hunks on the next prompt.

by Dickson Tsai

Adds educational insights about implementation choices and codebase patterns (mimics the deprecated Explanatory output style)

by Sid Bidasaria

Comprehensive feature development workflow with specialized agents for codebase exploration, architecture design, and quality review

by Prithvi Rajasekaran, Alexander Bricken

Frontend design skill for UI/UX implementation

by Daisy Hollman

Easily create hooks to prevent unwanted behaviors by analyzing conversation patterns

by Boris Cherny

Interactive learning mode that requests meaningful code contributions at decision points (mimics the unshipped Learning output style)

by Daisy

Comprehensive PR review agents specializing in comments, tests, error handling, type design, code quality, and code simplification

by Daisy Hollman

Implementation of the Ralph Wiggum technique - continuous self-referential AI loops for interactive iterative development. Run Claude in a while-true loop with the same prompt until task completion.

by Anthropic

Security default for organizations: seated outermost, it keeps the organization's classic hooks, prompt content, settings and tool policy out of reach of the plugins a person installs, and adds no policy of its own.

by David Dworken

Security review for Claude-generated code. Pattern-based warnings on edits, LLM-powered diff review on Stop, and an agentic commit reviewer that catches injection, XSS, SSRF, hardcoded secrets, and 25+ other vulnerability classes.

by Anthropic

Plugin analytics: adds $.telemetry in the engine.create fold, so a plugin logs an event or marks a feature's use as a first-party row, sent in batches with the session's own credential.

by Dietrich Gebert

Lazy senior dev mode. Forces the simplest, shortest solution that actually works: YAGNI, stdlib first, no unrequested abstractions.

by Alex Newman

Memory compression system for Claude Code - persist context across sessions

by Alex Newman

Memory compression system for Claude Code - persist context across sessions

by CMEM, Inc.

Claude-Mem for Cowork: captures tool use via hooks, streams fragments to cmem.ai (Pro runs the observer), and injects observations back into new sessions and spawned agents.