Building agents

40,024 mods in this category, of every kind an agent can take. Each one carries what it costs per session, what the scan found, and whether it is the original.

gh-skill

25

cli/cli

Skill Claude CodeCodex

Manage agent skills with gh skill. Use this skill to discover, preview, install, update, and publish Agent Skills so an agent can self-manage the skills available in its environment.

not rated 47k +44 today A Snyk: warnSkillSpector: pass 41 tokens original MIT

herdr

26

herdrdev/herdr

Skill Claude CodeCodex

Control Herdr, a terminal multiplexer for coding agents. Use only when the user explicitly mentions Herdr or asks to use Herdr to inspect or control panes, tabs, workspaces, commands, or another agent. Do not use merely because a task could benefit from a background terminal, delegation, or parallel work. Requires…

not rated 46k +1.1k changed 11d ago A Socket: passSnyk: passSkillSpector: pass 74 tokens original Apache-2.0

mcp-server

27

HeyPuter/puter

MCP server Claude CodeCodexCursor +2

Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more. Remote server at mcp.puter.com.

not rated 44k +69 today A tokens not measured AGPL-3.0

buzz-cli

29

block/buzz

Skill Claude CodeCodex ✓ vendor

Buzz CLI for relay operations: owner-reviewed agent drafts, messaging, channels, DMs, users, workflows, feed, reactions, canvas, social, repos, uploads, and agent memory.

not rated 36k +310 changed 3d ago A 41 tokens original Apache-2.0

book-to-skill

30

virgiliojr94/book-to-skill

Skill Claude CodeCodex

Converts books and documents (PDF, EPUB, DOCX, HTML, Markdown, plain text, RTF, MOBI/AZW with Calibre) into structured agent skills, extracting frameworks, mental models, principles, techniques, and anti-patterns. Use when the user wants to study a document through GitHub Copilot CLI, Amp, Claude Code, Hermes Agent…

not rated 36k +751 changed 25d ago C 105 tokens original MIT

huashu-nuwa

31

alchaincyf/nuwa-skill

Skill Claude CodeCodex

A tool for turning a person, topic, or vague need into a reusable thinking guide for an AI assistant. It researches how the subject thinks, decides, communicates, and what its limits are.

not rated 36k +902 changed 11d ago A ✓ AI review 187 tokens original MIT

ifixai

33

ifixai-ai/iFixAi

Plugin Claude Code

Bundles 1 skill, 1 hook · 108 tokens together

Independent auditing for AI agents, open source. Claude investigates your agent, authors an iFixAi fixture from its setup, and audits it against the one question other tools skip: is it doing the job it's supposed to do, given your business rules and org structure? Adversarial depth, assurance discipline. Test any…

not rated 34k +4.5k changed 2d ago A tokens not measured original Apache-2.0

alibaba/nacos

Skill Codex ✓ vendor

Discover, install, update, merge, and publish AI skills with Nacos for personal or team skill registries.

not rated 33k +17 yesterday D SkillSpector: warn 30 tokens original Apache-2.0

topoteretes/cognee

Skill Claude CodeCodex

Use to identify missing instructions in another skill based on its output.

not rated 33k +231 yesterday A SkillSpector: pass 13 tokens original Apache-2.0

picoclaw-agent

36

sipeed/picoclaw

Skill Claude CodeCodex

Configure, extend, debug, or contribute to PicoClaw itself. Use when the task is about PicoClaw CLI commands, config.json, gateway, auth, models, skills, MCP servers, cron, routing, sessions, self-evolution, built-in slash commands, or repository internals. Use PicoClaw-native workflows, terminology, paths, and…

not rated 30k +18 9d ago A Snyk: passSkillSpector: warn 79 tokens original MIT

cursor-cloud

37

pingdotgg/t3code

Cursor rule Cursor

Cursor Cloud environment setup and run notes for T3 Code (Cursor-specific; not for other editors/CI).

not rated 30k +1.5k changed 18d ago A 1,325 tokens original MIT

crush-config

38

charmbracelet/crush

Skill Claude CodeCodex

Use when the user needs help configuring Crush — writing crushrc (the Bash config format) or crush.json, setting up providers, models, LSPs, MCP servers, hooks, skills, permissions, or changing Crush behavior.

not rated 29k +108 changed 8d ago A SkillSpector: warn 50 tokens

fastmcp-client-cli

39

PrefectHQ/fastmcp

Skill Claude CodeCodex

Query and invoke tools on MCP servers using fastmcp list and fastmcp call. Use when you need to discover what tools a server offers, call tools, or integrate MCP servers into workflows.

not rated 28k +68 today A Snyk: warnSkillSpector: warn 46 tokens original Apache-2.0

skills-search

40

agentskills/agentskills

MCP server Claude CodeCodexCursor +2

Search and discover Agent Skills from the skills.sh registry. Powered by HAPI MCP server. Remote server at skills-sh.run.mcp.com.ai.

not rated 27k +310 2mo ago A tokens not measured original Apache-2.0

n8n-agents

42

czlonkowski/n8n-mcp

Skill Claude CodeCodex

Design n8n AI agents the right way. Use when building or editing any @n8n/n8n-nodes-langchain. AI node — an AI Agent, LLM chain, Text Classifier, or Information Extractor — and whenever the user mentions AI agents, LLM with tools, tool calling, $fromAI, system prompts, agent memory, sessionId, structured/JSON output…

not rated 23k +27 today A Snyk: passSkillSpector: pass 156 tokens original MIT

ralph

43

snarktank/ralph

Plugin Claude Code

Bundles 2 skills · 124 tokens together

Skills for the Ralph autonomous agent system - Generate PRDs and convert them to prd.json format for autonomous execution.

not rated 22k +61 8mo ago A tokens not measured original MIT

paseo-plugin

44

getpaseo/paseo

Skill Claude CodeCodex

Build and manage trusted local Paseo plugins. Use when the user asks to create, edit, install, reload, enable, disable, remove, or troubleshoot a Paseo plugin; add lifecycle hooks; transform agent configuration, environment, MCP servers, or workspace creation; automate permissions or turn follow-ups; add a screen…

not rated 22k +598 changed 3d ago A Socket: passSnyk: warnSkillSpector: warn 124 tokens

skill-inspector

45

NVIDIA/SkillSpector

Skill Claude CodeCodex ✓ vendor

Review AI agent skills before installation using NVIDIA SkillSpector and source-aware semantic review. Use when asked whether a skill or downloaded skill folder is safe, trustworthy, installable, over-permissioned, or malicious.

not rated 21k +892 changed 8d ago A Socket: passSnyk: warnSkillSpector: pass 47 tokens original Apache-2.0

harness-creator

46

walkinglabs/learn-harness-engineering

Skill Codex

Build, audit, and improve harnesses that make AI coding agents reliable: AGENTS.md/CLAUDE.md instruction files, feature/state tracking, verification gates, scope boundaries, session handoff, memory persistence, context budgets, tool-permission safety, and multi-agent coordination. Use this whenever a coding agent is…

not rated 21k +590 2d ago A Socket: passSnyk: passSkillSpector: pass 142 tokens original MIT

a0-create-agent

47

agent0ai/agent-zero

Skill Claude CodeCodex

Create Agent Zero profiles with agent.yaml, prompt overrides, tools and extensions.

not rated 20k +54 changed 1mo ago A SkillSpector: warn 20 tokens

openshell-sandbox

48

anthropics/claude-quickstarts

Skill Claude CodeCodex ✓ vendor

Set up NVIDIA OpenShell as the self-hosted sandbox for Claude Managed Agents, step by step. Covers the host check, installing OpenShell, creating the agent and environment, running a first session, confirming the policy held, and changing policy.yaml for your own agent. Use when someone asks to set up, run, adapt, or…

not rated 19k +346 changed yesterday A 87 tokens original MIT

At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: