Discover skills, MCP servers, and plugins—with compatibility evidence for the agent you use.
18,250+ active tools · Source-synced directory Fresh tools →
Choose your environment
Protocol-compatible MCP servers are clearly labelled; verified integrations stay distinct.
Explore the directory
Helpful context
AgentStack is a searchable, source-linked directory of 18,250 active agent tools: 1,575 skills, 16,628 MCP servers, and 47 plugins. We index public sources so builders can compare tools in one place.
An agent skill is usually a reusable SKILL.md document: instructions, workflows, and context that teach a coding agent how to handle a focused task. A skill can be installed into supported agent environments or read directly before use.
Open a listing and use its installation command when one is provided. For every listing, AgentStack also links to the original package or repository, so you can confirm the current setup steps and review the source before installing.
Browsing AgentStack is free and needs no account. Each listing is independently maintained, so its license, pricing, and requirements come from its original publisher—always check the source page before adding a tool to an agent.
AgentStack Sponsors
Reach AI-agent builders
MCP as a Judge: a behavioral MCP that strengthens AI coding assistants via explicit LLM evaluations
AgentStack Sponsors
Reach AI-agent builders
Robots-aware website audits, pre-crawl quotes, and structured evidence for people and agents.
AgentStack Sponsors
Reach AI-agent builders
Search and retrieve US federal court cases, dockets, claims, and documents via PACER
AgentStack Sponsors
Reach AI-agent builders
NOAA SWPC space weather: storm scales, Kp index, aurora forecasts, solar wind, activity, alerts.
AgentStack Sponsors
Reach AI-agent builders
Open source contribution manager with PR tracking, issue discovery, and CI diagnosis
AgentStack Sponsors
Reach AI-agent builders
MCP server for Amazon Ads API - manage campaigns, keywords, bids, and performance reports
AgentStack Sponsors
Reach AI-agent builders
AI-native MCU debugging and observability through probes, symbols, RTOS, logs, and build tools.
SEC filings and insider trades in real-time. 10-K, 10-Q, 8-K, Form 4, and company lookup.