Discover skills, MCP servers, and plugins—with compatibility evidence for the agent you use.
18,250+ active tools · Source-synced directory Fresh tools →
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Protocol-compatible MCP servers are clearly labelled; verified integrations stay distinct.
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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.
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134 paid APIs as MCP tools, billed per call in USDC on Base. No account, no login.
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Explore and download AI agent blueprints as Agent Skills directories for coding agents
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Buy negbit's curated, provenance-verified knowledge bundles with your own x402 wallet. Read-only.
Policy-gated MCP tools for embedded hardware-in-the-loop testing on real devices.
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AI lead discovery, qualification, and outreach prep on your Leadbay account.
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Persistent memory + context layer for AI dev teams. 17 tools via MCP.
Agent intercommunication - messaging, channels, shared state, and real-time events
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Bitcoin-native MCP server for AI agents: BTC/STX wallets, DeFi yield, sBTC peg, NFTs, x402 payments.
Chilean legislation via MCP — full-text search across statutes and provisions
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Route one agent through one MCP server to many, with progressive tool discovery to shrink context.