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Frequently asked questions

What is AgentStack?+

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.

What is an agent skill?+

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.

How do I install or use a listing?+

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.

Are the listings free?+

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.

Browse taxonomy

Growth & Revenue65

Sales & Outreach16 SEO & Marketing49

Business Operations492

Analytics314 Business Ops178

Build & Ship595

Creative Studio80

Design & Presentations80

Workflows268

#ToolPopularity

optionality-mcp

Optionality — AI-judged options trading drill, Tollbooth-monetized MCP server

tollbooth-authority

Tollbooth Authority — Certified Purchase Order Service for DPYC operators

tollbooth-authority-newengland

Tollbooth Authority New England — sub-regional certifier under North America

gaggiuino-mcp

Remote MCP server for your Gaggiuino espresso machine's shots and profiles

strava-mcp

Remote MCP server for your Strava activities, segments, and routes

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albyhub-admin-mcp

Admin an Alby Hub Lightning node from an agent: info, balances, channels; safety-gated writes.

virtual-fs

PostgreSQL-backed virtual filesystem for agents: session isolation, shared stores, POSIX ops, RLS.

saturnzap

Non-custodial Bitcoin Lightning (LDK) wallet for AI agents — pays L402 APIs from CLI or MCP.

dowse

Fast local full-text search for Windows files (tantivy + jieba), exposed to AI agents over MCP.

openroad-mcp

The OpenROAD MCP server - interactive EDA sessions via Model Context Protocol

agentpay-vn

Let AI agents collect VietQR payments — generate a QR and auto-confirm settlement.

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veragent

Check the trust/security score of MCP servers, agents, skills & CLIs before you install them.

au-bizintel-mcp

Australian business intelligence MCP — ABN lookup, business search & AI prospect assessment via ABR.

l402-search-mcp

No-KYC web search for AI agents, paid per query in Lightning sats (L402). Holds no keys.

personalbrain-mcp

FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized

cypher-mcp

Monetized graph answers via named Cypher queries — Tollbooth DPYC operator

schwab-mcp

Multi-tenant FastMCP server for Charles Schwab brokerage data, monetized via DPYC Tollbooth

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base-gasless-deploy-mcp

MCP server for AI agents to deploy ERC-20 tokens on Base with zero gas fees via CDP Paymaster. Gasle

taxsort-mcp

TaxSort — Tollbooth-monetized MCP server for personal tax transaction classification

tollbooth-sample

Educational Weather Stats MCP Service — Tollbooth DPYC monetization sample

excalibur-mcp

FastMCP server for posting formatted content to X (Twitter) — Tollbooth-monetized, DPYC-native

loomle

Structured, verifiable Unreal Engine editing for AI agents.

aiim-mcp

Connect any agent to AIIM, a live network where AI agents chat, collaborate, and form companies.

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base-price-oracle-mcp

MCP server for real-time token prices on Base from on-chain DEX pools.

base-security-scanner-mcp

MCP server to scan smart contracts on Base for honeypots, rug pulls, and vulnerabilities.

mcp-agrus-ai

AI consulting agency for regulated industries. Scope a PoC, query compliance, request a proposal.

loaditout

Search and install 20,000+ security-graded MCP servers and agent skills.

mcp-server

Japan central + municipal subsidies (20,810 grants, 1,627 munis). 8 tools beyond Jグランツ MCP.

localstack-mcp-server

A LocalStack MCP Server providing essential tools for local cloud development & testing

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abgeordnetenwatch

Abgeordnetenwatch MCP — German federal & state parliament data.

agify

Agify MCP — age prediction from first name (agify.io, free, no auth)

jarvis

Local-first SCIP code navigation and Zoekt search over your own indexed repositories

in-memoria

Persistent codebase intelligence that gives AI assistants memory across sessions

mcp-redtrack

MCP server for RedTrack affiliate tracking API

dsers-mcp-product

Automate AliExpress/Alibaba dropshipping to Shopify & Wix via DSers with AI.

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poldex

MCP server exposing PolDex commercial insurance extraction tools to AI agents.

ai-incident-db

AI Incident Database (AIID) MCP

bookrails

Find, compare, and book local service businesses: live availability, prices, reviews, booking.

skill-history

Track download history for 70,000+ agent skills. Search and get daily snapshots.

kernal-mcp

Graph-native memory for AI agents: a knowledge graph built from conversation, via MCP.

alchemy-eth

Alchemy (Ethereum + L2) MCP.

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altos

Altos Research MCP — Real estate market intelligence

qorami

Check an email before an AI agent sends it: send / ask a human / block. Detects prompt injection.

retractguard

Open watchdog for retracted & problematic citations: Retraction Watch, OpenAlex, Crossref.

mismem

Cooperative persistent memory for LLMs: episodes, memories and traits over SQLite (FTS5, Hebbian)

philadelphia-restoration

Philadelphia water and fire damage restoration: assessment, insurance, costs, and knowledge search.

openinvest

Investment runtime for AI agents — LLM investment committee, portfolio ledger, decision accounting

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thryx-portfolio

Read-only MCP server for the THRYX onchain portfolio (14 contracts on Base mainnet).

mtgmon

Read-only U.S. mortgage market, lender, GSE performance, and servicing analytics.

kdata-gate

Korean market data for AI agents: K-beauty/K-food products, Naver trends, stocks, real estate.