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© 2026 AgentStackBuilt for people building better agents.

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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

sieve-mcp

AI startup due diligence — screen companies across 7 dimensions, get a Sieve Score.

genai-capture

Capture & annotate your screen from an AI agent: arrows, boxes, text, highlight, blur/redact.

lightnow-proxy

Connect your AI clients to your MCP servers—securely managed in one place.

reddit-insights-mcp

AI-powered Reddit search. Search millions of posts, explore subreddits, discover trends.

aishield

Scans MCP servers for tool poisoning, prompt injection and supply chain risks.

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atex-ai-gateway

One API key for 6 AI models. Pay-per-use. MCP protocol support with web search.

mcp-server

42 local SEO tools for AI assistants. SERP tracking, reviews, keywords, audits, and more.

license-verify-mcp

Verify US contractor license + surety bond + insurance from official state data. WA live, CA beta.

gha-doctor

Diagnose GitHub Actions CI: lint, flaky tests, wasted minutes, health score. Read-only MCP tools.

nostr-ops-mcp

Nostr publishing, queries, and DMs for AI agents, with allowlists, rate limits, and an audit log.

localgym-mcp-server

Read-only MCP server for UK gym search using the LocalGym Agent API.

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paywall-mcp

Lightning-paywall sidecar: wraps any stdio MCP server, requires paid invoices before tool calls.

lobu

Shared, permission-aware company context for AI agents, with provenance, approvals and audit.

mainstreet

Reputation oracle for AI agents on Base: SAFE/CAUTION/BLOCK + 0-100 score before you pay. x402+MCP

aproxproxy

Residential proxy for AI agents via x402 — fetch, sessions, exit country

niro

AI pentester for PRs — finds exploitable bugs and hands your developer agent the fix.

what2watch-mcp

Real-time TV schedules, streaming availability, and personalized recommendations.

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firstdollar

An MCP that teaches AI agents to use the wallets they already have. Teacher, not butler.

author-mcp-server

Recall, check, search, timeline, and graph tools for fiction writers via Seizn Memory v3.

bolor-brain-mcp

Cognitive architecture MCP server with memory, learning, and contextual understanding

outlook-assistant

Microsoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.

mcp

Generate images, GIFs, and PDFs from HTML, URLs, or templates — from your AI agent.

msds-chain

Chemical safety intelligence — 23 tools: compatibility, hazards, PPE, compliance, SDS lookup

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fiber

Optical ops MCP for AI DCs — gNMI, ML RUL, Digital Twin, NCCL, SPARQL semantic

weather-gc-ca

Environment and Climate Change Canada (ECCC) GeoMet MCP.

whiskyhunter

WhiskyHunter MCP.

wikiquote

Wikiquote MCP — sourced quotations

livetennisapi-mcp

Live tennis scores, players, rankings, odds and win-probability. ATP, WTA, Challenger, ITF, juniors.

seven-dpt-mcp

Feynman's twelve-problems method as an MCP server: dormant problems + an evoke loop for new tricks.

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waqi

WAQI MCP — World Air Quality Index (free key)

worldbank-projects

World Bank Projects & Operations MCP.

yc-rejection

yc-rejection MCP — wraps StupidAPIs (requires X-API-Key)

one-person-company-os

Build and update a visual operating cockpit for AI-native solo founders.

skia-studio

MCP bridge to a live Skia Studio tab: AGSL/SkSL shader authoring, graph editing, screenshots.

marketplace-mcp

Publish Nostr marketplace listings (NIP-15 + Shopstr kinds 30019/30402) so agents can run a store.

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chinese-history-mcp

Traceable Chinese-history MCP: 4 cited tools over 9 classical texts (pre-Qin to Wei-Jin).

dpyc-oracle

DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding

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

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strava-mcp

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

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

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agentpay-vn

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

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.