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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

magic

Self-hosted low-code platform (Docker); its MCP endpoint runs on your own instance, not via npx.

plasmate

Browser engine for AI agents. HTML in, Semantic Object Model out. 16x fewer tokens.

flomo-mcp

Connect AI to your flomo notes. Search, create, edit notes and manage tags via MCP.

plur

Open, local-first engram memory for AI agents: read, correct, delete; shared over MCP.

forge-mcp

Portable reputation for AI agents. MCP-native identity, vouching, trust scores.

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polydev

Query GPT-5, Claude, Gemini, and Grok simultaneously through one MCP server

cli-microsoft365-mcp-server

MCP server for CLI for Microsoft 365 to manage your tenant using natural language

argus

Drive Argus anti-detect browser profiles: isolated identities with their own fingerprint and proxy.

vibedonate

BitTorrent-style mesh for AI inference across agentic CLIs. Local-first.

vibeshare-live

Share a live agent coding session by URL. Spectate or invite in.

appstore-connect-mcp

Check app review status, read reviews, download sales reports from App Store Connect

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litmus

Grade MCP servers A to F with the open behavioral litmus. npm: full toolset; hosted: lookups only.

sequenzy-mcp

Sequenzy MCP server for AI-powered email marketing automation.

vibelive

Multiplayer for agentic coding terminals: live cursors, presence, chat.

whale-data-mcp

Signed settled outcomes (Polymarket, sports, Kalshi) + whale signals as agent tools, paid via x402.

mcp-bookmark

An MCP server that provides [describe what your server does]

bstorms

Free execution-focused playbooks. Brainstorm with other agents. Tip if helpful.

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gen-mcp-server

GEN is an autonomous social media agent: it spots trends, writes scripts, and creates videos.

knowuswell-mcp

Host the KnowUsWell friendship quiz: 16 behaviour questions, four-letter roles, 16 pair types.

eia-mcp-gridsense

MCP server for US electricity grid data: fuel mix, demand, retail prices, CO2 emissions

tracebug

AI agents read TraceBug bug reports (console, network, replay, repro timeline) from local disk.

llmstxt-doc-search

BM25 search over llms.txt doc indexes (Strands, Kiro, AWS); sources addable at runtime.

pretorin

Access Pretorin compliance systems, controls, evidence, and narratives from your AI tools.

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easeclaw

AI lead-finder for agents: pull scored leads, draft replies in your voice, work the pipeline.

x402watch

Wash-filtered intelligence for x402: categories, services, wash analysis, trends.

viberadio-fm

Turns an agent's output into audio: narration, podcast, or music.

gulltoppr

Resolve any EVM contract ABI (even unverified, via decompilation), read, simulate, prepare txs.

postall

Post to 35+ social media platforms. Schedule & publish from Claude AI.

please-remind

Connects to PleaseRemind.com to allow read and write access to all your reminders.

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jd-intel-mcp

Your AI fetches and reads full job descriptions across seven ATS platforms, no copy-paste.

livespace-crm-mcp

Unofficial local MCP server for Livespace CRM with read tools and guarded writes.

newsmcp

Real-time world news for AI agents. 50+ regions, topic filtering. Free, no API key.

pitstop

F1 MCP server: live timing, telemetry, standings, news, and a queryable 1950-present database.

utility-mcp-server

List and fetch official Pine Labs SDK API documentation via MCP tools.

vin-recall-mcp

Decodes US VINs and looks up open NHTSA safety recall campaigns for a vehicle.

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remarkable

Read, write, and manage your reMarkable tablet — browse, upload, create folders, move, delete, OCR

presidio-hardened-x402-mcp

Pre-payment PII screener for x402 — catches emails, SSNs, names before agents sign.

dev-workflow-mcp-server

MCP server to enforce development workflow discipline

selenium-mcp

Selenium Tools for MCP

context-bridge

Context portability MCP server for compressing, formatting, and resuming AI conversation handoffs.

easypaydirect-mcp

Read-only MCP server for the Easy Pay Direct (EPD) / NMI-family payment gateway Query API.

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pricewatcha

Track prices & price history on any online shop, with alerts and an API

bilig-workpaper

Formula-backed WorkPaper tools for workbook readback, input edits, and JSON persistence.

prism-mcp

MCP server that wraps Prismatic's Prism CLI tool

ai-r

Read local AI agent sessions (Claude Code, Codex, OpenCode, Antigravity, Pi): intents, plans, tools

asohawk

ASO analytics and App Store optimization tools for indie iOS developers and AI agents.

prompeteer-mcp

Generate A+ prompts for ChatGPT, Claude, Midjourney — built for agents & workflows.

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mythxengine

Tabletop RPG engine over MCP: dice, combat, stress, clocks, world generation, four bundled worlds

agent-security-lens

Safe-install and trust-check MCP for agents before installing MCPs, Skills or tools.

mcp-server

Financial intelligence: insider trades, SEC filings, 13F holdings, and market signals.