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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

outlook

Outlook & OneDrive MCP: personal & enterprise tools for mail, calendar, contacts, tasks, files

token-intel

Pay-per-call Solana token risk intelligence: 8 tools via x402. From $0.005 USDC, no API key.

agent402

1,308 paid agent tools + 42 multi-tool skill packs. USDC on Base or free via proof-of-work.

aena-mcp

Flight data for Spain's 50 AENA airports over the public and OAuth2 REST APIs

mesquared-mcp-server

Public-site SEO/AEO readiness scans with evidence scores, issues, and clear measurement scope.

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nordic-data

Company, KYB, VAT, sanctions, LEI and address data for 15 EU countries.

local-skills-mcp

Universal MCP server for local filesystem skills with lazy loading and context-efficient discovery

hiaitutor-mcp

Read-only product knowledge for interactive lessons from PDFs, notes, or a topic

museaiimage-mcp

Muse AI Image turns prompts into photoreal pictures and clips with the Muse Image model and Muse

pvz-fusion-mcp

Explore PVZ Fusion gameplay, selected plant guides, and verified PC or Android build information

tiramisu-ai-mcp

Tiramisu AI is an AI product. See the official site for full feature details.

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a11y

Alt text, headings, contrast, ARIA for AI agents

rn-devtools-hub

Drive a running React Native or Expo app from inside its JS runtime: see, act, prove.

mcp-lint

Lint MCP tool schemas for cross-client compatibility and agent preflight safety.

mcp-ordali-memory

MCP server for Ordali memory: SQLite-backed project memory and governance traces.

7-0-mcp

7-0 is a free, no-signup browser game where players build a World Cup squad, survive seven knockout

dep

License check, outdated deps, security for AI agents

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aiphotoeditor-mcp

Best AI Photo Editor powered by GPT Image 2, Flux, Nano Banana & more.

desktop-mate-mcp

Desktop Mate download, mod sources, characters, and setup in one verified guide with links to

i18n

Locale detect, translations, plurals for AI agents

network

DNS, IP info, SSL, WHOIS, ping for AI agents

task

Todo, priority, estimation, burndown for AI agents

gemmaai-mcp

Experience Google's Gemma AI models for free. Chat with Gemma 4 26B and 31B - powerful, efficient

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mla-citation-generator-mcp

MLA Citation Generator creates accurate MLA-format citations from a DOI, ISBN, URL, or manual

producerai-mcp

Producer AI Music is a free AI music generator. Describe a song or paste lyrics, get a full track

tiermakerlist-mcp

Rank real images by drag or tap, save drafts locally without sign-up, export a PNG or JSON board

agent-mcp-gateway

On-demand tool discovery for all your MCPs and per-subagent MCP controls to preserve context window.

mcp-server

Agent-native global eSIM: buy for 193 countries, per-MB in USDT/USDC. Agents earn 20% referral.

pmd

MCP server for PMD static code analyzer - run code analysis and detect duplicates

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agentdeals

MCP server aggregating developer infrastructure deals, free tiers, and startup programs

27-0-mcp

Play 27-0 free in your browser. Spin all-time NRL clubs and eras, draft 13 rugby league legends

aiimageeditor-mcp

Best Image AI Editor free online. Free AI photo editor for picture & image editing.

deepseekfr-mcp

Independent French workspace for evaluating DeepSeek-V3-class chat and DeepSeek-R1 reasoning.

database

SQL formatting, schema visualization, migration generation

github

GitHub analytics - repos, PRs, issues, releases, contributors

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math

Calculator, units, statistics for AI agents

string

String analyzer, diff, templates for AI agents

docverdict

PDF, photo, email, and file comparison evidence checks with plain-language reports.

ads-ai-creator-mcp

Ads AI Creator generates ad creatives, copy, and visuals using AI so marketers can iterate on

bestaiimageprompt-mcp

The best AI image prompt library online. Latest trending prompts copy & paste for GPT image 2,

earscribe-mcp

EarScribe is a browser-based transcription tool that converts audio to text on-device using OpenAI

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llamaai-mcp

Use Llama AI Chat to test Meta Llama 4 Maverick on code review, long PDFs, and screenshots.

nanobanana-mcp

Nano Banana Pro AI image editor free online. Create, edit, and enhance images by Google Gemini AI

riftrunner-ai-online-mcp

Riftrunner AI is an AI-driven role-playing game experience where each story branch is generated on

voxtraltts-mcp

Explore Voxtral TTS with API notes, setup guidance, use cases, workflow tips, and FAQ answers for

savor-dish

AI-powered recipe platform: 18 MCP tools for meal planning, grocery lists & Instacart.

cache

Cache headers, CDN, LRU simulation for AI agents

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docs

JSDoc, README, changelog generation for AI agents

json

JSON/YAML/CSV validate, diff, transform for AI agents

perf

Benchmark, memory, Big O analysis for AI agents