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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

profile

Read-only MCP server for Mark Siazon's professional profile: projects, FAQ, proof, availability.

dreams

Dream symbol interpretation and dream-dictionary lookups for AI agents, one API key.

royal-mcp

Security-first WordPress MCP server. 129 tools for Claude, ChatGPT, Gemini. Free on wp.org.

hush

A secret store for AI agents: the agent never sees the plaintext.

rss-atlas

Search a curated RSS feed directory and fetch latest articles. EN/JA. Sign in to use favorites.

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rtcstats

Query analyzed WebRTC sessions: observations, deductions, experience scores, and AI summaries.

connext-mcp

Integrate Connext AI into agentic workflows, enabling Connext product-aware assistance.

rubrkit

MCP-native AI evaluation: rubric audits, eval suites, and proof reports for AI/LLM output.

compliance

Engineered GDPR compliance for engineers and AI agents: pull rules, implement, submit evidence.

mcp

LLM routing and A-share market phase signals via LG framework.

zhiji-signal

Daily A-share market brief with LG phase signals. No auth required.

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cabin

Put websites online from chat - instant free HTTPS, real domains, zero DNS or API-key setup.

mcp

A-share HS300 phase signals via Landau-Ginzburg framework. No auth required.

mirrors

AI agent testing: replay real sessions against a rebuilt staging environment to catch regressions.

mcp-test-utils

Desktop UI automation for AI agents: screenshots, windows, mouse, keyboard, UI Automation, OCR

verify-mcp

Offline Ed25519 verification of signed receipts, bundles, and trust artifacts.

booking

Book hard-to-get restaurant reservations on your own Resy, SevenRooms, or OpenTable account.

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coccocbot

Validate Cốc Cốc Bot IP addresses. Remote MCP validate_ip tool.

koment

Read and write checked code rationale stored outside source comments.

legal-research

日本法リサーチMCP。e-Gov全法令の検索・条文取得、委任先解決、裁判例検索、国会会議録、改正沿革、官公庁一次資料（PDF/HTML）の本文読取・読み起こし全文までこれ1本で

search-fragments

For queries a model can't confidently place: resolves or declines. Built to decline, not guess.

seogrep

SEO for AI agents: crawl sites, audit pages, pull Search Console data, generate shareable reports.

petalbot

Validate whether an IP address belongs to PetalBot. Remote MCP server exposing a validate_ip tool.

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workbench

Hosted DNA/RNA/protein tools: primers, oligos, PCR, cloning, CRISPR, alignment, batch & pipelines.

looptool

An MCP server that automatically collects feedback on your MCP server.

seatwifi

In-flight WiFi: provider by flight, airline or tail, measured speeds, Starlink rollout.

quote-engine

Generate branded contractor quotes: hosted approval page, PDF, QR code, and Stripe payment link.

sema

MCP tools for Sema — eval, compile, build, format, and docs for a Lisp with LLM primitives.

ccbot

Validate CommonCrawl CCBot IP addresses. Remote MCP validate_ip tool.

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googlebot

Validate whether an IP address belongs to Googlebot. Remote MCP server exposing a validate_ip tool.

setfork

Runnable, versioned lists agents can search, read, create and update. Git under the hood.

property-data

Price trends, CAGR, rental yield for Singapore private and HDB property, from URA/HDB records.

openai

Validate GPTBot and OAI-SearchBot IP addresses. Remote MCP validate_ip tool.

clearinghouse

Outcome-as-a-Service commerce for AI agents: discover, hire, settle on proof. Live on devnet.

serpdive-mcp

AI-agent web search, answer-ready content. Beats Tavily: 60.7% of quality duels, 20.2% fewer tokens.

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server4agent

Give any MCP-compatible AI assistant a builder for live, hosted web tools and workflows.

research

Portfolio analytics + US-equity market research for AI clients. ChatGPT deep-research compat.

zama-bike-kaitori

中古バイク・原付・スクーターの買取相場照会と無料出張査定の申込。対応=神奈川・東京・埼玉・千葉・茨城・群馬・山梨。Japan used motorcycle buyback.

mcp

AI-summarized filings from 7 markets with special-situations screens, for research agents

skingrind

CS2 skin prices, case odds and ROI, Armory value, and Trade Up contracts.

signed

Angel investor portfolio, startup deal pipeline, and CRM data from your Signed account.

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skipodds

Win probabilities for 13 sports: NFL, NBA, soccer, tennis, golf, cricket. No API key, no signup.

sitelemetry

Authorized security, SEO, AI visibility, integrations, accessibility and performance audits.

smartling-mcp-server

Smartling MCP Server

socialchamp-mcp

Connect AI agents to Social Champ: manage channels, posts, AI content, queue, and approvals.

shop

Pre-owned sneaker shop catalog: search in-stock shoes by keyword/brand/price, get buy links.

mcp

Operate smplkit from your agent: feature flags, config, logging, audit, and scheduled jobs.

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notary-exam-prep

Fetch real California Notary Public exam practice questions and grade answers in-chat.

clearlist

AI resale manager. Photograph an item, AI writes the listing, publish a sale page, manage pickups.

signvoy

Send documents for e-signature, track signing status, and download signed PDFs. No API key required.