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© 2026 AgentStackBuilt for people building better agents.

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Helpful context

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

mcp

Verify Canadian deals, find the same product cheaper across .ca retailers, track CAD price history.

workflow

Build and manage Cloudgate workflow-APIs: controllers, actions, workflow graphs, and databases.

clawlink

MCP server connecting AI agents to 100+ apps (Gmail, Slack, Notion, GitHub) via one-click OAuth.

docs

An MCP server for docs.continue.dev

commons

A public message board for AI agents. Read the feed, post, reply. No auth; identity self-declared.

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server

Eyes and hands for AI agents on Android and iOS devices.

dns-doctor

Scan and fix email auth (SPF, DMARC, DKIM, MX, blacklists, expiry) + DNS checks. Validated fixes.

ecoa

Verificação de segurança e conformidade de sites: cabeçalhos, TLS, DNS, e-mail, LGPD e pentest.

deadends-dev

Structured failure knowledge for AI agents — dead ends, workarounds, error chains

mcp-server

Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified.

ironclaw

Sandboxed shell exec for MCP clients: run untrusted agent commands in a gVisor container.

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mcp

User-authorized access to a LuckMeAI life book, journal, memories, relationships, and charts.

biorxiv-mcp-server

Search and retrieve bioRxiv and medRxiv preprints — by DOI, date interval, or keyword — via MCP.

mcp

AI-powered test automation: run tests, analyze failures, query results across mabl workspaces.

clipkit

MCP server for Clipkit — gives AI agents a video toolbox via the Clipkit schema.

scrub-mcp

Stateless PII redaction over MCP/REST. Free ≤1000 words or $0.01/call; file upload supported.

longwatch

Watch web pages, RSS, crypto prices and SEC filings; poll one endpoint for alerts. USDC per call.

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costheta

Verifiable physical randomness from cosmic-ray detections. Free beacon, paid signed decisions.

draugr

Security scanning for AI agents: SAST, SCA, secrets, IaC, DAST, ranked by real risk.

e18e

The official e18e MCP server keeping your agent in check from installing bloated dependencies.

domainee

Custom domains API for SaaS: connect, verify, and manage customer domains, SSL, and DNS

management

Manage EchoRelay API integrations from any MCP client: lines, endpoints, keys, billing, logs, DLQ.

registry

Free dual MCP+agent registry. Probe Live, free demo, Kernel/Loop. Self-list + dual strategy.

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skill-market

x402 skill catalog on lvlltd.com — search, quote, pay with Base USDC, unlock sealed packs.

cognitive-gateway

Edge-compute biological sovereignty node for telemetry and cognitive circuit-breaking.

devstack-mcp

Dev-registry data: npm/PyPI/Docker/VS Code packages, dep graphs, vulns, 50+ ecosystems.

realtystack-mcp

U.S. real-estate data: property records, AVM value + rent estimates, sale/rental listings.

fashion

Provides YouCam API for virtual try-on of clothing, jewelry, and watches.

mcp-job-board-keyword-signal-scanner

Scans Greenhouse, Lever, Ashby, Workday, Rippling for roles in any category. Clay-ready.

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cloro

Scrape AI answer engines and Google Search/News with country and state-level geo-targeting.

sanctions

Sanctions screening for KYC/AML — EU FSF + OFAC SDN checks for Czech companies & individuals.

realestate-pro

Czech distress real estate — paid tier (full search, owner data, RUIAN).

depfeed

Change intelligence for coding agents: sourced breaking changes for npm, PyPI, and Rust packages.

eu261

EU261 flight delay compensation: check eligibility, compute EV, track fares. 6 tools, 35+ airports.

emailmd

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

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makerreels

Turn an app into TikTok-style video ads: agents pull rendered ad batches, captions, posting kits.

codeitall

Behavioral oracle for Rust crate APIs: runtime behavior, yank/advisory, deprecation, sig search

mcp-company-firmographic-enricher

Enrich a company domain into firmographics via Apify: employees, industry, HQ, revenue, logo, age.

mcp-funding-press-signal-scanner

Scan news for funding rounds, exec moves, product launches, and acquisitions at any company.

notesbridge

Search, read, and write your Apple Notes from ChatGPT/Claude via a local Mac agent + MCP relay.

coinslot

13 micro-tools for agents: read pages, verify email, convert, validate, diff, extract. AI-operated.

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german-tax-data

German municipal tax data (Hundesteuer, Zweitwohnungsteuer, Pfaendung), cited to the source

brand-watch

Track your brand's share of voice in ChatGPT, Claude, Perplexity and Gemini. Pay per check.

registry

What a domain publishes for AI agents: ai-catalog.json, llms.txt, agents.md, robots.txt rules. Free.

reminders-bridge

MCP connector for Apple Reminders — search, create, complete, and edit via your own Mac.

gainium-mcp

MCP server for Gainium — manage trading bots, deals, and balances via AI assistants

bookings

Book appointments with Dr. Maggie Geller OD (Vancouver optometrist; myopia, dry eye, contacts).

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mcp-legal-entity-resolver

Resolve a company domain to its registered legal entity, company number, LEI and VAT number.

mcp-workplace-program-detector

Detect the employee programs a company publishes: ERGs, DEI, benefits, leave, volunteering.

mailtempo

MCP server for MailTempo's public free temporary email inboxes.