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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

esst-bio-mcp

An MCP server that provides access to the Online Shops in the esst.bio network

freelancertax

Verified Canadian self-employed tax math: SE tax, CPP, GST/HST, instalments, CRA deadlines. Free.

read-only-mysql-mcp-server

MCP server for read-only MySQL database queries in Claude Desktop

automotive-appraisal

TradeBasis: Canadian B2B vehicle appraisal SaaS info — product, Lite/Pro pricing, research briefs.

agentwatch

Multi-agent observability: cascade failure detection, heartbeats, and forensic replay

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base-intel-mcp

Read-only on-chain intel for AI agents on Base: balances, tokens, gas, tx status. No API keys.

da

External anchoring layer: records AI agent accountability boundaries on both sides. Content-blind.

security-intel-mcp

CVE lookups (NVD) and dependency-manifest audits (OSV) for AI agents. No API keys.

healthcare-data

US healthcare data for AI agents: CMS, FDA adverse events, CDC, NPPES NPI. Keyless, real samples.

daxoom

Owner-verified local business data for AI agents: profiles, hours, prices, with provenance.

mcp

Connect AI assistants to your product operating model — OKRs, strategy, and discovery.

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seo-audit

Run SEO + AI-visibility (GEO) audits from Claude, Cursor & other AI clients.

matflow

Read-only MatFlow data: pricing, competitors, features, FAQs for combat-sports gyms.

adoteca

Cães e gatos para adoção no Brasil, de ONGs e protetores. Busque por cidade, porte, idade e saúde.

9192

Remote MCP for 9192 discovery, pricebook, payment rails, GET_PULSE quotes, and receipt checks.

iris

Read-only health context MCP server for Iris users.

mailbox

Physical mail API for AI agents. Send letters, certified mail. Sandbox + live keys via MCP.

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offers

Merchant offers with validated discounts and no bought rankings; accepting mints a voucher code.

discovery

Discover Swedish MSK clinics on fysio.care: search clinics, services, and open appointment times.

mcp

Manage Chili Piper scheduling links, meetings, routing rules, and teams. Admin only. Experimental.

citestamp

Citation-health over a CC0 citation graph: what supports, refutes, or cites a paper. Read-only.

mcp

CircleCI's MCP server: inspect projects, runs, workflows, jobs, logs, tests, and artifacts.

agentmemorymcp-mcp

A paid remote MCP for agent memory MCP, built to return verdicts, receipts, usage logs, and audit-re

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cityparity

Cost-of-living & quality-of-life comparison: take-home pay, equivalent salary, safety-net deltas.

civilquants

Parametric estimating engine: CESMM4/NRM2/SMM7/MMHW Bills of Quantities for civils assemblies.

agentdataboundary-mcp

Permission boundary receipts for ChatGPT agents.

mcp-server

API do Music360 para agentes de IA - artistas, obras, fonogramas, contratos, shows, tarefas e mais

star-wars

Star Wars API (SWAPI) as a remote MCP server: films, people, planets, species, starships, vehicles.

shadow-ai-list

Risk-ranked registry of AI tools: look up an AI tool's risk or check if a domain is shadow AI.

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contexta-mcp

Persistent memory and knowledge graph for AI assistants — keyword + vector + graph search.

filetag

Tag, rename, and enrich PDFs and images. Free tier: 1,500 tags/month, no credit card.

roboparts

688 humanoid robot component entities with 4-dimension compatibility checking. Vendor-neutral.

travel-mcp

Tours, alojamientos y traslados en Chile/LATAM con checkout único y precios de operadores locales.

shardlink

Agent-first task marketplace MCP — discover, claim, and deliver paid workspace tasks.

okahu

Cloud hosted Okahu MCP server that helps you manage genAI trace data

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superforms

Human-input bridge for AI agents with voice-first answer links, MCP tools, and HTTP APIs.

creative-claw

On-brand creative studio for AI agents: images, video, audio, and 3D.

sprites

Generate game sprite sheets and animations from an image, and clean up sprite backgrounds.

geo

Geocoding, truck routing, traffic, weather, and place search via MCP — 11 hosted tools.

link-center

Dynamic, editable QR codes + short links with scan analytics and branded QR rendering.

support

Live chat + AI support inbox: list, triage, and reply to customer conversations; configure widgets.

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mind-of-mylo-quotes

Machine-learning-backed insurance premium estimates from Mylo, comparing 100+ carriers.

junely

Daily-verified Colorado kids' camps & after-school programs: real availability, ages, prices.

public-rentals

Search Elron Club furnished apartments, availability, prices, details, and rental applications.

fetcher

The web capability layer for AI agents: render, extract, DNS, SSL, WHOIS & more via x402.

trip-planner

Create trips, compare variants side by side, and add accommodation, transport and event options.

mcp

AI phone answering tools for service businesses — ROI, missed calls, demos across 18 industries

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mcp

Remote MCP server for AIStoryHub: stories, chapters, story bible, Voiceprints, AI generation.

mindlify

Turn AI conversations into visual knowledge maps. Create, connect, search, and organize thoughts.

data

Read-only PostgreSQL, MySQL, SQL Server access via MCP — 24 dialect-aware hosted tools.