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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

johns-essentials

110+ deterministic file tools: PDF, image, media, convert, analyze. Connect in one click (OAuth).

jumpcloud-genai

An MCP server that provides an API to LLMs to manage their JumpCloud resources.

admin-mcp

Manage your Jumpseller store with AI. Products, orders, customers, and more.

mcp

Free IELTS prep: band-scored student essays and interactive Listening/Reading drills graded in-chat.

mcp-server

On-brand image generation (product shots, app icons, OG cards, sprites) for AI coding agents.

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mcp

izHost public read-only MCP: service pricing and live domain availability lookup.

tabula

Cross-AI personal memory. Save once in ChatGPT, recall in Claude, Mistral, Grok, or any MCP client.

mcp

Manage Jitsu data pipelines: destinations, streams, connections, functions, live events.

sfmc-mcp-server

MCP Server para Salesforce Marketing Cloud: valida queries do Automation Studio antes de rodar.

jobmojito

Run AI interviews, manage candidates and read hiring analytics on JobMojito.

server

Create and manage invoices and customers on Jupiter Invoice (MCP, API-key auth).

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mcp

Lowers your AWS bill by helping you clean up and optimize your setup

kai-agi

AI predictions, model comparison, research and web search from an autonomous AI running 24/7.

kairos-signal

First-party DePIN supply telemetry, 171 networks. Every value carries a verify-yourself URL.

verify

Runs your code against a contract; returns HELD or BROKE at the exact input. Deterministic.

codeweaver

Semantic code search built for AI agents. Hybrid, AST-aware, context for 166 languages.

hiring

Behavioural hiring briefs from any JD: 5 behaviours, evidence, demand, interview questions, rarity.

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kpi-depot

Search 20,000+ corporate KPIs and 30,000+ source-attributed industry benchmarks with definitions

mcp-server

Azure FinOps cost optimization for Claude Code: idle resources, rightsizing, reserved savings.

kaicalls

AI phone secretary: place calls, read transcripts, list calls, agents, and stats.

kanban

Create and drive KanbanThing kanban boards. No account, no API key, board link required.

agent-papers

Registry of companies selling AI agents identity, phone, email, addresses, money, legal, insurance

mcp-kettlelogic

MCP server exposing Kettle Logic insight articles & industry guidance as tools + resources.

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league-loom

Read-only ESPN, Sleeper, and Fantrax fantasy leagues for Claude, ChatGPT, and other AI tools.

deals

Curated, human-reviewed deal feed for AI agents — live deal search + price watches. No auth.

container-loading

Pack cargo into containers & onto pallets; a verifiable 3D loading plan. Free tier + REST API.

lemmebuyit-mcp

Search 86 US retailers — 260M+ products with real-time pricing, stock, and price history.

reference-data

African govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 34 countries; Ghana free.

mcp

Deterministic compliance and vertical knowledge bases for autonomous agents. Free 24hr trial.

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appcontext

Live iOS Simulator and browser screenshots, logs, and a personal MCP hub for AI coding agents.

witness

Distills your sessions or any text corpus into a dated history of how its subject changed.

kalshi

Research Kalshi prediction markets and place trades you approve, on your own API keys.

career

Tailor resumes, generate cover letters, render CVs as PDF, and browse 22+ templates.

mcp

Live threat intel for Claude — CVE, KEV predictions, IP lookup, malware hashes. Free, no API key.

knowa

Team docs served to AI agents over MCP - search, Markdown reads, version pinning, read audit.

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last-minute-tours

Search and book last-minute tours and activities in 28 cities from 21 suppliers.

edge-lab

Query published LifeLongEdge Edge Lab trading-system research studies as structured data.

mcp

AI-powered hiring for recruiters & candidates - video interviews, transcripts, scores, profiles.

brain

Company brain for AI agents — temporal knowledge graph search, exploration, and durable memory.

price-api

Solana DeFi MCP: Meteora DLMM brief+detail; Solana DEX scout. Commerce optional.

agenttool

Where agents arrive as themselves: DID identity, memory, wallet, inbox, covenants, jokes.

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leadsapp

Search 136M+ US/CA B2B contacts free, verify emails free, get compliance verdicts. Pay per reveal.

larabench

Search Laravel jobs, remote roles, Laravel news, and package releases in real time.

catalog

Search the Legends of Learning K-8 games catalog and standards alignment

agentmetal

Rent a Linux VPS from an AI agent: provision, SSH in, run commands. Pay USDC (x402) or card.

reference-data

Asian govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 28 countries; Japan free.

agent-web-reader

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

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pressuredesk

Read-only BUY / WAIT / AVOID spend gate for paid APIs, MCP endpoints, and x402 routes.

reference-data

Oceania govt data, cited: rates, VAT, tax, wages, holidays, FX. 8 countries; Australia free.

extract

URL-to-Markdown API for AI pipelines — clean markdown with metadata and caching.