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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

mcp

Automate 1,000+ services from any MCP-compatible AI agent: build Applets, run actions and queries.

opendirectories-business-data

Search 12M+ verified businesses across 10 countries via government registers.

mcp-server

Exposes tools for querying subscriptions and billing data from the INFO-Subscription platform

clypt

AI-native link intelligence — shorten, track, and manage links from any AI agent

airdrop-checker

Check wallet eligibility for active crypto airdrops — LayerZero, EigenLayer, Scroll. x402.

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gk-cli

The GitKraken MCP Server for managing repos, PRs, issues across GitHub, GitLab, Bitbucket and more.

personhood

Rewrite AI-generated text so it reads as human, in a persona's voice.

reserve

Private chauffeured transport in Los Angeles. Price any trip at a fixed all-in rate, no account.

mcp

Praxis: published trading strategies re-run and audited — verdicts, claimed vs measured stats.

block-genomics-mcp

Prove Bitcoin block ownership via BIP-322 and register sovereign AI agents on the Nexus Protocol.

password-strength

Password strength scoring with entropy, crack time estimation, common password detection. x402.

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code-index

Rust code index MCP server, native 1C:Enterprise (BSL) support. 31 tools, AST for 14 languages.

charactercheck

Read-only CharacterCheck MCP server for deterministic character context with provenance and trust.

mcp

Données immobilières officielles françaises (DVF+, cadastre, DPE, risques, urbanisme) via MCP.

coingecko-mcp

Coingecko - 36 tools for data, metrics, and on-chain analytics

mcp-server

Connect AI agents to Granoflow for tasks, reviews, and spaced-review memory cards.

agent-tools

247 LLMs + image/video/voice/music gen + crypto/DeFi/markets/web-search. Pay-per-call USDC, no key.

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mcp

Provides capabilities that let LLM agents perform a range of infrastructure management tasks.

merchant-check

Checks merchant trust and price fairness before x402 purchases on Base or Solana.

imagedimensions-mcp

Audit a web page's images: natural vs rendered sizes, oversized detection, and formats.

trust-gate

Merchant trust verification for agentic commerce. Verify any merchant before autonomous payment.

proxmox-mcp-plus

Proxmox VE MCP server for VMs, LXCs, snapshots, backups, storage, and cluster operations.

magicweave-fastmcp

Author, validate, simulate, and one-click-build game economies on the Magicweave platform.

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kasahorow

Bilingual dictionary lookup and translation validation for kasahorow Fellows.

eu-sanctions-preflight

Read-only EU counterparty sanctions preflight over MCP: screen names & identifiers, evidence

kdan-pdf-mcp

Upload, edit, compress, protect, redact, and compare PDFs with KDAN PDF in Claude and ChatGPT.

griffnode

Non-custodial crypto payments for AI assistants: balances, payments, and create payment links.

koalcheck

TipRanks for X finfluencers — scores who's actually right vs SPY. Free & anonymous, no key.

well-being-check

Hosted MCP app for guided anxiety, depression, and well-being self-checks.

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knotrik

Query and audit AppSheet apps in natural language via Knotrik's pre-scanned definitions.

kurdish-tts-stt

Kurdish (Sorani & Kurmanji) text-to-speech & speech-to-text — 664 AI voices. API key required.

eigenlayer-mcp

Eigenlayer - 8 tools for staking, delegation, and rewards data

extract

Web extraction, OCR (Japanese-strong), invoice and company data for AI agents. x402, no API key.

amenbo

Japanese-web-native MCP server for low-impact, token-efficient web collection

cyber-intel-mcp

CVE search, vulnerability database, EPSS exploit prediction, KEV, IP reputation & threat feed.

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ox-mcp

MCP server for Open-Xchange: email (IMAP/SMTP), Sieve filters, CalDAV calendar, CardDAV contacts

pdfkit

AI-powered PDF tools: fill forms via natural language

locksmith-finder

Find a vetted, licensed U.S. locksmith and request a quote or booking.

htmlvault

Publish and manage secure HTML links: PII/secret scanning, batch create, patch edits, analytics.

hub-equity-mcp

Standardized, restatement-aware SEC + European (ESEF) XBRL fundamentals, served to your agent.

mcp

File conversion for AI agents: office docs, PDF to Word, video, and LLM-ready markdown via API.

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mcp

Search 276,000+ open source icons and insert them as SVG or React components while you code.

hyperliquid-mcp

Hyperliquid - 2 tools for perpetuals, options, and position data

mcp

Connect your AI to human workers. Get paid to help AI.

social-intel-mcp

Trending topics, cross-platform sentiment, viral content, community pulse & brand mentions.

tripwire

MCP for Roblox Studio and Open Cloud: drive Studio, run headless tests, and review game security.

samotpravil-mcp

MCP server for Samotpravil API — docs, typed tools, Python SDK parity, safety flags.

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holydb-mcp

Read-only MCP server for HolyDB: find Catholic parish Mass times by location and time.

dmcheck

Deterministic conduct verdicts for live tabletop sessions - CI for running a game.

clarity

Condition-aware ingredient and product checks for agents, with evidence tiers and citations.