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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

betbetter-mcp

Free sports model win probabilities and fair odds for nine sports. No API key required.

archsteer

Architecture governance for AI agents: query the live model, get target patterns, check files.

npm-search

npm search MCP — find packages, view details, compare, check downloads.

scraper

Web scraping MCP — extract clean markdown, links, and metadata from any URL.

k8s-port-forward-mcp

Kubernetes Port Forward — MCP Server: port-forward Kubernetes services with terminal integration

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ms-365-admin

Microsoft 365 administration via Graph API application permissions (read-only by default).

hs-verify-gate

Conformance checker for MCP servers. Free, no key, verdicts recomputable and re-measured daily.

ditto

Mine your local AI coding session logs into a profile your agent loads before every task.

clio-mcp

Connect Claude to Clio: 26 tools for matters, contacts, documents, tasks, billing, audit logs.

lawmatics-mcp

Connect Claude to Lawmatics: matters, contacts, pipelines, tasks, forms, custom fields, invoices.

permitverdict-mcp

Crypto price-event settlement verdicts and US building-permit data, paid per call in USDC.

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mediawiki-mcp-server

Search, read, and edit any MediaWiki wiki. Works with Wikipedia, Fandom, and more.

self-inspect-mcp

Send a thought, get one metathought that makes your agent inspect its own assumptions. Keyless.

karbon-mcp-server

Unofficial MCP server for Karbon practice management: contacts, work, time, invoices, payments.

brandkit-mcp

Brand atomic system over MCP: verbal, visual, motion, tokens, and a magic_trick taste primer.

magpipe

Manage AI voice agents, calls, SMS, contacts, and phone numbers via Magpipe.

rentrollapi

Extract verified data from CRE rent rolls and T12 operating statements (PDF, Excel, CSV, scans)

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companies-house-mcp

Search UK companies, retrieve profiles, officers, charges, and generate due diligence reports

umbra

Trust score for AI-generated code: scan repos, guard agent file writes, get a 0-100 score.

core

Agent-native MCP server for driving, inspecting, and asserting on real Electron desktop apps.

s3

AWS S3 MCP — list buckets, browse objects, upload/download, presigned URLs.

n8n-manager-mcp

MCP server for n8n workflow management -- view, create, sync and manage workflows via AI.

tokenguard-mcp

Real-world data for agents: air quality, geocoding, quakes, holidays, web search

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coal

Payment rails for AI agents. Pay merchants in USDC on Base. Dual-protocol: x402 + OKX APP.

simulate-monte-carlo

Real Monte Carlo simulation of a compound event/conditional probability. Paid via x402.

vision-squeezer

Cut vision-LLM token costs by snapping images to tile boundaries — Claude, GPT, Gemini, Llama, Qwen

strategy-skills

11 open strategy frameworks as AI-guided prompts for any MCP client.

leadpipe-mcp

AI lead qualification: ICP filter, 0-100 scoring, Hunter.io enrichment, HubSpot/Pipedrive export.

nutrients-mcp

Analyze food photos or text for calories, macros, vitamins, minerals, and allergens.

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contract-guard-mcp

EVM contract/token risk check + ERC20 approval (proxy, EIP-7702, unlimited-allowance). Zero deps.

tx402

Explain Algorand transactions, groups, batches, and account activity with x402.

ellmos-codecommander-mcp

Developer MCP server: code analysis, JSON repair, imports, diffs, regex, format conversion.

secrets-audit-mcp

Detects leaked secrets & API keys: 32+ provider rules (AWS, GitHub, Stripe, OpenAI…), zero deps.

saightly

Svensk marknadsplats för lokala tjänster från verifierade företag — sök, boka och begär offert.

folosat-mcp

Folosat MCP — income allocation, savings goals, group expenses and wealth tracking. EN & AR.

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endoflife-mcp

EOL dates and risk scores for 480+ software products. Check versions, score risk, audit stacks.

entity-verification

5.5M verified entities, 10 countries, 13 tools. EU VAT, BORME, GLEIF, KYB. Free 100/mo.

gbstudio-claude-mcp

Create and modify GB Studio projects with MCP tools for scenes, actors, assets, and validation.

ipnex

Cited, confidence-stamped patent intelligence over US university tech-transfer out-licensing.

manabuy-mcp

ManaBuy MCP server for product search, order quote, and AI-assisted ordering.

winrdp-mcp

Zero-config server to provision and administer any Windows RDP box over WinRM/SSH/SMB.

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invoiceflow-mcp

AI-powered invoice automation. Create invoices, track payments, and manage cash flow.

skillfm-llm-cost-optimizer-openai-anthropic-usage

LLM cost optimizer for OpenAI, Anthropic, token usage, BYOK, and SkillFM Beacon audits.

ezatwork

Manage clients, projects, time, and invoices in EZ@Work — business management for freelancers.

domscan

Domain intelligence for DNS, WHOIS/RDAP, TLS, reputation, valuation, and brand protection.

sqlite

SQLite MCP — query databases, inspect schemas, explain queries, export data.

farpy

Verified GPU compute for Blender rendering with signed receipts and proof.

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skillfm-claude-code-token-usage-cost

Claude Code token usage, cost visibility, and SkillFM Beacon AI health checks for MCP agents.

pplog

Official MCP server for pplog - a poem sharing service

govee-mcp

LAN-first, cloud-fallback MCP server for Govee smart lights and devices.