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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

automotive-mcp-server

Cars.com listings, VIN lookups, and dealer inventory for car-buying assistants.

eeg-mcp

Real-time EEG: BrainFlow streaming, wall-clock replay, online DSP, recording, and stimulation.

sqlai-dev-sql-verifier

Executes SQL in a real ephemeral database: rows, typed errors with suggestions, plans, diffs.

lean-reader

Token-minimized URL-to-clean-text reader for LLMs, with a token-savings receipt.

agent-pulse

Reproducible benchmarks and reliability evidence for agent tools.

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mcp-server

Agent commerce settlement tools on Base: treasury setup, payment splits, yield and attribution.

mcp

CloudQuery MCP server for asset inventory data. Supports CLI, PostgreSQL, and Platform modes.

dealflowpro

Multifamily real estate deal analysis — cap rate, DSCR, IRR, DFP Score, max offer price

mcp-synology

MCP server for Synology NAS — browse files, monitor health, and automate operations

asset-management-mcp

Upload, organize, search, and transform images, videos, and files with AI-powered tools.

dataiku-mcp

MCP server for Dataiku DSS project, flow, and operations APIs.

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logicnodes-mcp-bridge

Signed PII-Shield: redact PII to an EIP-191 attestation, plus x402 pay-per-call agent tools.

workflowy-mcp

Search, read, create, and organize Workflowy nodes with breadcrumb context.

dotnet-sherlock-mcp

.NET assembly introspection MCP server with advanced reflection and type analysis capabilities

mcp-einvoicing-de

German e-invoicing MCP server: ZUGFeRD 2.x, XRechnung 3.x, EN 16931, KoSIT validation, Peppol.

vocce-agent

Agent media tools: transcribe, summarize, notes, flashcards, doc Q&A, PDF compress. No API key.

ai-data-marketplace

Live chain reads from $0.001, web fetch, market and security data. No API key, free previews.

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glippy-mcp

GEO (Generative Engine Optimization) analysis: check any domain's AI-readiness for LLM search

moltalyzer-mcp

Polymarket prediction-market intelligence + AI, GitHub & narrative feeds for agents, via x402.

mcp-facturacion-electronica-es

Spanish e-invoicing MCP server: VERI*FACTU, Facturae/FACe, SII, Crea y Crece B2B.

abs-mcp

Inspect and safely operate Audiobookshelf libraries over MCP.

mcp-nfe-br

MCP server for Brazilian e-invoicing: NF-e and NFC-e (modelo 55/65), schema 4.00, SEFAZ.

propraven

Property intelligence: 180M+ US parcels — lookup, search, owners, hazards, permits, deeds.

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mcp-alertmanager

A Model Context Protocol (MCP) server for Prometheus Alertmanager

mikrotik-mcp

MCP server for MikroTik routers: firewall, NAT, routing, DHCP, DNS, WireGuard and more via SSH.

eu-audit-mcp

Tamper-evident audit trail MCP server for EU AI Act & GDPR compliance.

danbooks-mcp

AI bookkeeping for small business. Create invoices, log expenses, and check P&L by voice or text.

filingapi

SEC filings, earnings transcripts, guidance signals & macro calendar for S&P 500. 11 MCP tools.

revolut-mcp

MCP server for the Revolut Business API: accounts, transactions, payments, FX, and more.

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heartwood-memory

Heartwood Memory — governed AI agent memory; signed provenance. BUSL-1.1; not OSI open source.

booboo

Query your AI system's wiring, knowledge, memory, agents and crons as one rooted graph over MCP.

coalesce-transform

MCP server for managing Coalesce Transform workspaces, nodes, pipelines, and runs.

booboo

Query your AI system's wiring, knowledge, memory, agents and crons as one rooted graph over MCP.

iphone-mirroir-mcp

Control a real iPhone through macOS iPhone Mirroring: screenshot, tap, swipe, type.

legal-text-mcp-de

German federal & state legal texts (BGB, DSGVO, …) with canonical IDs and cite-grade provenance.

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vibelens-mcp

VibeLens MCP tool for AI to visualize code changes with inline annotations in VS Code/Cursor

jp-crypto-tax-rules

Machine-readable Japanese crypto-asset tax rules for AI agents: rules-as-code with citations, x402.

tctc-mcp

ERC-7303 token-controlled roles for AI agents: grant, check, and revoke permissions on-chain

gia-mcp-server

Runtime AI governance: decision gates, human approval, hash-chained audit, compliance mapping.

jp-biz-opportunity

Japanese public-sector business opportunities for AI agents: tenders, subsidies, sanctions. x402.

mcp-xero

MCP server for Xero — global cloud accounting: contacts, invoices, payments, items, reports

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esa-mcp-server

A Model Context Protocol (MCP) server for esa.io

ship-mcp

Clean TypeScript starter for MCP servers: zod-validated tools, tests, one-command dev loop.

fdic-mcp-server

Search FDIC institutions, branches, failures, and peer analysis over MCP.

cogdepot

Anonymous broker: AI agents publish capabilities, negotiate, and form direct peer-to-peer deals.

dataverse

73 tools for Microsoft Dataverse: CRUD, FetchXML, metadata, audit, batch, role privileges and more.

intelligence-aeternum-mcp

AI training dataset marketplace: 2M+ museum artworks with Golden Codex enrichment

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simengine

Monte Carlo decision-intelligence over MCP: simulate, optimize, and decide under uncertainty.

winbridgeagent

Open-source Windows MCP server for AI assistants. File, clipboard, screenshot, process & power mgmt.

schelling-protocol

Universal coordination protocol for AI agents. Discovery, matching, and negotiation.