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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

akeyless-rta

Secretless database and cloud access via Akeyless RTA. Credentials never enter the model.

agentreader-mcp

11 pay-per-call web tools for AI agents, auto-paid in USDC on Base via x402. No API keys.

mcp

Calendar API for AI agents: events, availability, Google/Microsoft setup, scheduling, and iCal.

yarr

Self-hosted media fleet operations across Sonarr, Radarr, Plex, and related apps over MCP and CLI.

compel

Create and track AI music videos and audio-reactive visuals from songs.

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zulipchat

ZulipChat MCP: Connect AI to Zulip with 60+ tools for messaging, streams, events, and analytics

arduino-mcp-server

Arduino MCP server for CLI setup, board detection, compile/upload, serial monitoring, and pin refs.

creditpolicy

Search Australian lender credit policies, compare lenders and pre-vet deals, with citations.

optibot

AI code review for your AI assistant — review local changes, branch diffs, and patch files.

mockhero

Generate realistic relational test data — 156 field types, 22 locales, JSON/CSV/SQL, free previews.

seo-stack-mcp

The complete open-source SEO data stack for AI agents: 7 sources, 86 tools, one MCP server

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hypermnesia-mcp-viz

Read-only visualization for Cortex memory, knowledge, sessions, traces, and codebase graphs.

boosthis

Read-only performance insights for your Boosthis projects: speed, crashes, traces, and fixes.

mcp

豊胸モニター募集サイトのMCPサーバー。クリニック検索・術式情報・悩み相談・世代別記事を提供します。

cabal-hunter

Solana pre-trade safety for AI agents: cabal, bundle, dump, deployer & honeypot in one verdict.

signals

Millions of dated buying and momentum signals: who raised, who's hiring, what changed and when

mcp

Live crypto data: funding rates, funding arbitrage, OI pressure, Fear & Greed. Free, no API key.

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roseline-mcp

MCP server for C# code analysis and automated fixing using Roslyn analyzers and code fix providers.

codmir

AI-powered task execution, tickets, sprints, error debugging, and desktop control.

failure-intelligence

Biomedical failure intelligence platform for terminated trials and translational analysis.

google-health-fitbit-mcp

Privacy-first Google Health API MCP server for health, sleep, activity and HR agents

agenticbudgetrouter-mcp

Agentic workflow budget approvals with usage receipts.

worlds-knowledge

Source-checked CLI guides and model-aware planning for Claude Code, Codex, and Grok Build.

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clianythingharness-mcp

A paid remote MCP for CLI tool MCP, built to return verdicts, receipts, usage logs, and audit-ready

pydanticcontract-mcp

A paid remote MCP for Pydantic AI structured output, built to return verdicts, receipts, usage logs,

blazingcdn-mcp

Manage BlazingCDN from AI agents: CDN zones, cache, metrics, domains, cloud storage and video CDN

reposcout

Discover, enrich, and rank GitHub repos for an objective with weighted, evidence-based scoring.

search

Live Google + public LinkedIn data: search, maps, profiles, companies, jobs. Pay only for results.

mcp

Manage Cosmic CMS content, media, object types, and AI generation from any MCP client.

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mcp-safeguard

MCP server security scanner: detects prompt injection, credential leaks, SSRF, tool poisoning.

data

Query 390,000+ HOA and condo association records, statutes, rosters, and flood risk data.

proton-bridge-mcp

Read, organise and carefully-gated send for Proton Mail, without your mail leaving this machine.

dbtrail

MySQL change tracking with instant row-level recovery and forensic attribution for compliance.

prism

Ask your app anything — revenue, errors, read-cost, growth — and get rendered charts back.

marketplace

Search and browse global classifieds across 80 markets. No auth required for read-only access.

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vitamin-d

Vitamin D synthesis calculator: sun position, UV, IU/min, time to dose, sunburn risk, daily window.

titen-memory

Evidence-grounded agent memory with mandatory provenance, on local SQLite or Cloudflare D1

deerdawn

AI session memory: the brief your AI reads before every session so no session starts cold.

mcp

Agentic scheduling & booking for field service: availability, jobs, customers, crews, fleet.

aibvf-mcp

AI BVF: score AI portfolios Stop/Fix/Accelerate with decision confidence and pace-layer drag.

the-data-commenter

Data-economy news: markets, alt data, AI training data, licensing, deals. Agents can contribute.

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dca-tools

Dollar-cost-averaging backtests on real historical data for crypto, stocks and commodities.

mcp

DebugBundle MCP: runtime error reporting, incident response, health checks, and product analytics.

default-privacy

Privacy Protocol directory, guides, diagnostics, formation intake. 23 tools, 7 resources, 6 prompts.

cejel

Offline deterministic engineering-trust certificates for repositories, with no telemetry.

blogcaster-mcp

An MCP server for the BlogCaster project.

openstaad-mcp

MCP server for Bentley STAAD.Pro via the OpenSTAAD API

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kalshi-mcp-server

MCP server for Kalshi prediction markets: native RSA-PSS auth, rate limiting, demo/prod safety.

sportscore-mcp

Live scores, standings, top scorers, brackets for football, basketball, cricket, tennis. Free API.

parecode

Token-aware ripgrep code search and atomic multi-file edits for coding agents.