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© 2026 AgentStackBuilt for people building better agents.

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Helpful context

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

silbercueswift

iOS MCP server: 55 tools, xcresult parsing, UI automation, 15ms screenshots.

node-server-orchestrator

MCP server for orchestrating Node.js development servers (backend, frontend, databases, etc.)

cron-mcp

Cron-as-a-service MCP. Schedule prompts; when the cron fires we POST to your callback URL.

ask-ogino

Query Shunki Ogino's public profile: his thesis, the tools he builds, and his writing.

uis-mcp-server

UNESCO UIS statistics (education, science, culture) with full provenance and fixed releases.

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ckb

Code intelligence MCP server — 80+ tools for navigation, impact analysis, and architecture

kg-mcp

Local knowledge graph memory MCP server for AI assistants.

public-knowledge

Public EPK real estate listings and multilingual guides for Panama and the Dominican Republic.

senado-br-mcp

MCP Server for Brazilian Federal Senate open data (legislators, bills, votes)

beachmap

Europe's 478 best beaches: sea temperature, sand, best months, swimming, surf. Free, CC BY 4.0.

bcb-br-mcp

Brazilian Central Bank / Banco Central do Brasil (BCB) - SGS time series MCP: Selic, IPCA, FX, GDP

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openalex-mcp-server

Access the OpenAlex academic research catalog — 270M+ publications.

agent-immune

AI agent security: prompt injection detection, semantic memory, output scanning, prompt hardening

ruchy-mcp

MCP server for Ruchy: code analysis, scoring, linting, formatting, and transpilation tools

mcp

Agent-facing PDF API: merge, split, rotate, compress, images, metadata, text, and Markdown.

freightutils

Neutral freight reference layer for AI agents: ADR, HS, airlines, UN/LOCODE, ULDs, freight math

banco-de-ideas-mcp

Read, publish and explore creative bisociations between concepts on unbancodeideas.com.

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snipara

Hosted MCP for source-backed project context, memory, code impact, and agent workflow continuity.

freshdeps-mcp

Live npm/PyPI dependency-health verdicts so AI agents stop recommending stale or CVE'd packages

smeltr-token2022

Validate Token-2022 configs (transfer fee, soulbound, delegate). Read-only — no keys or RPC.

xcode-mcpbridge-wrapper

Python wrapper that makes Xcode's MCP bridge compatible with strict MCP clients like Cursor

dyer-md

Access your dyer.md Markdown vault as a knowledge source for AI agents.

freelance-os

Freelance business manager — clients, proposals, invoices, time tracking, scope, and follow-ups.

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openunfurl

Zero-signup anonymous link-unfurl API. One GET returns clean JSON metadata for any public URL.

korean-agriculture-mcp

Korean wholesale agriculture market data - auction prices, seasonal produce, market trends

mcp-server

stories.yaml — an open specification for software requirements, enforced by CI.

mcp

Citable retrieval across papers, books, patents, Wikipedia, and live social sources.

library-mcp

Search and discover 25,000+ MCP servers across all major registries. Connect and pay autonomously.

domain-finder

Check if a brand name is free across domains, GitHub, npm and PyPI, and suggest available names.

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nexus-alpha-geometry

Finance research agent for thesis, trade note, and market-state review.

stelar-signals-mcp

Crypto market-signal MCP tools (regime, sentiment, price, risk) via RapidAPI. Needs RAPIDAPI_KEY

htmlbook

Publish AI-generated HTML & Markdown to a hosted, shareable URL via MCP.

mcp

Brazilian company registry (CNPJ) + sanctions screening for AI agents. Pay per call via x402.

feedsquad

Schedule and publish to LinkedIn, X, and Threads from your AI. Content calendar, approval-first.

clishop

Order anything from your terminal — search, buy, track, and manage via MCP tools.

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specleft

Python intent tracing MCP: map specs to pytest tests, monitor implementation progress, offline-only.

nelly-elephant-mcp

Search and resume past Claude Code conversations. An elephant never forgets.

flashcards

Read and write open-source flashcards through split read/write MCP tools.

edict

AI-agent programming language. JSON AST in, WASM out. Typed, effect-tracked, Z3-verified.

mcp-developers

Gaudio Lab Audio AI — Stem Separation, DME Separation, AI Text Sync

homechecker-guides

Homechecker's professionally authored Australian homebuyer guides: search, cite, build checklists.

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mcp

SEO analysis server with 128 tools for keyword research, competitors, backlinks, and more.

emerging-markets-research

Search expert emerging-markets research on economics, politics, policy and sovereign risk.

img-forge

AI image generation across 5 quality tiers (SDXL to Gemini 3 Pro), 50 free credits on signup.

stackswap

B2B GTM stack intelligence: search ~400 tools, compare vendors, find overlaps, audit SaaS spend.

oura-ring-mcp-server

Oura Ring MCP server for the Oura API v2: sleep, readiness, activity, heart rate, and more.

erbina

Bootstrap, verify, and update CLI tools & MCP servers in Claude Code from recipes; audit scopes.

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aicatalog

Search a Ukrainian catalog of 21,000+ AI tools — search tools, get details, list categories.

yieldsignal

Yield & risk for agents: signal, decision, durability, capacity, sensitivity, exposure, persistence

schemasure

Extract schema-valid JSON from text/HTML or document images. Pay per call via x402 V2.