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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

sprintflint

Opinionated sprint tracker. Read/update tickets, sprints, velocity from Claude/Cursor/Zed.

gds-agent

Neo4j Graph Data Science MCP server

neo4j-mcp-canary

Neo4j MCP Canary — The canary goes first so the rest of us know what's coming

qrverloz-mcp

QR codes active 90 days, claimable forever. Request an API key in chat to retarget and track scans.

postgres-mcp-server

Enterprise PostgreSQL MCP server with 63 tools, 10 resources, 10 prompts for AI-native operations

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neus-mcp

Portable identity, authority, trust receipts, and Vault secrets before sensitive AI actions.

sql-mcp-server

Controlled SQL access gateway with policy, cost limits, tenant isolation, and safe tools.

mcp

Search websites by source code, technology stack, analyze domains, and download lead lists.

mind-map

Experimental code intelligence platform for Claude Code with AST parsing and context analysis

oroute

Auto-route AI requests to 13 models (Claude, GPT, Gemini, Qwen, DeepSeek). 57% cost savings.

stremio-mcp

Search, play, and control Stremio on Android TV over native ADB.

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okffs

MCP server connecting Claude Code to GitHub for an issue to branch to PR to close workflow.

context

Local-first documentation for AI agents. Offline, instant, private doc retrieval.

banking-regulations

Banking Regulations MCP — US banking & consumer-finance rules (12 CFR).

memory-journal-mcp

Developer journal with knowledge graphs, relationships, Git context, and semantic search

mysql-mcp

Enterprise-grade MySQL MCP Server with OAuth 2.0, 106 tools, and Docker deployment

sqlite-mcp-server

SQLite MCP server with 73 tools for JSONB, full-text search, geospatial, and analytics.

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code-health-suite

16 engines, 28 MCP tools for Python code quality. Zero external dependencies.

figma-edit-mcp

Programmatically read, create, and modify Figma designs via MCP.

shelter

AI financial coaching powered by real bank data — cash flow, alerts, and savings

bcb-br

Banco Central do Brasil (Brazil's central bank) MCP.

rubber-duck

Bridge to multiple LLMs and CLI agents: councils, debates, voting, and more

netallion-mcp-lite

Local secret & credential checks for AI-assisted dev — runs on your machine, results redacted.

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mcp-server

Real-time infrastructure monitoring with metrics, logs, alerts, and ML-based anomaly detection.

bt-reseller

MCP server for the Netify Reseller Programme: eligibility, commission, application URL builder.

toolcairn-mcp

MCP server for tool discovery: find, compare, and verify tools across 35+ registries.

bioregistry

Bioregistry — meta-registry of biomedical identifier prefixes

heor-agent

HEOR MCP server: literature search, CEA, BIA, NMA/MAIC, HTA dossiers (NICE/FDA/EMA/JCA).

mcp-nevent

Talk to your live-events CRM (campaigns, analytics, paid ads, segments) in Claude and ChatGPT.

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db-mcp

SQLite MCP server with OAuth 2.1, HTTP/SSE, 122 tools, and smart tool filtering

bitfinex

Bitfinex v2 public MCP.

postgres-mcp

PostgreSQL MCP server with 203 tools, connection pooling, HTTP/SSE, OAuth 2.1, and tool filtering

bls

BLS MCP — Bureau of Labor Statistics public data API (v2)

volthq

Compute price oracle for AI agents — compare pricing across 8 providers in real time.

mcp-server

Monitor, troubleshoot, and optimize your technology stack with Intelligent Observability.

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nex

Organizational context & memory for AI agents. Connect 100+ tools into one knowledge graph.

chrono-mcp

Deterministic time tools for AI agents: timezone conversion, business-day math, cron interpretation.

digest-mcp

Exact hashing, base64/hex/URL encoding, JWT decoding and UUIDs for AI agents. No auth required.

nexus-mcp

Japanese LLM security — prompt injection detection (jpi-guard) + PII masking (PII Guard). Free.

npm-package-ws-has-241560546-weekly-downloads-but-sdk

Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

transfer-entropy-api-sdk

Detect causal dependencies in time series

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healthchecksio-mcp

MCP server for Healthchecks.io API

mcp-eu-finance

ECB rates, EUR exchange rates, Eurostat inflation, GDP and unemployment for EU/Eurozone. Free.

nexus-ai

Deploy full-stack apps (Postgres, Redis, S3, workers, backups) from Claude or curl. 59 MCP tools.

transition-mcp

AI-powered multisport coaching — workouts, training plans, and performance analytics.

genie-locker

Discover and quote quality-gated private AI inference without creating or buying a locker.

biocosm

Biotech intelligence for AI agents: drugs, targets, diagnostics, PoS estimates, and writeups.

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wg-easy-mcp

Administer wg-easy (WireGuard Easy) v15: manage VPN clients, configs, QR codes and server status

fpl-mcp-server

An MCP server that provides Fantasy Premier League analysis and strategy tools.

neural-memory

Persistent memory for AI agents — 55 MCP tools, spreading activation recall.