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© 2026 AgentStackBuilt for people building better agents.

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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

agent-payment-mcp

Secure MCP router providing access to AgentPMT's pay-per-use AI tools marketplace.

promptspend

LLM pricing where every rate carries its source and the date it was last confirmed.

nyc-restroom-mcp

Find NYC public restrooms and their latest Parks inspection status, from NYC Open Data

threejs-devtools

Inspect and edit Three.js scenes, materials, shaders, lights in real time from any AI agent

ledger

Verifiable, hash-chained event provenance for autonomous systems. Local-first, MIT. 5 MCP tools.

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mcp-v1

Sub-cent factual claim verification against live data sources.

memory

Shared long-term memory for AI agents: save and recall context as a searchable knowledge graph.

virtual-delivery-center

Plan a Virtual Delivery Center for any initiative: pods, roles, AI agents, Delivery Units.

ai-netcafe

Compare LLM cost & latency on one prompt, translate PDF keeping layout, cited research, make PPTX

call-copilot

Search and read locally-recorded meeting transcripts over stdio. Read-only, no network.

uk-vet-medicines

UK veterinary medicines — VMD database, withdrawal periods, cascade rules

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potarix-mcp

Find company websites and verified business emails through the Potarix Enricher API.

ksail

SDK for creating, managing, and operating Kubernetes clusters and workloads with ease.

receipt-extraction

AU GST/ABN receipt extraction — assigns entertainment/ITC tax codes per line, not just OCR.

argo-mcp

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2

mcp-server

Apple Developer Documentation with Semantic Search, RAG, and AI reranking for MCP clients

accountingqb

QuickBooks Online for Claude: reports, bookkeeping cleanup, and US & Canadian tax prep.

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ai-rete-rag-mcp

Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.

ari-mcp-py

Python MCP server: fair-price checks, leaderboards, Ed25519 receipt verification for x402/MPP.

stellary-project-management

Connect AI assistants to Stellary projects, boards, documents, and governed agent workflows.

scrapingdog-mcp

Scrapingdog web-scraping & SERP APIs: web scrape, Google, Amazon, LinkedIn, YouTube, and more.

epanet-mcp-server

MCP server for EPANET water-distribution network simulation and scenario analysis.

mcp-all

A Model Context Protocol server to run other MCP servers

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acp-mcp-server

See, price, and control every tool call your AI agents make: policy checks, cost, and audit tools.

mason

Context engineering MCP server — generates CLAUDE.md files via structured codebase analysis

agentpmt

AI agent marketplace for automated employees, workflows, skills, and tool orchestration.

qontoctl

CLI and MCP server for the Qonto banking API

trading-mcp

72 x402 endpoints: trading, AI inference, blockchain, escrow. USDC on Base+Solana.

mcp

Query Solana DEX data: prices, metadata, launches, graduations, live stream tails.

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mcp

Access your app analytics, ASO tools, and app market intelligence with Appfigures.

sipcode

Context hygiene for Claude Code: drift detection, re-read dedup, and token analytics.

memorydetective

iOS leak/perf debugging via MCP: memgraph cycles, .trace analysis, SourceKit-LSP bridging.

arcadedb

Multi-Model database with built-in MCP server for SQL, Cypher, Gremlin, and GraphQL.

perseus-vault

Persistent, encrypted, deterministic memory for AI agents. Local-first, 122 canonical tools.

prd-to-flutter-apk

Generate a Flutter app from a JSON spec free; pay only for the compiled APK (USDC on Base).

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mcp-server

Monitor uptime, manage incidents, configure alerting, and query dependency status via DevHelm

university-data

Search 3,500+ US universities, check admission chances, financial aid, and build college lists.

vulk-mcp-server

Generate, edit, and deploy immersive 3D/WebGL web projects from any MCP assistant.

mcp

Search and vet SEC-registered financial advisors: profiles, disclosures, firm fees, credentials.

authority-mcp

The first MCP governed by ICA. Every action is gated and sealed with a verifiable receipt.

lockin-mcp

iOS dopamine detox app with social media blocking and screen time tools.

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contextweaver

MCP gateway: bounded tool shortlists + artifact-backed result firewall. Deterministic, no model.

mediawiki-mcp-server

MCP server enabling AI clients to interact with any MediaWiki wiki through standard tools

agent-receipts-mcp

EU AI Act-ready audit trail: signed, tamper-evident receipts proving what your AI agents did.

fake-star-audit

Transparent rule-based GitHub fake-star detector — LOW/MEDIUM/HIGH with per-rule evidence.

artifyde-mcp

A home for your agent's HTML artifacts - publish, pull, share and review them over MCP.

mcp

Discover, browse, and collect from 500+ on-chain generative art projects.

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listonic-mcp

Let your AI manage your real grocery list — unofficial Listonic MCP server

leadenrich-mcp

Waterfall lead enrichment — cascades Apollo, Clearbit, and Hunter for max coverage

ebenova-fieldops

WhatsApp booking, staff coordination, and invoice recovery for services.