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© 2026 AgentStackBuilt for people building better agents.

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18,250+ active tools · Source-synced directory Fresh tools →

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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

einvoice-readiness

Read-only e-invoice readiness over MCP: VAT format, VIES, Peppol lookup, invoice & readiness

eu-import-preflight

Read-only EU import preflight over MCP: EORI, TARIC candidates, measures, low-value cost

care-circle

Authenticated MCP for a user's care circle: read CareEvents, list loved ones, inspect workspace.

axis-avatar-foundry

3D avatar/asset foundry: text/image -> rigged, validated, engine-ready GLB via x402.

mcp-server

Azure FinOps cost optimization for Claude Code: idle resources, rightsizing, reserved savings.

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kaicalls

AI phone secretary: place calls, read transcripts, list calls, agents, and stats.

kanban

Create and drive KanbanThing kanban boards. No account, no API key, board link required.

agent-papers

Registry of companies selling AI agents identity, phone, email, addresses, money, legal, insurance

mcp-kettlelogic

MCP server exposing Kettle Logic insight articles & industry guidance as tools + resources.

league-loom

Read-only ESPN, Sleeper, and Fantrax fantasy leagues for Claude, ChatGPT, and other AI tools.

deals

Curated, human-reviewed deal feed for AI agents — live deal search + price watches. No auth.

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container-loading

Pack cargo into containers & onto pallets; a verifiable 3D loading plan. Free tier + REST API.

lemmebuyit-mcp

Search 86 US retailers — 260M+ products with real-time pricing, stock, and price history.

reference-data

African govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 34 countries; Ghana free.

mcp

Deterministic compliance and vertical knowledge bases for autonomous agents. Free 24hr trial.

appcontext

Live iOS Simulator and browser screenshots, logs, and a personal MCP hub for AI coding agents.

leadsapp

Search 136M+ US/CA B2B contacts free, verify emails free, get compliance verdicts. Pay per reveal.

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larabench

Search Laravel jobs, remote roles, Laravel news, and package releases in real time.

catalog

Search the Legends of Learning K-8 games catalog and standards alignment

agentmetal

Rent a Linux VPS from an AI agent: provision, SSH in, run commands. Pay USDC (x402) or card.

reference-data

Asian govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 28 countries; Japan free.

agent-web-reader

Pay-per-call data tools for AI agents: crypto signal, web reader, SEO audit. x402 USDC on Base.

pressuredesk

Read-only BUY / WAIT / AVOID spend gate for paid APIs, MCP endpoints, and x402 routes.

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reference-data

Oceania govt data, cited: rates, VAT, tax, wages, holidays, FX. 8 countries; Australia free.

extract

URL-to-Markdown API for AI pipelines — clean markdown with metadata and caching.

buddylists

Agent-only social network and labor market: presence, buddy lists, jobs with escrowed settlement.

cutlist-optimizer

Cutlist optimization for sheet, linear and roll stock, with grain, kerf, nesting and saw exports.

stocklake

AI stock intelligence: prices, fundamentals, technicals, news, macro regime, and sector signals.

tools

63 pay-per-call tools for agents: vision, text, data, web, blockchain. USDC on Base via x402.

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inistate-mcp

MCP server for the Inistate platform: module discovery, entry management, and activity submission.

mcp

Get social media data from Instagram and TikTok: profiles, posts, videos, comments, and more.

spip

Pilotez un site SPIP depuis Claude ou ChatGPT : rubriques, articles, médias, FAQ, formulaires.

mcp

Search & book Lakpura Sri Lanka tours, transfers, stays & activities as an AI agent.

lawstronaut-mcp

Connect AI to millions of laws and court cases with the Lawstronaut MCP.

trust-api

Score an IP, email, phone, domain or device for fraud in one call, with the signals behind it.

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learn-the-dao

Read, search and cite all 81 chapters of the Tao Te Ching, with per-rendering attribution.

directory

Search a curated directory of AI tools and MCP servers for law firms. Read-only, free, no auth.

anotherai

MCP server for building and testing AI agents with multi-model experimentation and insights.

mcp

Create, deploy, and operate MCP servers directly from your GitHub repositories.

mcp

Rebuilds the scores real systems run on you — credit, actuarial, lending — in the open, cited.

whatsapp-mcp-by-timelinesai

Drive your real WhatsApp inbox from Claude — send, reply, label, assign, and triage via TimelinesAI.

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lion-x402

Keyless attested data for AI agents: company enrichment, token risk, onchain reads. x402 on Base.

mnemon-mcp

Persistent layered memory for AI agents. SQLite FTS5, fact versioning, zero-cloud.

mcp

Search your AI chat history from Claude, Cursor, Codex, and other MCP clients.

llm-bus

Coordinate multiple AI agents over MCP: atomic claims, leases, shared ledger, handoffs, tasks.

pricing

Compare up-to-date pricing for 40+ LLMs (incl. Chinese) & estimate cost from tokens. EN/zh.

gpt-5-6-sol-agent

Authenticated async GPT-5.6-sol Agent agent with status polling and artifact results.

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opus-4-8-agent

Authenticated async Opus 4.8 Agent agent with status polling and artifact results.

sonnet-5-agent

Authenticated async Sonnet 5 Agent agent with status polling and artifact results.

receptionist-toolkit

Free receptionist tools: phone scripts, IVR menus (EN+ES), ElevenLabs prompts, missed-call math