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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

402-mcp

AI agents discover, pay for, and consume any Lightning-gated API autonomously

mortality

Check whether an npm package, GitHub Action, MCP server or Docker image is dead or abandoned.

zammad-mcp

Every Zammad ticket, article, and Knowledge Base operation as one CLI and MCP server - plus a

mailkite

Send email, manage domains, DNS, webhooks, templates, and inbound routing on MailKite

blumen-komander-mcp

First German florist with a public MCP server. Search bouquets and order flowers via AI in Munich.

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mailverdict

Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.

auto-mobile

Mobile device interaction automation via MCP

mcp

Search indexed websites, read raw page markdown, and score AI visibility for any site.

infranode

Keyless open data for 84 German cities: 12 lean read-only MCP tools covering 67 data types.

mcp

Verification and trust checks for AI agents: validate, screen, propose, accounts, usage.

psyche-ai

Emotional intelligence for AI agents: neurotransmitter mood, personality, empathy, trait drift.

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agenticmemory

Persistent memory for AI agents — history, context, semantic search, queues. 17 tools, stdio/SSE.

server

Your AI discovers and installs MCP servers across Official Registry, Glama, and Smithery.

mcp

Test whether 3D assets survive Apple Quick Look and Safari <model>, then fix what fails

homes-mcp

homes.com real-estate for Claude — search, property details, photos, compare, mortgage math

mcp-server

Give your agent its own email address with graduated human oversight, from approval to autonomy.

verification-tools

Read-only AI coding tools for change verification, release readiness, capacity, and guidance.

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mcp-apple-music

Apple Music MCP server — search catalog, manage playlists, and access your library via Claude.

loadbearing

Checks .NET solutions against a fluent C# architecture spec and explains the rules to agents.

pagewatch

Read a URL as clean markdown, screenshot a website, url to PDF. Web access for agents, no signup.

pdfops-mcp

Deterministic PDF tools for AI agents: inspect fields, fill forms, merge PDFs, invoices.

servonaut

Manage AWS, Hetzner, OVH and SSH servers: status, logs, CloudWatch, IP bans, safe command exec.

clawcall

MCP server for ClawCall — AI-powered US phone calling.

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mcp-server

Competitive intelligence - track what competitors ship each week. 8 tools, 3 prompt workflows.

mcp

Read, edit, publish, and preview your pepita websites from Claude.

bridgistic

Connect Claude to WordPress safely: signed requests, scoped keys, approvals, logs, snapshots.

mermaid-mcp

MCP server for Mermaid diagram validation and rendering

unreal-api-mcp

Accurate UE5 C++ API docs for AI agents. Prevents hallucinated signatures and includes.

mcp

Architecture docs and patterns for NestJS + Nuxt full-stack apps

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slideforge

Deterministic, fully editable PowerPoint from typed slide intents. 150+ layouts, brand templates.

coreason-ecosystem

CoReason Tripartite Architecture Governance Plane. Stateless zero-trust federated MCP gateway.

ecardwidget-mcp

Send eCards, run bulk campaigns, and automate recurring cards from your AI assistant.

infrawise

Infrastructure analysis for AWS (15 tools) — DynamoDB, Lambda, SQS, SNS, S3, PostgreSQL, MongoDB.

docs

Search and read the StitchAPI docs: search_docs finds relevant sections, get_doc reads a page.

mcp

Tigris MCP Server seamlessly connects AI agents to Tigris bucket and object management.

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tidesman

A free native MCP server for running and debugging Linux containers with Apple's container tool.

prop65

Is a chemical on California's Proposition 65 list, and does it need a warning?

dingdawg-finance-agent

Financial analysis AI. Forecasting, audit prep, SOX/GAAP compliance. Accuracy compounds with use.

ibge-br-mcp

MCP server for live, sourced Brazilian public data from the official IBGE APIs.

secure-schema

Read-only MCP server for exposing database schema metadata without row data.

stale-write-guard-fs

Coherence guard for shared files: denies stale writes so agents don't silently overwrite each other.

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apollo-salesforce-mapper

Apollo->Salesforce Lead mapper. No LLM. Strict-fail required fields. PASS/REPAIR/FAIL verdict.

costa-rican-law-mcp

Costa Rican legislation via MCP — full-text search across statutes and provisions

professionals

Find skilled tradespeople in Spain — fontaneros, electricistas, pintores, cerrajeros.

mcp-server

OSS to create Personas, Skills, Templates, Agents, and Memories to customize your AI experience.

omni-nli

An MCP server for natural language inference

medical-terminologies-mcp

Diagnoses, drugs & lab codes: ICD-11, SNOMED, LOINC, RxNorm, MeSH, ATC, CID-10. 37 tools, MIT.

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devrel-directory

Search DevRel tools, communities, jobs, events, CFPs, and guides from devrel.directory.

dead-simple-email

Give an agent its own inbox: send, receive, and pull signup codes from real email.

catchr

Instant no-signup webhook & HTTP-request inspector for testing webhooks and agent tool-callbacks.