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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

phraseflip-mcp

Privacy-first local phrase-flipped translation for AI chat clients.

vault-health-mcp

Obsidian vault structural health: broken links, orphans, missing frontmatter, safe auto-repair.

mcp-yandex-direct

MCP server for Yandex Direct API v5: manage PPC campaigns, ads, keywords, and statistics.

ratary

Persistent coding memory for AI assistants. MCP stdio, hybrid search, graph, context.

brreg-no

Brønnøysund Register Centre (BRREG) MCP — Norway's official business register.

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onelogin-mcp

MCP server for OneLogin API - manage users, apps, roles, and authentication

mcp-launcher

Single MCP hub: discover, add, audit, and govern MCP servers across every AI client.

bungie

Bungie.net Destiny 2 + clan API: manifest, profile, characters, stats.

hebbian-vault

Usage-adaptive Obsidian vault search: Hebbian + PageRank + BM25 hybrid ranking.

fix-parser

Parse FIX messages and help agents create Fixie initiators.

clawtube-mcp

Minimal MCP server for ClawTube — a small, auditable control plane for skills and agents.

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bundesbank-de

Deutsche Bundesbank (Germany's central bank) statistics MCP.

cactus

NCI CACTUS Chemical Identifier Resolver MCP.

osf-data-marketplace

8.1M+ US gov and science data via x402 USDC. 21 tools, $0.001 sample tier, sanctions, SEC, CVEs.

carbon-intensity-uk

UK Carbon Intensity MCP (National Grid ESO).

tfl-mcp-server

Community-built server providing real-time London transport data via the TfL Unified API

glassypic

AI image processing: upscale, resize, crop, compress, convert file format, and generate SEO metadata

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mcp-contradiction-check

Find where your notes disagree — contradiction detection for markdown vaults.

cbioportal

cBioPortal MCP — cancer genomics portal.

celestrak

CelesTrak MCP — satellite orbital elements (TLE / GP data) for any tracked object.

cfpb

CFPB MCP — Consumer Financial Protection Bureau complaint database (free, no auth)

cheapshark

PC game deals across Steam/Epic/GOG/Humble via CheapShark. Keyless.

climate

Climate MCP — wraps Open-Meteo Climate API (free, no auth)

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close-crm

Close CRM MCP Pack — wraps the Close (close.com) API v1.

mcp-aguara

Scan skills, MCP configs, and agent content for injection and supply-chain risks. Offline, no LLM.

afya-ya-akili-mcp

MCP server for mental-health support coordination in East Africa (afya ya akili = mental health)

ardhi-mcp

MCP server for land records and land-service coordination in Kenya (ardhi = land)

jumuia-mcp

MCP server for community-group coordination in East Africa (jumuia = community)

enquire-mcp

Long-term memory for AI agents — your Obsidian vault as searchable persistent memory.

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mazingira-mcp

MCP server for environment and climate coordination in East Africa (mazingira = environment)

cbs-il

Israel Central Bureau of Statistics (CBS / הלשכה המרכזית לסטטיסטיקה) MCP.

mcp-server-mcpindex

MCP directory that vets servers: search by task, get an advisory screen (not a safety verdict).

stats-compass

50+ pandas-powered tools for data loading, cleaning, visualization, and ML workflows

censtatd-hk

Hong Kong Census and Statistics Department (C&SD) open-data MCP.

cftc-cot

CFTC Commitment of Traders (COT) MCP.

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chembl

ChEMBL MCP — drug discovery database (EBI).

ghidra-retro-mcp

Headless Ghidra MCP server with P-code emulation and multi-console ROM triage.

finops-mcp

See where your cloud and AI bills go, and spend less. Local-first, in your terminal or editor.

android-agent

Give any LLM agent a real Android or iPhone as its body. 62 MCP tools for mobile automation.

interviewer-mcp

Full technical interview prep: company briefing, concepts, code deep-dive, mock interviews.

lotor

A local receipt and approval gate for AI agent sessions. The agent can act, but it cannot sign.

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francolabs

UX research platform: manage studies, browse templates, read responses and analytics.

globalize

Localization for AI agents: projects, languages, glossaries and translations from your agent

osm-tagging-schema-mcp

MCP server for querying and validating OpenStreetMap tags

mcp-server-xlwings

Excel automation via xlwings COM. DRM-protected files, live sessions, VBA macros. Windows only.

mcp-gera-lens

GeraLens MCP (placeholder) — ambient camera-activated service discovery. Launching 2026-2027.

mcp-console-automation

MCP server for AI-driven console application automation and monitoring

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baepsae

Local MCP server for iOS Simulator and macOS app automation with a native Swift bridge

mcp-prowl

Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics.

cbs-nl

Statistics Netherlands (CBS / StatLine) OData MCP.