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MCP servers & agent tools: the tech stack of 40 real products

MCP servers, tool registries and integrations that give agents access to apps and data.

What sets them apart

Picks at least twice as common here as among products overall, in decisions at least 10 of them show.

Amazon BedrockLLM API7.1×as often as overall5 of the MCP servers & agent tools that show LLM API (31%)FastifyBackend Framework3.5×as often as overall5 of the MCP servers & agent tools that show backend framework (25%)SQLiteDatabase2.8×as often as overall8 of the MCP servers & agent tools that show database (33%)Better AuthAuthentication2.7×as often as overall6 of the MCP servers & agent tools that show authentication (50%)GitHub PagesHosting2.2×as often as overall6 of the MCP servers & agent tools that show hosting (30%)

The typical stack

The leading pick where at least 8 of them show the decision and the leader has at least a quarter of it.

DecisionMost common pickShareAt default usage
Frontend FrameworkReact22 of 28 · 79%—
DatabasePostgreSQL10 of 24 · 42%—
Backend FrameworkFastAPI10 of 20 · 50%—
HostingCloudflare10 of 20 · 50%$12/mo · Workers Paid
AI SDK & Agent FrameworkLangChain9 of 19 · 47%—
LLM APIOpenAI API11 of 16 · 69%$10/mo · GPT-6 Luna
AuthenticationBetter Auth6 of 12 · 50%$0/mo · Self-hosted (open source)
Database Access & ORMsDrizzle ORM6 of 8 · 75%—
Transactional EmailResend8 of 8 · 100%$20/mo · Pro 50k

Monthly bills add up to about $42 at the calculators' default usage, list prices. Set your own usage →

What they chose, decision by decision

Among the MCP servers & agent tools that show each choice, from makers' products and open-source code alike.

Frontend Framework28 products
React22 · 79%Next.js14 · 50%React Router4 · 14%TanStack Start3 · 11%
Database24 products
PostgreSQL10 · 42%SQLite8 · 33%Supabase3 · 13%MongoDB3 · 13%
Backend Framework20 products
FastAPI10 · 50%Express6 · 30%Fastify5 · 25%Hono4 · 20%
Hosting20 products
Cloudflare10 · 50%GitHub Pages6 · 30%Fly.io2 · 10%Amazon Web Services2 · 10%
AI SDK & Agent Framework19 products
LangChain9 · 47%AI SDK9 · 47%LangGraph4 · 21%LlamaIndex2 · 11%
LLM API16 products
OpenAI API11 · 69%Claude9 · 56%Amazon Bedrock5 · 31%Gemini API4 · 25%
Authentication12 products
Better Auth6 · 50%Clerk2 · 17%Auth.js2 · 17%Keycloak2 · 17%
Database Access & ORMs8 products
Drizzle ORM6 · 75%Kysely3 · 38%SQLAlchemy2 · 25%Prisma1 · 13%
Transactional Email8 products
Resend8 · 100%

Small samples, fewer than 8 products: Payments (Stripe 4, Polar 1) · Web Analytics (Vercel Web Analytics 5, Google Analytics 1) · Image & Video Hosting (sharp 4) · Product Analytics (PostHog 4) · Background Jobs & Cron (Inngest 1, Temporal 1) · Error Monitoring (Sentry 3) · Vector Database (pgvector 1, Pinecone 1)

MCP servers & agent tools we track

22 makers' products and 18 open-source projects. Makers' products first.

SwytchcodeProduction-Ready Integrations for AI Agents+2
UnabyssCollects context from the apps a person uses, structures it and keeps it updated, then shares it with AI tools over MCP with per-tool control over what each can see.
MCPJamTest, debug, and evaluate your MCP servers.
MCP-Builder.aiThe fastest way to connect your data with your AI Tools.
UseAgentsDefine tools once for agents use them everywhere
Disco.devPlug-and-play open source mcp servers
UTCPThe scalable, secure alternative to MCP for tool calling
valvYour database, safe for agents to query
archestraEnterprise AI Platform with guardrails, MCP registry, gateway & orchestrator+17
klavisKlavis AI: MCP integration platforms that let AI agents use tools reliably at any scale+6
casdoorAn open-source Agent-first Identity and Access Management (IAM) /LLM MCP & agent gateway and auth server with web UI supporting OpenClaw, MCP, OAuth, OIDC, SAML, CAS, LDAP, SCIM, WebAuthn, TOTP, MFA,
context7Context7 Platform -- Up-to-date code documentation for LLMs and AI code editors
actionbookLet your AI agent get the sources behind logins and paywalls.
corsairConnect your users to their apps+12
aciACI.dev is the open source tool-calling platform that hooks up 600+ tools into any agentic IDE or custom AI agent through direct function calling or a unified MCP server. The birthplace of VibeOps.+7
clawhubSkill + Plugin Registry for OpenClaw+1
WebMCPBringing the power of MCP to the web+1
docs-mcp-serverGrounded Docs MCP Server: Open-Source Alternative to Context7, Nia, and Ref.Tools
DevDocsCompletely free, private, UI based Tech Documentation MCP server. Designed for coders and software developers in mind. Easily integrate into Cursor, Windsurf, Cline, Roo Code, Claude Desktop App
mcp-gateway-registryEnterprise-ready MCP Gateway & Registry that centralizes AI development tools with secure OAuth authentication, dynamic tool discovery, and unified access for both autonomous AI agents and AI coding a+8
mcpauthAuthentication for MCP Servers+8
executorThe missing integration layer for AI agents. Let them call any OpenAPI / MCP / GraphQL / custom js functions in secure environment.+7
mcp-context-forgeAn AI Gateway, registry, and proxy that sits in front of any MCP, A2A, or REST/gRPC APIs, exposing a unified endpoint with centralized discovery, guardrails and management. Optimizes Agent & Tool call+4
mcpOpen source MCP Servers for AWS
playwriterChrome extension & CLI to let agents control your browser. Runs Playwright snippets in a stateful sandbox. Available as CLI or MCP
DiveDive is an open-source MCP Host Desktop Application that seamlessly integrates with any LLMs supporting function calling capabilities. ✨
doctorDoctor is a tool for discovering, crawl, and indexing web sites to be exposed as an MCP server for LLM agents.
mcp-chromeChrome MCP Server is a Chrome extension-based Model Context Protocol (MCP) server that exposes your Chrome browser functionality to AI assistants like Claude, enabling complex browser automation, cont
openmcpTurn any openapi file into an mcp server, with just the tools you need.
unity-mcpUnity MCP acts as a bridge between AI assistants and your Unity Editor. Give your LLM tools to manage assets, control scenes, edit scripts, and automate tasks within Unity.
MagicSkillsMagicSkills：Stop copying skills between agents. MagicSkills turns scattered SKILL.md folders into reusable, composable, tool-ready capabilities.
api-agentUniversal MCP server for GraphQL/REST APIs
mcp-uiUI over MCP. Create next-gen UI experiences with the protocol and SDK!