MCP servers

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. This section lists servers with their transport, auth method and environment variables, an install command and an honest read on the risks.

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Found: 56

Official

Official HashiCorp Vault MCP server: mounts, KV secrets and PKI certificates from an agent

High risk65Repository stars
Official

Official Netlify MCP server: the agent creates projects, builds and deploys sites, manages environment variables and forms

High risk64Repository stars

Buildkite MCP Server

buildkite-mcp-server

Official

Official Buildkite MCP server: pipelines, builds, jobs, logs and test results for the agent

Medium risk54Repository stars
Official

Official Aiven MCP server: manage PostgreSQL, Kafka, applications and other services of the cloud data platform from an agent

High risk29Repository stars

LaunchDarkly MCP Server

LaunchDarkly local MCP server

Official

LaunchDarkly's official local MCP server: feature flags, AI Configs, environments and the audit log

High risk28Repository stars
Official

Official remote Raygun MCP server: the agent investigates errors, deployments, performance and user sessions

High risk22Repository stars
Official

Official Yandex demo templates: MCP gateways over cloud functions for YandexART, charts, PDF, arXiv, Kaggle and weather

Medium risk1Repository stars

YDB MCP connection demo built on a notes app

Simple CLI Notes Application with YDB

Official

An official YDB example: docker compose brings up a YDB database and the ydb-mcp server, and Cursor runs SQL through them right from chat

Medium risk

Frequently asked questions

What is an MCP server?

An MCP server connects an agent to external data and tools over a single protocol: files, databases, APIs and services. The agent calls its tools while it works.

How do I connect an MCP server to an agent?

The entry lists how to run it (npx, uvx, docker or a remote URL) and the environment variables. A config snippet goes into the agent settings.

Do I need a key or a paid account?

It depends on the server. Each entry states the auth method and requirements, including paid accounts, in the limitations block.