MongoDB MCP Server is a Model Context Protocol server that enables MCP clients to interact with MongoDB databases and MongoDB Atlas. It supports Atlas API access via service accounts to empower Atlas tooling, and exposes a broad set of Atlas options (atlas-list-orgs, atlas-list-projects, atlas-create-project, atlas-list-clusters, atlas-inspect-cluster, atlas-create-free-cluster, atlas-connect-cluster, atlas-inspect-access-list, atlas-create-access-list, atlas-list-db-users, atlas-create-db-user, atlas-list-alerts, atlas-get-performance-advisor). It also provides access to MongoDB Database Tools such as connect, find, aggregate, count, insert-many, create-index, update-many, and more. The server can be configured in multiple ways: through environment variables, a MCP configuration file, direct command-line arguments, or Docker, and can optionally use a proxy for outbound calls. It supports running as a standard stdio MCP server or as an HTTP server via transport http, with configurable httpHost and httpPort. Logging and telemetry are configurable through loggers (disk, mcp, stderr), logPath, and MDB_MCP_TELEMETRY. Optional preview features include vectorSearch with Voyage AI embeddings, requiring voyageApiKey. The server also supports exporting data via the exportsPath, with exportTimeoutMs and exportCleanupIntervalMs, exposing an exported-data resource. Security best practices, readiness defaults (read-only mode in examples), and prerequisites (Node.js and credentials) are emphasized.