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一个模型上下文协议（MCP）服务器，让AI助手能够操作你的MongoDB数据库。它会暴露你的集合，推断其模式，并通过标准界面运行查询、聚合和写入——这样像Claude Desktop和Cursor这样的工具就能读取并推理你的数据。

演示

为什么要用它

• 用通俗易懂的语言与数据库对话 — 助理会自动发现你的收藏及其形状。
• 默认安全 — 开启只读模式，让助手探索时无需更改数据。
• 无处不在 — 通过纯连接或TLS连接独立、副本集、分片和Atlas部署。

主要特色

• 只读模式 — 阻断所有写入路径（插入、更新、索引创建和聚合阶段，如$out/$merge，可能修改数据）。
• Smart ObjectId 处理 — 可配置 auto/none/force 转换 24 字符十六进制字符串 ObjectId。
• 模式推理 — 自动从文档样本中检测模式收集。
• 查询与聚合 — 完整的查询和聚合流水线支持，附带可选的explain计划。

MCP MongoDB Server

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A Model Context Protocol (MCP) server that lets AI assistants work with your MongoDB databases. It exposes your collections, infers their schemas, and runs queries, aggregations, and writes through a standard interface — so tools like Claude Desktop and Cursor can read and reason about your data.

Demo

Why use it

• Talk to your database in plain language — the assistant discovers your collections and their shape automatically.
• Safe by default — turn on read-only mode to let an assistant explore without any risk of changing data.
• Works everywhere — connects to standalone, replica set, sharded, and Atlas deployments, over plain or TLS connections.

Key Features

• Read-Only Mode — blocks every write path (insert, update, index creation, and aggregation stages like $out/$merge that could modify data).
• Smart ObjectId Handling — configurable auto/none/force conversion of 24-character hex strings to ObjectIds.
• Schema Inference — automatic collection schema detection from document samples.
• Query & Aggregation — full query and aggregation pipeline support, with optional explain plans.
• Write Operations — insert, update, and index creation (when read-only mode is off).
• Time Conversion — a convertTime helper turns Unix timestamps and date strings into UTC/GMT/ISO, so date queries stay unambiguous across timezones.
• Progress & Cancellation — long operations report progress and can be cancelled mid-flight.
• Two Transports — run locally over stdio, or expose an HTTP endpoint for remote access.

Requirements

• Node.js 20 or newer

Quick Start

Point the server at your database — no install step needed:

npx -y mcp-mongo-server mongodb://localhost:27017/mydatabase

Explore safely, without any chance of changing data:

npx -y mcp-mongo-server mongodb://localhost:27017/mydatabase --read-only

Usage

Local (stdio)

This is the default, used by Claude Desktop, Cursor, and other local clients:

npx -y mcp-mongo-server "mongodb://user:pass@localhost:27017/mydatabase"

Remote (HTTP)

Expose an HTTP endpoint at /mcp for remote or multi-client access:

npx -y mcp-mongo-server "mongodb://user:pass@localhost:27017/mydatabase" --transport http --port 3001

By default, only requests without a browser Origin (CLIs, IDEs) and requests from localhost are accepted; everything else is rejected with 403 to guard against DNS-rebinding attacks. Allow specific browser origins with --allowed-origins: