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Reported issues for mongodb-mcp-server

Pod holds 7 of 7 GitHub reports that passed its relevance review. This can include external user reports, maintainer-confirmed bugs, and concrete feature gaps. Treat them as evidence to inspect, not a count of distinct defects.

Back to mongodb-mcp-server.

Most discussed

[Bug]: Space-separated --disabledTools values are silently ignored since 1.3.0, and the second value becomes the connection target

Version

Reproduced on 3.0.2, 2.1.1, 2.0.0, 1.8.0, 1.6.0, 1.5.0, 1.3.1 and 1.3.0. Works correctly on 1.2.0 and earlier, so this looks like a regression in 1.3.0.

App

Affected Models (if applicable)

Bug Description

The README and the [Enable or Disable MCP Server Features…

Read the thread · 2026-09-18 · open · external user · 9 comments

[Bug]: connect tool reports "Successfully connected" for OIDC before auth completes, hiding the device-flow URL + user code

Version: main (@ 9ed2d09); code references below are from main.

App: Other (Claude Code, via MCP)

Bug Description

When connecting with a MONGODB-OIDC connection string that uses the device-authorization flow, the connect tool returns "Successfully connected to MongoDB." even though authentication has not happened yet. The device-flow verification URL and user code never appear in the connect response. They only surface later, when the first data operation (e.g.…

Read the thread · 2026-06-21 · open · outside contributor · 6 comments

[Bug]: outputSchema declares draft-07 (inherited SDK default), making every tool unusable in Claude Code

Version

2.1.0 (also reproduced on 2.0.0 and 1.14.0)

App

Affected Models (if applicable)

Bug Description

Every tool on this server is currently unusable in Claude Code / Claude Desktop. find, count, aggregate, and list-collections all fail identically, at tool-registration time, before any request reaches the server…

Read the thread · 2026-08-12 · open · external user · 5 comments

[Bug]: All Atlas tools fail with "TypeError: Invalid URL" since 3.0.0 (node-fetch receives a platform Request)

Version

3.0.3 (also 3.0.0–3.0.2; 2.1.1 works on the same machine and config)

App

Affected Models (if applicable)

Bug Description

Every Atlas API tool of the local server fails with TypeError: Invalid URL before any request reaches the network: atlas-list-clusters, atlas-inspect-cluster, atlas-connect-cluster (logged as Error adding IP access list: Invalid URL, then `error inspecting…

Read the thread · 2026-09-19 · closed · external user · 4 comments

[Bug]: stdio server does not exit after stdin EOF, leaving orphaned processes

Version

1.13.0

Environment:

App

Affected Models (if applicable)

Not applicable. The behaviour occurs at the stdio process-lifecycle level.

Bug Description

When mongodb-mcp-server runs over stdio, it does not terminate after stdin reaches EOF.

This leaves MongoDB MCP processes running after the…

Read the thread · 2026-09-10 · closed · outside contributor · 4 comments

[Bug]: connectionName is missing from the list-connections text output, though it is present in structuredContent

Version

Reproduced on 3.0.3 and 3.0.2.

App

Affected Models (if applicable)

Bug Description

Bug Description

connect accepts an optional connectionName, described in its own input schema as:

Optional short label for the connection (stored slugified with a short suffix,
e.g.…

[Read the thread](https://github.com/mongodb-js/mongodb-mcp-server/issues/1576) · 2026-09-28 · open · external user · 2 comments

### Expose `collectProcessMetrics` as a CLI/env config option

### Summary

`@mongodb-js/mcp-metrics` already supports Node.js/process metrics via
`PrometheusMetricsOptions.collectProcessMetrics`, but there is no way to enable it
when running the published server (CLI or Docker image). Only library consumers who
construct their own `PrometheusMetrics` can turn it on.

Result: an HTTP-transport deployment scraping `/metrics` gets the three MCP metrics but
**no** heap, GC, event-loop-lag, or file-descriptor metrics for what is a long-running
Node process.…

[Read the thread](https://github.com/mongodb-js/mongodb-mcp-server/issues/1396) · 2026-07-27 · open · external user · 2 comments

## Most recent

The remaining reports are on [the project's issue tracker](https://github.com/mongodb-js/mongodb-mcp-server/issues).