Release Notes

1.13.0

Released June 16, 2026

New features and updates:

Disables server-side JavaScript functions ($where, $function, and $accumulator) by default to prevent unintended behavior. To re-enable it, set disableServerSideJs to false in the configuration settings.
Adds an atlas-load-sample-dataset tool to load sample datasets into an Atlas cluster.
Adds an atlas-pause-resume-cluster tool to pause and resume Atlas clusters.

Bug fixes:

Fixes an issue where renaming a collection with dropTarget: true was not blocked when destructive operations were disabled.
Fixes an issue where mongosh CLI options such as oidcTrustedEndpoint were not applied in the connect-tool path.

Released June 4, 2026

New features and updates:

Adds an atlas-create-cluster tool to create M10–M80 replica set and single-shard Atlas clusters. The tool automatically selects a recommended instance size (M10 or M30) based on existing project clusters and returns immediately while the cluster provisions in the background.

Released May 22, 2026

New features and updates:

Adds an atlas-upgrade-cluster tool to upgrade Atlas Free or Flex clusters to a higher tier.
When connecting to Atlas Free or Flex tier clusters, the MCP Server now automatically checks for active resource alerts and surfaces a recommendation to upgrade when relevant thresholds are exceeded.
Adds a database-level aggregation tool.
The setup command now includes an option to download MongoDB Agent Skills alongside the MCP Server configuration.

Bug fixes:

Fixes an issue where atlas-list-clusters returned an error instead of an empty result.
Fixes an issue where aggregations were blocked when getSearchIndexes failed.
Fixes an aggregate schema compatibility issue with OpenAI models.
Fixes an issue with search index checks where the MCP server would incorrectly infer that a MongoDB deployment doesn't have Atlas Search support.

Released April 20, 2026

New features and updates:

Adds a maxTimeMS configuration option, allowing you to set a time limit for query execution.
Adds support for a configurable minimum log level.

Bug fixes:

Fixes an issue where the atlas-list-alerts missed open and active alerts.
Fixes an issue where the MCP Server API client did not fall back to browser-based fetch, which caused connectivity failures in certain environments.

Released March 24, 2026

New features and updates:

Adds a setup utility to simplify installation and configuration of the MCP Server for popular AI clients. To use the utility, run npx mongodb-mcp-server@latest setup and follow the interactive setup steps. For more details, see MCP Server setup utility.
MCP Server is now compatible with Claude Code and Open Code.
Adds new Atlas Stream Processing tools: atlas-streams-discover, atlas-streams-build, atlas-streams-manage, and atlas-streams-teardown.
Moves vector search and lexical search index management tools from public preview. Those tools can now operate on lexical and vector search indexes when available.
Adds a service to collect and report metrics about tool usage.
Removes MCP automated embeddings feature.
Adds support for deploying the MCP Server to Amazon Bedrock AgentCore.

Released March 13, 2026

Bug fixes:

Changes the behavior of the find tool to also return the total number of documents the query matched without the limit clause.
Fixes an issue where telemetry reported duplicate events.

For full release notes from versions 1.8.0 and earlier, see the MongoDB MCP Server Releases on GitHub.

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