MCP servers / mongodb-mcp-server

MCP tool changes

mongodb-mcp-server

2 of its last 5 updates changed what the agent reads: 0 tool descriptions rewritten, up to 3.1.0.

npm package · npm page · recorded on 24 October 2026 on a clean machine with placeholder settings; only tools/list was sent. A changed description is not a vulnerability. Method and limits.

Release by release

3.0.5 → 3.1.0

minor release, 15 October 2026

No tool definition changed.

2.1.2 → 3.0.5

major release, 1 October 2026

aggregate: input schema changed

aggregate-db: input schema changed

atlas-local-connect-deployment: input schema changed

atlas-local-create-deployment: input schema changed

atlas-local-delete-deployment: input schema changed

atlas-local-list-deployments: input schema changed

collection-indexes: input schema changed

collection-schema: input schema changed

collection-storage-size: input schema changed

connect: input schema changed

count: input schema changed

create-collection: input schema changed

create-index: input schema changed

db-stats: input schema changed

delete-many: input schema changed

disconnect: input schema changed

drop-collection: input schema changed

drop-database: input schema changed

drop-index: input schema changed

explain: input schema changed

export: input schema changed

find: input schema changed

insert-many: input schema changed

list-collections: input schema changed

list-connections: input schema changed

list-databases: input schema changed

list-knowledge-sources: input schema changed

mongodb-logs: input schema changed

rename-collection: input schema changed

search-knowledge: input schema changed

update-many: input schema changed

3.0.4 → 2.1.2

major release, 23 September 2026

aggregate: input schema changed

aggregate-db: input schema changed

atlas-local-connect-deployment: input schema changed

atlas-local-create-deployment: input schema changed

atlas-local-delete-deployment: input schema changed

atlas-local-list-deployments: input schema changed

collection-indexes: input schema changed

collection-schema: input schema changed

collection-storage-size: input schema changed

connect: input schema changed

count: input schema changed

create-collection: input schema changed

create-index: input schema changed

db-stats: input schema changed

delete-many: input schema changed

disconnect: input schema changed

drop-collection: input schema changed

drop-database: input schema changed

drop-index: input schema changed

explain: input schema changed

export: input schema changed

find: input schema changed

insert-many: input schema changed

list-collections: input schema changed

list-connections: input schema changed

list-databases: input schema changed

list-knowledge-sources: input schema changed

mongodb-logs: input schema changed

rename-collection: input schema changed

search-knowledge: input schema changed

update-many: input schema changed

3.0.3 → 3.0.4

patch release, 21 September 2026

No tool definition changed.

3.0.2 → 3.0.3

patch release, 18 September 2026

No tool definition changed.

Releases tried: 3.0.2 (2026-09-17); 3.0.3 (2026-09-18); 3.0.4 (2026-09-21); 2.1.2 (2026-09-23); 3.0.5 (2026-10-01); 3.1.0 (2026-10-15).

Tools in 3.1.0

The pin is the SHA-256 of the tool's name, description and input schema, as verfy.lock records it. The same pin in your lock means your agent reads this exact definition.

Tools in 3.1.0
Tool	Description	Pin
aggregate-db	Run an aggregation against a MongoDB database	1eb8f90e7df0
aggregate	Run an aggregation against a MongoDB collection	945ef3fb70d6
collection-indexes	Describe the indexes for a collection	b0629a1ac229
collection-schema	Describe the schema for a collection	a67a4b5d3d03
collection-storage-size	Gets the size of the collection	e0f1ec97fa79
connect	Connect to a MongoDB instance and get back a connectionId to pass to the other MongoDB tools. Each call establishes a new, independent connection — multiple connections can be active at the same time.	abb45dd6572a
count	Gets the number of documents in a MongoDB collection using db.collection.count() and query as an optional filter parameter	fe842a8d66a5
create-collection	Creates a new collection in a database. If the database doesn't exist, it will be created automatically.	2c551869f186
create-index	Create an index for a collection	0c6d6deb71a1
db-stats	Returns statistics that reflect the use state of a single database	5a5f50aceb2e
delete-many	Removes all documents that match the filter from a MongoDB collection	83aa114b5664
disconnect	Close a MongoDB connection and revoke its connectionId.	d2f1add1c7a5
drop-collection	Removes a collection or view from the database. The method also removes any indexes associated with the dropped collection.	dded4b7df6e1
drop-database	Removes the specified database, deleting the associated data files	80eafb10fd01
drop-index	Drop an index for the provided database and collection.	8a8da945e57f
explain	Returns statistics describing the execution of the winning plan chosen by the query optimizer for the evaluated method	84402fbd0c2f
export	Export a query or aggregation results in the specified EJSON format.	f4aa28b2e3b9
find	Run a find query against a MongoDB collection	ba9c462c7f9a
insert-many	Insert an array of documents into a MongoDB collection. If the list of documents is above com.mongodb/maxRequestPayloadBytes, consider inserting them in batches.	754bde2cea2b
list-collections	List all collections for a given database	9566061035d1
list-connections	List the active MongoDB connections and their connectionIds. Use this to find a connectionId established earlier.	9230aa381d4e
list-databases	List all databases for a MongoDB connection	beef905d5ec7
mongodb-logs	Returns the most recent logged mongod events	93e8d144f92d
rename-collection	Renames a collection in a MongoDB database	c5eeb0ec705e
update-many	Updates all documents that match the specified filter for a collection. If the list of documents is above com.mongodb/maxRequestPayloadBytes, consider updating them in batches.	04cc220221eb
atlas-local-create-deployment	Create a MongoDB Atlas local deployment. Default image is preview. When the user does not specify an image tag, inform them that preview is used by default and provide this link for more information: https://hub.docker.com/r/mongodb/mongodb-atlas-local	bc8ed6cb3f47
atlas-local-list-deployments	List MongoDB Atlas local deployments	87cc07944537
atlas-local-delete-deployment	Delete a MongoDB Atlas local deployment	f40bca39f796
atlas-local-connect-deployment	Connect to a MongoDB Atlas Local deployment and get back a connectionId to pass to the other MongoDB tools	6629acc5ebd8
search-knowledge	Search for information in the MongoDB Assistant knowledge base. This includes official documentation, curated expert guidance, and other resources provided by MongoDB. Supports filtering by data source and version.	4b03871b6404
list-knowledge-sources	List available data sources in the MongoDB Assistant knowledge base. Use this to explore available data sources or to find search filter parameters to use in search-knowledge.	b30256e24be0

Lock these tools

Pin what mongodb-mcp-server serves you today, commit the lock, and a pull request fails when a tool changes, with the text before and after. Pin the package version in your MCP config as well.

$ pip install verfy
$ verfy lock check --update   # shows each tool, then writes verfy.lock
$ git add verfy.lock

# .github/workflows/verfy.yml, after actions/checkout
- uses: anvarbekovjavohir277-dot/verfy-action@v1

Maintain this server? Run the same check on your releases and add the Locked by Verfy badge to your README.