MongoDB

Document database: find, insert, update, and aggregate JSON-like documents

MongoDB documentationAPI checked August 18, 2026

Signs in with: Connection details
Runs on: Cloud or On-Prem Worker
Operations: 20
Ready-made triggers: 0

Connect MongoDB

In Neblex open Connect › Connections and click New Connection.
Search for MongoDB and give the connection a clear name.
Fill in the fields. Secret values are encrypted and never shown again.
Click Test, then Create Connection.

If the system is only reachable inside your network, choose an On-Prem Worker under Test from and run the flow on that Worker. See On-Prem Workers.

Field	What to enter
Connection setupRequired
HostRequired
PortOptional	Example: `27017`
DatabaseRequired
UsernameOptional
PasswordOptionalSecret
Use TLSOptional	Turning this off sends traffic and credentials without transport encryption. Use plaintext only for a customer-controlled endpoint that explicitly requires it.
Connection stringRequiredSecret	Paste a mongodb:// or mongodb+srv:// connection string. Only the guarded runtime's allow-listed URI options are accepted.

Use it in a flow

Open a flow, open the node library and search for MongoDB.
Drag it onto the canvas and choose an Operation and your connection.
Map the operation's fields from earlier steps, or click Map with Matt.
Use Test this step to see what it returns, then save.

To start a flow from MongoDB without a ready-made trigger: a Poll for changes trigger on MongoDB with your own query passes on new or changed records.

Operations

20 operations in 4 groups. Each one is a step you can add to a flow.

Admin7

Create a collection`createCollection`		Create a new collection.
Create an index`createIndex`		Create an index from a keys document.
Drop a collection`dropCollection`		Delete a collection and all its documents.
Drop an index`dropIndex`		Remove an index by name.
List collections`listCollections`		The collection names in the database.
List indexes`listIndexes`		The indexes on a collection.
Run a database command`runCommand`		Run any MongoDB database command (the arbitrary escape hatch).

Connection1

Test MongoDBping Run the server ping command against the configured database.

Count documents`countDocuments`		The number of documents matching the filter.
Distinct values`distinct`		The distinct values of a field across matching documents.
Find documents`find`		Query a collection; each matching document becomes one record.
Find one document`findOne`		The first document matching the filter, or nothing.
Run an aggregation`aggregate`		Run an aggregation pipeline; each result document becomes one record.

Write7

Delete many documents`deleteMany`		Delete every matching document.
Delete one document`deleteOne`		Delete the first matching document.
Insert a document`insertOne`		Insert one document; returns its inserted id.
Insert many documents`insertMany`		Insert a JSON array of documents.
Replace a document`replaceOne`		Replace the first matching document wholesale.
Update many documents`updateMany`		Apply an update to every matching document.
Update one document`updateOne`		Apply an update to the first matching document.