n8n-nodes-memgraph

An n8n community node to interact with Memgraph – an in-memory graph database compatible with the Neo4j Bolt protocol.

Installation

In your n8n instance, go to Settings → Community Nodes and install:

n8n-nodes-memgraph

Or, for local/self-hosted n8n:

npm install n8n-nodes-memgraph

Prerequisites

A running Memgraph instance accessible via the Bolt protocol (default port 7687).

Quick start with Docker:

docker run -p 7687:7687 memgraph/memgraph

Credentials

Configure the Memgraph API credential with:

| Field | Description | Default | |----------|----------------------------------------------------------|----------------------------| | Bolt URL | Bolt connection URL | bolt://localhost:7687 | | Username | Username (leave empty if auth is disabled) | (empty) | | Password | Password (leave empty if auth is disabled) | (empty) |

Operations

Run Cypher Query

Execute any custom Cypher query and return all result records.

Parameters:

• Cypher Query – the query to execute (e.g. MATCH (n) RETURN n LIMIT 25)
• Query Parameters – JSON object of parameters referenced in the query (e.g. {"name": "Alice"})

Create Node

Create a new node with a label and a set of properties.

Parameters:

• Label – node label (e.g. Person)
• Properties – JSON object of properties (e.g. {"name": "Alice", "age": 30})

Returns the created node with its internal _id and _labels.

Get Node

Retrieve nodes by label with an optional property filter.

Parameters:

• Label – node label to match
• Filter Property – property name to filter by (optional)
• Filter Value – value to match (optional)
• Limit – max number of nodes to return (default 25)

Update Node

Update properties on nodes that match a label and a property value.

Parameters:

• Label – node label to match
• Match Property – property used to identify target nodes
• Match Value – value to match
• Update Properties – JSON object with properties to set/update (uses SET n += …)

Delete Node

Delete nodes matching a label and a property value.

Parameters:

• Label – node label to match
• Match Property – property used to identify target nodes
• Match Value – value to match
• Detach Relationships – if enabled (default), uses DETACH DELETE to remove connected relationships too

Returns { success, nodesDeleted, relationshipsDeleted }.

Create Relationship

Create a directed relationship between two nodes identified by their internal IDs.

Parameters:

• From Node ID – internal ID of the source node
• To Node ID – internal ID of the target node
• Relationship Type – relationship type (e.g. KNOWS, WORKS_AT)
• Relationship Properties – JSON object of properties for the relationship

Result Format

Node results include:

{
  "_id": 0,
  "_labels": ["Person"],
  "name": "Alice",
  "age": 30
}

Relationship results include:

{
  "_id": 0,
  "_type": "KNOWS",
  "_startNodeId": 0,
  "_endNodeId": 1,
  "since": 2020
}

Development

# Install dependencies
npm install

# Build (TypeScript + copy icons)
npm run build

# Watch mode
npm run dev

License

MIT