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Neo4j Mcp Canary

neo4j-labs/neo4j-mcp-canaryOfficial

This is the experimental bleeding-edge version of Neo4j's MCP server, designed for testing new capabilities before they land in the official release. It connects to Neo4j databases (Aura, Desktop, or self-managed) and requires the APOC plugin installed. The server supports both stdio transport for desktop clients and HTTP mode with per-request authentication for web integrations. It performs startup checks in stdio mode to verify connectivity and APOC availability, while HTTP mode skips validation and starts immediately. Expect breaking changes between releases and no official support. Use this if you want early access to experimental graph database features and can tolerate instability.

GitHub stars: 3
tools: 37
auth: Secret needed
transport: STDIO
env vars: 4
last updated: Apr 21, 2026

Tools

37 tools

Public tool metadata for what this MCP can expose to an agent.

get-schemaIntrospect labels, relationship types, property keys

Introspect labels, relationship types, property keys

No parameter schema in public metadata yet.

read-cypherExecute arbitrary read-only Cypher

Execute arbitrary read-only Cypher

No parameter schema in public metadata yet.

write-cypherExecute arbitrary Cypher (write mode)

Execute arbitrary Cypher (write mode)

No parameter schema in public metadata yet.

explain-cypherReturn a query's plan without executing it

Return a query's plan without executing it

No parameter schema in public metadata yet.

profile-cypherExecute a query and return results plus a profiled plan with runtime stats

Execute a query and return results plus a profiled plan with runtime stats

No parameter schema in public metadata yet.

list-constraints-and-indexesList the database's constraints and indexes

List the database's constraints and indexes

No parameter schema in public metadata yet.

create-constraintCreate a UNIQUENESS, KEY, or PROPERTY_EXISTENCE constraint

Create a UNIQUENESS, KEY, or PROPERTY_EXISTENCE constraint

No parameter schema in public metadata yet.

drop-constraintDrop a constraint by name

Drop a constraint by name

No parameter schema in public metadata yet.

create-indexCreate a RANGE, TEXT, POINT, or LOOKUP index

Create a RANGE, TEXT, POINT, or LOOKUP index

No parameter schema in public metadata yet.

drop-indexDrop an index by name

Drop an index by name

No parameter schema in public metadata yet.

vector-searchApproximate nearest-neighbor similarity search against a vector index

Approximate nearest-neighbor similarity search against a vector index

No parameter schema in public metadata yet.

fulltext-searchLucene-backed full-text search against a fulltext index

Lucene-backed full-text search against a fulltext index

No parameter schema in public metadata yet.

create-vector-indexCreate a vector index for similarity search

Create a vector index for similarity search

No parameter schema in public metadata yet.

create-fulltext-indexCreate a fulltext index for text search

Create a fulltext index for text search

No parameter schema in public metadata yet.

set-vector-propertySet a node or relationship's embedding vector property

Set a node or relationship's embedding vector property

No parameter schema in public metadata yet.

check-embedding-dimensionsValidate a configured embedding provider/model against a vector index's dimensions

Validate a configured embedding provider/model against a vector index's dimensions

No parameter schema in public metadata yet.

create-nodeCreate a node with labels and properties

Create a node with labels and properties

No parameter schema in public metadata yet.

find-nodesFind nodes by label, property values and/or filters

Find nodes by label, property values and/or filters

No parameter schema in public metadata yet.

get-nodeGet one node plus its relationship counts by type and direction

Get one node plus its relationship counts by type and direction

No parameter schema in public metadata yet.

update-nodeSet/remove properties and add/remove labels on existing nodes

Set/remove properties and add/remove labels on existing nodes

No parameter schema in public metadata yet.

delete-nodeDelete nodes

Delete nodes

No parameter schema in public metadata yet.

count-nodesCount nodes matching labels/properties/filters

Count nodes matching labels/properties/filters

No parameter schema in public metadata yet.

create-relationshipCreate a directed relationship between two existing nodes

Create a directed relationship between two existing nodes

No parameter schema in public metadata yet.

find-relationshipsFind relationships by type, end nodes and/or properties

Find relationships by type, end nodes and/or properties

No parameter schema in public metadata yet.

update-relationshipSet/remove properties on existing relationships

Set/remove properties on existing relationships

No parameter schema in public metadata yet.

delete-relationshipDelete relationships (end nodes are kept)

Delete relationships (end nodes are kept)

No parameter schema in public metadata yet.

traverseWalk outward from a node: reachable nodes with depth, or the paths

Walk outward from a node: reachable nodes with depth, or the paths

No parameter schema in public metadata yet.

expand-neighborsEverything exactly one hop from a node

Everything exactly one hop from a node

No parameter schema in public metadata yet.

find-shortest-pathShortest route (or all tied shortest) between two nodes

Shortest route (or all tied shortest) between two nodes

No parameter schema in public metadata yet.

find-all-pathsEnumerate routes between two nodes, shortest first

Enumerate routes between two nodes, shortest first

No parameter schema in public metadata yet.

match-patternFind occurrences of a described pattern; return rows, a count, or existence

Find occurrences of a described pattern; return rows, a count, or existence

No parameter schema in public metadata yet.

find-common-connectionsNodes shared by 2–5 given nodes (shared neighbors)

Nodes shared by 2–5 given nodes (shared neighbors)

No parameter schema in public metadata yet.

find-motifDetect star, fan-in, fan-out, triangle or cycle shapes

Detect star, fan-in, fan-out, triangle or cycle shapes

No parameter schema in public metadata yet.

find-relationship-chainFollow an exact, ordered sequence of relationships from a node

Follow an exact, ordered sequence of relationships from a node

No parameter schema in public metadata yet.

find-subgraphExtract the neighborhood around a node as nodes + relationships

Extract the neighborhood around a node as nodes + relationships

No parameter schema in public metadata yet.

list-gds-proceduresList GDS procedures available in the Neo4j instance

List GDS procedures available in the Neo4j instance

No parameter schema in public metadata yet.

give-feedbackSubmit free-text feedback about the MCP server itself

Submit free-text feedback about the MCP server itself

No parameter schema in public metadata yet.

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Configuration

NEO4J_URI*

Neo4j connection URI

NEO4J_USERNAME*

Neo4j Database username

NEO4J_PASSWORD*secret

Neo4j Database password

NEO4J_DATABASE*

Neo4j Database name

Readme

Neo4j MCP Canary — The canary goes first so the rest of us know what's coming

Neo4j MCP Canary is a fast-moving, experimental release of the Neo4j MCP server for customers who want to explore emerging capabilities before they are considered for the official server.

Built on the source of the official Model Context Protocol (MCP) server for Neo4j, this variant is here for exploring potential new capabilities with experimentation.

As it is a labs project, be aware that:

It is not supported
It may contain breaking changes between its own releases and with the official Neo4j MCP server
It should be tested before using

Do not assume the canary will work for your situation. Test first.

Prerequisites

View the full README on GitHub

Details

Repository: github.com/neo4j-labs/neo4j-mcp-canary
Category: Databases
Package: neo4j-mcp-canary
Transport: STDIO
Auth: Required
Registry: MCP registry, active

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