Neo4j Memory MCP Server: Give Claude and Cursor a Graph Memory

• Reads the whole memory graph

  Returns every remembered entity and every link between them in one go. This can be large once the graph grows.

  Try: “Show me everything you remember about my projects.”

  Network · read_graph

• Searches memories by words

  Looks for entities whose name, type or notes match your words, and returns them with their connections. Partial matches and several words work.

  Try: “What do you remember about Dresden?”

  Network · search_memories

• Looks up memories by exact name

  Returns the entities with exactly the names you give, plus the links around them. It does not use search.

  Try: “Look up Oskar and Andreas in memory.”

  Network · find_memories_by_name

• Remembers new people, places or things

  Adds entities with a name, a type and a list of notes. If a name already exists the entity is reused, not duplicated.

  Try: “Remember that Michael lives in Dresden and works at Neo4j.”

  Write · create_entities

• Links remembered things together

  Adds a labelled link, such as WORKS_AT, between two entities that are already stored.

  Try: “Link Michael to Neo4j with WORKS_AT.”

  Write · create_relations

• Adds notes to a remembered thing

  Adds new notes to entities that already exist in memory, such as a new job title.

  Try: “Add a note that Oskar was promoted to Senior Engineer.”

  Write · add_observations

• Forgets entities and their links

  Permanently removes the named entities and every link they have. There is no undo.

  Try: “Forget everything about Old Company.”

  Delete · delete_entities

• Removes specific notes

  Removes exact note texts from an entity and keeps the entity itself. The text must match exactly.

  Try: “Remove the note "Outdated contact info" from John Smith.”

  Delete · delete_observations

• Removes specific links

  Removes links of a given type between two named entities and leaves the entities in place.

  Try: “Remove the WORKS_AT link between Andreas and Neo4j.”

  Delete · delete_relations

Watch out for

• It can delete memories and their links

  delete_entities removes entities and all their links for good, and the source says it cannot be undone. delete_observations and delete_relations also remove stored data. Back up the database if the memory matters. github.com

• It has no read-only mode

  The server has no switch to turn off writes or deletes. To stop changes, connect with a database user that has only read rights, though then it cannot save new memories. github.com

• It creates an index when it starts

  On start the server runs a query that creates a fulltext index named search on Memory nodes in your database if one is missing. github.com

• Your password sits in the client config

  The Neo4j password is stored in plain text in the config file or arguments. Use a dedicated database user with limited rights. github.com

• Memory content reaches your AI model

  Anything read from memory goes to the model provider your assistant uses. Do not store secrets as memories. github.com

• The README tool names are out of date

  The README lists search_nodes and find_nodes, but release 0.4.5 registers search_memories and find_memories_by_name. Use the names on this page. github.com

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