Amazon Neptune MCP Server: Setup for Claude, Cursor and Other Apps

• Runs an openCypher query on your graph

  Runs the openCypher query you give it against the graph set in your setup and returns the result. It works on both Neptune Database and Neptune Analytics, and it can change data if the query does.

  Try: “Using the Neptune graph, find the ten people with the most connections.”

  Delete · run_opencypher_query

• Runs a Gremlin query on your graph

  Runs the Gremlin query you give it against the graph. The README lists Gremlin for Neptune Database only, and the query can change data.

  Try: “Run a Gremlin query that counts vertices by label.”

  Delete · run_gremlin_query

• Shows the labels and links in your graph

  Returns the graph schema: the vertex and edge labels and which vertices connect through which edges. The assistant uses it to write correct queries.

  Try: “What does my Neptune graph contain? Show me the schema.”

  Network · get_graph_schema

• Checks whether your graph is available

  Reports whether the configured graph is Available or Unavailable to the server. Use it to confirm the connection works.

  Try: “Is my Neptune graph reachable right now?”

  Network · get_graph_status

Watch out for

• It runs any query, including ones that delete data

  The README warns that the server runs whatever query it receives. Use an AWS role that allows only read queries unless you want changes. github.com

• Query results go to the assistant

  Whatever the graph returns is sent to the assistant and its provider. Keep sensitive graphs out of reach of the role you give it. github.com

• Your computer needs network access to the graph

  Neptune Database sits in a private network, so you need a route into it. Neptune Analytics can be reached through a public endpoint if you set one up. github.com

Security advisories