Neo4j

Level: 2 · Versions tested: Neo4j 5.26 Community (tested). Other 5.x and Enterprise/Aura are expected to work but are not tested; 4.x is not supported (no Query API).

Authentication and transport

Basic auth over the HTTP Query API (port 7474, or 7473 with TLS). The Bolt protocol is not used, so no Bolt-only features (routing, bookmarks across sessions) are available. Use the HTTP port in the connection form.

Capabilities

Cypher editor (.cypher/.cyp, run the ;-terminated statement under the cursor), positional parameters bound as $p1, $p2…, explicit transactions (commit/rollback), labels as "tables" with property types from db.schema.nodeTypeProperties(), indexes from SHOW INDEXES. Not editable in the grid.

Type notes

Integers keep full 64-bit precision (typed JSON); nodes, relationships, paths, lists and maps are shown as JSON; dates, durations and points come back as server-formatted text.

Limits (honest)

• Results are returned by the server as one response, not streamed: use LIMIT. maxRows truncates on the client after download.
• Cancel aborts the HTTP request; the server may keep running the statement until it notices the closed connection.
• No EXPLAIN plan viewer.

Read-only enforcement

Client-side: a default-deny Cypher classifier (assessCypher) rejects anything not recognised as a read, including unknown procedures, PROFILE, LOAD CSV and multi-statement requests. For a server-side guarantee use a read-only Neo4j role.

External tools

none

Driver license

none (built on node:http)

Running the integration tests

docker compose -f test/compose/docker-compose.yml up -d neo4j then pnpm --filter @rizomadb/driver-neo4j test (HTTP port 17474, override with RZ_NEO4J_PORT; test credentials are in the compose file and in the test).