write-cypher
Execute Cypher with write capabilities
Part of the Neo4j MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
WHEN AI AGENTS USE THIS TOOL
AI agents use write-cypher to create or modify resources in Neo4j. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
WHY ENFORCE A POLICY ON WRITE-CYPHER
Without a policy, an AI agent could call write-cypher repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Neo4j.
RECOMMENDED POLICY
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
tools:
write-cypher:
rules:
- action: allow
rate_limit:
max: 30
window: 60See the full Neo4j policy for all 4 tools.
DETAILS
MORE NEO4J TOOLS
SIMILAR WRITE TOOLS ON OTHER SERVERS
RELATED READING
FREQUENTLY ASKED QUESTIONS
What does the write-cypher tool do?
Execute Cypher with write capabilities. It is categorised as a Write tool in the Neo4j MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
How do I enforce a policy on write-cypher?
Add a rule in your Intercept YAML policy under the tools section for write-cypher. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Neo4j MCP server.
What risk level is write-cypher?
write-cypher is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Can I rate-limit write-cypher?
Yes. Add a rate_limit block to the write-cypher rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
How do I block write-cypher completely?
Set action: deny in the Intercept policy for write-cypher. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
What MCP server provides write-cypher?
write-cypher is provided by the Neo4j MCP server (neo4j/mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
ENFORCE POLICIES ON NEO4J
Open source. One binary. Zero dependencies.