open_nodes
Open specific nodes by their names
Part of the Memory MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
WHEN AI AGENTS USE THIS TOOL
AI agents call open_nodes to perform operations in Memory. While the risk category is not fully classified, applying a rate limit gives you visibility into how often the tool is called and prevents unexpected bursts of activity from autonomous agents.
WHY ENFORCE A POLICY ON OPEN_NODES
Applying a policy to open_nodes gives you an audit trail of every call an AI agent makes. Even for low-risk tools, visibility into agent behaviour helps you debug issues, optimise workflows, and maintain compliance with your organisation's security requirements.
RECOMMENDED POLICY
Apply a rate limit to control usage and monitor for unexpected behaviour.
tools:
open_nodes:
rules:
- action: allow
rate_limit:
max: 60
window: 60See the full Memory policy for all 9 tools.
DETAILS
MORE MEMORY TOOLS
read_graph Read search_nodes Read add_observations Write create_entities Write create_relations Write delete_entities Destructive delete_observations Destructive delete_relations Destructive SIMILAR OTHER TOOLS ON OTHER SERVERS
RELATED READING
FREQUENTLY ASKED QUESTIONS
What does the open_nodes tool do?
Open specific nodes by their names. It is categorised as a Other tool in the Memory MCP Server, which means it performs auxiliary operations.
How do I enforce a policy on open_nodes?
Add a rule in your Intercept YAML policy under the tools section for open_nodes. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Memory MCP server.
What risk level is open_nodes?
open_nodes is a Other tool with low risk. Read-only tools are generally safe to allow by default.
Can I rate-limit open_nodes?
Yes. Add a rate_limit block to the open_nodes 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 open_nodes completely?
Set action: deny in the Intercept policy for open_nodes. 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 open_nodes?
open_nodes is provided by the Memory MCP server (modelcontextprotocol/server-memory). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
ENFORCE POLICIES ON MEMORY
Open source. One binary. Zero dependencies.