open_node

Get detailed information about project entity/entities

SERVERProject Guardian MCP SOURCE1999azzar/project-guardian-mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/1999azzar-project-guardian-mcp-server/open-node.md

WHAT IT DOES

What open_node does on Project Guardian MCP

AI agents call open_node to retrieve information from Project Guardian MCP without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why open_node is rated Low

The tool retrieves detailed information about one or more entities from the knowledge graph. This is a pure read operation with no modification, deletion, or execution of code. Misuse risk is minimal as it only exposes stored project context data.

From the tool's definition 'Get detailed information about project entity/entities' — retrieves information only, no side effects

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs open_node safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Project Guardian MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For open_node, this is the rule to start with:

open_node Allowed

open_node is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "open_node": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Project Guardian MCP, apply this rule, and every open_node call is checked against it from then on.

FAQ

Questions about open_node

What does the open_node tool do? +

Get detailed information about project entity/entities. It is categorised as a Read tool in the Project Guardian MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on open_node? +

Register the Project Guardian MCP server in PolicyLayer and add a rule for open_node: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Project Guardian MCP. Nothing to install.

What risk level is open_node? +

open_node is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit open_node? +

Yes. Add a rate_limit block to the open_node rule in your PolicyLayer 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_node completely? +

Set action: deny in the PolicyLayer policy for open_node. 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_node? +

open_node is provided by the Project Guardian MCP server (1999azzar/project-guardian-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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