Get node information from BDF model.
AI agents call get_nodes to retrieve information from pyNastran MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves node data from a Nastran BDF (Bulk Data File) model without any side effects. It does not modify data, execute code, delete resources, or involve financial operations. The action is purely informational querying of model geometry/structure data, placing it firmly in the Read category with low severity risk.
From the tool's definition Tool name 'get_nodes' and description 'Get node information from BDF model' indicate a data retrieval operation with no modification or execution of external commands.
Attacks that exploit this kind of access
Get node information from BDF model. It is categorised as a Read tool in the pyNastran MCP Server MCP Server, which means it retrieves data without modifying state.
Register the pyNastran MCP Server MCP server in PolicyLayer and add a rule for get_nodes: 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 pyNastran MCP Server. Nothing to install.
get_nodes is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_nodes 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.
Set action: deny in the PolicyLayer policy for get_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.
get_nodes is provided by the pyNastran MCP Server MCP server (shaoqigit/pynastran-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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