Read a Nastran OP2 result file.
AI agents call read_op2 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 performs a data retrieval operation on Nastran OP2 (output) files, which are result files containing analysis data. Reading result files has no side effects—it does not modify, delete, or execute operations. The verb 'read' clearly indicates a query/retrieval action. Severity is low because reading existing analysis results poses minimal risk to system integrity or data loss, even if an agent misuses it.
From the tool's definition Tool name 'read_op2' and description 'Read a Nastran OP2 result file' explicitly indicate a read operation that retrieves data from an existing file without modification.
Attacks that exploit this kind of access
Read a Nastran OP2 result file. 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 read_op2: 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.
read_op2 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 read_op2 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 read_op2. 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.
read_op2 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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