计算并返回表达式的值。 参数: - expression: 要计算的表达式 (如 x, *ptr, sizeof(var), x+y) 示例: - gdb_evaluate_expression({expression:
AI agents invoke gdb_evaluate_expression to trigger actions in GDB MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
Evaluating expressions in a GDB context can trigger side effects beyond simple reads — expressions may call functions, dereference pointers, or modify program state (e.g., calling a function with side effects). This goes beyond pure Read and falls into Execute. The blast radius is medium since it operates within a controlled debugger session but could alter the state of the debugged process.
From the tool's definition 计算并返回表达式的值 (evaluates and returns the value of an expression); examples include *ptr, sizeof(var), x+y
Attacks that exploit this kind of access
计算并返回表达式的值。 参数: - expression: 要计算的表达式 (如 x, *ptr, sizeof(var), x+y) 示例: - gdb_evaluate_expression({expression:. It is categorised as a Execute tool in the GDB MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the GDB MCP Server MCP server in PolicyLayer and add a rule for gdb_evaluate_expression: 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 GDB MCP Server. Nothing to install.
gdb_evaluate_expression is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the gdb_evaluate_expression 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 gdb_evaluate_expression. 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.
gdb_evaluate_expression is provided by the GDB MCP Server MCP server (zjm1060/gdb-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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