Get local variables for a stack frame.
AI agents call gdb_get_variables to retrieve information from Gdb Multiarch without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves local variables from a stack frame during debugging—a pure read operation with no side effects. It queries existing debug state without creating, modifying, deleting, or executing anything. While gdb is a powerful debugger, this specific tool is narrowly scoped to information retrieval.
From the tool's definition Tool name 'gdb_get_variables' and description 'Get local variables for a stack frame' indicate a read-only query operation that retrieves debug information without modifying state.
Attacks that exploit this kind of access
Get local variables for a stack frame. It is categorised as a Read tool in the Gdb Multiarch MCP Server, which means it retrieves data without modifying state.
Register the Gdb Multiarch MCP server in PolicyLayer and add a rule for gdb_get_variables: 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 Multiarch. Nothing to install.
gdb_get_variables 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 gdb_get_variables 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_get_variables. 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_get_variables is provided by the Gdb Multiarch MCP server (sbergeron42/gdb-multiarch-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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