Print the backtrace as absolute addresses by walking the frame pointer
AI agents call switch_my_bt 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 reads and displays the call stack (backtrace) by walking the frame pointer chain. It only retrieves and prints data about the current execution state without modifying memory, registers, or program flow. This is a passive read/inspection operation.
From the tool's definition Print the backtrace as absolute addresses by walking the frame pointer
Attacks that exploit this kind of access
Print the backtrace as absolute addresses by walking the frame pointer. 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 switch_my_bt: 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.
switch_my_bt 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 switch_my_bt 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 switch_my_bt. 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.
switch_my_bt 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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