从错误输出中提取堆栈跟踪信息
AI agents call get_stack_trace to retrieve information from MCP Toolkit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and extracts stack trace information from existing error outputs. It performs no side effects, creates no resources, executes no code, and modifies no state. It is purely informational/diagnostic in nature, making it a Read category tool with low severity risk.
From the tool's definition Tool name 'get_stack_trace' and description '从错误输出中提取堆栈跟踪信息' (extract stack trace information from error output) indicate retrieval and parsing of diagnostic data without modification.
Attacks that exploit this kind of access
从错误输出中提取堆栈跟踪信息. It is categorised as a Read tool in the MCP Toolkit MCP Server, which means it retrieves data without modifying state.
Register the MCP Toolkit MCP server in PolicyLayer and add a rule for get_stack_trace: 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 MCP Toolkit. Nothing to install.
get_stack_trace 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_stack_trace 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_stack_trace. 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_stack_trace is provided by the MCP Toolkit MCP server (zxfgds/mcp-toolkit). 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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