List all active breakpoints
AI agents call list_breakpoints to retrieve information from MCP Debug Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about existing breakpoints without creating, modifying, deleting, or executing any operations. It is a read-only diagnostic query similar to inspecting state. While it provides visibility into debugger state, it has no side effects on the debugged process or system.
From the tool's definition Tool name 'list_breakpoints' and description 'List all active breakpoints' indicate a query/retrieval operation with no modification or execution of processes.
Attacks that exploit this kind of access
List all active breakpoints. It is categorised as a Read tool in the MCP Debug Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Debug Server MCP server in PolicyLayer and add a rule for list_breakpoints: 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 Debug Server. Nothing to install.
list_breakpoints 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 list_breakpoints 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 list_breakpoints. 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.
list_breakpoints is provided by the MCP Debug Server MCP server (nickzer0/mcp-debugserver). 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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