cs_dbg_scopes
Return the variable scopes (Locals, etc.) for a C# stack frame.
This record as markdown: /tools/breakpoint-mcp/cs-dbg-scopes.md
What cs_dbg_scopes does on Breakpoint
AI agents call cs_dbg_scopes to retrieve information from Breakpoint without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
frame_id | integer | Yes | Frame id from cs_dbg_stack_trace |
Parameters from the server's own tool schema.
Why cs_dbg_scopes is rated Low
This tool retrieves debugging information (variable scopes) from a C# stack frame. It is a read-only operation with no side effects, simply returning data about the current debugging state.
From the tool's definition Return the variable scopes (Locals, etc.) for a C# stack frame
Attacks that exploit this kind of access
The rule that runs cs_dbg_scopes safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cs_dbg_scopes, this is the rule to start with:
cs_dbg_scopes is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every cs_dbg_scopes call is checked against it from then on.
Questions about cs_dbg_scopes
Return the variable scopes (Locals, etc.) for a C# stack frame. It is categorised as a Read tool in the Breakpoint MCP Server, which means it retrieves data without modifying state.
cs_dbg_scopes accepts 1 parameter: frame_id. Required: frame_id. The full parameter table on this page comes from the server's own tool schema.
Register the Breakpoint MCP server in PolicyLayer and add a rule for cs_dbg_scopes: 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 Breakpoint. Nothing to install.
cs_dbg_scopes 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 cs_dbg_scopes 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 cs_dbg_scopes. 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.
cs_dbg_scopes is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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