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stop_debug_session

Terminate an active debugging session and close the associated log server to end code instrumentation analysis.

Instructions

Stop the current debug session and shut down the log server.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • Handler logic for the 'stop_debug_session' tool: verifies active session, retrieves instruments, removes them via instrumenter, stops the session using sessionManager, nullifies instrumenter, and returns a success message with count of removed instruments.
    case 'stop_debug_session': {
      if (!sessionManager.isActive()) {
        return {
          content: [{ type: 'text', text: 'No active debug session to stop.' }],
        };
      }
    
      // Remove all instruments from files before stopping
      const instruments = sessionManager.getInstruments();
      if (instrumenter) {
        for (const instrument of instruments) {
          instrumenter.removeInstrument(instrument);
        }
      }
    
      await sessionManager.stopSession();
      instrumenter = null;
    
      return {
        content: [
          {
            type: 'text',
            text: `Debug session stopped. Removed ${instruments.length} instrument(s) from code.`,
          },
        ],
      };
    }
  • src/index.ts:48-55 (registration)
    Registration of the 'stop_debug_session' tool in the ListTools response, including name, description, and input schema (empty object).
    {
      name: 'stop_debug_session',
      description: 'Stop the current debug session and shut down the log server.',
      inputSchema: {
        type: 'object',
        properties: {},
      },
    },
  • Input schema definition for the 'stop_debug_session' tool, specifying an empty object with no properties.
    inputSchema: {
      type: 'object',
      properties: {},
    },
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It states the tool stops a session and shuts down a server, implying a destructive action, but does not disclose behavioral traits like whether this is reversible, what permissions are required, or potential side effects (e.g., losing logs). This leaves significant gaps for a tool that likely alters system state.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that front-loads the core action ('Stop') and resource. There is no wasted text, and it directly communicates the tool's purpose without redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (likely a destructive operation with no annotations or output schema), the description is minimally adequate but incomplete. It states what the tool does but lacks details on outcomes (e.g., what happens after stopping), error conditions, or dependencies, which are important for safe invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema has 0 parameters with 100% coverage, so no parameter documentation is needed. The description appropriately does not discuss parameters, earning a baseline score of 4 for not adding unnecessary information beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Stop') and target resource ('the current debug session and shut down the log server'), distinguishing it from sibling tools like 'start_debug_session' (which initiates rather than terminates) and 'clear_debug_logs' (which clears data rather than stopping the session).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage context by referencing 'the current debug session', suggesting it should be used when a debug session is active. However, it does not explicitly state when not to use it (e.g., if no session exists) or name alternatives like 'clear_debug_logs' for different cleanup needs.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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