Sequential Thinking MVP Server

Instructions

Implementation Reference

• src/tools/handlers.ts:57-82 (handler)

  The core handler logic for the 'get_thought_branch' tool. It validates the required 'branchId' parameter, retrieves the specific thought branch using the SequentialThinkingManager, and formats the response as MCP content with JSON-serialized branch details including thought count and thoughts.

  case 'get_thought_branch': {
    const { branchId, sessionId } = args as { branchId: string; sessionId?: string };
  
    if (!branchId) {
      throw new ValidationError('branchId is required');
    }
  
    const branch = thinkingManager.getBranch(branchId, sessionId);
  
    return {
      content: [
        {
          type: 'text',
          text: JSON.stringify(
            {
              branchId,
              thoughtCount: branch.length,
              thoughts: branch,
            },
            null,
            2
          ),
        },
      ],
    };
  }

• src/tools/definitions.ts:69-86 (schema)

  The input schema and metadata definition for the 'get_thought_branch' tool, specifying required 'branchId' and optional 'sessionId' parameters.

  export const GET_BRANCH_TOOL: Tool = {
    name: 'get_thought_branch',
    description: 'Retrieves a specific branch of alternative reasoning paths',
    inputSchema: {
      type: 'object',
      properties: {
        branchId: {
          type: 'string',
          description: 'The identifier of the branch to retrieve',
        },
        sessionId: {
          type: 'string',
          description: 'Optional session ID (defaults to current session)',
        },
      },
      required: ['branchId'],
    },
  };

• src/index.ts:32-34 (registration)

  Registration of tool list handler that returns ALL_TOOLS array, which includes the 'get_thought_branch' tool schema.

  server.setRequestHandler(ListToolsRequestSchema, async () => {
    return { tools: ALL_TOOLS };
  });

• src/index.ts:37-39 (registration)

  Registration of the generic tool call handler that dispatches to handleToolCall, which contains the specific logic for 'get_thought_branch'.

  server.setRequestHandler(CallToolRequestSchema, async (request) => {
    return handleToolCall(request.params, thinkingManager);
  });

• src/server-http.ts:45-47 (registration)

  Tool list registration in HTTP server, exposing 'get_thought_branch' via ALL_TOOLS.

  server.setRequestHandler(ListToolsRequestSchema, async () => {
    return { tools: ALL_TOOLS };
  });