Files
claude-task-master/mcp-server/src/tools/expand-task.js

113 lines
3.0 KiB
JavaScript

/**
* tools/expand-task.js
* Tool to expand a task into subtasks
*/
// TEMPORARY: Using zod/v3 for Draft-07 JSON Schema compatibility with FastMCP's zod-to-json-schema
// TODO: Revert to 'zod' when MCP spec issue is resolved (see PR #1323)
import { z } from 'zod/v3';
import {
handleApiResult,
createErrorResponse,
withNormalizedProjectRoot
} from './utils.js';
import { expandTaskDirect } from '../core/task-master-core.js';
import {
findTasksPath,
findComplexityReportPath
} from '../core/utils/path-utils.js';
import { resolveTag } from '../../../scripts/modules/utils.js';
/**
* Register the expand-task tool with the MCP server
* @param {Object} server - FastMCP server instance
*/
export function registerExpandTaskTool(server) {
server.addTool({
name: 'expand_task',
description: 'Expand a task into subtasks for detailed implementation',
parameters: z.object({
id: z.string().describe('ID of task to expand'),
num: z.string().optional().describe('Number of subtasks to generate'),
research: z
.boolean()
.optional()
.default(false)
.describe('Use research role for generation'),
prompt: z
.string()
.optional()
.describe('Additional context for subtask generation'),
file: z
.string()
.optional()
.describe(
'Path to the tasks file relative to project root (e.g., tasks/tasks.json)'
),
projectRoot: z
.string()
.describe('The directory of the project. Must be an absolute path.'),
force: z
.boolean()
.optional()
.default(false)
.describe('Force expansion even if subtasks exist'),
tag: z.string().optional().describe('Tag context to operate on')
}),
execute: withNormalizedProjectRoot(async (args, { log, session }) => {
try {
log.info(`Starting expand-task with args: ${JSON.stringify(args)}`);
const resolvedTag = resolveTag({
projectRoot: args.projectRoot,
tag: args.tag
});
// Use args.projectRoot directly (guaranteed by withNormalizedProjectRoot)
let tasksJsonPath;
try {
tasksJsonPath = findTasksPath(
{ projectRoot: args.projectRoot, file: args.file },
log
);
} catch (error) {
log.error(`Error finding tasks.json: ${error.message}`);
return createErrorResponse(
`Failed to find tasks.json: ${error.message}`
);
}
const complexityReportPath = findComplexityReportPath(
{ ...args, tag: resolvedTag },
log
);
const result = await expandTaskDirect(
{
tasksJsonPath: tasksJsonPath,
id: args.id,
num: args.num,
research: args.research,
prompt: args.prompt,
force: args.force,
complexityReportPath,
projectRoot: args.projectRoot,
tag: resolvedTag
},
log,
{ session }
);
return handleApiResult(
result,
log,
'Error expanding task',
undefined,
args.projectRoot
);
} catch (error) {
log.error(`Error in expand-task tool: ${error.message}`);
return createErrorResponse(error.message);
}
})
});
}