Anthropic / Claude

import Anthropic from '@anthropic-ai/sdk';
import { CodeIndexer } from '@upstart.gg/lucerna';

const indexer = new CodeIndexer({ projectRoot: process.cwd() });
await indexer.initialize();
await indexer.indexProject();

const tools: Anthropic.Tool[] = [{
  name: 'search_code',
  description: 'Search the codebase for relevant code or documentation.',
  input_schema: {
    type: 'object',
    properties: {
      query: { type: 'string', description: 'Search query' },
      limit: { type: 'number', description: 'Max results', default: 5 },
    },
    required: ['query'],
  },
}];

async function handleToolCall(name: string, input: Record<string, unknown>) {
  if (name === 'search_code') {
    const results = await indexer.search(input.query as string, {
      limit: (input.limit as number) ?? 5,
    });
    return results.map(r => ({
      file:    r.chunk.filePath,
      type:    r.chunk.type,
      name:    r.chunk.name,
      lines:   `${r.chunk.startLine}–${r.chunk.endLine}`,
      content: r.chunk.content,
    }));
  }
}