feat: Add complete JLCPCB API integration with dual-mode support
Implements full JLCPCB parts catalog integration alongside existing local library search, giving users two complementary approaches for component selection: 1. Local Symbol Libraries (PR #25) - Search JLCPCB libraries installed via KiCad PCM - Pre-configured symbols with footprints - Works offline, no API needed 2. JLCPCB API Integration (NEW) - Complete 100k+ parts catalog access - Real-time pricing and stock information - Basic/Extended library type identification - Cost optimization and alternative suggestions - Package-to-footprint mapping New Features: - download_jlcpcb_database: Download complete parts catalog to local SQLite DB - search_jlcpcb_parts: Parametric search with pricing, stock, library type filters - get_jlcpcb_part: Detailed part info with price breaks and footprint suggestions - get_jlcpcb_database_stats: Database statistics and status - suggest_jlcpcb_alternatives: Find cheaper/available alternatives Implementation: - Python API client (commands/jlcpcb.py) - JLCPCB API authentication and data fetching - Parts database manager (commands/jlcpcb_parts.py) - SQLite storage and search - TypeScript MCP tools (tools/jlcpcb-api.ts) - User-facing tool definitions - Comprehensive documentation (docs/JLCPCB_USAGE_GUIDE.md) Database Features: - ~100k parts with descriptions, pricing, stock levels - Full-text search on descriptions and part numbers - Parametric filtering (category, package, manufacturer, library type) - Package-to-footprint mapping for KiCad - Intelligent alternative suggestions Setup Requirements: - JLCPCB_API_KEY and JLCPCB_API_SECRET environment variables - One-time database download (~5-10 minutes, 42MB) - requests library (already in requirements.txt) Benefits: - Cost optimization (identify Basic parts = free assembly) - Real-time stock checking - Complete catalog access - Works offline after initial download - Complements local library search 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
KiCAD MCP Bot
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python/commands/jlcpcb_parts.py
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419
python/commands/jlcpcb_parts.py
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"""
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JLCPCB Parts Database Manager
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Manages local SQLite database of JLCPCB parts for fast searching
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and component selection.
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"""
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import os
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import sqlite3
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import json
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import logging
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from pathlib import Path
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from typing import List, Dict, Optional
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from datetime import datetime
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logger = logging.getLogger('kicad_interface')
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class JLCPCBPartsManager:
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"""
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Manages local database of JLCPCB parts
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Provides fast parametric search, filtering, and package-to-footprint mapping.
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"""
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def __init__(self, db_path: Optional[str] = None):
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"""
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Initialize parts database manager
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Args:
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db_path: Path to SQLite database file (default: data/jlcpcb_parts.db)
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"""
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if db_path is None:
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# Default to data directory in project root
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project_root = Path(__file__).parent.parent.parent
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data_dir = project_root / "data"
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data_dir.mkdir(exist_ok=True)
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db_path = str(data_dir / "jlcpcb_parts.db")
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self.db_path = db_path
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self.conn = None
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self._init_database()
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def _init_database(self):
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"""Initialize SQLite database with schema"""
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self.conn = sqlite3.connect(self.db_path)
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self.conn.row_factory = sqlite3.Row # Return rows as dicts
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cursor = self.conn.cursor()
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# Create components table
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cursor.execute('''
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CREATE TABLE IF NOT EXISTS components (
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lcsc TEXT PRIMARY KEY,
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category TEXT,
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subcategory TEXT,
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mfr_part TEXT,
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package TEXT,
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solder_joints INTEGER,
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manufacturer TEXT,
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library_type TEXT,
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description TEXT,
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datasheet TEXT,
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stock INTEGER,
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price_json TEXT,
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last_updated INTEGER
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)
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''')
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# Create indexes for fast searching
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cursor.execute('CREATE INDEX IF NOT EXISTS idx_category ON components(category, subcategory)')
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cursor.execute('CREATE INDEX IF NOT EXISTS idx_package ON components(package)')
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cursor.execute('CREATE INDEX IF NOT EXISTS idx_manufacturer ON components(manufacturer)')
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cursor.execute('CREATE INDEX IF NOT EXISTS idx_library_type ON components(library_type)')
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cursor.execute('CREATE INDEX IF NOT EXISTS idx_mfr_part ON components(mfr_part)')
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# Full-text search index for descriptions
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cursor.execute('''
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CREATE VIRTUAL TABLE IF NOT EXISTS components_fts USING fts5(
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lcsc,
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description,
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mfr_part,
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manufacturer,
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content=components
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)
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''')
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self.conn.commit()
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logger.info(f"Initialized JLCPCB parts database at {self.db_path}")
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def import_parts(self, parts: List[Dict], progress_callback=None):
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"""
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Import parts into database from JLCPCB API response
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Args:
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parts: List of part dicts from JLCPCB API
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progress_callback: Optional callback(current, total, message)
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"""
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cursor = self.conn.cursor()
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imported = 0
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skipped = 0
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for i, part in enumerate(parts):
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try:
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# Extract price breaks
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price_json = json.dumps(part.get('prices', []))
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# Determine library type
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library_type = self._determine_library_type(part)
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cursor.execute('''
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INSERT OR REPLACE INTO components (
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lcsc, category, subcategory, mfr_part, package,
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solder_joints, manufacturer, library_type, description,
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datasheet, stock, price_json, last_updated
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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''', (
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part.get('componentCode'), # lcsc
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part.get('firstSortName'), # category
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part.get('secondSortName'), # subcategory
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part.get('componentModelEn'), # mfr_part
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part.get('componentSpecificationEn'), # package
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part.get('soldPoint'), # solder_joints
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part.get('componentBrandEn'), # manufacturer
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library_type, # library_type
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part.get('describe'), # description
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part.get('dataManualUrl'), # datasheet
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part.get('stockCount', 0), # stock
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price_json, # price_json
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int(datetime.now().timestamp()) # last_updated
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))
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imported += 1
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if progress_callback and (i + 1) % 1000 == 0:
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progress_callback(i + 1, len(parts), f"Imported {imported} parts...")
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except Exception as e:
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logger.error(f"Error importing part {part.get('componentCode')}: {e}")
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skipped += 1
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# Update FTS index
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cursor.execute('''
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INSERT INTO components_fts(components_fts, rowid, lcsc, description, mfr_part, manufacturer)
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SELECT 'rebuild', rowid, lcsc, description, mfr_part, manufacturer FROM components
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''')
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self.conn.commit()
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logger.info(f"Import complete: {imported} parts imported, {skipped} skipped")
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def _determine_library_type(self, part: Dict) -> str:
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"""Determine if part is Basic, Extended, or Preferred"""
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# JLCPCB API should provide this, but if not, we infer from assembly type
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assembly_type = part.get('assemblyType', '')
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if 'Basic' in assembly_type or part.get('libraryType') == 'base':
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return 'Basic'
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elif 'Extended' in assembly_type:
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return 'Extended'
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elif 'Prefer' in assembly_type:
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return 'Preferred'
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else:
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return 'Extended' # Default to Extended
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def search_parts(
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self,
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query: Optional[str] = None,
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category: Optional[str] = None,
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package: Optional[str] = None,
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library_type: Optional[str] = None,
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manufacturer: Optional[str] = None,
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in_stock: bool = True,
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limit: int = 20
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) -> List[Dict]:
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"""
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Search for parts with filters
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Args:
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query: Free-text search (searches description, mfr part, LCSC)
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category: Filter by category name
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package: Filter by package type
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library_type: Filter by "Basic", "Extended", or "Preferred"
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manufacturer: Filter by manufacturer name
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in_stock: Only return parts with stock > 0
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limit: Maximum number of results
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Returns:
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List of matching parts
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"""
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cursor = self.conn.cursor()
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# Build query
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sql_parts = ["SELECT * FROM components WHERE 1=1"]
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params = []
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if query:
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# Use FTS for text search
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sql_parts.append('''
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AND lcsc IN (
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SELECT lcsc FROM components_fts
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WHERE components_fts MATCH ?
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)
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''')
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params.append(query)
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if category:
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sql_parts.append("AND category LIKE ?")
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params.append(f"%{category}%")
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if package:
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sql_parts.append("AND package LIKE ?")
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params.append(f"%{package}%")
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if library_type:
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sql_parts.append("AND library_type = ?")
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params.append(library_type)
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if manufacturer:
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sql_parts.append("AND manufacturer LIKE ?")
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params.append(f"%{manufacturer}%")
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if in_stock:
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sql_parts.append("AND stock > 0")
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sql_parts.append("LIMIT ?")
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params.append(limit)
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sql = " ".join(sql_parts)
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try:
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cursor.execute(sql, params)
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rows = cursor.fetchall()
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return [dict(row) for row in rows]
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except Exception as e:
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logger.error(f"Search error: {e}")
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return []
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def get_part_info(self, lcsc_number: str) -> Optional[Dict]:
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"""
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Get detailed information for specific LCSC part
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Args:
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lcsc_number: LCSC part number (e.g., "C25804")
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Returns:
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Part info dict or None if not found
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"""
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cursor = self.conn.cursor()
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cursor.execute("SELECT * FROM components WHERE lcsc = ?", (lcsc_number,))
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row = cursor.fetchone()
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if row:
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part = dict(row)
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# Parse price JSON
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if part.get('price_json'):
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try:
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part['price_breaks'] = json.loads(part['price_json'])
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except:
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part['price_breaks'] = []
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return part
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return None
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def get_database_stats(self) -> Dict:
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"""Get statistics about the database"""
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cursor = self.conn.cursor()
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cursor.execute("SELECT COUNT(*) as total FROM components")
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total = cursor.fetchone()['total']
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cursor.execute("SELECT COUNT(*) as basic FROM components WHERE library_type = 'Basic'")
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basic = cursor.fetchone()['basic']
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cursor.execute("SELECT COUNT(*) as extended FROM components WHERE library_type = 'Extended'")
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extended = cursor.fetchone()['extended']
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cursor.execute("SELECT COUNT(*) as in_stock FROM components WHERE stock > 0")
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in_stock = cursor.fetchone()['in_stock']
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return {
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'total_parts': total,
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'basic_parts': basic,
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'extended_parts': extended,
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'in_stock': in_stock,
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'db_path': self.db_path
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}
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def map_package_to_footprint(self, package: str) -> List[str]:
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"""
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Map JLCPCB package name to KiCAD footprint(s)
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Args:
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package: JLCPCB package name (e.g., "0603", "SOT-23")
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Returns:
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List of possible KiCAD footprint library refs
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"""
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# Load mapping from JSON file or use defaults
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mappings = {
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"0402": [
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"Resistor_SMD:R_0402_1005Metric",
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"Capacitor_SMD:C_0402_1005Metric",
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"LED_SMD:LED_0402_1005Metric"
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],
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"0603": [
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"Resistor_SMD:R_0603_1608Metric",
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"Capacitor_SMD:C_0603_1608Metric",
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"LED_SMD:LED_0603_1608Metric"
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],
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"0805": [
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"Resistor_SMD:R_0805_2012Metric",
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"Capacitor_SMD:C_0805_2012Metric"
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],
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"1206": [
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"Resistor_SMD:R_1206_3216Metric",
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"Capacitor_SMD:C_1206_3216Metric"
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],
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"SOT-23": [
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"Package_TO_SOT_SMD:SOT-23",
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"Package_TO_SOT_SMD:SOT-23-3"
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],
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"SOT-23-5": [
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"Package_TO_SOT_SMD:SOT-23-5"
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],
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"SOT-23-6": [
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"Package_TO_SOT_SMD:SOT-23-6"
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],
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"SOIC-8": [
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"Package_SO:SOIC-8_3.9x4.9mm_P1.27mm"
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],
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"SOIC-16": [
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"Package_SO:SOIC-16_3.9x9.9mm_P1.27mm"
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],
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"QFN-20": [
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"Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm"
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],
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"QFN-32": [
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"Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm"
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]
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}
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# Normalize package name
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package_normalized = package.strip().upper()
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for key, footprints in mappings.items():
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if key.upper() in package_normalized:
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return footprints
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return []
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def suggest_alternatives(self, lcsc_number: str, limit: int = 5) -> List[Dict]:
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"""
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Find alternative parts similar to the given LCSC number
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Prioritizes: cheaper price, higher stock, Basic library type
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Args:
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lcsc_number: Reference LCSC part number
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limit: Maximum alternatives to return
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Returns:
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List of alternative parts
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"""
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part = self.get_part_info(lcsc_number)
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if not part:
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return []
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# Search for parts in same category with same package
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alternatives = self.search_parts(
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category=part['subcategory'],
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package=part['package'],
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in_stock=True,
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limit=limit * 3
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)
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# Filter out the original part
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alternatives = [p for p in alternatives if p['lcsc'] != lcsc_number]
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# Sort by: Basic first, then by price, then by stock
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def sort_key(p):
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is_basic = 1 if p.get('library_type') == 'Basic' else 0
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try:
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prices = json.loads(p.get('price_json', '[]'))
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price = float(prices[0].get('price', 999)) if prices else 999
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except:
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price = 999
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stock = p.get('stock', 0)
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return (-is_basic, price, -stock)
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alternatives.sort(key=sort_key)
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return alternatives[:limit]
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def close(self):
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"""Close database connection"""
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if self.conn:
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self.conn.close()
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if __name__ == '__main__':
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# Test the parts manager
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logging.basicConfig(level=logging.INFO)
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manager = JLCPCBPartsManager()
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# Get stats
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stats = manager.get_database_stats()
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print(f"\nDatabase Statistics:")
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print(f" Total parts: {stats['total_parts']}")
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print(f" Basic parts: {stats['basic_parts']}")
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print(f" Extended parts: {stats['extended_parts']}")
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print(f" In stock: {stats['in_stock']}")
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print(f" Database: {stats['db_path']}")
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if stats['total_parts'] > 0:
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print("\nSearching for '10k resistor'...")
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results = manager.search_parts(query="10k resistor", limit=5)
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for part in results:
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print(f" {part['lcsc']}: {part['mfr_part']} - {part['description']} ({part['library_type']})")
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