kicad-happy is a collection of coding-agent skills and tools that inspect KiCad schematics, PCB layouts, and Gerber files for electronics design issues. It is for hardware designers who want automated reviews, simulations, datasheet checks, component sourcing, and fabrication preparation. The catalogue entries are its agent skills, rules, plugin, and instruction for integrating this workflow with coding agents.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add aklofas/kicad-happy --skill lcscgit clone --depth 1 https://github.com/aklofas/kicad-happyWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/aklofas/kicad-happy/lcsc)<a href="https://agentmods.dev/skills/aklofas/kicad-happy/lcsc"><img src="https://agentmods.dev/badge/skills/aklofas/kicad-happy/lcsc/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aklofas/kicad-happy/lcsc"><img src="https://agentmods.dev/badge/skills/aklofas/kicad-happy/lcsc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00174 | $0.03209 |
| Opus 5.5 | $0.00070 | $0.01284 |
| Sonnet 5.5 | $0.00035 | $0.00642 |
| Haiku 4.5 | $0.00017 | $0.00321 |
Grade A, and why
lcsc scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
- **OS-agnostic** — uses `requests` → `urllib` → `playwright` fallback chain (no wget/curl) How it starts
The opening of the file, as written. The whole thing — 242 lines — stays where its author put it; the contents beside it link to each section on GitHub.
LCSC Electronics — Component Search, Datasheets & Ordering
Related Skills
| Skill | Purpose |
|---|---|
kicad |
Schematic analysis — extracts MPNs for part lookup |
bom |
BOM management — orchestrates sourcing across distributors |
jlcpcb |
PCB assembly — shares the same parts library |
spice |
Uses LCSC parametric data for behavioral SPICE models (no auth needed) |
LCSC is JLCPCB's sister company — they share the same parts library and Cxxxxx part numbers. Use LCSC for production sourcing (assembled boards from JLCPCB/PCBWay). DigiKey/Mouser are for prototyping. For BOM management and export workflows, see bom.
Key Differences from DigiKey/Mouser
- No API key needed — jlcsearch community API is free and open
- Lower prices — especially for passives and Chinese-manufactured ICs
- JLCPCB integration — same LCSC part numbers used in JLCPCB assembly BOMs
- Direct PDF downloads — LCSC's CDN (wmsc.lcsc.com) serves datasheets without bot protection
- Low MOQ — many parts available in quantities as low as 1
- Warehouses — Shenzhen (JS), Zhuhai (ZH), Hong Kong (HK)
- Website:
https://www.lcsc.com
LCSC Part Numbers
Format: Cxxxxx (e.g., C14663). This is the universal identifier across both LCSC and JLCPCB. Use it for:
- Direct ordering on LCSC
- BOM matching in JLCPCB assembly (see
jlcpcbskill) - Cross-referencing between platforms
Component Search
Use search_lcsc.py to search LCSC and JLCPCB for electronic components, check live stock, inspect pricing tiers, identify basic vs. extended parts, and fetch parametric attributes. No API key required.
# Search by keyword or description
python3 <skill-path>/scripts/search_lcsc.py "tactile switch"
# Search for basic parts only (no JLCPCB extended loading fees)
python3 <skill-path>/scripts/search_lcsc.py "0805 100R" --basic
# Filter by package/footprint and stock
python3 <skill-path>/scripts/search_lcsc.py "red led" --package 0805 --in-stock
# Inspect full component details (manufacturer, datasheet URL, price breaks, parametric attributes)
python3 <skill-path>/scripts/search_lcsc.py "C318884" --details
# Output machine-readable JSON (for scripts and agent workflows)
python3 <skill-path>/scripts/search_lcsc.py "ME2108" --limit 5 --json
# Sort results by price or stock
python3 <skill-path>/scripts/search_lcsc.py "microcontroller STM32" --sort price
# Parametric category search (rows carry package, stock, price and attributes)
python3 <skill-path>/scripts/search_lcsc.py "STM32" --category microcontrollers
What ships with it
4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago Changed · +18 lines 84b5af2fc0e9
- 1mo ago First seen · 224 lines · 174 tokens per session scan A 1d295aa3f4e1
lcsc is a skill published in the GitHub repository aklofas/kicad-happy (1,504 stars, last pushed yesterday), licensed MIT. It adds 174 tokens to every session and 3,209 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
kicad-jlcpcb-workflow
Use this skill when the user asks to "design a PCB", "make a board", "build a PCB project", "order from JLCPCB", "create a schematic", "source LCSC parts", "wire up a board", "generate a PCB from a BOM", or any KiCad + JLCPCB workflow. Also use when working with .kicadpro or .kicadpcb files. Handles project setup…
pcb-layout
Use when placing footprints on a PCB, routing traces, adding vias or copper zones, deciding trace widths, or planning board layout strategy. Also use when the user asks about PCB stackup, ground planes, trace spacing, or component placement on a board.
schematic-design
Use when executing a schematic placement plan (plan mode) or modifying an existing schematic (modification mode).
verification
Use when running ERC or DRC checks, fixing electrical or design rule violations, debugging unconnected nets, resolving "power pin not driven" errors, or preparing a design for manufacturing export. Also use when the user says "my ERC has errors" or "DRC is failing.".
circuit-design
Use when designing an electronic circuit from requirements, choosing topology or regulator type, selecting component values, planning protection circuits, or deciding what goes on a board before schematic capture begins. Also use when the user asks "what components do I need" or "how should I power this.".
using-kicad
Use when starting any conversation involving electronics, KiCad, PCB design, schematic capture, circuit design, or EDA tasks.