What is pcbparts-mcp CLAUDE.md?

Repository instructions for developing pcbparts-mcp, including preparation steps, versioning rules, testing requirements, and guidance for working with its component libraries and APIs.

Use them before changing the repository, when testing JLCPCB-related code locally, when updating the package version, or when preparing a commit.

They prevent contributors from using outdated code, testing against the live service, or making releases without the required version and workflow checks.

How Averyy/pcbparts-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Averyy/pcbparts-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/Averyy/pcbparts-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Averyy/pcbparts-mcp

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/averyy/pcbparts-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/averyy/pcbparts-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/averyy/pcbparts-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/averyy/pcbparts-mcp/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/averyy/pcbparts-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/averyy/pcbparts-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 905 This file is loaded in full into every session.

When invoked 905 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00905	$0.00905
Opus 5	$0.00452	$0.00452
Sonnet 5	$0.00181	$0.00181
Haiku 4.5	$0.00090	$0.00090

Measured 9d ago against content hash af1253a16d74, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

pcbparts-mcp CLAUDE.md scanned grade A with 0 findings 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 9d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Guidelines

Before Starting Work

Always run git pull first - Your local repo may be out of date.

Git Commit Rules

GET LATEST FIRST github actions runs automatically to commit new parts
NEVER commit without explicit permission only commit when user explicitly asks ("commit this", "push these changes")
NEVER add Claude attribution - No "Co-Authored-By: Claude" or similar
Always bump version in pyproject.toml (PATCH/MINOR/MAJOR per semver, ask permission before bumping major/minor, patch is the default)

Critical Rules

NEVER test changes using the live MCP undeployed code changes NEEDS to be tested locally via the database
ALWAYS use wafer when testing JLCPCB API - use wafer.AsyncSession with proper config (see client.py or scrape_components.py). Don't write quick test scripts with raw httpx/aiohttp - you'll get 403 blocked.
ALWAYS pair wafer timeout= with attempt_timeout= - timeout is a TOTAL budget across all retries/rotations, not a per-attempt cap. Unpaired, one hanging request eats the whole budget and retries never fire (this failed a sensor scrape and blocked a deploy on 2026-08-01). Sensor scrapers: use make_session()/attempt_cap() from scripts/scrapers/common.py.

Library Types (Quick Reference)

basic/preferred = no assembly fee
extended = $3 per unique part type

Project Overview

PCB Parts MCP server for electronic component search and sensor recommendation. See README.md for full tool documentation.

Sensor feature: sensor_recommend tool — separate SQLite DB (sensor.db) from components. 14 scrapers produce data/sensors/*.json, merged by scripts/build_sensor_db.py, runtime at src/pcbparts_mcp/sensor_db/. Scraper reference: docs/ref-sensor-scrapers.md.
Design rules: get_design_rules tool — 41 markdown reference files in data/design-rules/rules/, organized by category (guides, interfaces, power, protection, mcus, misc). Substring match on category/filename. Any edits to rule files must follow data/design-rules/rules/DESIGN-STYLE-GUIDE.md.

Read the full file on GitHub · 65 lines

Changes

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.

9d ago First seen · 65 lines · 905 tokens per session scan A af1253a16d74

Subscribe to this mod's changes

pcbparts-mcp CLAUDE.md is an instructions file published in the GitHub repository Averyy/pcbparts-mcp (108 stars, last pushed today), licensed MIT. It adds 905 tokens to every session, about $0.0045 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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pcbparts-mcp: Instructions file for Claude Code