PartReel — open KiCad parts registry for humans & AI agents
MCP serverAI & modelsPartreel gives your AI access to a library of verified KiCad footprints, symbols, and 3D models for electronic components. Once added, your AI can look up quality-checked part files for circuit board designs without any signup. Files are community curated and free to reuse under the CC-BY-4.0 license.
Use PartReel — open KiCad parts registry for humans & AI agents in Claude, ChatGPT or Ahel Desktop
Free. Sign in, add PartReel — open KiCad parts registry for humans & AI agents and connect your AI. About a minute.
Also: Claude Code · Cursor · Codex
Then ask your AI: use PartReel to search parts
No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.
Details
Available today. Use it from your connected AI after setup.
No key or account is asked for. Not verified by us yet: Ahel has not run a call through it.
Add Partreel, then ask your AI for the footprint, symbol, or 3D model of a component you are working with. It can also pull files for a whole list of parts from your board design.
What your AI can do with it
- Find verified footprints for electronic components
- Look up schematic symbols for specific parts
- Retrieve 3D models of components
- Fetch part files without creating an account
- Reuse downloaded files under the CC-BY-4.0 license
Install PartReel — open KiCad parts registry for humans & AI agents
The server’s own address, for the clients that take one directly. Or connect Ahel once and every client you use reads it from one address, with the account kept on Ahel rather than in each client’s config.
Claude Code
claude mcp add --transport http --scope user partreel-open-kicad-parts-regist 'https://mcp.partreel.com/mcp'Run it once in your project, then open /mcp to approve any sign-in the server asks for.
Claude Desktop
https://mcp.partreel.com/mcpAdd a custom connector in Settings, paste this address, and approve the sign-in.
Cursor
cursor://anysphere.cursor-deeplink/mcp/install?name=partreel-open-kicad-parts-regist&config=eyJ1cmwiOiJodHRwczovL21jcC5wYXJ0cmVlbC5jb20vbWNwIn0=Open the link and Cursor adds the server at that address.
ChatGPT
https://mcp.partreel.com/mcpIn Settings, enable Developer mode, create an MCP app, and paste this address. Your plan and workspace must allow custom apps.
Codex
codex mcp add partreel-open-kicad-parts-regist --url 'https://mcp.partreel.com/mcp'Run it once, then sign in with codex mcp login partreel-open-kicad-parts-regist if the server asks for an account.
From the project's README
As published by mingyo186/partreel in README.md.
No login. No paywall. Machine-verified. Every part ships as a bundle of
KiCad footprint (.kicad_mod) + symbol (.kicad_sym) + 3D model (STEP + GLB),
generated from manufacturer-datasheet dimensions and checked by automated
quality gates on every deploy.
Site: https://partreel.com · API: https://partreel.com/api/ ·
MCP server: https://mcp.partreel.com/mcp · Agent guide: https://partreel.com/agents/
Why this exists
- The official KiCad library is excellent — use it when it has your part. PartReel focuses on parts the official library doesn't cover (checked against GitLab master before we add anything).
- Aggregator sites lock downloads behind sign-ups; agents and scripts can't use them. Everything here is a plain URL.
- AI agents regenerate footprints from scratch every time — wasteful and
unverified. PartReel is the place to fetch a verified part instead, and
report back (
field_reportsin the API).
Provenance — verify us, don't trust us
Every part's API entry (/api/v1/parts/<id>.json) carries machine-readable
provenance: the exact datasheet figure/table each dimension came from
(dimensions_source), the generator source file in this repo, the quality
gates it passed, and field-usage reports. Gates run in CI on every push and
block deployment on failure — see .github/workflows/deploy.yml.
| Gate | Checks |
|---|---|
validate_kicad.py | s-expression structure, pads, layers, pin-1 |
| KLC drawing rules | silk 0.12 / fab 0.10 + pin-1 chamfer / courtyard 0.05 |
check_overlap.py | no overlapping text in previews |
check_render.py | files exist, SVG pads/outlines match source, pages/API present, datasheet cited |
check_zfight.py | no coplanar z-fighting faces, pins are individual bodies |
validate_step.py | STEP solids pass FreeCAD kernel isValid |
For AI agents
- Static JSON API, no auth, no rate limit:
/api/v1/parts.json - Remote MCP server (nothing to install):
claude mcp add --transport http partreel https://mcp.partreel.com/mcp— tools:search_parts,get_part,list_parts,submit_part,report_feedback,request_part,how_to_contribute - Machine guide:
/llms.txt - The loop: search → use → if a part is missing, build it from the datasheet and
submit_part— it is shared with every agent instantly (labeled unverified/staging), then hourly CI gates + review promote it to verified. request_partgenerates parametric families (pin headers, LDOs) server-side in ~5 min; the PR path (CONTRIBUTING-AGENTS.md) remains for 3D models and edits.
Repository layout
library/ part assets (CC-BY-4.0): .kicad_mod / .kicad_sym / .step / .glb / meta.json
generators/ parametric generators (Python; KiCad text + FreeCAD 3D) + quality gates
api/, p/, assets/ static site & JSON API (built by CI)
mcp/ Cloudflare Worker MCP server
License
Dimensions come from manufacturer datasheets and are provided as-is; verify before manufacturing.
Credits
Bug reports are contributions. Reporters whose feedback led to a fix are
recorded in CREDITS.md and in the fix commits as Reported-by:;
imported-library authors are credited in ATTRIBUTIONS.md.
Parts index
Currently 18258 parts, all machine-verified (structure, KLC drawing rules, render completeness, 3D coplanar/merged-pin checks, STEP kernel) with datasheet-cited dimensions.
connector (4330)
Shortened here. Read the whole README on GitHub.
Tools it offers (7)
What this server listed when Ahel dialed its public endpoint in Oct 2026, with no key and no account of yours. The names are the server’s own.
search_partsget_partlist_partsreport_feedbackrequest_parthow_to_contributesubmit_part
Signals
- GitHub stars
- 2
- Forks
- 1
- Last commit
- Sep 2026
Advanced
- Delivery
- partreel MCP server → your Ahel connector (mcp.ahel.ai) → your AI.
- Item type
- mcp-server
- Key
io-github-mingyo186-partreel- Source
- github.com/mingyo186/partreel
- Hosted endpoint
https://mcp.partreel.com/mcp
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