PCBSignoff by CircuitNexa

Free AI review for your schematic and PCB.

Upload your design from Altium, KiCad, EasyEDA or any other tool. Get a severity-rated report by email within 24 hours, from Claude guided by our own library of PCB checks.

  • Runs on the most advanced Claude models available
  • Checked against our own 54-point library, not a generic prompt
  • Every finding names the part and gives the fix

Works with

  • Altium Designer
  • KiCad
  • EasyEDA
  • Eagle and Fusion
  • OrCAD and Allegro
  • and more

Choose your review

Pick one, then upload your files on the next page.

Free AI reviewClaude plus our check library. Emailed within 24 hours. FreeStart Schematic ReviewAdds datasheet-level pin checks and an engineer who verifies every finding. $99Start Full PCB ReviewEverything above plus BOM, Gerbers, pick-and-place and layout. $249Start
Your design stays private
  • Strict NDA by default. Every file is confidential from the moment you upload it. Nothing for you to sign.
  • Deleted after 30 days. We delete your files 30 days after we deliver your report.

Need your own NDA signed? Just ask.

Upload first. Paid reviews are invoiced after we check your files.

Every finding tells you what to fix

Each item names the part, explains the problem and gives the fix. Severity shows what to handle first.

Critical
The board may not work or could be damaged. Fix before ordering.
Major
Likely to fail or behave unreliably. Strongly recommended.
Tip
Saves cost or makes the board easier to build and debug.

How it works

Start free. Pay only if you want an engineer to check the AI's work.

  1. Upload your files

    Send a schematic PDF at minimum. A BOM and Gerbers make the review more useful.

  2. Get your free AI report

    Claude reviews your schematic, pins and BOM against our library of PCB checks and emails you a severity-rated report within 24 hours.

  3. Upgrade if you want more

    Paid reviews add datasheet-level pin checks and an engineer who verifies every finding before you get the report.

Claude reads your design. Our check library decides what to look for.

Every free review runs on the most advanced Claude models available, guided by PCBSignoff's own 54-point library of PCB checks written by our engineers. That is what separates it from pasting your schematic into a chat.

Pin-by-pin IC check
Every IC pin against its datasheet and reference design, including strapping and boot pins.
Power
Regulator ratings, input protection, sequencing and thermal limits.
Clocks, reset and boot
Crystal loading, reset circuits and boot configuration.
Interfaces
I2C pull-ups, SPI, UART and USB wiring and pin mapping.
BOM and sourcing
Stock, lifecycle, JLCPCB Basic versus Extended parts and cheaper equivalents.
Layout and assembly
Decoupling placement, return paths, clearances, Gerbers, pick-and-place and component polarity.
A general AI chat compared with the PCBSignoff free review
FeatureA general AI chatPCBSignoff free review
What it checks Whatever your prompt asks for Our 54-point library, applied to every board
Consistency Answers can differ from run to run The same checks and severity scale every time
PCB knowledge Broad general knowledge Checks for strapping pins, pull-ups, decoupling, polarity and JLCPCB parts
What you get A chat reply A severity-rated report with the part, the problem and the fix

Paid reviews with engineer verification

Fixed prices in USD. No quotes and no calls. Report in 48 to 72 hours after payment.

Schematic Review

For designs still before layout, or when you only need the circuit checked.

$99

  • Everything in the free AI review
  • Pin-by-pin check of every IC against its datasheet
  • Power, reset, boot and interface checks
  • Netlist and BOM consistency check
  • Every finding verified by an engineer
  • PDF report with the exact fix for each issue
  • One round of follow-up questions
Most complete

Full PCB Review

For finished boards about to go to fabrication and assembly.

$249

  • Everything in the Schematic Review
  • BOM review with stock, lifecycle and alternates
  • Gerber and drill review against your fab's rules
  • Pick-and-place file and component polarity check
  • Layout review: decoupling, return paths, clearances
  • Every finding verified by an engineer
  • PDF report and one round of follow-up questions

Upload your files first. We check them and email you a Wise invoice within one business day, and work starts when it is paid. Prefer GBP, EUR or AUD? Tell us and we will invoice in that currency. Boards up to 4 layers and about 150 components are included; email or message us on WhatsApp for larger boards.

Bring your design from any tool

  • Altium Designer
  • KiCad
  • EasyEDA
  • Autodesk Eagle
  • Fusion Electronics
  • OrCAD
  • Allegro
  • PADS
  • Proteus
  • DipTrace

Typical files: schematic PDF, native project files, netlist, BOM as CSV or Excel, Gerber and drill files as a zip, and a pick-and-place file. Not on the list? A PDF schematic, BOM and Gerbers work for any software.

Questions

Is the AI review really free?

Yes. You get one free AI review per email address each month, emailed within 24 hours. It runs on the most advanced Claude models available and is guided by our own library of PCB checks. It is not verified by an engineer, so treat it as a fast second opinion and check important findings yourself.

How is this different from pasting my schematic into an AI chat?

A general AI chat only checks what you ask, and its answers can vary from run to run. PCBSignoff applies the same library of PCB checks, written by PCB engineers, to every board and returns a severity-rated report that names the part, the problem and the fix.

What do I get with a paid review?

The same Claude review plus datasheet-level checks of every IC pin, followed by an engineer who verifies each finding. You receive a severity-rated PDF report with the exact fix for every issue, within 48 to 72 hours.

Which design tools and files do you accept?

Altium Designer, KiCad, EasyEDA, Autodesk Eagle and Fusion Electronics, OrCAD, Allegro, PADS, Proteus and DipTrace. If your tool is not listed, a PDF schematic, BOM and Gerber files work for any software.

Is my design kept confidential?

Yes. Every file is covered by a strict NDA by default, with nothing for you to sign. Your files are used only for your review and are deleted 30 days after we deliver your report. If you need your own NDA signed, just ask.

How do I pay?

After you upload your files, we check them and email you a Wise invoice, normally within one business day. You pay by card or bank transfer through Wise. Prices are in USD; if you prefer GBP, EUR or AUD, tell us and we will invoice in that currency. Work starts when the invoice is paid.

Do you guarantee my board will work?

No reviewer can guarantee that. We catch common and costly mistakes and show exactly what was checked. Our liability is limited to the fee paid. If we cannot open or review your files, you get a full refund.

Terms in brief

  • Reviews are advisory. You remain responsible for your design and for checking findings before you order.
  • Our liability is limited to the fee you paid. The free AI review is provided as is.
  • Every file is confidential under a strict NDA by default. It is shared only with the engineers and AI services used for your review, and deleted 30 days after delivery.
  • We may keep anonymised findings, never your design files, to improve the service.
  • Read the full Terms of Service and Privacy Policy.
  • Questions, or want your own NDA signed: hello@circuitnexa.com, WhatsApp +92 315 5040876 or LinkedIn.