For teams using traditional AIAG FMEA-4
Still using AIAG-RPN? Specwarden has you covered — no migration required.
Specwarden's engine supports AIAG-RPN traditional (S × O × D = RPN) and AIAG-VDA Action Priority in the same workspace. If your team uses the 4th Edition FMEA format, you don't need to migrate to keep reviewing. Built for the SMB Tier-2/3 shops that still run the format that's worked for a decade.
How it works
Upload your DFMEA
Drop in your spreadsheet — .xlsx, .xls, .csv, or .docx. Specwarden detects AIAG-RPN or AIAG-VDA format automatically. No configuration.
Review runs in under 60 seconds
7 deterministic rule checks run first, then Claude Sonnet reads every row for supplier-blame causes, vague language, and missing rationale.
Get a report you can act on
Download a PDF or Word report with every finding ranked by severity and a specific fix recommendation. Ready to attach to your design package.
Why Specwarden for AIAG-RPN reviews
Both
AIAG-RPN + AIAG-VDA in one account
Submit AIAG-RPN files for one customer and AIAG-VDA files for another. Detection is per-file, not per-account. One workspace handles both formats without configuration.
No
migration required to review
Some review tools only support the AIAG-VDA format. Specwarden supports both. If your OEM hasn't mandated migration yet, you can review your existing FMEA-4 files exactly as they are.
Same
AI engine as AIAG-VDA
The Sonnet 4.6 reviewer runs the same semantic checks on both formats — supplier-blame causes, vague descriptions, logical chain breaks. The standard affects which methodology checks run; the moat checks run on everything.
What we check on AIAG-RPN files
RPN arithmetic + threshold checks (U-002)
Verifies S × O × D = RPN on every row. Flags rows where the stated RPN differs from the calculated product. Also flags Sev 9-10 rows without action regardless of RPN value.
S/O/D scoring intent (M-001/M-002/M-003)
Catches the most common rating errors in AIAG FMEA-4: Severity colored by occurrence, Detection reflecting field returns instead of pre-release verification capability, Occurrence drawn from historical rates rather than current prevention controls.
Closed-loop validation on post-action ratings
Beyond the standard checks, Specwarden verifies that completed actions have revised S/O/D populated, revised RPN math is correct, and dramatic rating drops are justified by a specific documented change.
Built for engineering teams reviewing high-stakes technical documents.
Workflow proof
Reviews engineering documents against risk and compliance criteria
Use-case proof
Designed for FMEA, specs, quality checks, and design review workflows
Beta proof
Private beta feedback from technical reviewers and operators