jev.proIndependent unofficial Jev guide

Use cases· Last updated

Invoice human handoff with Jev

Pixels never go to System One. An OCR or vendor extractor turns the PDF into strings; Jev then asks whether that text packet looks like a duplicate, a PO mismatch, or a complete AP file. Code posts to the ERP. Jev does not key invoices.

This unofficial page is the human handoff slice of the invoice AP decisions pack. Intent: apply the Jev (TypeSafe System One) decision model to invoice AP decisions human handoff. Primary search language: Invoice Jev human handoff. Confirm patterns on docs.typesafe.ai. This site does not sell, issue, or proxy TypeSafe keys. Use a credential you already have from the console or a documented gateway.

Independent angle (cover ≠ clone): OCR extracts; Jev judges already-extracted text (duplicate/vendor/PO language). Amounts and dates stay in code — not a clone of invoice-OCR IA or a rival AP-recipe page.

Invoice use-case context

Handoff is a first-class outcome for invoice AP decisions, not a failure of Jev. When the AP router cannot auto-act, a human sees a packed extracted invoice packet + PO text — not a chat transcript. We do not ask Jev to write the reviewer essay.

Hub: Use cases. Compare, when the other tool is the real job: invoice OCR.

Human Handoff inputs

Humans should see what the model saw (filtered), not the warehouse dump you correctly refused to POST:

{
  "invoice": { "id": "INV-1044", "vendor_name": "Northwind Paper LLC", "memo": "Q3 copier paper — matches PO 88." },
  "po": { "id": "PO-88", "vendor_name": "Northwind Paper" },
  "extract": { "amount_cents": 128500, "invoice_date": "2026-03-12" },
  "policy": { "duplicate": "Same vendor + same amount_cents within 14 days is a duplicate suspect." }
}

Decision signals and actions

Signal Typical reason enum (you name it)
same_vendor mid-band entity_review
disposition duplicate_suspect / other dupe_desk
packet_complete Score low missing_po
Amount mismatch in code do_not_call_jev_for_math

These are application outcomes next to HTTP 200, not invented TypeSafe status codes.

Send the reviewer:

Do not treat a Noul of 0.5 as a “medium” invoice AP decisions score — it means yes and no are equally likely. Conjunctions stay in your code.

Guardrails and escalation

Do not page humans on a single Score unless your conjunction says so. Pair with confidence thresholds. TypeSafe’s confidence-gated examples use a lower bar for recoverable reads than for irreversible actions. Those numbers are illustrations. For invoice AP decisions, treat post_to_erp as the high bar (posting an invoice to the ERP). Tune on labels — see offline evaluation.

Evaluation and rollout notes

Write the gold label back into the offline set. That is how floors move. Pin jev-1.13.0 (the versioned id) after you fit thresholds. jev-latest and the marketing line jev-1.13 can move. Log the response model. TypeSafe’s published list price for jev-1.13 is $0.042 per million input tokens (vendor claim — confirm on the models page); output tokens are free on that same page. Unused distractors still bill as input.

Official Python and JavaScript SDKs read TYPESAFE_API_KEY and retry documented 429/529. This site does not sell, issue, or proxy TypeSafe keys. Use a credential you already have from the console or a documented gateway.

Pack map

Slice Page
Graph and primitives decision workflow
What may enter state input contracts
What to gather first evidence collection
Atomic rules policy checks
Act / review / abstain confidence thresholds
Reviewer payload you are here
What to persist audit trail
How it breaks failure modes
Labeled replay evaluation
Shadow → canary production rollout

FAQ

Is handoff a Jev failure? No. It is a first-class outcome. Abstention is “no auto action”; handoff is the queue you send that case to (glossary).

Should Jev draft the reviewer note? No. Send structured answers. Generation is the wrong job.

Where is the rest of the Invoice pack? Start with Invoice confidence thresholds and Invoice audit trail. Cluster hub: Use cases.

Can we skip OCR and send the PDF? No. Official models page: no image input. Extract first. See Jev vs invoice OCR.

Should Jev decide if $1,285.00 matches the PO? No. Compare cents in code. Jev judges leftover language (vendor strings, memos).

What this page does not claim

Disclaimer

This is an independent unofficial site and is not affiliated with TypeSafe AI; official documentation is available at https://docs.typesafe.ai.

Primary documentation: https://docs.typesafe.ai. Hub: Use cases.

Sources

Public TypeSafe or adjacent documentation only. No private claims.