Use cases· Last updated 2026-09-21

Finance evidence collection with Jev

Invoice and spend packets arrive as messy descriptions. The ledger, tax engine, and approval matrix still own money. Jev judges policy-fit of the narrative you paste. It does not post journals or calculate tax.

This unofficial page is the evidence collection slice of the finance approval decisions pack. Intent: apply the Jev (TypeSafe System One) decision model to finance approval decisions evidence collection. Primary search language: Finance Jev evidence collection. 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): Typed exception + path questions with amounts extracted in code — not a clone of a finance-approvals product page or a rival AP-automation IA.

Finance use-case context

Evidence collection for finance approval decisions happens before POST /v1/systemone. Jev does not browse your warehouse, retriever, or ESP. You gather the spend / invoice narrative packet facts, filter them, then ask snap questions. This slice is where fan-out cost math belongs: batch questions, do not re-send state.

Hub: Use cases. Compare, when the other tool is the real job: finance approvals.

Evidence Collection inputs

Collect:

• Memo / line narrative as text
• The policy paragraphs the questions name
• Amount bands or integers extracted by OCR/ERP — pass numbers you already trust

Never send:

• Asking Jev to add line items or compute tax
• Unredacted account numbers
• The entire AP aging report as unused tokens

Shape the payload like this once the gather step finishes:

{
  "packet": { "id": "ap-4401", "memo": "Rush SaaS renewal; vendor changed SKU names.", "vendor": "Acme Cloud" },
  "amounts": { "total_band": "5-15k", "currency": "USD", "extracted_ok": true },
  "policy": { "sole_source": "Sole-source allowed only with named waiver text.", "rush": "Rush = business-critical outage risk." }
}

Decision signals and actions

Each evidence field should change a named answer:

Path + exception_severity + policy_ok share one state. Split a second call only when a later question needs an ERP flag you do not have yet.

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

Guardrails and escalation

If the gather step fails (empty spend / invoice narrative packet, redaction stripped everything, retriever empty), fail closed on posting an approval or payment instruction. Do not invent evidence so Jev has something to say. TypeSafe’s confidence-gated examples use a lower bar for recoverable reads than for irreversible actions. Those numbers are illustrations. For finance approval decisions, treat auto_approve_under_cap as the high bar (posting an approval or payment instruction). Tune on labels — see offline evaluation.

Evaluation and rollout notes

Your eval set should include thin-evidence cases, not only happy spend / invoice narrative packets. Label path gold, policy-ok gold, and whether a controller would have held the packet. 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

FAQ

Should evidence live in the question text? Put facts in state and point instructions at packet.memo, policy.sole_source, policy.rush, amounts.total_band. Criteria stay stable so you can replay.

When do I split calls? Path + exception_severity + policy_ok share one state. Split a second call only when a later question needs an ERP flag you do not have yet.

Where is the rest of the Finance pack? Start with Finance input contracts and Finance decision workflow. Cluster hub: Use cases.

Can Jev replace the ERP approval matrix? No. Hard caps, SoD, and tax stay in finance systems. Jev scores the narrative remainder. See vs finance approvals.

Should we send the invoice image? No. System One state is text. Run OCR/extract elsewhere, then pass bands you trust.

What this page does not claim

• Not a ledger, tax engine, or SOX control.
• No leakage or cycle-time numbers.
• Not official TypeSafe.
• Official TypeSafe status, or that jev.pro issues API keys.
• That a schema-constrained answer is automatically factually correct.

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.