Field Recording Triage
Paste recording logs and sound descriptions; Jev checks independent asset-use conditions, which code combines into keep, inspect, or exclude labels.
Noul Check· yes/no probability
Section · Jev
full primer →The kernel.
Jev answers a short checklist of yes/no questions about Field recording for musicians, each as a probability, and simple rules turn them into pass, review or fail.
Why this primitiveTyped checks separate practical asset risks from artistic judgment and make large libraries easier to review.
Kernel
several independent Jev `noul` questions (one per condition) asked together over the same state, combined by explicit code rules
Drives the UI as
a checklist of conditions, each with a 0-1 probability meter and a pass / review / fail colour from code-owned thresholds
Required key.
TYPESAFE_API_KEY
Your TypeSafe key. The mega-prompt asks for it with a secure form and keeps it on the server. Jev returns typed decisions: choice, noul (yes/no probability) and score.
open ↗Add this in your Lovable project under Settings → Secrets before pasting the prompt below.
Appendix · Mega-prompt
The build prompt.
budget · 1 message
Paste into a fresh Lovable project. Make sure the key above is set first. read the build strategy →
Build "Field Recording Triage" as a ONE-SHOT Lovable build (~5 credits, no follow-ups).
Single-page TanStack Start app, one route, cut scope ruthlessly.
THIS PROMPT IS SELF-CONTAINED
Do not assume the participant knows Jev or has read any other page. TypeSafe Jev is a decision model,
not a text generator. It receives `state` plus a map of typed `questions` and returns JSON that code can
use directly. Use Choice to select exactly one defined option, Noul for a yes/no probability from 0 to 1,
and Score for a probability-weighted position across ordered levels. Keep rules, thresholds, arithmetic,
and actions in code. Use a generative model only if the product separately needs prose.
CONCEPT
Paste recording logs and sound descriptions; Jev checks independent asset-use conditions, which code combines into keep, inspect, or exclude labels.
Discipline: Music & Sound Design (Field recording).
Jev pattern: Noul Check (yes/no probability) — several independent Jev `noul` questions (one per condition) asked together over the same state, combined by explicit code rules.
Why typed decisions: Typed checks separate practical asset risks from artistic judgment and make large libraries easier to review.
ENGINE: TypeSafe Jev (typed decisions, not text)
- Before writing code, ask the participant for `TYPESAFE_API_KEY` with Lovable's secure secret form. Never
ask them to paste it into chat, never prefix it with `VITE_`, and never expose it to browser code.
- Put the callable server function in `src/lib/jev.functions.ts`; do not import a server-only module from UI code.
- Validate the user's input before the handler and read `process.env['TYPESAFE_API_KEY']` inside the handler.
- From the server, call:
POST https://api.typesafe.ai/v1/systemone
Authorization: Bearer <TYPESAFE_API_KEY>, Content-Type: application/json
body: { "model": "jev-latest", "state": <Recording log, sound description, and intended use>, "questions": QUESTIONS }
- Ask all questions in ONE request (they run in parallel and cannot see each other).
- Read Choice from `answers[id].choice`, `.probabilities`, and `.confidence`; Score from `.score`,
`.probabilities`, `.legend`, and `.confidence`; Noul from `.noul` only (it has no separate confidence).
SERVER IMPLEMENTATION (adapt the input name and result mapping to this concept)
```ts
import { createServerFn } from "@tanstack/react-start";
import { z } from "zod";
const Input = z.object({ text: z.string().trim().min(1).max(20000) });
export const decide = createServerFn({ method: "POST" })
.inputValidator((input: unknown) => Input.parse(input))
.handler(async ({ data }) => {
const apiKey = process.env['TYPESAFE_API_KEY'];
if (!apiKey) return { ok: false as const, status: 500, message: "TYPESAFE_API_KEY is not configured." };
const requestBody = {
model: "jev-latest",
state: { text: data.text },
questions: QUESTIONS,
};
let response: Response | undefined;
for (let attempt = 0; attempt < 3; attempt += 1) {
response = await fetch("https://api.typesafe.ai/v1/systemone", {
method: "POST",
headers: { Authorization: `Bearer ${apiKey}`, "Content-Type": "application/json" },
body: JSON.stringify(requestBody),
});
if (response.ok || (response.status !== 429 && response.status < 500)) break;
if (attempt < 2) await new Promise((resolve) => setTimeout(resolve, 750 * 2 ** attempt));
}
if (!response) return { ok: false as const, status: 503, message: "Jev did not respond." };
if (!response.ok) {
const message = (await response.text()).slice(0, 500) || `Jev request failed (${response.status}).`;
return { ok: false as const, status: response.status, message };
}
const result = await response.json();
return { ok: true as const, answers: result.answers };
});
```
In the page component, call `decide` with `useServerFn`, preserve the participant's input while loading or
on error, disable duplicate submissions, and render the returned typed values rather than parsing prose.
QUESTIONS (start here, refine wording if needed)
{
"usable_context_recorded": {
"type": "noul",
"instructions": "Is the recording context documented well enough to identify the asset?",
"criteria": {
"true": "Location or source, date, and take context are sufficiently noted.",
"false": "Key context is absent or ambiguous."
}
},
"unwanted_noise_present": {
"type": "noul",
"instructions": "Does the description indicate unwanted noise that may compromise the intended use?",
"criteria": {
"true": "Noise is described as intrusive for the intended use.",
"false": "No intrusive noise is described."
}
},
"permission_uncertain": {
"type": "noul",
"instructions": "Is permission or ownership uncertain for the intended use?",
"criteria": {
"true": "The notes indicate unresolved permission or ownership.",
"false": "Permission is documented or not in question."
}
}
}
DECISION RULES (in code, not in the model)
- choice/score: if confidence < 0.6 show a "needs review" badge instead of acting.
- noul: >= 0.75 = yes, <= 0.25 = no, otherwise "review".
- score: normalise with score / (levels - 1) before combining with weights.
- Missing or malformed answers go to review. Show safe HTTP status and message in the UI. Retry only 429/5xx,
at most twice with increasing delay; never retry 400/401/402/403/404 and never invent results.
- If the product needs prose (a summary, a message), use Lovable AI for that text only; Jev makes the decisions.
UI
a checklist of conditions, each with a 0-1 probability meter and a pass / review / fail colour from code-owned thresholds. Include 2 sample inputs as one-click chips so the demo works instantly.
Tailwind + shadcn, editorial look, footer: "Built during the Creative AI & Quantum Hackathon organised by StreetKode Fam during Indian Krump Festival 14".
NO database, NO auth, NO extra pages, NO tests.
BEFORE YOU FINISH
- Run the app and test both sample inputs through the real server function.
- Confirm the browser receives no API key and no fabricated fallback result.
- Confirm Choice/Score confidence and Noul probability drive the stated review rules.
- Confirm loading, success, review, empty-input, and service-error states are readable on mobile.
Reference only if needed: https://docs.typesafe.ai/api and https://docs.typesafe.ai/primitives
Market sizing.
TAM
$1B sound library and audio asset tools
SAM
$140M field recording management
SOM
$2M sound libraries
Indicative figures for hackathon pitches — refine with your own research before raising.
Adjacent entries.
Demo production
Demo Readiness Gate
Paste a demo’s notes and mix metadata; Jev checks independent readiness conditions, which code combines into a go, revise, or hold decision.
Sample clearanceSample License Scout
Paste sample descriptions and project-use details; Jev checks independent clearance conditions, which code combines into a review flag.
Live performance planningSetlist Arc Checker
Paste a setlist with song notes and performance constraints; Jev checks independent flow conditions, which code combines into reorder suggestions or a readiness flag.
Sound designCue Sheet Auditor
Paste a scene cue sheet and production constraints; Jev checks independent cue-integrity conditions, which code combines into a pass or review queue.