Trinetra

Khata Lens: Say it. Check it. Prove it. THE PROBLEM Millions of small shopkeepers in India run on a paper khata: who owes what, who paid, what cash should be in the drawer. Entries get forgotten, handwriting is ambiguous, and when a customer says "maine toh de diye the" (I already paid), there is no proof. Typing-first, English-first apps don't fit how these shopkeepers actually work. [One line on your personal connection to this world.] WHAT IT IS Khata Lens is a voice-and-camera ledger agent. Shopkeepers speak in their natural Hindi-Marathi-English mix, or photograph a handwritten page or supplier bill. Agents draft the entries, plain code verifies them, the agent asks one tap-question when it is unsure, and the shopkeeper approves. Every saved entry links to the exact audio moment or image region it came from. HOW WE USE META'S MODELS Muse Voice Transcribe: turns code-mixed speech into text, the front door for people who won't type. Muse Spark: extracts several entries from one sentence (who, how much, credit or payment), reads handwriting from cropped rows, and drafts reminders in each customer's language. SAM 3.1: segments a photographed page into rows and line items, so each row is read separately and any error shows as a highlighted box on the original page. If any model call fails, manual entry still works. WHY IT IS TRUSTWORTHY: THE AI PROPOSES, CODE VERIFIES, YOU APPROVE - Arithmetic, duplicate, date and name-ambiguity checks are tested code, not model opinions. - Confidence is scored per field. Below the threshold, nothing is saved silently; the agent asks. - Append-only audit log: edits create new versions. - Tap any entry to replay the audio span or see the highlighted handwriting. - Nothing is ever sent to a customer automatically. AGENT WORKFLOWS Intake, Verifier, Collections (ranks overdue customers, drafts reminders, tracks promised dates), Evening Close (reconciles counted cash with the ledger and ranks likely causes) [add Supplier price watch or Dispute mode only if shipped]. BUILT THIS WEEK More than 50 commits between Oct 27 and Nov 4. FastAPI + Postgres backend, React PWA in English, Hindi and Marathi. Live: https://khata-lens-steel.vercel.app/ Repo: https://github.com/MohitProCode/KhataLens IMPACT Fewer disputes, less forgotten credit, a ledger in the shopkeeper's own language, and a daily cash picture they can trust, with the human always in control. Speak, verify, prove extends to tailors, wholesalers and any small business running on memory and paper. Track: Indie Developer / Build for Your World.