Prahari Labs · प्रहरी — the one who keeps watch
Instruments of watchfulness, built in India — engines that compute the sky without guessing, systems that guard attention without stealing it, sentinels that keep data honest, vaults that carry what you leave behind, and a mesh that carries a cry for help when every tower is gone.
A note from the watchtower
Every age builds its own watchtowers. Ours are made of software. We build engines that compute the sky without guessing, systems that return stolen hours to their keeper, sentinels that hold data to its word, vaults that carry what you leave to the ones you love, and a mesh that carries a cry for help when the towers are gone. We measure. We do not surveil.
The instruments · यंत्र
The ancients divided the day into eight praharas and posted a watchkeeper for each. We post ours across five territories — the sky above you, the attention within you, the data entrusted to you, the legacy you leave behind, and the signal that has to get out when everything else has failed.
Instrument I — the sky · ज्योतिः
The sky, computed. The meaning, considered.
A dual-system astrology engine that treats the heavens as a matter of record. Vedic and Western charts flow from one deterministic ephemeris core — the AI interprets, but it is never permitted to calculate. Every degree is mathematics. Every reading is grounded in the classical canon.
Sidereal and tropical charts reconciled from a single ephemeris, computed to the arc-second — never estimated, never hallucinated.
Language models read from a public-domain classical corpus and speak only to what the chart already says. The math is off-limits to them, by architecture.
Jyotir reflects; it does not direct. No financial, medical, or legal instructions — ever, under any prompt.
Instrument II — the self · विराम
An operating system for the spaces between.
Your devices are engineered to interrupt. PauseOS is engineered to end that — a calm layer that schedules silence with the same authority your calendar schedules meetings, and returns the day's praharas to their rightful keeper: you.
Deep-focus watches that hold every notification at the gate until you ask for them — no exceptions, no "priority" loopholes.
See where your attention actually went — measured in praharas, rendered without judgment. Awareness first; guilt was never the product.
Your patterns of attention never leave your hardware. There is no cloud profile of your mind, so there is nothing to leak.
Instrument III — the data · रक्षक
Compliance that never sleeps.
India's Digital Personal Data Protection Act rewrote the duty of care for anyone who holds personal data. Sentinel stands the watch — mapping every data flow, keeping every consent honest, and rehearsing the breach you hope never comes.
Continuous discovery of where personal data enters, moves, and rests across your stack — a map that redraws itself as your systems change.
A tamper-evident ledger of every consent granted, altered, and withdrawn — audit-ready at any hour, in the Board's own vocabulary.
Notification drills, evidence trails, and response runbooks — practised in peacetime, so the worst day of the year runs like a fire drill.
Instrument IV — the after · दाय
The watch that outlasts the watchman.
Over ₹78,000 crore sits unclaimed with Indian banks and insurers — not contested, simply never found. Digital Legacy is a zero-knowledge vault for everything you own and everything you owe, sealed while you live and released to the people you choose through a staged dead man's switch when you no longer can.
Every entry is encrypted on your device before it reaches us. We keep the ciphertext and stand the watch; the keys belong to you and the people you name.
Missed check-ins escalate gently — you first, then trusted contacts, then certificate verification, then a 72-hour veto. No single person can open the door.
On release, every institution comes with its own checklist — documents, pre-filled forms, timelines — and liabilities disclosed beside assets, so nothing surfaces later as a surprise.
Instrument V — the signal · सेतु
When the towers fall, the phones remain.
A disaster takes the roads, and then it takes the network. MeshLine hands the phones back to each other — hopping an emergency message directly from one device to the next over Bluetooth, with no tower, no internet, no SIM, no server, and no account. Every packet is verified before it is read; every private word is encrypted end to end, including the ones your phone carries for a stranger.
Your device carries other people's packets to extend the reach of the mesh — signature checked first, duplicates dropped, hop count decremented, ciphertext it cannot read passed on.
If the secure core is unavailable or no session exists, MeshLine refuses to send and says so. A messenger that silently downgrades is more dangerous than one that fails loudly.
Bluetooth range, eight hops, best-effort delivery, and a public SOS that anyone nearby can read — stated in the app itself, because these are the assumptions someone would otherwise make mid-emergency.
The measure of the watch
degrees of sky left to guesswork. The ephemeris computes; nothing estimates.
minutes of attention defended, every single day, on your hardware alone.
nights a year the Sentinel stands its post. Audits do not schedule appointments.
hours of final veto before any vault opens. The living always speak last.
hops a distress call can travel with no tower, no internet, and no server behind it.
The Prahari code · आचार
सत्य · truth
Anything with a true answer is computed deterministically. Models interpret; they do not measure. This is enforced in the architecture, where a prompt cannot undo it.
दृष्टि · sight
We build instruments that observe on your behalf — never products that observe you. If a feature needs your data to leave your device, we redesign the feature.
दान · what is given
Public-domain sources. Consented data. On-device processing. Every corpus we train on and every byte we touch could be read aloud to the person it came from.
मर्यादा · the boundary
Our software knows the edge of its authority and stops there. No financial, medical, or legal directives — a refusal we consider a feature, not a limitation.
प्रहरी · the watch continues
We are a small studio with long instruments. If you build carefully, measure honestly, and believe software should know its own boundaries, we would like to hear from you.