Health Agent · Proof, not promises
Your records never reach a server. See for yourself.
Most health apps ask you to upload everything and trust them with it. The free caregiver tools on this site work the opposite way: they run inside the page you already loaded, so what you type is never sent anywhere. And the audit trail behind Health Agent is sealed so that tampering shows. Don't take it on trust — check both yourself, below.
Claim 1 — and how to check it
The denial decoder, deadline checker, and records-request builder send nothing. There is no server behind them to send to.
Nothing leaves your device
Watch the network go quiet
Open your browser's developer tools and switch to the Network tab, then use any of the tools — decode a denial, check a deadline, or build a records request. You will see no request carrying what you typed, because the math and the letter are assembled by code already running in your browser. Close the tab and nothing is kept. That isn't a policy you have to trust — it's how the pages are built.
Claim 2 — and how to break it
A trail that can't be quietly changed
When Health Agent records an action, it seals it with a SHA-256 fingerprint and chains it to the record before it — the same hash-chain technique used across the Bonis family of products. Change a single character in any record and its fingerprint no longer matches. Below is a small, made-up sample (no real patient information). Edit any field, then press Verify and watch the seal break.
In plain terms
What is held, and what isn't
- The free tools on this site: nothing.No account, no upload, no storage. What you enter stays in your browser and is gone when you close the tab.
- The audit trail: sealed, not hidden.Records are fingerprinted and chained with SHA-256 so that any change is detectable — the technique you can break-test above.
- Proof you can check, not a promise to believe.The verification runs in your browser using the same math anyone can run; you don't have to trust a claim you can recompute.
Questions
Common questions
How can a tool work without sending my data anywhere?
Modern browsers can run the whole calculation locally. The denial decode, the deadline math, and the records letter are all assembled by code that loaded with the page, so there is no need to send your information to a server — and these pages don't.
What does "tamper-evident" actually mean?
Each record is run through SHA-256, a one-way fingerprint. The tiniest change to a record produces a completely different fingerprint, so an altered record no longer matches its stored seal. Because each record's seal also feeds the next, the change stands out. You can see it happen in the sample above.
Is the verifier real, or just for show?
It's real. Your browser recomputes the SHA-256 seals live using the Web Crypto API and compares them to the published ones. When it shows green, it's because the numbers genuinely matched; edit a field and they won't.
Is this medical or legal advice?
No. This page explains and demonstrates how the technology protects information. Health Agent is not affiliated with or endorsed by Medicare or HHS.