Deterministic enforcement · Ed25519-sealed receipts

It won't let your AI skip the step that matters.

AgenticRail is a deterministic gate that blocks an AI agent from acting out of order — before the action runs, not after. Every decision it's allowed to make is sealed into a signed receipt anyone can verify offline, with no callback to us. It doesn't make the AI right. It makes the order unskippable, and the record impossible to quietly change.

The gap

The harm that leaves no trace

Almost everywhere AI now makes or drafts a decision, a human is meant to check it — and almost nowhere is there proof the check happened. The safeguard is real; the record of it is missing. That silence, not the AI's mistakes, is the dangerous part: when something goes wrong, there is nothing to point to.

What it does

Two powers, at the one boundary you can't avoid — the moment before an AI acts.

agent  →  gate  →  ALLOW / DENY  →  sealed receipt

The proof — verify it yourself

Don't take our word for it. Every receipt is signed with Ed25519 and verifiable offline against a public key we publish — no callback to AgenticRail. Re-hash the record and check the signature in your own code, or paste a sequence ID into the report tool.

No sequence ID yet? Make one in two commands. The docs carry a copy-paste request that runs against the live gate on the public demo key — nothing to install, no sign-up. It returns a sequence ID; one more call returns that sequence's receipt with its Ed25519 signature and the exact preimage to check it against. If you would rather not open a terminal, the browser demo drives the same gate.

Signed receipt · illustrative shape
decisionALLOW
stepreview_and_sign
payload_hashsha256 of the exact record
signature_algEd25519
key_idk2_2026-06-07_ed25519
signaturebase64 — verify offline or at /report
sealedtrue

This one is illustrative. Generate a real one from the docs, or in the browser

The AI wrote the note. What proves the doctor checked it?

AI scribes now draft clinical notes, and a clinician is required to review each one before it is saved — but nothing proves the review happened. This is where AgenticRail fits. Placed at the sign-off, it seals a receipt — bound to a fingerprint of the exact note — recording that this report was reviewed and signed by this clinician, at this time, and cannot be altered afterward without breaking the seal.

It can't force a careful read, and it doesn't claim to. What it ends is "the AI did it" as an answer — and it protects the clinician who did review, by making that review provable.

What it is — and isn't

It isIt is not
Deterministic enforcement — the verdict is computed, not an AI's guessA lie-detector for the AI. It proves what was done, not that the AI was right
A tamper-evident, offline-verifiable recordA stop on hallucination, or a force on human attention
Metadata and hashes only — no clinical content inside a receiptA claim on your data or your governance — it is a bounded instrument. We hold the receipt signing keys today, and who holds them is a deployment term

Where it comes from

AgenticRail was derived from whakairo — the carver's discipline, where order is law and the finished form is sealed. That lineage is the reason for the seal, not decoration on it. The whakapapa →

Published briefs & specifications

Written to be cited, fingerprinted to be checked. Each carries a SHA-256 fingerprint you can recompute yourself.

Automated Decisions and the Provable Safeguard — three tiers of safeguard (asserted, enforced, provable), why the difference decided Robodebt, and a five-minute test anyone can run.
AI in NZ Health Care: The Missing Evidence Layer — sector gap analysis: national AI-scribe rollout, the human-review safeguard, and the record that doesn't yet exist.
AI in NZ Education Assessment: The Missing Evidence Layer — sector gap analysis: NCEA authenticity, moderation, and the self-attested evidence chain.
When the Marker Is a Machine — an agreement rate is a property of a system; a challenge is about an instance. What evidence supports one AI-assisted result.
If AI Detectors Don't Work, What Does? — prohibit, detect, or record the process. Why the first two both interrogate the artifact, and what the third one changes.
NCEA Is Being Replaced. What Assures the Internal Assessment? — under NZCE and NZACE internal assessment becomes universal, and its moderation is still unspecified.
The Completeness Specification — eight requirements (R1–R8) that separate an evidence-grade enforcement record from an ordinary log.
The Enforcement Specification — the canonical spec: decision architecture, receipt fields, signing, and the sealed chain. Versioned and frozen.
Writing — technical posts, each re-checked claim-by-claim against the current system before republication.

Verify a receipt, or start a conversation.

What it is  ·  Run the live demo  ·  Verify a sequence  ·  Questions  ·  hello@agenticrail.nz

Hokianga Harbour Heads at sunset, looking west through harakeke toward the open Tasman — Northland, Aotearoa New Zealand
Hokianga Harbour Heads, Northland, Aotearoa — where AgenticRail is built

He toi whakairo, he mana tangata