Break it before reality does.
Crucible turns three adversarial AI agents loose on your most dangerous documents — incident runbooks, security policies, clinical order sets — then seals every step in a tamper-evident record.
Most tools flag problems and stop. Crucible fixes them — and proves it.
Three agents. One hardened document.
Each plays a role most review tools skip — and together they don't just judge your document, they repair it until it holds.
Attacks it.
Reads your document like an attacker would, hunting for the failure that ends up in a postmortem.
- Finds unsafe steps and failure modes
- Rates each finding Critical / High / Medium
- Re-attacks every revision until nothing's left
Fixes it.
Doesn't just point at problems — rewrites the document into a hardened version that closes them.
- Turns flaws into safe, specific steps
- Adds the missing safeguards and checks
- Hands back a deployable document, not a report
Decides.
Scores the result and rules on it: ship it, run another round, or escalate to a human.
- Scores every round 0–100
- Forces another round until it's safe
- Escalates high-stakes calls to a person
You hold the final call.
A human always holds the final call. On high-stakes documents, Crucible escalates to a person to approve, reject, or add context — and that decision is sealed into the record too.
Most review tools stop at Find.
They surface problems and hand them back to you. Crucible fixes them — and seals the proof.
Spots flaws and produces a report
Hands it back — you fix it manually
No record of what changed, or when
Red attacks the document for flaws — round after round
Blue rewrites it into a hardened, deployable version
Every step sealed in a tamper-evident chain you can verify
From flawed draft to sealed proof.
A fully traceable adversarial process, with a human in the loop and an un-fakeable record at the end.
Submit
Paste or upload your document — or load a demo to see it run.
~ instantRed attacks
Finds every flaw and rates it by severity, round after round.
~ secondsBlue hardens
Rewrites the document into a safer version that closes the gaps.
~ secondsArbiter judges
Scores it and sends it back for another round until it holds.
~ secondsHuman signs off
A person approves, rejects, or adds context on high-stakes calls.
human-in-the-loopSealed
Every step locked into a tamper-evident chain you can verify.
~ instantProof you can break.
Every attack, fix, score, and sign-off is sealed into a hash chain. Change one character of the record and verification fails instantly — restore it, and it passes again.
Under the hood.
The agents run on Band, powered by Featherless. The Arena is a Next.js app with Supabase, deployed on Vercel — and every step is sealed with a SHA-256 hash chain.
Next.js
React
TypeScript
Tailwind CSS
Vercel
Supabase
PythonHarden your first document.
Load the demo and watch Red, Blue, and Arbiter go to work — then verify the sealed record yourself.