Prove your contracts.
Zero specs required.
AI infers invariants. Kontrol proves them. You get a findings report.
1 hosted run · No credit card
Live preview
Your verification command center
Terminal output and dashboard in one view — exactly what you get after a run.
Verification log
Dashboard
SimpleToken verification
demo/ · completed · hosted LLM
Free trial runs
3 / 3
Hosted AI
Verifications
1
1 completed
Kontrol prover
Online
KEVM proofs
Findings
0
All clear
No findings
All 6 invariants passed — report ready to download.
Invariants & findings
| Invariant | Severity | Status |
|---|---|---|
| totalSupplyNonNegative | critical | ✓ proven |
| balanceConservation | critical | ✓ proven |
| allowanceIntegrity | high | ✓ proven |
| noUnauthorizedMint | critical | ✓ proven |
Built on industry-standard verification stack
Why Cyrus
Security verification that ships with your workflow
From DeFi protocols to NFT contracts — get formal assurance without hiring a verification team first.
Zero manual specs
Cyrus reads your Solidity, NatSpec, and Foundry tests — then proposes invariants automatically.
Mathematical proofs
Kontrol symbolically executes via KEVM. A pass means proven for all reachable states, not a guess.
Findings report
Markdown and JSON output with proven invariants, failures, counterexamples, and suggested fixes.
Free trial included
Hosted AI inference on us for your first runs. Bring your own key when you scale.
Full Kontrol control
Tune proof depth, max invariants, booster, and CEGAR iterations on every run.
GitHub or zip upload
Drop a Foundry archive or connect a repo. Private repos supported with a token.
How it works
Four steps to a findings report
Upload
Foundry zip or GitHub repo with foundry.toml
Infer
AI proposes invariants from your code and tests
Prove
Kontrol/KEVM runs formal symbolic execution
Report
Findings with proofs, failures, and counterexamples
Pricing
Start free, scale on your terms
One hosted verification included. Bring your own API key when you need more.
Free trial
$0
1 hosted run
- • Hosted DeepSeek / Claude inference
- • Full Kontrol formal proofs
- • Markdown + JSON findings report
- • Zip upload or public GitHub
Bring your own key
Pay provider
unlimited runs
- • Use your DeepSeek or Anthropic key
- • Key sent per job — never stored
- • Same verification pipeline
- • Private GitHub repos supported
Team / enterprise
Contact
custom volume
- • Dedicated hosted inference
- • SSO & audit logs
- • On-prem or VPC deployment
- • Priority support
Shred Security
Ship contracts with proof, not hope
Cyrus is built by Shred Security to bring formal verification to every Solidity team — start free, scale with your own keys.