Pre-release review
Code that ships under pressure
External audits are booked well ahead and cover one version. Changes made after the audit can go live without the same review.
Trust and Identity squad
Sienna Chain — Senior AI Smart Contract Security Lead
AI smart contract review before and after deployment
Sienna Chain — Senior AI Smart Contract Security LeadSienna Chain is an AI agent for firms that issue or rely on smart contracts. She reviews contract code before deployment, then watches live contracts for unusual activity and unauthorised upgrades. Findings reach your engineering and compliance teams with the evidence attached. People decide what ships and what gets paused.
Sienna Chain
Contract upgrade detected
IllustrativeFlagged for review
Change risk · high
Flag explained
“Proxy upgraded by a key outside the approved signer set.”
Job description
What Sienna Chain does Job description
Sienna Chain is a Senior AI Smart Contract Security Lead. She sits in your release process and beside your deployed contracts, reviews code before it ships and watches what happens after.
AI AGENT · TRUST AND IDENTITY SQUAD
SIENNA CHAIN
Senior AI Smart Contract Security Lead
REPORTS TO
Your CTO and Head of Compliance
WORKS WITH
Your code repositories, release pipeline and blockchain nodes
DEPLOYED
Shadow mode first, then the autonomy you set
KEY RESPONSIBILITIES
01Review smart contract code for known vulnerability patterns before each deployment
02Compare the deployed contract with the version your team approved
03Watch live contracts for unusual calls, fund movements and admin actions
04Flag upgrades or admin actions made outside your approved signer set and process
05Send findings to engineering and compliance with the code, transactions and evidence attached
AUTONOMY MODEL
LOWMEDIUMHIGH
Low risk
Can log routine activity with a reason, if you allow it
Medium risk
Goes to your team by default
High risk
Always goes to your team
You set the threshold per rule.
Kill switch: Turn Sienna off at any time
Options
How the options compare
| CRITERIA | External audit | Open-source scanners | Sienna Chain |
|---|---|---|---|
| Time to first results | Booked well ahead | Same day | Shadow mode on your next release |
| Who decides | Auditor reports, your team decides | Your engineers | Your team, with findings ranked by severity |
| Covers live contracts | No | No | Yes, including upgrades and admin actions |
| Compliance evidence | Audit report per version | Raw tool output | Linked record from review to deployment |
| Depth of review | Deep expert review | Pattern checks only | Pattern and change checks, with human review of findings |
| Where it's weaker | Covers one version at one point in time | Noisy, with no context or record | Doesn't replace a full expert audit for new or high-value contracts |
Works best with
AI agents that work best with Sienna Chain
Sienna's reviews count for more when other agents cover what happens around the contract.
TRUST AND IDENTITY
Cypher Knox
Lead AI Crypto Custody Architect
Screens the transfers that pass through Sienna's contracts and tracks the keys that sign them.
Meet CypherRISK AND GOVERNANCE
Devon Pulse
Lead AI DevSecOps Pipeline Architect
Scans the wider release pipeline and dependencies around each contract.
Meet DevonTRUST AND IDENTITY
Aria Linkwell
Senior AI API Security Specialist
Watches the APIs your apps use to call the contracts.
Meet Aria
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Questions? We Have Answers
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Frequently Asked Questions
Still have questions?
Talk to the people who build the agents. We'll answer per capability, yes or no.
It reviews contract code for known vulnerability patterns before release and checks that the deployed version matches what was approved. Sienna Chain also watches live contracts for unusual activity and unauthorised upgrades, and sends every finding to your team with evidence.
No. A full expert audit still matters for new or high-value contracts. Sienna covers the releases between audits, checks what's actually deployed and watches live contracts, which a point-in-time audit doesn't.
No. Sienna flags and recommends. Your team decides whether to pause, roll back or leave a contract running. A kill switch turns Sienna off without touching your contracts.
The contract enforces rules your customers rely on, so a change to it is a change to a regulated service. Regulators ask for change control and incident evidence for that technology as they would for any other.
Sienna reviews your next release and watches your live contracts, but nothing is paused or held. Your engineers and auditors keep working as they do today, and you compare her findings with theirs. You decide whether, and where, to switch on any autonomy afterwards.
Access to contract source code and your release pipeline, the list of approved signers and admin keys, and read access to the chains your contracts run on.
FluxForce runs as SaaS, on-premise or hybrid, built on Microsoft Azure. We agree data residency and which components run inside your environment during deployment design, before any data moves.