Decode the request
Translate unsigned wallet requests and contract interactions into clear, human-readable effects.
A product ventureTetraHelix Guard
Private alpha · working prototype
TETRAHELIXGUARD
Transaction safety, before signing
Understand the transaction. Before you sign.
TetraHelix Guard is a local-first transaction-intent firewall for crypto wallets. It decodes unsigned requests, compares their real effects with user intent, and warns about suspicious actions before signing.
StatusPrivate alpha
DeliveryBrowser extension
CoverageEVM + Solana pathways
BoundaryLocal-first · non-custodial
01 The product
A safer decision point between a site and a wallet.
Compare intent with effect
Check what the request will actually do against what the user believes they are approving.
Interrupt with clarity
Stop suspicious or sensitive requests for an explicit review before the wallet becomes the final signer.
02 Working proof
Interception tested on a live wallet connection flow.
During a live test on the Arbitrum Open House platform, Guard intercepted an eth_requestAccounts connection request before it reached the wallet. It surfaced the requesting origin and an exact request fingerprint, required explicit review, and then permitted one unchanged retry after authorization.
The wallet remained the final authority. The approval was single-use and expired automatically.
01Site requestConnection or unsigned action
→02Guard reviewDecode · compare · explain
→03WalletUser remains the signer
03 Trust model
Security software should have visible boundaries.
Guard is designed to reduce signing ambiguity without becoming another custodian, signer, or holder of wallet secrets.
- ✓No seed phrases or private keys
- ✓No custody or signing authority
- ✓No automatic transaction approval
- ✓Local analysis by default
04 Current work
From validated prototype to controlled pilot.
- NowExpand network-specific decoding and policy coverage.
- NextHarden browser packaging, tests, and review workflows.
- ThenRun controlled pilots and independent security review.
05 Reviewer resources