Multisig InspectorMultisig Inspector
A free, read-only security toolkit for reviewing Safe multisig configuration and transactions before signing.
Multisig Inspector helps teams answer two questions that contract audits alone cannot answer:
- Is this Safe configured as intended, and has its configuration changed?
- What will this transaction do, and is the hash on the signing device the one that was independently reviewed?
The toolkit is designed to be used without connecting a wallet. It never requests private keys, creates signatures, or submits transactions.
Two tools, two human checks
| Tool | What it does | What only you can do |
|---|---|---|
| Safe Inspector | Reads owners, threshold, modules, guard, fallback handler, implementation, version, and nonce directly from the selected network. It reports risks and configuration drift. | Confirm that every owner and configuration choice belongs there. |
| Transaction Inspector | Decodes a transaction, recomputes its Safe transaction hashes, checks known threat data, and optionally simulates it. | Confirm the decoded intent and compare the recomputed hash with the signing screen. |
The last security step is human
The tool can produce an independent expectation, but it cannot see a hardware wallet or signing interface. Before signing, compare the displayed hash character by character.
Why this exists
Safe smart contracts are extensively audited. Many real losses happen in the operational gap between creating a transaction and a signer approving it: a misleading interface, an altered payload, an unexpected owner, a lowered threshold, or a newly enabled module.
Multisig Inspector focuses on that gap. It exposes the configuration and transaction data that a human reviewer needs before approving anything.
Start here
Run your first review
The shortest path through both inspectors.
Review a Safe
Understand configuration, findings, owner review, and drift.
Review a transaction
Choose an import path, decode actions, and verify hashes.
Understand the trust model
See exactly what stays local and what can leave the browser.
Scope
Multisig Inspector reviews current Safe configuration and individual transactions. It does not replace a full security audit of transaction history, signer operations, governance, or key-management practices. For broader assurance, use the full audit link inside the product.