A Policy Engine for Safe Users

Secure your whole organization from one place. DeFi Armor, is the first insured co-signer that protects all of your on-chain assets, without requiring you to change your custody or compromise on flexibility. Built on Safe.

The Problem

You are Most Likely at Risk.

The leading custodians do not properly check DeFi transactions, despite advertising "enterprise grade security for DeFi."

Consequently, asset managers relying on these solutions, and their investors, are at risk of losing all their assets.

Read our analysis on transaction security providers for DeFi.
The Solution

The First Co-Signer for DeFi

DeFi Armor is the first co-signer that actually protects your on-chain assets, without requiring you to change your custody.
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The First Secure Access Management Solution for Web3

DeFi Armor protects your assets while maximizing your independence and flexibility on-chain. Custody your assets in the way that serves you best, knowing that you and your investors are safe.

DeFi SMA Pro Toolkit

Offer your clients properly built SMAs, without the operational headache of manually signing every transaction. Keep your signing solution the way it is.

Automatic, 24/7 Protection

We operate a co-signer that performs a deep simulation on every transaction and classifies the state change. Both our co-signer and your custody signatures are required for the transaction to pass.

Audited, Pentested, and Secured by Safe:


Discover how Crypto natives are using DeFi Armor.

"DeFi Armor helps us protect our investor's assets."

Edge Capital Management is an alternative investment manager focused on digital assets, blockchain and decentralized finance (DeFi) markets.

  • Edge has a growing team of traders and engineers building active on-chain strategies. DeFi Armor protects Edge's on-chain assets from phishing attacks, smart contract execution risks, and unexpected tail risk inherent in running a DeFi hedge fund.
  • Edge relies on custodial solutions for private key management and on DeFi Armor for pre-trade transaction verifications which improves security for our investors.

- Vadim Khramov

"DeFi Armor is a signal to us that the fund takes on-chain security seriously."

Scenius Capital is a multi-manager focused crypto investment firm allocating to both actively managed hedge funds and venture capital funds.

  • DeFi Armor gives them peace of mind that a major tail risk across their portfolio, namely a fund becoming a victim of preventable fraud or an external hack, is largely mitigated.
  • Scenius has found both hedge funds and venture funds need robust systems to manage liquid tokens. DeFi Armor is a core component of a robust system for managing tokens on-chain.

- Ben Jacobs & Greg d’Incelli

“Every time I touch my ETH, my biggest fear is it getting in the wrong hands”

Andrew Keys is the founder of DARMA Capital. He self-custodies a meaningful amount of ETH.

  • DeFi Armor gives Andrew an extra layer of protection on his ETH. He's protected in the event his private key is compromised or simply enters the wrong address.
  • On-boarding took 5 minutes  and he didn't have to change anything about his key management setup.
  • Andrew can now delegate the management of a wallet to an employee or assistant without having to worry about the security of his assets.

Andrew Keys

"My biggest fear as the Director of Fund Operations is approving a transaction that looks benign when in fact it’s not."

Delphi Ventures is a thesis-driven, high-conviction venture and institutional research firm that allocates across core themes in digital assets.

  • As a venture fund, Delphi does not actively trade. Nonetheless, when they do transact on-chain, there is no room for error. DeFi Armor eliminated the tail risk inherent in relying exclusively on humans to decipher the behavior of a transaction.
  • Delphi values self custody. DeFi Armor's "portable policy engine" supplemented their self custody with an additional layer of security.

- Drew Henderson

"DeFi Armor's co-signer security model met our standards for transaction security."

Founded in 2017, Spartan Group is a leader in venture investing, trading, and M&A advisory in the Web3 space. They were the highest performing hedge fund in APAC in 2021, with a current AUM $500M, and an additional $1Bn+ in deal arrangement.

  • Spartan has an exceptionally high bar for trade security. They independently reviewed DeFi Armor's security model as a co-signer and concluded it met their standards.
  • DeFi Armor added no additional friction to Spartan's trading operations as it is fully automated.
  • Using DeFi Armor now means their policy engine is modular, giving them full flexibility to chose the set of custodians and key management service providers that suite them best.

- Kelvin Koh

"DeFi Armor enabled us to confidently start trading on-chain.


  • Arb strategies, can now do DeFi.
  • On centralized exchanges, there's very clear separation of trading and operations. It's paramount we enforce this separation of responsibilities in DeFi.
  • Was easy. Historically security and ease has kept us out of the on-chain market.


We're on all major EVM networks.
Adding Cosmos next.

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Frequently asked questions

What is a co-signer?

A co-signer is an additional "approver" or signature. It is totally separate from all of your other keys. We operate a co-signer and we do not touch any of your keys.

The co-signer has the power to reject certain transactions. It does not have the power to"originate" transactions, meaning it cannot send a transaction to your custodian for approval. And it does not have the power to sign transactions on your behalf, that's what your custodian does.

What is the difference between trading and operation keys?

Trading keys are used to perform transactions. They're what you use to sign every day things. People often associate this function with "hot wallets." In our system, instead of separating assets into "hot and cold wallets," you can think of it as 1 wallet with "hot and cold keys."

Operation keys are used to withdraw the assets and update the policies. You use these only periodically or in case of an emergency as these keys have full, unrestricted access given a multi-signature approval.

Most importantly, the operation keys are entirely disconnected from the co-signer. Transactions proposed by operation keys cannot be rejected by our system, which means you retain full custody of the assets. Often, clients keep those keys in one or several of their custodians.

What is the worst thing that could happen to me if your system is hacked?

The worst thing a hacker could do is perpetually reject all of your transactions. In this scenario, you would simply withdraw your assets from your DeFi Armor wallet using your operation keys into some other wallet you own.

How do I sign up?

You call us. Every client speaks to at least 1 founder. Once we know who you are, the sign-up and on-boarding is streamlined.

Can you see my trades?

In almost all cases, we host the co-signer, which means as a firm we have technical access to that database. In select cases, our clients can host it entirely themselves, such that we don't have any access; this requires preparation.

In all cases, our Terms of Service state we cannot use or disclose any client specific information, which is the same guarantee given by almost all comparable service providers.

What if I want to add a new network or protocol?

We can add any EVM network with a 12 hour turn around. DeFi Armor is protocol agnostic, so you can already use it with almost any protocol. For the edge cases where it doesn't work out of the box, our turn around time is typically ~24 hours.