Feeling unsafe transacting on web3? You’re not alone.

Fire is a free extension that simulates web3 transactions, showing you exactly what will enter and exit your wallet before you sign the contract. All under control with your current wallet.
Supporting
ETH Token
ETH,
Polygon Token
Polygon, and
Optimism Token
Optimism on Chrome, Firefox, and Brave
Supporting
ETH Token
ETH,
Polygon Token
Polygon, and
Optimism Token
Optimism on Chrome, Firefox, and Brave

Trusted by the best

Protect your assets from being stolen

See exactly what will enter and exit your wallet before you sign.

Actually understand what you’re signing

With our UX, you can see in simple terms what a smart contract is actually doing.

How it works

It’s as easy as one, two, three.
1
Download the Fire extension.
2
The Fire extension catches signature requests from your browser, runs a simulation, and shows you the results.
3
If everything looks good, you sign the transaction using your wallet.
People love fire
 0xBen.nft 🖤💀🪦 615.x 🦇🔊
0xBen.nft 🖤💀🪦 615.x 🦇🔊
@_benxit_

Okay @_joinfire is awesome. Must-have for anyone using an ETH wallet.

AntheaEnabled
AntheaEnabled
@pootlingabout

Making transactions safer & helping us learn wtf is going on when if click that little sign button = Genius

RainbowFurby | DeGem
RainbowFurby | DeGem
@Rainbow_Furby

I Love this, makes code readable to uneducated plebs like me

0xBaba23
0xBaba23
@0xBaba23

This should help protect my fellow apes from getting their wallets drained

Chef Goose
Chef Goose
@0xChefGoose

As someone who is coding/dev illiterate, I always wonder what the hell I'm signing.

This looks like it could be a great step into making things more user-friendly.

See Fire in action with our free NFT minting experience

The Fire team

Jeff Krantz
Jeff
Krantz
Technical
Serial builder. Will try any dApp once. Bitcoin class of 2012.
Josh Breite
Josh
Breite
Product
Ex-edtech founder. Kernel Block 7. web3 degen.
Rahul Patni
Rahul
Patni
Technical
Lines between work and play blurred.
Jordan Boesch
Jordan
Boesch
Technical
Ex-crypto founder. Building the future one line of code at a time.
Gabriel Federman
Gabriel
Federman
Growth
Interested in interesting things.

Join us

Full Stack Engineer

San Francisco, Miami or Remote
Full-time
View Role

Web3 Growth Lead

San Francisco, Miami or Remote
Full-time
View Role

Questions?

We’ve got all the answers right here.
Do I have to give Fire my secret phrase?

No, we will never ask for your secret phrase!

Do I need to give Fire my wallet address?

No, we track Ethereum transactions in your browser and will send a pop up with your wallet of choice.

Can I sign transactions in the Fire extension?

No, we do not have access to whether you can sign or reject a transaction. Thus, we are displaying transactions from your Web3 wallet.

How do we know of malicious contracts you are about to sign?

We simulate the transaction before you sign in your wallet, scanning to see if you are transferring your wallet contents and getting nothing in return or setting approvals that you shouldn’t be!

What wallets does Fire work with?

Any Ethereum wallet works with Fire!

How much does Fire cost?

Fire is completely free!