How can i use anvil accounts into the foundry tests? Like in hardhat node i can getNamedAccounts() but how can I use the anvil accounts into my forge Tests?

3 Answers 3


When you run the anvil command, you can use the exact same mnemonic (secret phrase) to generate the keys & addresses.

anvil -m 'test test test test test test test test test test test junk'

When you do this, every single time, you'll get:

(0) 0xf39Fd6e51aad88F6F4ce6aB8827279cffFb92266 (10000.000000000000000000 ETH)
(1) 0x70997970C51812dc3A010C7d01b50e0d17dc79C8 (10000.000000000000000000 ETH)
(2) 0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC (10000.000000000000000000 ETH)
(3) 0x90F79bf6EB2c4f870365E785982E1f101E93b906 (10000.000000000000000000 ETH)
(4) 0x15d34AAf54267DB7D7c367839AAf71A00a2C6A65 (10000.000000000000000000 ETH)
(5) 0x9965507D1a55bcC2695C58ba16FB37d819B0A4dc (10000.000000000000000000 ETH)
(6) 0x976EA74026E726554dB657fA54763abd0C3a0aa9 (10000.000000000000000000 ETH)
(7) 0x14dC79964da2C08b23698B3D3cc7Ca32193d9955 (10000.000000000000000000 ETH)
(8) 0x23618e81E3f5cdF7f54C3d65f7FBc0aBf5B21E8f (10000.000000000000000000 ETH)
(9) 0xa0Ee7A142d267C1f36714E4a8F75612F20a79720 (10000.000000000000000000 ETH)

Private Keys

(0) 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
(1) 0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78690d
(2) 0x5de4111afa1a4b94908f83103eb1f1706367c2e68ca870fc3fb9a804cdab365a
(3) 0x7c852118294e51e653712a81e05800f419141751be58f605c371e15141b007a6
(4) 0x47e179ec197488593b187f80a00eb0da91f1b9d0b13f8733639f19c30a34926a
(5) 0x8b3a350cf5c34c9194ca85829a2df0ec3153be0318b5e2d3348e872092edffba
(6) 0x92db14e403b83dfe3df233f83dfa3a0d7096f21ca9b0d6d6b8d88b2b4ec1564e
(7) 0x4bbbf85ce3377467afe5d46f804f221813b2bb87f24d81f60f1fcdbf7cbf4356
(8) 0xdbda1821b80551c9d65939329250298aa3472ba22feea921c0cf5d620ea67b97
(9) 0x2a871d0798f97d79848a013d4936a73bf4cc922c825d33c1cf7073dff6d409c6

Unlike hardhat, you don't have an accounts object you can use to cycle between these, but foundry has more clever ways to change accounts.

You can use:


to impersonate another account during tests.


When you run the anvil command you get some mock accounts with a constant set of addresses and private keys, you can use that directly from your forge tests.

You could create a helper contract / just an array with the list of addresses to interact from them.


I'm a little unsure on this one, although I just made a quick search in the Foundry documentation and on the World Wide Web in general, which I believe you've also tried yourself before asking. So:

To my knowledge there's no such functionality in Foundry. There are, however, a lot of ways to make use of accounts in tests using Anvil. The most obvious is to copy-paste the private keys used in Anvil and make use of them in your tests in any way you want.

Hope this will give some clarification on your issue. :)

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