anvil
A fast local Ethereum development node
$ anvil --help
Usage: anvil [OPTIONS] [COMMAND]
Commands:
completions Generate shell completions script [aliases: com]
generate-fig-spec Generate Fig autocompletion spec [aliases: fig]
help Print this message or the help of the given subcommand(s)
Options:
-a, --accounts <NUM>
Number of dev accounts to generate and configure
[default: 10]
-b, --block-time <SECONDS>
Block time in seconds for interval mining
[aliases: blockTime]
--balance <NUM>
The balance of every dev account in Ether
[default: 10000]
--config-out <OUT_FILE>
Writes output of `anvil` as json to user-specified file
--derivation-path <DERIVATION_PATH>
Sets the derivation path of the child key to be derived.
[default: m/44'/60'/0'/0/]
--dump-state <PATH>
Dump the state and block environment of chain on exit to the given
file.
If the value is a directory, the state will be written to
`<VALUE>/state.json`.
-h, --help
Print help (see a summary with '-h')
--hardfork <HARDFORK>
The EVM hardfork to use.
Choose the hardfork by name, e.g. `shanghai`, `paris`, `london`,
etc... [default: latest]
--init <PATH>
Initialize the genesis block with the given `genesis.json` file
--ipc [<PATH>]
Launch an ipc server at the given path or default path =
`/tmp/anvil.ipc`
[aliases: ipcpath]
--load-state <PATH>
Initialize the chain from a previously saved state snapshot
-m, --mnemonic <MNEMONIC>
BIP39 mnemonic phrase used for generating accounts. Cannot be used if
`mnemonic_random` or `mnemonic_seed` are used
--max-persisted-states <MAX_PERSISTED_STATES>
Max number of states to persist on disk.
Note that `prune_history` will overwrite `max_persisted_states` to 0.
--mixed-mining
[aliases: mixed-mining]
--mnemonic-random [<MNEMONIC_RANDOM>]
Automatically generates a BIP39 mnemonic phrase, and derives accounts
from it. Cannot be used with other `mnemonic` options. You can specify
the number of words you want in the mnemonic. [default: 12]
--mnemonic-seed-unsafe <MNEMONIC_SEED>
Generates a BIP39 mnemonic phrase from a given seed Cannot be used
with other `mnemonic` options.
CAREFUL: This is NOT SAFE and should only be used for testing. Never
use the private keys generated in production.
--no-mining
Disable auto and interval mining, and mine on demand instead
[aliases: no-mine]
--order <ORDER>
How transactions are sorted in the mempool
[default: fees]
-p, --port <NUM>
Port number to listen on
[default: 8545]
--preserve-historical-states
Preserve historical state snapshots when dumping the state.
This will save the in-memory states of the chain at particular block
hashes.
These historical states will be loaded into the memory when
`--load-state` / `--state`, and aids in RPC calls beyond the block at
which state was dumped.
--prune-history [<PRUNE_HISTORY>]
Don't keep full chain history. If a number argument is specified, at
most this number of states is kept in memory.
If enabled, no state will be persisted on disk, so
`max_persisted_states` will be 0.
-s, --state-interval <SECONDS>
Interval in seconds at which the state and block environment is to be
dumped to disk.
See --state and --dump-state
--slots-in-an-epoch <SLOTS_IN_AN_EPOCH>
Slots in an epoch
[default: 32]
--state <PATH>
This is an alias for both --load-state and --dump-state.
It initializes the chain with the state and block environment stored
at the file, if it exists, and dumps the chain's state on exit.
--timestamp <NUM>
The timestamp of the genesis block
--transaction-block-keeper <TRANSACTION_BLOCK_KEEPER>
Number of blocks with transactions to keep in memory
-V, --version
Print version
Server options:
--allow-origin <ALLOW_ORIGIN>
The cors `allow_origin` header
[default: *]
--host <IP_ADDR>
The hosts the server will listen on
[env: ANVIL_IP_ADDR=]
[default: 127.0.0.1]
--no-cors
Disable CORS
--no-request-size-limit
Disable the default request body size limit. At time of writing the
default limit is 2MB
Fork config:
--compute-units-per-second <CUPS>
Sets the number of assumed available compute units per second for this
provider
default value: 330
See also --fork-url and
<https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second>
-f, --fork-url <URL>
Fetch state over a remote endpoint instead of starting from an empty
state.
If you want to fetch state from a specific block number, add a block
number like `http://localhost:8545@1400000` or use the
`--fork-block-number` argument.
[aliases: rpc-url]
--fork-block-number <BLOCK>
Fetch state from a specific block number over a remote endpoint.
See --fork-url.
--fork-chain-id <CHAIN>
Specify chain id to skip fetching it from remote endpoint. This
enables offline-start mode.
You still must pass both `--fork-url` and `--fork-block-number`, and
already have your required state cached on disk, anything missing
locally would be fetched from the remote.
--fork-header <HEADERS>
Headers to use for the rpc client, e.g. "User-Agent: test-agent"
See --fork-url.
--fork-retry-backoff <BACKOFF>
Initial retry backoff on encountering errors.
See --fork-url.
--fork-transaction-hash <TRANSACTION>
Fetch state from a specific transaction hash over a remote endpoint.
See --fork-url.
--no-rate-limit
Disables rate limiting for this node's provider.
default value: false
See also --fork-url and
<https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second>
[aliases: no-rpc-rate-limit]
--no-storage-caching
Explicitly disables the use of RPC caching.
All storage slots are read entirely from the endpoint.
This flag overrides the project's configuration file.
See --fork-url.
--retries <retries>
Number of retry requests for spurious networks (timed out requests)
Default value 5
--timeout <timeout>
Timeout in ms for requests sent to remote JSON-RPC server in forking
mode.
Default value 45000
Environment config:
--block-base-fee-per-gas <FEE>
The base fee in a block
[aliases: base-fee]
--chain-id <CHAIN_ID>
The chain ID
--code-size-limit <CODE_SIZE>
EIP-170: Contract code size limit in bytes. Useful to increase this
because of tests. To disable entirely, use
`--disable-code-size-limit`. By default, it is 0x6000 (~25kb)
--disable-block-gas-limit
Disable the `call.gas_limit <= block.gas_limit` constraint
--disable-code-size-limit
Disable EIP-170: Contract code size limit
--disable-min-priority-fee
Disable the enforcement of a minimum suggested priority fee
[aliases: no-priority-fee]
--gas-limit <GAS_LIMIT>
The block gas limit
--gas-price <GAS_PRICE>
The gas price
EVM options:
--alphanet
Enable Alphanet features
[aliases: odyssey]
--auto-impersonate
Enables automatic impersonation on startup. This allows any
transaction sender to be simulated as different accounts, which is
useful for testing contract behavior
[aliases: auto-unlock]
--disable-console-log
Disable printing of `console.log` invocations to stdout
[aliases: no-console-log]
--disable-default-create2-deployer
Disable the default create2 deployer
[aliases: no-create2]
--memory-limit <MEMORY_LIMIT>
The memory limit per EVM execution in bytes
--optimism
Run an Optimism chain
[aliases: optimism]
--steps-tracing
Enable steps tracing used for debug calls returning geth-style traces
[aliases: tracing]
Display options:
--color <COLOR>
The color of the log messages
Possible values:
- auto: Intelligently guess whether to use color output (default)
- always: Force color output
- never: Force disable color output
--json
Format log messages as JSON
-q, --quiet
Do not print log messages
-v, --verbosity...
Verbosity level of the log messages.
Pass multiple times to increase the verbosity (e.g. -v, -vv, -vvv).
Depending on the context the verbosity levels have different meanings.
For example, the verbosity levels of the EVM are:
- 2 (-vv): Print logs for all tests.
- 3 (-vvv): Print execution traces for failing tests.
- 4 (-vvvv): Print execution traces for all tests, and setup traces
for failing tests.
- 5 (-vvvvv): Print execution and setup traces for all tests.