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*Generated from `cast erc4626 check --help`; see [CLI reference versions](/reference/versions). Regenerate this page instead of editing it directly.*

## cast erc4626 check

Probe synchronous ERC-4626 interface compatibility

Example:

```text
$ cast erc4626 check 0xBEEF01735c132Ada46AA9aA4c54623cAA92A64CB \
    --account 0x255c7705E8bb334dfCaE438197f7c4297988085A --block 25519075 \
    --rpc-url https://ethereum.reth.rs/rpc
```

Output:

```text
Vault                0xBEEF01735c132Ada46AA9aA4c54623cAA92A64CB
Account              0x255c7705e8BB334DfCae438197f7C4297988085a
Note: This probes read-call behavior only; it does not prove state-changing
selector coverage or semantic ERC-4626 compliance.
PASS contract code            contract bytecode is present
PASS asset()                  returned
0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
PASS asset contract           underlying asset bytecode is present
PASS asset balanceOf(address) call succeeded
PASS totalAssets()            call succeeded
PASS totalSupply()            call succeeded
PASS balanceOf(address)       call succeeded
PASS allowance(address,address) call succeeded
PASS convertToShares(0)       returned zero
PASS convertToAssets(0)       returned zero
PASS maxDeposit(address)      call succeeded
PASS previewDeposit(0)        returned zero
PASS maxMint(address)         call succeeded
PASS previewMint(0)           returned zero
PASS maxWithdraw(address)     call succeeded
PASS previewWithdraw(0)       returned zero
PASS maxRedeem(address)       call succeeded
PASS previewRedeem(0)         returned zero
PASS name()                   call succeeded
PASS symbol()                 call succeeded
PASS decimals()               call succeeded
Summary: 21 passed, 0 warnings, 0 failed
```

:::terminal
```bash
$ cast erc4626 check --help
```

```txt
Usage: cast erc4626 check [OPTIONS] <VAULT>

Arguments:
  <VAULT>
          The ERC-4626 vault contract address

Options:
      --account <ACCOUNT>
          The account used for limit and balance probes

  -B, --block <BLOCK>
          The block height to query at

  -h, --help
          Print help (see a summary with '-h')

  -j, --threads <THREADS>
          Number of threads to use. Specifying 0 defaults to the number of
          logical cores

          [alias: --jobs]

      --profile <PROFILE>
          The configuration profile to use

Rpc options:
  -r, --rpc-url <URL>
          The RPC endpoint

          [alias: --fork-url]

  -k, --insecure
          Allow insecure RPC connections (accept invalid HTTPS certificates).

          When the provider's inner runtime transport variant is HTTP, this
          configures the reqwest client to accept invalid certificates.

      --rpc-timeout <RPC_TIMEOUT>
          Timeout for the RPC request in seconds.

          The specified timeout will be used to override the default timeout for
          RPC requests.

          Default value: 45

          [env: ETH_RPC_TIMEOUT=]

      --no-proxy
          Disable automatic proxy detection.

          Use this in sandboxed environments (e.g., Cursor IDE sandbox, macOS
          App Sandbox) where system proxy detection causes crashes. When
          enabled, HTTP_PROXY/HTTPS_PROXY environment variables and system proxy
          settings will be ignored.

      --compute-units-per-second <CUPS>
          Sets the number of assumed available compute units per second for this
          provider.

          default value: 330

          See also
          [https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second](https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second)

      --no-rpc-rate-limit
          Disables rate limiting for this node's provider.

          See also
          [https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second](https://docs.alchemy.com/reference/compute-units#what-are-cups-compute-units-per-second)

          [alias: --no-rate-limit]

      --flashbots
          Use the Flashbots RPC URL with fast mode
          ([https://rpc.flashbots.net/fast](https://rpc.flashbots.net/fast)).

          This shares the transaction privately with all registered builders.

          See:
          [https://docs.flashbots.net/flashbots-protect/quick-start#faster-transactions](https://docs.flashbots.net/flashbots-protect/quick-start#faster-transactions)

      --jwt-secret <JWT_SECRET>
          JWT Secret for the RPC endpoint.

          The JWT secret will be used to create a JWT for an RPC. For example,
          the following can be used to simulate a CL `engine_forkchoiceUpdated`
          call:

          cast rpc --jwt-secret <JWT_SECRET> engine_forkchoiceUpdatedV2
          '["0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc",
          "0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc",
          "0x6bb38c26db65749ab6e472080a3d20a2f35776494e72016d1e339593f21c59bc"]'

          [env: ETH_RPC_JWT_SECRET=]

      --rpc-headers <RPC_HEADERS>
          Specify custom headers for RPC requests

          [env: ETH_RPC_HEADERS=]

      --curl
          Print the equivalent curl command instead of making the RPC request

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

      --md
          Format log messages as Markdown

  -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,
          including storage changes and
            backtraces with line numbers.
```
:::