feat(anvil): add eth_config rpc endpoint
#11591
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zerosnacks
requested review from
DaniPopes,
klkvr,
mattsse,
grandizzy,
yash-atreya,
onbjerg and
0xrusowsky
as code owners
grandizzy
reviewed
Sep 12, 2025
grandizzy
reviewed
Sep 12, 2025
mattsse
approved these changes
Sep 12, 2025
Comment on lines
+863
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+881
| if self.odyssey { | ||
| precompiles_map.insert( | ||
| PrecompileId::P256Verify.name().to_string(), | ||
| u64_to_address(P256VERIFY_ADDRESS), | ||
| ); | ||
| } | ||
|
|
||
| if self.is_celo() { | ||
| precompiles_map.insert( | ||
| celo_precompile::PRECOMPILE_ID_CELO_TRANSFER.clone().name().to_string(), | ||
| CELO_TRANSFER_ADDRESS, | ||
| ); | ||
| } | ||
|
|
||
| if let Some(factory) = &self.precompile_factory { | ||
| for (precompile, _) in &factory.precompiles() { | ||
| precompiles_map.insert(precompile.id().name().to_string(), *precompile.address()); | ||
| } | ||
| } |
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we need to do something about this, we have this in a few locations and maintaining this is a bit horrible
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Agreed, will have a look in a follow-up if we can have a shared helper for this to make this more maintainable as it currently is strictly tied to the EVM creation that we don't have access to in Anvil's backend
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Motivation
In order to make it easier to figure out the supported precompiles and system contracts as a user I think it makes sense to add an
eth_config-like RPC method: https://eips.ethereum.org/EIPS/eip-7910Closes: #11433
This completes the work required to make Foundry ready for Osaka.
Closes: #11428
Solution
Adds
eth_config-like endpoint inspired by the actualeth_configspecification with notable exceptions:Spec compliant:
nextandlastfields are alwaysnullas this node does not participate in any forking on the network.Not spec compliant:
The
fork_idis always0x00000000as this node does not participate in any forking on the network. For all intended purposes you can consider this unused by Anvil.Another thing that may be confusing to people is that we currently do not explicitly support all effects of system contracts yet, notably: #10357
Example output:
PR Checklist