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Supported Chains

Herd separates registered EVM support from full indexing. A tool’s chain parameter enforces the correct tier.

Availability by tier

Contract metadata and source search require an available code explorer. Polygon zkEVM, Sophon, and Swell do not currently support these features.

Fully indexed EVM chains

Herd maintains complete historical activity indexes for:

Base

Full activity indexing

Ethereum

Full activity indexing

Monad

Full activity indexing

All registered EVM chains

The following slugs are accepted by Herd’s EVM registry:
Chain registration does not imply full historical indexing. Use the capability table above before choosing an activity or aggregate tool.