fix: allow partial custom provider URLs#359
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kopy-kat
approved these changes
Feb 23, 2026
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Addresses user feedback: users should be able to provide custom URLs only for the chains they need, rather than being required to specify URLs for all chains in the sourceChains array.
Changes
getCustomUrlto returnundefinedinstead of throwing when a chain ID is not foundcreateTransportto fall back to default public provider when custom URL is not configuredBehavior
Before: If you specified
sourceChains: [chain1, chain2, chain3]but only provided custom URLs for chain1 and chain2, the SDK would throw an error when trying to use chain3.After: Chains without a custom URL configured will use the default public provider, allowing users to mix custom and default providers as needed.
This improves DX and reduces configuration overhead for users who only need custom providers for specific chains.