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fix: use CORS-friendly public RPCs as fallbacks when no PUBLIC_RPC_* env vars are set #445

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Merged
gabitoesmiapodo merged 6 commits into from
Apr 7, 2026
Merged

fix: use CORS-friendly public RPCs as fallbacks when no PUBLIC_RPC_* env vars are set #445

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8044665
fix: use CORS-friendly public RPCs as fallbacks when no PUBLIC_RPC_* …
gabitoesmiapodo Apr 6, 2026
7a0b481
docs: clarify which RPC vars get publicnode fallbacks in .env.example
gabitoesmiapodo Apr 6, 2026
3926e5f
docs: group RPC vars in .env.example by whether they have automatic f…
gabitoesmiapodo Apr 6, 2026
99dd367
docs: clarify unconfigured chains need to be added to networks.config…
gabitoesmiapodo Apr 6, 2026
03a4f4f
docs: clarify both RPC sections reference networks.config.ts
gabitoesmiapodo Apr 6, 2026
a579bd0
Merge branch 'develop' into fix/441
gabitoesmiapodo Apr 7, 2026
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16 changes: 10 additions & 6 deletions .env.example
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Original file line number Diff line number Diff line change
Expand Up @@ -24,19 +24,23 @@ PUBLIC_WALLETCONNECT_PROJECT_ID=''
# Native token address
PUBLIC_NATIVE_TOKEN_ADDRESS=0x0000000000000000000000000000000000000000

# RPCs. Complete if you want to use a different RPC from the one provided by wagmi.
# RPCs. Use these to override the default RPC for each chain.
#
# Configured in src/lib/networks.config.ts -- fall back to CORS-friendly publicnode.com RPCs when unset:
PUBLIC_RPC_MAINNET=
PUBLIC_RPC_ARBITRUM=
PUBLIC_RPC_OPTIMISM=
PUBLIC_RPC_OPTIMISM_SEPOLIA=
PUBLIC_RPC_POLYGON=
PUBLIC_RPC_SEPOLIA=
#
# Not configured by default -- add them to src/lib/networks.config.ts first, then set the RPC here:
PUBLIC_RPC_ARBITRUM_SEPOLIA=
PUBLIC_RPC_BASE=
PUBLIC_RPC_BASE_SEPOLIA=
PUBLIC_RPC_GNOSIS=
PUBLIC_RPC_GNOSIS_CHIADO=
PUBLIC_RPC_MAINNET=
PUBLIC_RPC_OPTIMISM=
PUBLIC_RPC_OPTIMISM_SEPOLIA=
PUBLIC_RPC_POLYGON=
PUBLIC_RPC_POLYGON_MUMBAI=
PUBLIC_RPC_SEPOLIA=

# Subgraph
###########################################################
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14 changes: 8 additions & 6 deletions src/lib/networks.config.ts
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Expand Up @@ -18,10 +18,12 @@ export type ChainsIds = (typeof chains)[number]['id']

type RestrictedTransports = Record<ChainsIds, Transport>
export const transports: RestrictedTransports = {
[mainnet.id]: http(env.PUBLIC_RPC_MAINNET),
[arbitrum.id]: http(env.PUBLIC_RPC_ARBITRUM),
[optimism.id]: http(env.PUBLIC_RPC_OPTIMISM),
[optimismSepolia.id]: http(env.PUBLIC_RPC_OPTIMISM_SEPOLIA),
[polygon.id]: http(env.PUBLIC_RPC_POLYGON),
[sepolia.id]: http(env.PUBLIC_RPC_SEPOLIA),
[mainnet.id]: http(env.PUBLIC_RPC_MAINNET || 'https://ethereum-rpc.publicnode.com'),
[arbitrum.id]: http(env.PUBLIC_RPC_ARBITRUM || 'https://arbitrum-one-rpc.publicnode.com'),
[optimism.id]: http(env.PUBLIC_RPC_OPTIMISM || 'https://optimism-rpc.publicnode.com'),
[optimismSepolia.id]: http(
env.PUBLIC_RPC_OPTIMISM_SEPOLIA || 'https://optimism-sepolia-rpc.publicnode.com',
),
[polygon.id]: http(env.PUBLIC_RPC_POLYGON || 'https://polygon-bor-rpc.publicnode.com'),
[sepolia.id]: http(env.PUBLIC_RPC_SEPOLIA || 'https://ethereum-sepolia-rpc.publicnode.com'),
}
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