fix: verify SCA signatures on signed chain#32
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Configure default public RPCs for Tempo Mainnet (4217) and Arc Testnet (5042002) via Alchemy free-tier endpoints, and pre-wire Arc Mainnet (5042) to its public RPC ahead of launch so relying parties don't need a config update when it goes live. These are treated as rate-limited public endpoints, not secrets. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
RUSTSEC-2026-0173 flags proc-macro-error2 as unmaintained. It is a build-time-only transitive dependency via alloy-sol-macro, so add it to the existing advisories ignore list alongside the other unmaintained crates. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Takaros999
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Jun 18, 2026
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Summary
SCA verification now follows the EVM chain in the signed AgentKit payload. A Base smart-account signature can be verified against Base, then the same address is checked in the canonical World Chain AgentBook registry.
Base, World Chain, Tempo, and Arc use built-in public RPCs by default, so developers do not need to configure an RPC for those signing chains. Integrators can still override endpoints with
rpcUrlsby CAIP-2 chain ID, with the existingrpcUrloption preserved as a fallback.Testing
bun test core/tests/viem-client.test.ts core/tests/verify.test.tsbun test x402/tests/hooks.test.tsbunx tsc -p core/tsconfig.json --noEmitbunx tsc -p x402/tsconfig.json --noEmitbun run build:corebun run build:x402