feat: add CDP (Coinbase Developer Platform) MPC wallet support#58
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skingem1 wants to merge 1 commit intoBlockRunAI:mainfrom
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feat: add CDP (Coinbase Developer Platform) MPC wallet support#58skingem1 wants to merge 1 commit intoBlockRunAI:mainfrom
skingem1 wants to merge 1 commit intoBlockRunAI:mainfrom
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- Add WalletSigner interface abstraction (wallet-signer.ts)
Decouples x402 payment signing from key management strategy
- Add CdpWalletSigner (wallet-cdp.ts)
Uses @coinbase/coinbase-sdk for MPC wallet creation/loading
Signs EIP-712 typed data via CDP's signHash
Persists wallet to ~/.openclaw/blockrun/cdp/wallet.json
- Add PrivateKeyWalletSigner (wallet-pk.ts)
Wraps existing viem signTypedData — no behavior change
- Refactor x402.ts to use WalletSigner interface
createPaymentFetch() now accepts WalletSigner | `0x${string}`
Fully backward compatible — raw private key still works
- Refactor proxy.ts to accept optional walletSigner in ProxyOptions
Falls back to raw key if no signer provided
- Update index.ts to detect CDP credentials at startup
Env vars: BLOCKRUN_CDP_API_KEY_NAME + BLOCKRUN_CDP_PRIVATE_KEY
CDP takes precedence over raw key; graceful fallback on error
- Add CDP auth methods to auth.ts (cdpWalletAuth + cdpEnvAuth)
- Add docs/cdp-wallet.md
Build: ESM + DTS clean
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CDP Wallet Support for ClawRouter
Adds Coinbase Developer Platform (CDP) MPC wallets as an alternative to raw private keys for x402 payments.
Why?
Changes
New files
src/wallet-signer.ts—WalletSignerinterface (abstract signing layer)src/wallet-cdp.ts— CDP MPC wallet implementation using@coinbase/coinbase-sdksrc/wallet-pk.ts— Raw private key wrapper (satisfiesWalletSigner)docs/cdp-wallet.md— Full setup documentationUpdated files
src/x402.ts—createPaymentFetch()now acceptsWalletSigner |0x${string}``src/proxy.ts—ProxyOptionsaccepts optionalwalletSignersrc/index.ts— Auto-detects CDP env vars at startup, falls back to raw keysrc/auth.ts— NewcdpWalletAuth(wizard) +cdpEnvAuth(env vars) methodsUsage
Build