feat(nodejs-langgraph-agent): LangGraph ReAct agent with Dynamic server-side MPC wallet - #65
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avneesh0612 wants to merge 2 commits into
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feat(nodejs-langgraph-agent): LangGraph ReAct agent with Dynamic server-side MPC wallet#65avneesh0612 wants to merge 2 commits into
avneesh0612 wants to merge 2 commits into
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… delegated MPC wallet A minimal LangGraph ReAct agent (Claude Haiku 4.5) that acts on a user's wallet through a Dynamic delegated MPC wallet — no private keys held by the agent. Trimmed down from the full langgraph-dynamic-agent (drops Polymarket, LI.FI, voice). Tools: - list_wallets — returns the delegated wallet address - get_token_balances — Dynamic multi-chain balances API (optional USD prices) - send_transaction — native transfer signed via Dynamic MPC, gated behind a y/N confirm prompt Matches the repo's nodejs-* conventions (pnpm + tsx, dotenv, exact-pinned deps, .example.env). Only .example.env (placeholders) is tracked; real .env is gitignored. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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…op delegation + user JWT - Replace delegated MPC wallet with DynamicEvmWalletClient server wallet; agent creates and owns its wallet on first run, persisted to .wallet-state.json (0o600, gitignored) — no user JWT or delegation credentials required - get_token_balances now queries native balances on-chain via viem instead of the Dynamic balances API (which needed a user JWT) - Migrate from deprecated createReactAgent (@langchain/langgraph/prebuilt) to createAgent from langchain@1.4.1 (llm→model, checkpointSaver→checkpointer, stateModifier→systemPrompt) - Trim .example.env to just ANTHROPIC_API_KEY + DYNAMIC_ENVIRONMENT_ID + DYNAMIC_API_KEY Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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What
A minimal LangGraph ReAct agent (Claude Haiku 4.5) that acts through its own Dynamic server-side MPC wallet. The agent creates and owns its wallet entirely server-side — no user JWT, no delegation, no client-side approval flow required. On first run, a new MPC wallet is created and persisted to `.wallet-state.json`; subsequent runs reuse it.
Tools
list_walletsget_token_balancessend_transactiony/Nconfirm prompt.Layout
Notes
nodejs-*conventions: pnpm +tsx,dotenv, exact-pinned dependencies,.example.env..example.env(placeholders) is tracked; real.envand.wallet-state.jsonare gitignored.pnpm typecheckpasses; runtime startup verified (creates/loads the server wallet, then runs the REPL).Security considerations
.env*and.wallet-state.jsonare gitignored, only placeholder.example.envis tracked..wallet-state.jsoncontains the server key share (written with0o600permissions) — treated like a private key.send_transactionrequires explicity/Nuser confirmation before broadcasting.🤖 Generated with Claude Code