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90 lines
2.0 KiB
Plaintext
90 lines
2.0 KiB
Plaintext
---
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title: Smart Wallets
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description: ERC-4337 account abstraction. Create smart wallets, sponsor gas, batch transactions, and manage user operations.
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---
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Bootnode Smart Wallets implement ERC-4337 account abstraction. Create wallets for your users, sponsor their gas fees, and batch multiple operations into single transactions.
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## Create a Smart Wallet
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```
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POST /v1/wallets/create
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```
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```bash
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curl -X POST https://api.bootno.de/v1/wallets/create \
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-H "X-API-Key: YOUR_API_KEY" \
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-H "Content-Type: application/json" \
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-d '{
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"owner_address": "0x742d35Cc6634C0532925a3b844Bc9e7595f2bD18",
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"chain": "ethereum",
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"network": "mainnet",
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"salt": "my-app-user-123"
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}'
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```
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```json title="Response"
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{
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"address": "0x1234567890abcdef...",
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"owner": "0x742d35Cc...",
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"chain": "ethereum",
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"network": "mainnet",
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"factory": "0xEntryPointFactory...",
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"deployed": false
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}
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```
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The wallet address is deterministic based on owner + salt. It can receive funds before deployment.
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## Gas Sponsorship
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Create gas policies to sponsor user transactions:
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```
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POST /v1/gas/policies
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```
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```python
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policy = await client.gas.create_policy(
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name="my-app-sponsor",
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chain="ethereum",
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max_gas_per_op=500000,
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max_spend_per_day_usd=100.0,
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allowed_contracts=["0xMyContract..."],
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allowed_methods=["transfer", "approve"]
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)
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```
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## UserOperation Flow
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1. Build the UserOp with `calldata` for target contract
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2. Estimate gas via `/v1/gas/estimate`
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3. Sign with owner key
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4. Submit via `/v1/bundler/send`
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5. Track via `/v1/bundler/status/{hash}`
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```typescript
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// Estimate gas for a UserOp
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const estimate = await client.gas.estimate({
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sender: walletAddress,
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callData: encodedCallData,
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chain: 'ethereum',
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})
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// Submit signed UserOp
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const result = await client.bundler.send({
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chain: 'ethereum',
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userOp: signedUserOp,
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})
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console.log('UserOp hash:', result.hash)
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```
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## List Wallets
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```
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GET /v1/wallets
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```
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Returns all smart wallets associated with your project.
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