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docs: fix stale Base chain references (Arbitrum) #3

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docs: fix stale Base chain references (Arbitrum) #3

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4232b12
docs: correct chain references from Base to Arbitrum
koko1123 Jul 2, 2026
2049e11
docs: pass chain_id explicitly in quickstart so validate_chain_id passes
koko1123 Jul 2, 2026
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7 changes: 4 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -20,10 +20,11 @@ from perpcity_sdk import PerpCityContext, open_taker_position, OpenTakerPosition

# Initialize context
context = PerpCityContext(
rpc_url="https://base-sepolia.g.alchemy.com/v2/YOUR_KEY",
rpc_url="https://arb-sepolia.g.alchemy.com/v2/YOUR_KEY",
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private_key="0xYOUR_PRIVATE_KEY",
perp_manager_address="0xPERP_MANAGER",
usdc_address="0xUSDC",
chain_id=421614, # Arbitrum Sepolia; the default predates the Arbitrum deployment
)

# Fetch market data
Expand Down Expand Up @@ -53,7 +54,7 @@ print(f"PnL: ${details.pnl:.2f}")
### PerpCityContext

```python
context = PerpCityContext(rpc_url, private_key, perp_manager_address, usdc_address, chain_id=84532)
context = PerpCityContext(rpc_url, private_key, perp_manager_address, usdc_address, chain_id=421614)
```

**Methods:**
Expand Down Expand Up @@ -89,7 +90,7 @@ context = PerpCityContext(rpc_url, private_key, perp_manager_address, usdc_addre
## Environment Variables

```
RPC_URL=https://base-sepolia.g.alchemy.com/v2/YOUR_KEY
RPC_URL=https://arb-sepolia.g.alchemy.com/v2/YOUR_KEY
PRIVATE_KEY=0xYOUR_PRIVATE_KEY
PERP_MANAGER_ADDRESS=0xYOUR_PERP_MANAGER
USDC_ADDRESS=0xYOUR_USDC
Expand Down
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