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Starknet API Overview

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Starknet URL

https://api.fibrous.finance/starknet

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Common Concepts

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Authentication

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Rate Limiting

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Common Token Addresses

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Response Codes

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Available Endpoints

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Route

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Execute

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Calldata

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Best Practices

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Slippage Protection

• Always set a reasonable slippage value (0.1% - 1% for stable pairs)
• Use higher slippage for volatile pairs or low liquidity tokens
• Monitor price impact to ensure favorable trades

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Gas Optimization

• Use the direct parameter for simple swaps between major tokens
• Set excludeProtocols to skip specific protocols if needed
• Consider batch swaps for multiple transactions

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Error Handling

• Always check the success field in responses
• Implement proper error handling in your code
• Monitor transaction status after execution

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Quick Start Example

1. First, get the optimal route:

curl -X GET "https://api.fibrous.finance/starknet/route" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": "1000000000000000000",  # 1 ETH
    "tokenInAddress": "0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
    "tokenOutAddress": "0x053c91253bc9682c04929ca02ed00b3e423f6710d2ee7e0d5ebb06f3ecf368a8"
  }'

2. Then, get the execution calldata:

curl -X GET "https://api.fibrous.finance/starknet/execute" \
  -H "Content-Type: application/json" \
  -d '{
    "amount": "1000000000000000000",
    "tokenInAddress": "0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7",
    "tokenOutAddress": "0x053c91253bc9682c04929ca02ed00b3e423f6710d2ee7e0d5ebb06f3ecf368a8",
    "slippage": 0.5,
    "destination": "YOUR_ADDRESS"
  }'

3. Finally, execute the transaction using the returned calldata with your preferred Web3 library.

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Need Help?

• Check our FAQ for common questions
• Join our Discord for community support
• Contact us at contact@fibrous.finance for direct support