Pyth Price Feeds

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Core Features

1. Price Feed Management
   • Symbol-based feed lookup
   • Price feed ID resolution
   • Real-time price fetching
   • Decimal adjustment
2. Price Operations
   • Multi-symbol support
   • Price scaling
   • Error handling
   • Format conversion

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Usage

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Get Price Feed ID

// Get feed ID by token symbol
const feedId = await agent.methods.getPythPriceFeedID("SOL");
console.log("SOL Price Feed ID:", feedId);

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Fetch Current Price

// Fetch current price using feed ID
const price = await agent.methods.getPythPrice(feedId);
console.log("Current Price:", price);

// Or chain the operations
const symbol = "SOL";
const feedId = await agent.methods.getPythPriceFeedID(symbol);
const price = await agent.methods.getPythPrice(feedId);

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Example Prompts

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Natural Language Prompts

"Get the current SOL price from Pyth"

"Check ETH price using Pyth oracle"

"Fetch BTC/USD price feed"

"Look up price feed ID for USDC"

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LangChain Tool Prompts

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Fetch Price

{
  "tokenSymbol": "SOL"
}

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Direct Feed Query

{
  "priceFeedId": "H6ARHf6YXhGYeQfUzQNGk6rDNnLBQKrenN712K4AQJEG"
}

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Implementation Details

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Price Feed ID Lookup

interface PythPriceFeedIDItem {
  id: string;
  attributes: {
    base: string;
    quote: string;
    asset_type: string;
  };
}

// Features
- Case-insensitive matching
- Multiple feed handling
- Asset type filtering
- Error recovery

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Price Fetching

interface PythPrice {
  price: {
    price: string;
    expo: number;
  };
}

// Features
- Decimal adjustment
- Price scaling
- Format handling
- BN precision

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Response Formats

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Price Feed ID Response

{
  status: "success",
  feedId: "H6ARHf6YXhGYeQfUzQNGk6rDNnLBQKrenN712K4AQJEG"
}

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Price Response

{
  status: "success",
  price: "23.45",
  message: "Current price: $23.45"
}

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Error Handling

try {
  const price = await agent.methods.getPythPrice(feedId);
} catch (error) {
  if (error.message.includes("No price feed")) {
    // Handle missing feed
  } else if (error.message.includes("HTTP error")) {
    // Handle network issues
  }
}

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Best Practices

1. Feed ID Management
   • Cache common feeds
   • Validate symbols
   • Handle multiple matches
   • Monitor updates
2. Price Fetching
   • Handle decimals properly
   • Validate responses
   • Consider staleness
   • Format consistently
3. Error Handling
   • Implement retries
   • Validate inputs
   • Check feed status
   • Log errors
4. Performance
   • Cache feed IDs
   • Batch requests
   • Monitor latency
   • Handle timeouts

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Common Issues

1. Feed Lookup
   • Invalid symbols
   • Multiple matches
   • Missing feeds
   • Network errors
2. Price Fetching
   • Stale prices
   • Decimal errors
   • Format issues
   • Connection problems
3. Data Quality
   • Price accuracy
   • Update frequency
   • Feed reliability
   • Data consistency

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Common Price Feeds

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Price Update Frequency

• Most feeds update every 400ms
• Updates depend on market conditions
• Consider confidence intervals
• Monitor update timestamps

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Integration Tips

1. Price Monitoring
   Copy

   // Regular price checks
   setInterval(async () => {
     const price = await agent.methods.getPythPrice(feedId);
     console.log(`Current price: $${price}`);
   }, 5000);
   

2. Error Recovery
   Copy

   async function getPriceWithRetry(feedId: string, retries = 3) {
     for (let i = 0; i < retries; i++) {
       try {
         return await agent.methods.getPythPrice(feedId);
       } catch (error) {
         if (i === retries - 1) throw error;
         await new Promise(r => setTimeout(r, 1000));
       }
     }
   }
   

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Related Functions

• getTokenData: Get token information
• trade: Execute trades
• fetchMarketData: Get market info
• calculatePositionValue: Value positions