Chainlink Data Feeds are the quickest way to access market prices for real-world assets. This guide demonstrates how to read Chainlink Data Feeds on the Solana Devnet using off-chain examples in the Chainlink Solana Starter Kit. To learn how to use Data Feeds in your on-chain Solana programs, see the Using Data Feeds On-Chain guide.

To get the full list of Chainlink Data Feeds on Solana, see the Solana Feeds page.

Table of contents:

• Install the required tools
• Run the example program

Install the required tools

Before you begin, set up your environment for development on Solana:

1. Install Git if it is not already configured on your system.

2. Install Node.js 14 or higher. Run node --version to verify which version you have installed:

   node --version
   

3. Install Yarn to simplify package management and run code samples.

4. Use the Node package manager to Install Anchor globally. The global install allows you to run the Anchor CLI. Depending on your environment, this step might require sudo permissions:

   npm i -g @project-serum/anchor-cli
   

   On some operating systems, you might need to build and install Anchor locally. See the Anchor documentation for instructions.

Run the example program

After you install the required tools, clone the example code from the solana-starter-kit repository.

1. In a terminal, clone the solana-starter-kit repository and change to the solana-starter-kit directory:

   git clone https://github.com/smartcontractkit/solana-starter-kit &&
   cd ./solana-starter-kit
   

   You can see the complete code for the example on GitHub.

2. In the ./solana-starter-kit directory, install Node.js dependencies defined in the package.json file:

   yarn install
   

3. Create a temporary Solana wallet to use for this example. Because your application runs off-chain and does not run any functions or alter data on-chain, the wallet does not require any SOL tokens to function.

   solana-keygen new --outfile ./id.json
   

   1. Set the Anchor environment variables. Anchor uses these to determine which wallet to use and Solana cluster to use. For a list of available networks and endpoints, see the Solana Cluster RPC Endpoints documentation.

      export ANCHOR_PROVIDER_URL=https://api.devnet.solana.com &&
      export ANCHOR_WALLET=./id.json
      

4. Run the read-data.ts example:

   yarn run read-data
   

   The example code retrieves and prints the current price feed data until you close the application:

   yarn run v1.22.18
   $ ts-node ./read-data.ts
   9731000000
   9732000000
   9730839909
   9734000000
   

To learn more about Solana and Anchor, see the Solana Documentation and the Anchor Documentation.