Performing CPIs with Anchor

Cross-Program Invocations (CPIs)

Chapter 2: Performing CPIs with Anchor

Anchor makes CPIs straightforward with CpiContext.

• Key Points:

  • Set up CPIs with CpiContext.

  • Specify the target program and accounts.

  • Anchor manages the details.

• Code Example:

pub fn transfer_sol(ctx: Context<TransferSol>, amount: u64) -> Result<()> {
    let cpi_program = ctx.accounts.system_program.to_account_info();
    let cpi_accounts = system_program::Transfer {
        from: ctx.accounts.from.to_account_info(),
        to: ctx.accounts.to.to_account_info(),
    };
    let cpi_ctx = CpiContext::new(cpi_program, cpi_accounts);
    system_program::transfer(cpi_ctx, amount)?;
    Ok(())
}

• Interactivity: Simulate a SOL transfer and check account balances.