> ## Documentation Index > Fetch the complete documentation index at: https://dev.jup.ag/docs/llms.txt > Use this file to discover all available pages before exploring further. # Earn CPI Integration > Cross-Program Invocation integration for Jupiter Lend Earn deposit and withdraw. This guide covers Cross-Program Invocation (CPI) integration for the Earn protocol's deposit and withdraw functions. Use this when your on-chain program needs to call Jupiter Lend Earn directly. For TypeScript SDK integration (off-chain), see [Deposit](/lend/earn/deposit) and [Withdraw](/lend/earn/withdraw). ## Program Addresses | Program | Mainnet | Devnet | | --------- | --------------------------------------------- | ---------------------------------------------- | | Lending | `jup3YeL8QhtSx1e253b2FDvsMNC87fDrgQZivbrndc9` | `7tjE28izRUjzmxC1QNXnNwcc4N82CNYCexf3k8mw67s3` | | Liquidity | `jupeiUmn818Jg1ekPURTpr4mFo29p46vygyykFJ3wZC` | `5uDkCoM96pwGYhAUucvCzLfm5UcjVRuxz6gH81RnRBmL` | *** ## Deposit CPI ### Discriminator ```rust theme={null} fn get_deposit_discriminator() -> Vec { // discriminator = sha256("global:deposit")[0..8] vec![242, 35, 198, 137, 82, 225, 242, 182] } ``` ### Deposit CPI Struct ```rust theme={null} pub struct DepositParams<'info> { // User accounts pub signer: AccountInfo<'info>, pub depositor_token_account: AccountInfo<'info>, pub recipient_token_account: AccountInfo<'info>, pub mint: AccountInfo<'info>, // Protocol accounts pub lending_admin: AccountInfo<'info>, pub lending: AccountInfo<'info>, pub f_token_mint: AccountInfo<'info>, // Liquidity protocol accounts pub supply_token_reserves_liquidity: AccountInfo<'info>, pub lending_supply_position_on_liquidity: AccountInfo<'info>, pub rate_model: AccountInfo<'info>, pub vault: AccountInfo<'info>, pub liquidity: AccountInfo<'info>, pub liquidity_program: AccountInfo<'info>, // Rewards and programs pub rewards_rate_model: AccountInfo<'info>, pub token_program: AccountInfo<'info>, pub associated_token_program: AccountInfo<'info>, pub system_program: AccountInfo<'info>, // Target lending program pub lending_program: UncheckedAccount<'info>, } ``` ### Deposit Implementation ```rust theme={null} impl<'info> DepositParams<'info> { pub fn deposit(&self, amount: u64) -> Result<()> { let mut instruction_data = get_deposit_discriminator(); instruction_data.extend_from_slice(&amount.to_le_bytes()); let account_metas = vec![ AccountMeta::new(*self.signer.key, true), AccountMeta::new(*self.depositor_token_account.key, false), AccountMeta::new(*self.recipient_token_account.key, false), AccountMeta::new_readonly(*self.mint.key, false), AccountMeta::new_readonly(*self.lending_admin.key, false), AccountMeta::new(*self.lending.key, false), AccountMeta::new(*self.f_token_mint.key, false), AccountMeta::new(*self.supply_token_reserves_liquidity.key, false), AccountMeta::new(*self.lending_supply_position_on_liquidity.key, false), AccountMeta::new_readonly(*self.rate_model.key, false), AccountMeta::new(*self.vault.key, false), AccountMeta::new(*self.liquidity.key, false), AccountMeta::new(*self.liquidity_program.key, false), AccountMeta::new_readonly(*self.rewards_rate_model.key, false), AccountMeta::new_readonly(*self.token_program.key, false), AccountMeta::new_readonly(*self.associated_token_program.key, false), AccountMeta::new_readonly(*self.system_program.key, false), ]; let instruction = Instruction { program_id: *self.lending_program.key, accounts: account_metas, data: instruction_data, }; invoke(&instruction, &[ self.signer.clone(), self.depositor_token_account.clone(), self.recipient_token_account.clone(), self.mint.clone(), self.lending_admin.clone(), self.lending.clone(), self.f_token_mint.clone(), self.supply_token_reserves_liquidity.clone(), self.lending_supply_position_on_liquidity.clone(), self.rate_model.clone(), self.vault.clone(), self.liquidity.clone(), self.liquidity_program.clone(), self.rewards_rate_model.clone(), self.token_program.clone(), self.associated_token_program.clone(), self.system_program.clone(), ]).map_err(|_| ErrorCodes::CpiToLendingProgramFailed.into()) } } ``` ### Deposit Account Explanations | Account | Purpose | Mutability | | -------------------------------------- | ---------------------------------------- | --------------- | | `signer` | User performing deposit | Mutable, signer | | `depositor_token_account` | User's underlying token account (source) | Mutable | | `recipient_token_account` | User's jlToken account (destination) | Mutable | | `mint` | Underlying token mint | Immutable | | `lending_admin` | Protocol configuration PDA | Immutable | | `lending` | Pool-specific configuration PDA | Mutable | | `f_token_mint` | jlToken mint account | Mutable | | `supply_token_reserves_liquidity` | Liquidity protocol token reserves | Mutable | | `lending_supply_position_on_liquidity` | Protocol's position in liquidity pool | Mutable | | `rate_model` | Interest rate calculation model | Immutable | | `vault` | Protocol vault holding deposited tokens | Mutable | | `liquidity` | Main liquidity protocol PDA | Mutable | | `liquidity_program` | Liquidity protocol program ID | Mutable | | `rewards_rate_model` | Rewards calculation model PDA | Immutable | *** ## Withdraw CPI ### Discriminator ```rust theme={null} fn get_withdraw_discriminator() -> Vec { // discriminator = sha256("global:withdraw")[0..8] vec![183, 18, 70, 156, 148, 109, 161, 34] } ``` ### Withdraw CPI Struct ```rust theme={null} pub struct WithdrawParams<'info> { // User accounts pub signer: AccountInfo<'info>, pub owner_token_account: AccountInfo<'info>, pub recipient_token_account: AccountInfo<'info>, // Protocol accounts pub lending_admin: AccountInfo<'info>, pub lending: AccountInfo<'info>, pub mint: AccountInfo<'info>, pub f_token_mint: AccountInfo<'info>, // Liquidity protocol accounts pub supply_token_reserves_liquidity: AccountInfo<'info>, pub lending_supply_position_on_liquidity: AccountInfo<'info>, pub rate_model: AccountInfo<'info>, pub vault: AccountInfo<'info>, pub claim_account: AccountInfo<'info>, pub liquidity: AccountInfo<'info>, pub liquidity_program: AccountInfo<'info>, // Rewards and programs pub rewards_rate_model: AccountInfo<'info>, pub token_program: AccountInfo<'info>, pub associated_token_program: AccountInfo<'info>, pub system_program: AccountInfo<'info>, // Target lending program pub lending_program: UncheckedAccount<'info>, } ``` ### Withdraw Account Explanations | Account | Purpose | Mutability | | -------------------------------------- | --------------------------------------------- | --------------- | | `signer` | User performing withdrawal | Mutable, signer | | `owner_token_account` | User's jlToken account (source, burned) | Mutable | | `recipient_token_account` | User's underlying token account (destination) | Mutable | | `lending_admin` | Protocol configuration PDA | Immutable | | `lending` | Pool-specific configuration PDA | Mutable | | `mint` | Underlying token mint | Immutable | | `f_token_mint` | jlToken mint account (burned from supply) | Mutable | | `supply_token_reserves_liquidity` | Liquidity protocol token reserves | Mutable | | `lending_supply_position_on_liquidity` | Protocol's position in liquidity pool | Mutable | | `rate_model` | Interest rate calculation model | Immutable | | `vault` | Protocol vault (source of withdrawn tokens) | Mutable | | `claim_account` | Handles withdrawal claim processing | Mutable | | `liquidity` | Main liquidity protocol PDA | Mutable | | `liquidity_program` | Liquidity protocol program ID | Mutable | | `rewards_rate_model` | Rewards calculation model PDA | Immutable | *** ## Context Helpers (TypeScript) For frontend/client code that needs to resolve CPI accounts, the SDK provides context helpers that return all required account addresses: ```typescript theme={null} import { getDepositContext, getWithdrawContext } from "@jup-ag/lend/earn"; // Get all accounts needed for a deposit CPI const depositContext = await getDepositContext({ asset: usdcMint, signer: userPublicKey, }); // Get all accounts needed for a withdraw CPI const withdrawContext = await getWithdrawContext({ asset: usdcMint, signer: userPublicKey, }); // Pass these accounts to your Anchor program await program.methods .yourDepositMethod(amount) .accounts({ signer: depositContext.signer, depositorTokenAccount: depositContext.depositorTokenAccount, recipientTokenAccount: depositContext.recipientTokenAccount, lendingAdmin: depositContext.lendingAdmin, lending: depositContext.lending, fTokenMint: depositContext.fTokenMint, // ... all other accounts from context lendingProgram: new PublicKey("jup3YeL8QhtSx1e253b2FDvsMNC87fDrgQZivbrndc9"), }) .rpc(); ``` *** ## Key Notes ### Account Derivation Most accounts follow standard PDA derivation patterns: * Lending PDA: `[LENDING_SEED, mint.key(), f_token_mint.key()]` * jlToken Mint: `[F_TOKEN_MINT_SEED, mint.key()]` * Lending Admin: `[LENDING_ADMIN_SEED]` ### Special Considerations * **Amount = u64::MAX**: Deposits/withdraws the entire balance * **Account Creation**: ATA accounts are created automatically when needed (`init_if_needed`) * **Claim Account**: Only present in withdraw operations for processing withdrawal claims ### Error Codes | Error | Description | | --------------------------- | ----------------------------- | | `FTokenMinAmountOut` | Slippage protection triggered | | `FTokenMaxAmount` | Maximum amount exceeded | | `FTokenOnlyAuth` | Unauthorised operation | | `FTokenOnlyRebalancer` | Rebalancer-only operation | | `CpiToLendingProgramFailed` | CPI call failed | ### Return Values * `deposit()` returns shares minted * `withdraw()` returns shares burned