# Contracts & Functions - [Contracts](https://docs.bancor.network/developer-guides/contracts.md) - [Write Functions](https://docs.bancor.network/developer-guides/write-functions.md) - [Transaction Prerequisites](https://docs.bancor.network/developer-guides/write-functions/transaction-prerequisites.md): Before interacting with a blockchain smart contract, you need approval - [approve() / allowance()](https://docs.bancor.network/developer-guides/write-functions/transaction-prerequisites/approve-allowance.md): Give permission for a contract to access your wallet - [Trading](https://docs.bancor.network/developer-guides/write-functions/trading.md): 2 function that enable trade flexibility - [tradeBySourceAmount()](https://docs.bancor.network/developer-guides/write-functions/trading/trading-with-bancor.md): Trade an exact amount of source tokens for as many target tokens as possible - [tradeByTargetAmount()](https://docs.bancor.network/developer-guides/write-functions/trading/tradebytargetamount.md): Trade target tokens for the least amount of source tokens possible - [Trading Troubleshooting](https://docs.bancor.network/developer-guides/write-functions/trading/trading-troubleshooting.md): Common errors for trading on Bancor v3 - [Adding Liquidity](https://docs.bancor.network/developer-guides/write-functions/adding-liquidity.md): Provide liquidity with only one asset - [deposit()](https://docs.bancor.network/developer-guides/write-functions/adding-liquidity/deposit.md): Deposit tokens for ownership in a liquidity pool - [depositFor()](https://docs.bancor.network/developer-guides/write-functions/adding-liquidity/depositfor.md): Deposit tokens on behalf of a different address - [Deposit Troubleshooting](https://docs.bancor.network/developer-guides/write-functions/adding-liquidity/deposit-troubleshooting.md): Common errors for adding liquidity in Bancor v3 - [depositAndJoin()](https://docs.bancor.network/developer-guides/write-functions/adding-liquidity/depositandjoin.md): This function is in the StandardRewards.sol contract. - [Removing Liquidity](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity.md): Initiating withdrawal and the withdrawal process - [Initiating Cooldown](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity/initiating-cooldown.md): Stake pool tokens in withdrawal contracts with Bancor - [initWithdrawal()](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity/initiating-cooldown/initwithdrawal.md): Functions on the PendingWithdrawals contract - [withdraw()](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity/withdraw.md): Withdrawing funds - [cancelWithdrawal()](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity/cancelwithdrawal.md): This function is in the BancorNetwork.sol contract - [Withdraw Troubleshooting](https://docs.bancor.network/developer-guides/write-functions/removing-liquidity/withdraw-troubleshooting.md): Common errors for removing liquidity in Bancor v3 - [Flashloan](https://docs.bancor.network/developer-guides/write-functions/flashloan.md): In a single block, borrow capital and return it with an additional fee - [flashLoan()](https://docs.bancor.network/developer-guides/write-functions/flashloan/flashloan.md): Borrow an indicated amount from the liquidity pool - [Flashloan Troubleshooting](https://docs.bancor.network/developer-guides/write-functions/flashloan/flashloan-troubleshooting.md): Common errors for flash loans in Bancor v3 - [Migrating Liquidity to v3](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3.md) - [Migrating Bancor positions to v3](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-bancor-positions-to-v3.md): Enable the migration of user liquidity - [migratePositions()](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-bancor-positions-to-v3/migratepositions.md): Migrate Bancor v2.1 pool tokens to Bancor v3 - [migratePoolTokens()](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-bancor-positions-to-v3/migratepooltokens.md): Migrate Bancor v1 pool tokens to Bancor v3 - [Errors and Troubleshooting](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-bancor-positions-to-v3/errors-and-troubleshooting.md): Common errors for migrating Bancor positions from previous versions - [Migrating from Uniswap v2](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-from-uniswap-v2.md) - [migrateUniswapV2Position()](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-from-uniswap-v2/migrateuniswapv2position.md): Common errors for migrating Uniswap v2 positions to Bancor v3 - [Migrating from Sushiswap](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-from-sushiswap.md) - [migrateSushiSwapV1Position()](https://docs.bancor.network/developer-guides/write-functions/migrating-liquidity-to-v3/migrating-from-sushiswap/migratesushiswapv1position.md): Common errors for migrating SushiSwap positions to Bancor v3 - [Rewards](https://docs.bancor.network/developer-guides/write-functions/rewards.md) - [join()](https://docs.bancor.network/developer-guides/write-functions/rewards/join.md): This function is in the StandardRewards.sol contract. - [stakeRewards()](https://docs.bancor.network/developer-guides/write-functions/rewards/stakerewards.md): This function is in the StandardRewards.sol contract. - [autoProcessRewards()](https://docs.bancor.network/developer-guides/write-functions/rewards/autoprocessrewards.md): This function is in the AutoCompoundingRewards.sol contract. - [claimRewards()](https://docs.bancor.network/developer-guides/write-functions/rewards/claimrewards.md): This function is in the StandardRewards.sol contract. - [leave()](https://docs.bancor.network/developer-guides/write-functions/rewards/leave.md): This function is in the StandardRewards.sol contract. - [Surplus migration](https://docs.bancor.network/developer-guides/write-functions/surplus-migration.md) - [withdrawPOL()](https://docs.bancor.network/developer-guides/write-functions/surplus-migration/withdrawpol.md) - [Network Fees](https://docs.bancor.network/developer-guides/write-functions/network-fees.md) - [burnNetworkFees()](https://docs.bancor.network/developer-guides/write-functions/network-fees/burnnetworkfees.md) - [Read Functions](https://docs.bancor.network/developer-guides/read-functions.md): Use read functions to simulate an on-chain response - [Rewards](https://docs.bancor.network/developer-guides/read-functions/rewards.md): Reward programs supported by Bancor v3 - [Standard rewards](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards.md) - [Identify if a program exists](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/identify-if-a-program-exists.md) - [Auto Compounding](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/identify-if-a-program-exists/auto-compounding.md): Check if a pool has a rewards program - [Standard Rewards](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/identify-if-a-program-exists/standard-rewards.md): List reward programs for token pools - [programIds()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/programids.md): This function is in the StandardRewards.sol contract. - [programs()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/programs.md): This function is in the StandardRewards.sol contract. - [providerProgramIds()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/providerprogramids.md): This function is in the StandardRewards.sol contract. - [pendingRewards()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/pendingrewards.md): This function is in the StandardRewards.sol contract. - [latestProgramId()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/latestprogramid.md): This function is in the StandardRewards.sol contract. - [isProgramActive()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/isprogramactive.md): This function is in the StandardRewards.sol contract. - [isProgramEnabled()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/isprogramenabled.md): This function is in the StandardRewards.sol contract. - [providerStake()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/providerstake.md): This function is in the StandardRewards.sol contract. - [programStake()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/programstake.md): This function is in the StandardRewards.sol contract. - [providerRewards()](https://docs.bancor.network/developer-guides/read-functions/rewards/standard-rewards/providerrewards.md): This function is in the StandardRewards.sol contract. - [Auto compounding rewards](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards.md) - [bnToken balance](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/bntoken-balance.md) - [isProgramActive()](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/isprogramactive.md) - [isProgramPaused()](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/isprogrampaused.md) - [pools()](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/pools.md) - [program()](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/program.md) - [programs()](https://docs.bancor.network/developer-guides/read-functions/rewards/auto-compounding-rewards/programs.md) - [Liquidity Pool Details](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details.md): This section includes read functions that provide details about liquidity pools. - [liquidityPools()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/liquiditypools.md): This function is in the BancorNetwork.sol contract. - [isPoolValid()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/ispoolvalid.md): This function is in the BancorNetwork.sol contract. - [isPoolStable()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/ispoolstable.md): This function is in the BancorNetworkInfo.sol contract. - [tradingLiquidity()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/tradingliquidity.md): This function is in the BancorNetworkInfo.sol contract. - [depositingEnabled()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/depositingenabled.md): This function is in the BancorNetworkInfo.sol contract. - [poolFundingLimit()](https://docs.bancor.network/developer-guides/read-functions/liquidity-pool-details/poolfundinglimit.md): Bancor v3 supports infinity pools and deposits - [Trades](https://docs.bancor.network/developer-guides/read-functions/trades.md): These functions return the expected results of a trade. - [tradeOutputBySourceAmount()](https://docs.bancor.network/developer-guides/read-functions/trades/tradeoutputbysourceamount.md) - [tradeInputByTargetAmount()](https://docs.bancor.network/developer-guides/read-functions/trades/tradeinputbytargetamount.md) - [tradingEnabled()](https://docs.bancor.network/developer-guides/read-functions/trades/tradingenabled.md): This function is in the BancorNetworkInfo.sol contract. - [tradingFeePMM()](https://docs.bancor.network/developer-guides/read-functions/trades/tradingfeepmm.md): This function is in the BancorNetworkInfo.sol contract. - [Withdrawals](https://docs.bancor.network/developer-guides/read-functions/withdrawals.md): This section includes withdrawal-related read functions. - [isReadyForWithdrawal()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/isreadyforwithdrawal.md): This function is in both PendingWithdrawals.sol and BancorNetworkInfo.sol. - [withdrawalRequest()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/withdrawalrequest.md): This function is in the PendingWithdrawals.sol contract. - [withdrawalAmounts()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/withdrawalamounts.md): This function is in the BancorNetworkInfo.sol contract. - [withdrawalRequestIds()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/withdrawalrequestids.md): This function is in the PendingWithdrawals.sol contract. - [withdrawalRequestCount()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/withdrawalrequestcount.md): This function is in the PendingWithdrawals.sol contract. - [lockDuration()](https://docs.bancor.network/developer-guides/read-functions/withdrawals/lockduration.md): This function is in the PendingWithdrawals.sol contract. - [Pool Token Information](https://docs.bancor.network/developer-guides/read-functions/pool-token-information.md): This section includes read functions that return information about pool tokens. - [poolToken()](https://docs.bancor.network/developer-guides/read-functions/pool-token-information/pooltoken.md): This function is found in the BancorNetworkInfo.sol contract. - [collectionByPool()](https://docs.bancor.network/developer-guides/read-functions/pool-token-information/collectionbypool.md): This function is found in the BancorNetworkInfo.sol contract. - [poolTokenToUnderlying()](https://docs.bancor.network/developer-guides/read-functions/pool-token-information/pooltokentounderlying.md) - [underlyingToPoolToken()](https://docs.bancor.network/developer-guides/read-functions/pool-token-information/underlyingtopooltoken.md): This function is found in the BancorNetworkInfo.sol contract. - [Vortex](https://docs.bancor.network/developer-guides/read-functions/vortex.md): This section includes read functions related to the Bancor Vortex. - [pendingNetworkFeeAmount()](https://docs.bancor.network/developer-guides/read-functions/vortex/pendingnetworkfeeamount.md): This function is in the BancorNetwork.sol contract. - [minNetworkFeeBurn()](https://docs.bancor.network/developer-guides/read-functions/vortex/minnetworkfeeburn.md) - [Surplus whitelist](https://docs.bancor.network/developer-guides/read-functions/surplus-whitelist.md) - [protectedTokenWhitelist()](https://docs.bancor.network/developer-guides/read-functions/surplus-whitelist/protectedtokenwhitelist.md) - [Data & Events](https://docs.bancor.network/developer-guides/data-and-events.md) - [General Data](https://docs.bancor.network/developer-guides/data-and-events/general-data.md): Using data to trigger events from a smart contract - [contextId](https://docs.bancor.network/developer-guides/data-and-events/general-data/contextid.md): The unique value contexid logs data events - [Trading Data](https://docs.bancor.network/developer-guides/data-and-events/trading-data.md): The event to track trades on the Bancor Network - [event TokensTraded()](https://docs.bancor.network/developer-guides/data-and-events/trading-data/event-tokenstraded.md): This function fires an event after a token is successfully swapped - [Liquidity Data](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data.md): The events to track liquidity data - [TotalLiquidityUpdated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/totalliquidityupdated.md) - [TradingLiquidityUpdated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/tradingliquidityupdated.md) - [TokensDeposited()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/tokensdeposited.md) - [TokensWithdrawn()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/tokenswithdrawn.md) - [WithdrawalInitiated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/withdrawalinitiated.md) - [WithdrawalCancelled()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/withdrawalcancelled.md) - [WithdrawalCompleted()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/withdrawalcompleted.md) - [LockDurationUpdated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/lockdurationupdated.md) - [Cross AMM Migration Data](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/cross-amm-migration-data.md) - [UniswapV2PositionMigrated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/cross-amm-migration-data/uniswapv2positionmigrated.md) - [SushiswapV1PositionMigrated()](https://docs.bancor.network/developer-guides/data-and-events/liquidity-data/cross-amm-migration-data/sushiswapv1positionmigrated.md) - [Flashloan Data](https://docs.bancor.network/developer-guides/data-and-events/flashloan-data.md) - [FlashLoanCompleted()](https://docs.bancor.network/developer-guides/data-and-events/flashloan-data/flashloancompleted.md) - [FlashLoanFeePPMUpdated()](https://docs.bancor.network/developer-guides/data-and-events/flashloan-data/flashloanfeeppmupdated.md) - [Rewards](https://docs.bancor.network/developer-guides/data-and-events/rewards.md): Events & data points related to rewards - [Staking and Unstaking](https://docs.bancor.network/developer-guides/data-and-events/rewards/staking-and-unstaking.md) - [Event ProviderJoined()](https://docs.bancor.network/developer-guides/data-and-events/rewards/staking-and-unstaking/event-providerjoined.md) - [Event ProviderLeft()](https://docs.bancor.network/developer-guides/data-and-events/rewards/staking-and-unstaking/event-providerleft.md) - [Claiming and Restaking Rewards](https://docs.bancor.network/developer-guides/data-and-events/rewards/claiming-and-restaking-rewards.md) - [Event RewardsClaimed()](https://docs.bancor.network/developer-guides/data-and-events/rewards/claiming-and-restaking-rewards/event-rewardsclaimed.md) - [Event RewardsStaked()](https://docs.bancor.network/developer-guides/data-and-events/rewards/claiming-and-restaking-rewards/event-rewardsstaked.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.bancor.network/developer-guides.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.