Features Available

1. Find router

Func client.findRouters()

Aggregator Client v2 (v0.x.x) vs v3 (v1.x.x) Compatibility:

• Input: The findRouterInput parameter structure is identical for both versions

• Output Changes: v3 replaces the router field with paths

• Optimization: v3 consolidates duplicate pools in the response, resulting in significant gas savings for multi-path routes

Params

Required parameters

Name	Type	Details
from	String	The coin type of input coin.
target	String	The coin type of output coin.
amount	BN	The amount of input or output,determined byAmountIn
byAmountIn	Boolean	true means fixed the amount of input, false means fixed the amount of output.

Optional parameters

In principle, we do not recommend adding these optimal parameters if you don't have any specific custon needs, because our aggregator service will automatically optimize these settings in each SDK update to pursue optimal pricing and performance of transactions.

Name	Type	Details
providers	String Array	Now, support cetus, deepbook v2/v3, kriya v2/v3, flowx v2/v3, aftermath, turbos, afsui, volo, haedal, bluemove, scallop, suilend, bluefin. If not set, it's will default support best providers by sdk version.
depth	Number	now depths support betweent 1 and 3, default setting is 3, it means you can get 3 hops path.
splitAlgorithm	String	devide_equally or geometric, recommand just use default devide_equally.
splitFactor	Number	used to contral geometric split width.
splitCount	Number	this field represents the maximum number of splits for a transaction. If you do not want to split, set it to 1. The default value is 20.

ResponseV3

When using Aggregator SDK v3 (version 1.0.0 or higher), the findRouter method will return data in the RouterV3 structure.

Name	Type	Details
quoteID	string	A randomly generated ID from the aggregator service for tracking index transactions and quotes.
amountIn	BN	Total amount in.
amountOut	BN	Total amount out.
byAmountIn	Boolean	true means fixed the amount of input, false means fixed the amount of output. This is the same as request parameters.
paths	Path[]	All liquidity paths data.
insufficientLiquidity	Boolean	true means liquidity insufficient, false means liquidity enough.
deviationRatio	Number	Price deviation ratio, (0.01 means 1%), indicating the degree of difference between the aggregator result and market price. When the price deviation ratio is undefined (no reference market price available) or relatively large (significant deviation from existing market prices), provide users with a reference option on whether to execute the trade at the current price to avoid potential asset losses.
packages	Map<string, string>	When user pass new version parameters, it will return newest aggregator packages data.
overlayFee	Number	The amount for overlay fee.
totalDeepFee	Number	Calculated need deep fee for deep pools.
error	RouterError	Error code and msg for aggregator.

ResponseV2

Name	Type	Details
quoteID	string	A randomly generated ID from the aggregator service for tracking index transactions and quotes.
amountIn	BN	Total amount in.
amountOut	BN	Total amount out.
byAmountIn	Boolean	true means fixed the amount of input, false means fixed the amount of output. This is the same as request parameters.
routes	Router[]	All liquidity routes data.
insufficientLiquidity	Boolean	true means liquidity insufficient, false means liquidity enough.
deviationRatio	Number	Price deviation ratio, (0.01 means 1%), indicating the degree of difference between the aggregator result and market price. When the price deviation ratio is undefined (no reference market price available) or relatively large (significant deviation from existing market prices), provide users with a reference option on whether to execute the trade at the current price to avoid potential asset losses.
packages	Map<string, string>	When user pass new version parameters, it will return newest aggregator packages data.
overlayFee	Number	The amount for overlay fee.
totalDeepFee	Number	Calculated need deep fee for deep pools.
error	RouterError	Error code and msg for aggregator.

Example

import { AggregatorClient, getAllProviders } from "@cetusprotocol/aggregator-sdk"
import BN from "bn.js"

const client = new AggregatorClient({})

const amount = new BN(1000000)
const from = "0x2::sui::SUI"
const target = "0x06864a6f921804860930db6ddbe2e16acdf8504495ea7481637a1c8b9a8fe54b::cetus::CETUS"
const providers = getAllProviders()

const router = await client.findRouters({
  from,
  target,
  amount,
  byAmountIn: true, // `true` means fix input amount, `false` means fix output amount
  providers
})

2. Build fast swap transaction

This method will send swaped coins to user directly. Here are three type fast swap params:

• BuildFastRouterSwapParamsV3: The new SDK version only supports this parameter format. (Only support in aggregator v3 version, version ≥ v1.0.0)

• BuildFastRouterSwapParamsV2: This legacy parameter is no longer supported in the latest SDK versions (v >= 1.0.0).. (Only support in aggregator v2 version, v1.0.0> version >= v0.0.0)

• BuildFastRouterSwapParams: Here's the English translation: This legacy parameter is no longer supported in the latest SDK versions (v >= 1.0.0).(Only support in aggregator v2 version, v1.0.0> version >= v0.0.0)

We recommend using the V3 version of the parameters if you upgrade to the latest SDK versions (version > v1.1.1). This way, if a contract on any platform undergoes a breaking update in the future, you won't need to make any changes; the SDK will automatically update to the latest contract address through the response returned by find router methods, while also reducing gas costs by leveraging the most optimized contract versions

BuildFastRouterSwapParamsV3

Required Params

Name	Type	Details
router	RouterDataV3 Object	returned by find router method in latest aggregator sdk version
slippage	Number	A value between 0 and 1, representing the maximum allowed price slippage as a percentage. A value of 0.01 allows up to 1% price slippage. This parameter is crucial for protecting your assets in a rapidly changing market.
txb	Transaction	The programmable transaction builder.

Optional parameters

Name	Type	Details
partner	String	The partner address. Details about partner can be found here. You can now set the partner directly during client initialization. This parameter will soon be deprecated; please migrate your configuration.
refreshAllCoins	Boolean	If true, retrieves all coin types when setting up the swap; if false, uses the existing coins.
payDeepFeeAmount	Number	The deep amount for pay deep fee in deepbookv3 path. Currently, all pools that charge a swap fee are covered by Cetus.

Example

import { AggregatorClient } from "@cetusprotocol/aggregator-sdk"
import { Transaction } from '@mysten/sui/transactions';

const client = new AggregatorClient({})

const amount = new BN(1000000)
const from = "0x2::sui::SUI"
const target = "0x06864a6f921804860930db6ddbe2e16acdf8504495ea7481637a1c8b9a8fe54b::cetus::CETUS"

const router = await client.findRouters({
  from,
  target,
  amount,
  byAmountIn: true, // `true` means fix input amount, `false` means fix output amount
})

const txb = new Transaction()

await client.fastRouterSwap({
  router,
  txb,
  slippage: 0.01,
})

3. Build swap transaction and return target coin object

This method will build transaction and return coin objects, used to build ptb.

• BuildRouterSwapParamsV3: The new parameter types is more clear and can support dynamic update latest package by aggregator.

• BuildRouterSwapParamsV2: The new parameter types is more clear and can support dynamic update latest package by aggregator.

• BuildRouterSwapParams: The old parameter types will continue to be supported.

BuildRouterSwapParamsV2

Required Params

Name	Type	Details
routers	RouterData Object	Returned by find router method
inputCoin	TransactionObjectArgument	This represents the input coin object. If you only support swaps with a fixed input, simply extract a fixed amount from the coin object. If you support fixed output, you need to extract an amount limited by the specified constraints from the coin object.
slippage	Number	A value between 0 and 1, representing the maximum allowed price slippage as a percentage. A value of 0.01 allows up to 1% price slippage. This parameter is crucial for protecting your assets in a rapidly changing market.
txb	Transaction	The programmable transaction builder.

Optional parameters

Name	Type	Details
partner	String	The partner address. Details about partner can be found here. You can now set the partner directly during client initialization. This parameter will soon be deprecated; please migrate your configuration.
refreshAllCoins	Boolean	If true, retrieves all coin types when setting up the swap; if false, uses the existing coins.
deepbookv3DeepFee	TransactionObjectArgument	The deep fee obejct argument for pay deep fee in deepbookv3 path. Currently, all pools that charge a swap fee are covered by Cetus.

Example

import { AggregatorClient } from "@cetusprotocol/aggregator-sdk"
import { Transaction } from '@mysten/sui/transactions';

const client = new AggregatorClient({})

const amount = new BN(1000000)
const from = "0x2::sui::SUI"
const target = "0x06864a6f921804860930db6ddbe2e16acdf8504495ea7481637a1c8b9a8fe54b::cetus::CETUS"

const router = await client.findRouters({
  from,
  target,
  amount,
  byAmountIn: true, // `true` means fix input amount, `false` means fix output amount
})

const txb = new Transaction()

const targetCoin = await client.routerSwap({
  router,
  txb,
  inputCoin,
  slippage: 0.01,
})

// you can use this target coin object argument to build your ptb.
client.transferOrDestoryCoin(
    txb,
    targetCoin,
    target
)

4. Why use v3 swap params?

1. Automatically merges duplicate paths

By combining the latest path merging and sorting algorithms, duplicate pools are consolidated, resulting in significant gas savings when dealing with multiple split paths.

2. Support dynamic use latest package version

The new parameters will pass the entire result from find router, which includes the latest contract address. However, this feature is only effective in SDK versions greater than 0.3.18.

In the future, we will continue to support the old version of swap parameters in both swap methods. However, upgrading to the new version will allow you to avoid mandatory SDK version updates.

3. Remove duplicate parameter byAmountIn

Now, the find router result will return the value based on the amount in, allowing you to directly obtain it from the find router result in the new swap parameters.

5. How to Migrate to Aggregator V3？

No code changes needed for basic usage:

• Use the latest sdk version. (version >= v1.1.1)

• Client initialization stays the same

• findRouter now returns V3 structure automatically

• fastRouterSwap and routerSwap accept the new format transparently

• Update display logic only if showing detailed RouterDataV3 to users

6. How to set providers?

1. You can ignore the providers parameters; the aggregator server will automatically set all usable providers based on the SDK version.

2. You can use the getAllProviders() method to retrieve all providers. Additionally, you can use the getProvidersIncluding() and getProvidersExcluding() methods to filter out specific providers or select only certain ones from the complete list.

import { getAllProviders, getProvidersExcluding } from "@cetusprotocol/aggregator-sdk"
const allProviders = getAllProviders()
console.log(allProviders)
[
      'CETUS',         'KRIYA',
      ...
      'MOMENTUM',      'STEAMM_OMM',
      'STEAMM_OMM_V2'
]
    
const providersExcept = getProvidersExcluding(["CETUS"])
console.log(providersExcept)
[
      'KRIYA',      'FLOWX',
      ...
      'STEAMM_OMM', 'STEAMM_OMM_V2'
]

1. While you can manually specify the providers you want to use, as the number of providers increases, manual configuration may lead to the omission of some providers, which could affect your price advantage."

7. Common Errors

1. How to fix error "All Pyth price nodes are unavailable. Cannot fetch price data. Please switch to or add new available Pyth nodes. Detailed error: aborted"？

Reason: Some providers, such as Headalpmm and Metastable, rely on Pyth oracle prices when building transactions. Currently, we have a default configuration that connects to Pyth's publicly available node. However, if you frequently build transactions, you may encounter limitations with the Pyth public nodes(https://hermes.pyth.network).

Solutions: We recommend setting up a private Pyth node interface as an additional backup. This will ensure uninterrupted access to HaedalHMM and Metastable, even if the public node experiences occasional downtime.

const client = new AggregatorClient({
  // endpoint, // If you do not have a exclusive aggregator api domain，just use cetus default aggregator endpoints.
  signer: wallet,
  client: suiClient,
  env: Env.Mainnet,
  pythUrls: ["YOUR_PYTH_URL", "ANOTHER_PYTH_URL"],
})

Another way, you can opt not to use Headalpmm and Metastable, but this will require you to manually configure the provider when find router.

const router = await client.findRouters({
  from,
  target,
  amount,
  byAmountIn: true,
  providers=["CETUS","SCALLOP","AFTERMATH","FLOWXV3","AFSUI","STEAMM","VOLO","KRIYAV3","KRIYA","ALPHAFI","FLOWX","BLUEMOVE","DEEPBOOKV3","BLUEFIN","HAEDAL","TURBOS","SPRINGSUI","STEAMM","METASTABLE","HAWAL","OBRIC"]
})