diff --git a/.gitignore b/.gitignore
index 1162f24..214d05a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -53,6 +53,7 @@ build/
 # Optional npm cache directory
 .npm
 .vscode
+.yarn
 
 # Optional eslint cache
 .eslintcache
diff --git a/src/connections/networks/index.ts b/src/connections/networks/index.ts
index 5f73f7e..531efe9 100644
--- a/src/connections/networks/index.ts
+++ b/src/connections/networks/index.ts
@@ -9,14 +9,15 @@ export const subsocial = {
   icon: 'subsocial-parachain.svg',
   paraId: 2100,
   ipfs: 'https://ipfs.subsocial.network',
-  offchain: 'https://api.subsocial.network'
+  offchain: 'https://api.subsocial.network',
+  isTransferable: true
 }
 
 export const standalones: Networks = {
   kusama: {
     name: 'Kusama',
     ...resolveOnfinalityUrl('kusama'),
-    wsNode: 'wss://kusama-rpc.polkadot.io',
+    // wsNode: 'wss://kusama-rpc.polkadot.io',
     icon: 'kusama.svg',
     isMixedConnection: true,
     isTransferable: true
@@ -24,7 +25,7 @@ export const standalones: Networks = {
   polkadot: {
     name: 'Polkadot',
     ...resolveOnfinalityUrl('polkadot'),
-    wsNode: 'wss://rpc.polkadot.io',
+    // wsNode: 'wss://rpc.polkadot.io',
     icon: 'polkadot.svg',
     isMixedConnection: true,
     isTransferable: true
diff --git a/src/connections/networks/utils.ts b/src/connections/networks/utils.ts
index fcf9a7c..2548442 100644
--- a/src/connections/networks/utils.ts
+++ b/src/connections/networks/utils.ts
@@ -2,8 +2,8 @@ import { ONFINALITY_API_KEY } from '../../constant'
 
 export const resolveOnfinalityUrl = (chainName: string) => {
   return {
-    // node: `wss://${chainName}.api.onfinality.io/ws?apikey=${ONFINALITY_API_KEY}`,
-    node: `https://${chainName}.api.onfinality.io/rpc?apikey=${ONFINALITY_API_KEY}`,
+    node: `wss://${chainName}.api.onfinality.io/ws?apikey=${ONFINALITY_API_KEY}`,
+    // node: `https://${chainName}.api.onfinality.io/rpc?apikey=${ONFINALITY_API_KEY}`,
     wsNode: `wss://${chainName}.api.onfinality.io/ws?apikey=${ONFINALITY_API_KEY}`
   }
 }
\ No newline at end of file
diff --git a/src/services/fees/custom/SubsocialAdapter.ts b/src/services/fees/custom/SubsocialAdapter.ts
new file mode 100644
index 0000000..3b1dad3
--- /dev/null
+++ b/src/services/fees/custom/SubsocialAdapter.ts
@@ -0,0 +1,190 @@
+import { Storage } from '@acala-network/sdk/utils/storage'
+import { AnyApi, FixedPointNumber as FN } from '@acala-network/sdk-core'
+import { combineLatest, map, Observable } from 'rxjs'
+
+import { SubmittableExtrinsic } from '@polkadot/api/types'
+import { DeriveBalancesAll } from '@polkadot/api-derive/balances/types'
+import { ISubmittableResult } from '@polkadot/types/types'
+import {
+  createPolkadotXCMAccount,
+  createPolkadotXCMAsset,
+  createPolkadotXCMDest,
+  createRouteConfigs,
+  validateAddress
+} from '@polkawallet/bridge/utils'
+import { BalanceData, BasicToken, ChainId, chains, TransferParams } from '@polkawallet/bridge'
+import { BalanceAdapter, BalanceAdapterConfigs } from '@polkawallet/bridge/balance-adapter'
+import { ApiNotFound, InvalidAddress, TokenNotFound } from '@polkawallet/bridge/errors'
+import { BaseCrossChainAdapter } from '@polkawallet/bridge/base-chain-adapter'
+
+// eslint-disable-next-line @typescript-eslint/ban-ts-ignore
+// @ts-ignore
+chains.subsocial = {
+  id: 'subsocial',
+  display: 'Subsocial',
+  type: 'substrate',
+  icon: 'https://sub.id/images/subsocial.svg',
+  paraChainId: 2100,
+  ss58Prefix: 28
+}
+export const subsocialRouteConfigs = createRouteConfigs('subsocial' as any, [
+  {
+    to: 'hydradx',
+    token: 'SUB',
+    xcm: {
+      fee: { token: 'SUB', amount: '63199000' },
+    },
+  },
+])
+
+export const subsocialTokensConfig: Record<string, BasicToken> = {
+  SUB: { name: 'SUB', symbol: 'SUB', decimals: 10, ed: '100000000' },
+}
+
+// eslint-disable-next-line @typescript-eslint/explicit-module-boundary-types
+const createBalanceStorages = (api: AnyApi) => {
+  return {
+    balances: (address: string) =>
+      Storage.create<DeriveBalancesAll>({
+        api,
+        path: 'derive.balances.all',
+        params: [ address ],
+      }),
+  }
+}
+
+class SubsocialBalanceAdapter extends BalanceAdapter {
+  private storages: ReturnType<typeof createBalanceStorages>
+
+  constructor ({ api, chain, tokens }: BalanceAdapterConfigs) {
+    super({ api, chain, tokens })
+    this.storages = createBalanceStorages(api)
+  }
+
+  public subscribeBalance (
+    token: string,
+    address: string
+  ): Observable<BalanceData> {
+    const storage = this.storages.balances(address)
+
+    if (token !== this.nativeToken) {
+      throw new TokenNotFound(token)
+    }
+
+    return storage.observable.pipe(
+      map((data) => ({
+        free: FN.fromInner(data.freeBalance.toString(), this.decimals),
+        locked: FN.fromInner(data.lockedBalance.toString(), this.decimals),
+        reserved: FN.fromInner(data.reservedBalance.toString(), this.decimals),
+        available: FN.fromInner(
+          data.availableBalance.toString(),
+          this.decimals
+        ),
+      }))
+    )
+  }
+}
+
+class SubsocialBaseAdapter extends BaseCrossChainAdapter {
+  private balanceAdapter?: SubsocialBalanceAdapter
+
+  public async init (api: AnyApi) {
+    this.api = api
+
+    await api.isReady
+
+    const chain = this.chain.id as ChainId
+
+    this.balanceAdapter = new SubsocialBalanceAdapter({
+      chain,
+      api,
+      tokens: subsocialTokensConfig,
+    })
+  }
+
+  public subscribeTokenBalance (
+    token: string,
+    address: string
+  ): Observable<BalanceData> {
+    if (!this.balanceAdapter) {
+      throw new ApiNotFound(this.chain.id)
+    }
+
+    return this.balanceAdapter.subscribeBalance(token, address)
+  }
+
+  public subscribeMaxInput (
+    token: string,
+    address: string,
+    to: ChainId
+  ): Observable<FN> {
+    if (!this.balanceAdapter) {
+      throw new ApiNotFound(this.chain.id)
+    }
+
+    return combineLatest({
+      txFee: this.estimateTxFee({
+        amount: FN.ZERO,
+        to,
+        token,
+        address,
+        signer: address,
+      }),
+      balance: this.balanceAdapter
+        .subscribeBalance(token, address)
+        .pipe(map((i) => i.available)),
+    }).pipe(
+      map(({ balance, txFee }) => {
+        const tokenMeta = this.balanceAdapter?.getToken(token)
+        const feeFactor = 1.2
+        const fee = FN.fromInner(txFee, tokenMeta?.decimals).mul(
+          new FN(feeFactor)
+        )
+
+        // always minus ed
+        return balance
+          .minus(fee)
+          .minus(FN.fromInner(tokenMeta?.ed || '0', tokenMeta?.decimals))
+      })
+    )
+  }
+
+  public createTx (
+    params: TransferParams
+  ):
+    | SubmittableExtrinsic<'promise', ISubmittableResult>
+    | SubmittableExtrinsic<'rxjs', ISubmittableResult> {
+    if (!this.api) throw new ApiNotFound(this.chain.id)
+
+    const { address, amount, to, token } = params
+
+    if (!validateAddress(address)) throw new InvalidAddress(address)
+
+    const toChain = chains[to]
+
+    if (token !== this.balanceAdapter?.nativeToken) {
+      throw new TokenNotFound(token)
+    }
+
+    const accountId = this.api?.createType('AccountId32', address).toHex()
+    const paraChainId = toChain.paraChainId
+    const rawAmount = amount.toChainData()
+
+    return this.api?.tx.polkadotXcm.limitedReserveTransferAssets(
+      createPolkadotXCMDest(this.api, paraChainId),
+      createPolkadotXCMAccount(this.api, accountId),
+      createPolkadotXCMAsset(this.api, rawAmount, 'NATIVE'),
+      0,
+      this.getDestWeight(token, to)?.toString() as any
+    )
+  }
+}
+
+export class SubsocialAdapter extends SubsocialBaseAdapter {
+  constructor () {
+    // eslint-disable-next-line @typescript-eslint/ban-ts-ignore
+    // @ts-ignore
+    super(chains.subsocial, subsocialRouteConfigs, subsocialTokensConfig)
+  }
+}
+
diff --git a/src/services/fees/transfer.ts b/src/services/fees/transfer.ts
index ada54c4..364d6b7 100644
--- a/src/services/fees/transfer.ts
+++ b/src/services/fees/transfer.ts
@@ -73,6 +73,7 @@ async function getCrossChainTransferFee ({ from, token, to }: GetTransferFeePara
   try {
     const adapter = await getCrossChainAdapter(from, node)
     if (!adapter) return amount
+
     amount = await firstValueFrom(adapter.estimateTxFee({
       to: to as ChainId,
       address: dummyAccount,
diff --git a/src/services/fees/utils.ts b/src/services/fees/utils.ts
index d5ff89e..7717178 100644
--- a/src/services/fees/utils.ts
+++ b/src/services/fees/utils.ts
@@ -20,6 +20,7 @@ import { StatemineAdapter } from '@polkawallet/bridge/adapters/statemint'
 import { ZeitgeistAdapter } from '@polkawallet/bridge/adapters/zeitgeist'
 import { BaseCrossChainAdapter } from '@polkawallet/bridge/base-chain-adapter'
 import { firstValueFrom } from 'rxjs'
+import { SubsocialAdapter } from './custom/SubsocialAdapter'
 
 const transferAdapters: Record<string, { adapter: BaseCrossChainAdapter; chainName?: ChainId }> = {
   polkadot: {
@@ -105,6 +106,9 @@ const transferAdapters: Record<string, { adapter: BaseCrossChainAdapter; chainNa
   },
   zeitgeist: {
     adapter: new ZeitgeistAdapter()
+  },
+  subsocial: {
+    adapter: new SubsocialAdapter(),
   }
 }
 function getPolkawalletChainName(chain: string) {