diff --git a/src/auction.test.ts b/src/auction.test.ts
index 0c13c87..4f8239a 100644
--- a/src/auction.test.ts
+++ b/src/auction.test.ts
@@ -3,9 +3,8 @@ import { getConfig, getLaconic2Config } from './testing/helper';
 import { DENOM } from './constants';
 
 jest.setTimeout(30 * 60 * 1000);
-const { fee: laconic2Fee } = getLaconic2Config();
-
 const { chainId, restEndpoint, gqlEndpoint, privateKey, fee } = getConfig();
+const { fee: laconic2Fee } = getLaconic2Config();
 
 const auctionTests = (numBidders = 3) => {
   let registry: Registry;
@@ -26,7 +25,7 @@ const auctionTests = (numBidders = 3) => {
       const mnenonic = Account.generateMnemonic();
       const account = await Account.generateFromMnemonic(mnenonic);
       await account.init();
-      await registry.sendCoins({ denom: DENOM, amount: '100000', destinationAddress: account.address }, privateKey, laconic2Fee);
+      await registry.sendCoins({ denom: DENOM, amount: '20000000', destinationAddress: account.address }, privateKey, laconic2Fee);
       accounts.push({ address: account.address, privateKey: account.privateKey.toString('hex') });
     }
   });
@@ -50,8 +49,8 @@ const auctionTests = (numBidders = 3) => {
 
   test('Commit bids.', async () => {
     for (let i = 0; i < numBidders; i++) {
-      accounts[i].bid = await createBid(chainId, auctionId, accounts[i].address, `${10000000 + (i * 500)}aphoton`);
-      await registry.commitBid({ auctionId, commitHash: accounts[i].bid.commitHash }, accounts[i].privateKey, fee);
+      accounts[i].bid = await createBid(chainId, auctionId, accounts[i].address, `${10000000 + (i * 500)}${DENOM}`);
+      await registry.commitBid({ auctionId, commitHash: accounts[i].bid.commitHash }, accounts[i].privateKey, laconic2Fee);
     }
   });
 
@@ -75,7 +74,7 @@ const auctionTests = (numBidders = 3) => {
     expect(auction.status).toEqual('reveal');
 
     for (let i = 0; i < numBidders; i++) {
-      await registry.revealBid({ auctionId, reveal: accounts[i].bid.revealString }, accounts[i].privateKey, fee);
+      await registry.revealBid({ auctionId, reveal: accounts[i].bid.revealString }, accounts[i].privateKey, laconic2Fee);
     }
   });
 
diff --git a/src/index.ts b/src/index.ts
index 889bff8..e7399ed 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -216,7 +216,8 @@ export class Registry {
       ],
       fee);
 
-    return laconicClient.registry.decode(response.msgResponses[0]);
+    // TODO: Register type /cosmos.bank.v1beta1.MsgSendResponse for decoding response
+    return response;
   }
 
   /**
@@ -419,29 +420,35 @@ export class Registry {
   /**
    * Commit auction bid.
    */
-  async commitBid (params: MessageMsgCommitBid, privateKey: string, fee: Fee) {
-    let result;
+  async commitBid ({ auctionId, commitHash }: MessageMsgCommitBid, privateKey: string, fee: StdFee) {
     const account = new Account(Buffer.from(privateKey, 'hex'));
-    const sender = await this._getSender(account);
+    await account.init();
+    const laconicClient = await this.getLaconicClient(account);
+    const response: DeliverTxResponse = await laconicClient.commitBid(
+      account.address,
+      auctionId,
+      commitHash,
+      fee
+    );
 
-    const msg = createTxMsgCommitBid(this._chain, sender, fee, '', params);
-    result = await this._submitTx(msg, privateKey, sender);
-
-    return parseTxResponse(result);
+    return laconicClient.registry.decode(response.msgResponses[0]);
   }
 
   /**
    * Reveal auction bid.
    */
-  async revealBid (params: MessageMsgRevealBid, privateKey: string, fee: Fee) {
-    let result;
+  async revealBid ({ auctionId, reveal }: MessageMsgRevealBid, privateKey: string, fee: StdFee) {
     const account = new Account(Buffer.from(privateKey, 'hex'));
-    const sender = await this._getSender(account);
+    await account.init();
+    const laconicClient = await this.getLaconicClient(account);
+    const response: DeliverTxResponse = await laconicClient.revealBid(
+      account.address,
+      auctionId,
+      reveal,
+      fee
+    );
 
-    const msg = createTxMsgRevealBid(this._chain, sender, fee, '', params);
-    result = await this._submitTx(msg, privateKey, sender);
-
-    return parseTxResponse(result);
+    return laconicClient.registry.decode(response.msgResponses[0]);
   }
 
   /**
diff --git a/src/laconic-client.ts b/src/laconic-client.ts
index 6e8b343..1f2a854 100644
--- a/src/laconic-client.ts
+++ b/src/laconic-client.ts
@@ -12,11 +12,13 @@ import { Comet38Client } from '@cosmjs/tendermint-rpc';
 import { MsgCancelBondEncodeObject, MsgCreateBondEncodeObject, MsgRefillBondEncodeObject, MsgWithdrawBondEncodeObject, bondTypes, typeUrlMsgCancelBond, typeUrlMsgCreateBond, typeUrlMsgRefillBond, typeUrlMsgWithdrawBond } from './types/cerc/bond/message';
 import { Coin } from './proto2/cosmos/base/v1beta1/coin';
 import { MsgReserveAuthorityEncodeObject, MsgSetAuthorityBondEncodeObject, registryTypes, typeUrlMsgReserveAuthority, typeUrlMsgSetAuthorityBond } from './types/cerc/registry/message';
+import { MsgCommitBidEncodeObject, MsgRevealBidEncodeObject, auctionTypes, typeUrlMsgCommitBid, typeUrlMsgRevealBid } from './types/cerc/auction/message';
 
 export const laconicDefaultRegistryTypes: ReadonlyArray<[string, GeneratedType]> = [
   ...defaultRegistryTypes,
   ...bondTypes,
-  ...registryTypes
+  ...registryTypes,
+  ...auctionTypes
 ];
 
 function createDefaultRegistry (): Registry {
@@ -145,6 +147,44 @@ export class LaconicClient extends SigningStargateClient {
     return this.signAndBroadcast(signer, [createMsg], fee, memo);
   }
 
+  public async commitBid (
+    signer: string,
+    auctionId: string,
+    commitHash: string,
+    fee: StdFee | 'auto' | number,
+    memo = ''
+  ): Promise<DeliverTxResponse> {
+    const createMsg: MsgCommitBidEncodeObject = {
+      typeUrl: typeUrlMsgCommitBid,
+      value: {
+        signer,
+        auctionId,
+        commitHash
+      }
+    };
+
+    return this.signAndBroadcast(signer, [createMsg], fee, memo);
+  }
+
+  public async revealBid (
+    signer: string,
+    auctionId: string,
+    reveal: string,
+    fee: StdFee | 'auto' | number,
+    memo = ''
+  ): Promise<DeliverTxResponse> {
+    const createMsg: MsgRevealBidEncodeObject = {
+      typeUrl: typeUrlMsgRevealBid,
+      value: {
+        signer,
+        auctionId,
+        reveal
+      }
+    };
+
+    return this.signAndBroadcast(signer, [createMsg], fee, memo);
+  }
+
   public async setAuthorityBond (
     signer: string,
     bondId: string,
diff --git a/src/types/cerc/auction/message.ts b/src/types/cerc/auction/message.ts
new file mode 100644
index 0000000..87c4abe
--- /dev/null
+++ b/src/types/cerc/auction/message.ts
@@ -0,0 +1,25 @@
+import { EncodeObject, GeneratedType } from '@cosmjs/proto-signing';
+
+import { MsgCommitBidResponse, MsgCommitBid, MsgRevealBid, MsgRevealBidResponse } from '../../../proto2/cerc/auction/v1/tx';
+
+export const typeUrlMsgCommitBid = '/cerc.auction.v1.MsgCommitBid';
+export const typeUrlMsgCommitBidResponse = '/cerc.auction.v1.MsgCommitBidResponse';
+export const typeUrlMsgRevealBid = '/cerc.auction.v1.MsgRevealBid';
+export const typeUrlMsgRevealBidResponse = '/cerc.auction.v1.MsgRevealBidResponse';
+
+export const auctionTypes: ReadonlyArray<[string, GeneratedType]> = [
+  [typeUrlMsgCommitBid, MsgCommitBid],
+  [typeUrlMsgCommitBidResponse, MsgCommitBidResponse],
+  [typeUrlMsgRevealBid, MsgRevealBid],
+  [typeUrlMsgRevealBidResponse, MsgRevealBidResponse]
+];
+
+export interface MsgCommitBidEncodeObject extends EncodeObject {
+  readonly typeUrl: '/cerc.auction.v1.MsgCommitBid';
+  readonly value: Partial<MsgCommitBid>;
+}
+
+export interface MsgRevealBidEncodeObject extends EncodeObject {
+  readonly typeUrl: '/cerc.auction.v1.MsgRevealBid';
+  readonly value: Partial<MsgRevealBid>;
+}