diff --git a/README.md b/README.md
index e925206..e5fff5b 100644
--- a/README.md
+++ b/README.md
@@ -379,6 +379,68 @@ const contract = new HRC20('0x...00', ABI, wallet)
 // returns a number value.
 const name = await contract.decimals() // 18
 ```
+#### mint
+
+Mints an amount of tokens and transfers them to the account increasing the total supply.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC20 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC20('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.mint('0x...01', 10)
+```
+
+#### burn
+
+Destroys an amount of tokens from the account, reducing the total supply.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC20 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC20('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.burn(10)
+```
+
+#### burnFrom
+
+Destroys amount tokens from account, deducting from the caller’s allowance.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC20 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC20('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.burnFrom('0x...01', 10)
+```
 
 ## HRC721 API
 
@@ -649,6 +711,69 @@ const contract = new HRC721('0x...00', ABI, wallet)
 const name = await contract.name() // Blockcoders NFT
 ```
 
+#### mint
+
+Mints a token with tokenId and transfers it to the account.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC721 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC721('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.mint('0x...01', 1)
+```
+
+#### safeMint
+
+Safely mints a token with tokenId and transfers it to the account.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC721 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC721('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.mint('0x...01', 1)
+```
+
+#### burn
+
+Destroys tokenId. The caller must own tokenId or be an approved operator.
+
+```ts
+import { HttpProvider } from '@harmony-js/network'
+import { PrivateKey, HarmonyShards, HRC721 } from 'harmony-marketplace-sdk'
+import * as ABI from './abi.json'
+
+const wallet = new PrivateKey(
+  new HttpProvider(HarmonyShards.SHARD_0),
+  '45e497bd45a9049bcb649016594489ac67b9f052a6cdf5cb74ee2427a60bf25e'
+)
+
+// A contract instance
+const contract = new HRC721('0x...00', ABI, wallet)
+
+// returns a Harmony Transaction instance.
+const tx = await contract.burn(1)
+```
+
 ## HRC1155 API
 
 The `HRC1155` implements the abstract class [Base Token](#base-token).
diff --git a/src/contracts/hrc721.ts b/src/contracts/hrc721.ts
index e63f381..0eef833 100644
--- a/src/contracts/hrc721.ts
+++ b/src/contracts/hrc721.ts
@@ -103,14 +103,6 @@ export class HRC721 extends BaseToken {
     return this.call<string>('name', [], txOptions)
   }
 
-  public async increaseAllowance(spender: string, value: BNish, txOptions?: ITransactionOptions): Promise<Transaction> {
-    return this.send('increaseAllowance', [spender, value], txOptions)
-  }
-
-  public async decreaseAllowance(spender: string, value: BNish, txOptions?: ITransactionOptions): Promise<Transaction> {
-    return this.send('decreaseAllowance', [spender, value], txOptions)
-  }
-
   public mint(account: string, tokenId: BNish, txOptions?: ITransactionOptions): Promise<Transaction> {
     return this.send('mint', [account, tokenId], txOptions)
   }
diff --git a/src/tests/hrc721.spec.ts b/src/tests/hrc721.spec.ts
index d01f816..5eb55d9 100644
--- a/src/tests/hrc721.spec.ts
+++ b/src/tests/hrc721.spec.ts
@@ -406,52 +406,6 @@ describe('HRC721 Contract Interface', () => {
     })
   })
 
-  describe('increaseAllowance', () => {
-    it('should return the transaction', async () => {
-      const stub = sinon.stub(contract, 'send').withArgs('increaseAllowance', [TEST_ADDRESS_1, TOKEN_GOLD], TX_OPTIONS)
-      stub.resolves()
-
-      await contract.increaseAllowance(TEST_ADDRESS_1, TOKEN_GOLD, TX_OPTIONS)
-      expect(stub.calledOnce).to.be.true
-      expect(stub.callCount).to.be.equals(1)
-    })
-
-    it('should throw an error if spender is not provided', async () => {
-      expect(contract.increaseAllowance('', TOKEN_GOLD, TX_OPTIONS)).to.be.rejectedWith(Error)
-    })
-
-    it('should throw an error if value is not provided', async () => {
-      expect(contract.increaseAllowance(TEST_ADDRESS_1, '', TX_OPTIONS)).to.be.rejectedWith(Error)
-    })
-
-    it('should throw an error if params are not provided', async () => {
-      expect(contract.increaseAllowance('', '')).to.be.rejectedWith(Error)
-    })
-  })
-
-  describe('decreaseAllowance', () => {
-    it('should return the transaction', async () => {
-      const stub = sinon.stub(contract, 'send').withArgs('decreaseAllowance', [TEST_ADDRESS_1, TOKEN_GOLD], TX_OPTIONS)
-      stub.resolves()
-
-      await contract.decreaseAllowance(TEST_ADDRESS_1, TOKEN_GOLD, TX_OPTIONS)
-      expect(stub.calledOnce).to.be.true
-      expect(stub.callCount).to.be.equals(1)
-    })
-
-    it('should throw an error if spender is not provided', async () => {
-      expect(contract.decreaseAllowance('', TOKEN_GOLD, TX_OPTIONS)).to.be.rejectedWith(Error)
-    })
-
-    it('should throw an error if value is not provided', async () => {
-      expect(contract.decreaseAllowance(TEST_ADDRESS_1, '', TX_OPTIONS)).to.be.rejectedWith(Error)
-    })
-
-    it('should throw an error if params are not provided', async () => {
-      expect(contract.decreaseAllowance('', '')).to.be.rejectedWith(Error)
-    })
-  })
-
   describe('mint', () => {
     it('should return the transaction', async () => {
       const stub = sinon.stub(contract, 'send').withArgs('mint', [TEST_ADDRESS_1, TOKEN_GOLD], TX_OPTIONS)