# Interact with a smart contract with Taquito
## Install Taquito
```bash
npm install @taquito/taquito
npm install @taquito/signer
```
### Import the library
```javascript
import { TezosToolkit } from '@taquito/taquito';
import { InMemorySigner} from '@taquito/signer';
```
Instantiate the library with the same contracts rpc
```javascript
const Tezos = new TezosToolkit('https://YOUR_PREFERRED_RPC_URL');
```
Maybe you have an error and need to install 'stream-browserify'.
```bash
npm install 'stream-browserify'
```
and add "stream" to vue.config.js file.
\
### Sign configuration
> You get your private key from your wallet, in settings.
```javascript
Tezos.setProvider({
signer: new InMemorySigner('YOUR_PRIVATE_KEY'),
});
```
### Interact with the smart contract
> You need the contract address. Example: *KT1NvFHBQv3Zkv3wmWYqYpWWR8rMdd5pUG14* .
Send a method
```javascript
Tezos.contract
.at('YOUR CONTRACT ADDRESS')
.then((contract) => {
return contract.methods.YOUR_METHOD(PARAMS).send();
});
```
Get a op hash confimation
```javascript
Tezos.contract
.at('YOUR CONTRACT ADDRESS')
.then((contract) => {
return contract.methods.YOUR_METHOD(PARAMS).send();
})
.then((op) => {
console.log(`Waiting for ${op.hash} to be confirmed...`);
return op.confirmation(1).then(() => op.hash);
});
```
Catch error
```javascript
Tezos.contract
.at('YOUR CONTRACT ADDRESS')
.then((c) => {
return c.methods.YOUR_METHOD(PARAMS).send();
})
.then((op) => {
console.log(`Waiting for ${op.hash} to be confirmed...`);
return op.confirmation(1).then(() => op.hash);
})
.then((hash) => console.log(`Operation injected: https://kathmandu.tzstats.com/${hash}`))
.catch((error) => console.log(`Error: ${JSON.stringify(error, null, 2)}`));
```
Inspect the contract methods and data types
```javascript
Tezos.contract
.at('YOUR CONTRACT ADDRESS')
.then((c) => {
let methods = c.parameterSchema.ExtractSignatures();
console.log(JSON.stringify(methods, null, 2));
})
.catch((error) => console.log(`Error: ${error}`));
```
## Reference Links
*
---
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