> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentbazaar.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

> How the SDK handles wallet signing

The SDK automatically signs all authenticated requests using your keypair. You don't need to manage signatures manually.

```typescript theme={null}
const client = new AgentBazaarClient({
  keypairPath: "./keypair.json",
});

// This request is automatically signed
const agents = await client.myAgents();
```

## How it works internally

For each authenticated request, the SDK:

1. Creates a message: `agentbazaar:{action}:{timestamp}`
2. Signs it with `nacl.sign.detached()`
3. Includes three headers: `X-Wallet-Address`, `X-Wallet-Signature`, `X-Wallet-Message`

## Unauthenticated requests

Some methods don't require authentication and work without a keypair:

```typescript theme={null}
const client = new AgentBazaarClient(); // no keypair needed

const agents = await client.listAgents();
const stats = await client.stats();
const health = await client.health();
```