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# updateGlobalData

> Merge additional entries into the existing global data object.

[set-global-data]: /docs/server-sdks/reference/typescript/agents/agent-base/set-global-data

[ref-agentbase]: /docs/server-sdks/reference/typescript/agents/agent-base

Merge additional entries into the existing `global_data` object. Functionally
equivalent to [`setGlobalData()`][set-global-data] — both methods call
`.update()` on the internal dict so multiple callers (skills, dynamic config
callbacks, etc.) can each contribute keys without overwriting each other.
`updateGlobalData()` is the idiomatically named variant for call sites that
want to make the merge semantics explicit.

## **Parameters**

**`data`** `Record<string, unknown>` — required

Object of key/value pairs to merge into global data.

---

## **Returns**

[`AgentBase`][ref-agentbase] -- Returns `this` for method chaining.

## **Example**

```typescript {8}
import { AgentBase } from '@signalwire/sdk';

const agent = new AgentBase({ name: 'greenhouse', route: '/greenhouse' });
agent.setPromptText('You are a helpful plant care assistant.');

// Update global data with caller-specific information
const user = { name: 'Alice', tier: 'gold' };
agent.updateGlobalData({
  authenticated: true,
  user_name: user.name,
  user_tier: user.tier,
});

await agent.serve();
```

> Merge additional entries into the existing global data object.