# createChunkId

**Kind:** Function

**Source:** [`atloria-monorepo/libs/agent-core/src/semantic/types.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/libs/agent-core/src/semantic/types.ts#L79)

Create a deterministic chunk ID from file path, start line, and content.
Returns first 12 hex chars of a SHA-256 hash.

## Signature

```ts
function createChunkId(file: string, startLine: number, content: string): string
```

## Parameters

| Name | Type |
|---|---|
| `file` | `string` |
| `startLine` | `number` |
| `content` | `string` |

**Returns:** `string`