# ModelInputItem

**Kind:** Type

**Source:** [`atloria-monorepo/libs/agent-core/src/runtime/model-provider-interface.ts`](https://github.com/sherkety/atloria/blob/main/atloria-monorepo/libs/agent-core/src/runtime/model-provider-interface.ts#L56)

A single item in the conversation input.
Intentionally simple — providers map to their API's format internally.

## Definition

```ts
| { role: 'user'; content: string }
  | { role: 'assistant'; content: string; toolCalls?: ModelToolCall[] }
  | { role: 'tool'; toolCallId: string; content: string }
```