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

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Add board member

> Add an existing Trello member to a board.

`trello.addBoardMember` adds an existing member to one board.

```ts automations/add-trello-board-member.automation.ts theme={null}
import { automation, onDashboardRun } from "automate.ax"
import { trello } from "automate.ax/trello"

export default automation("Add Trello board member", () => {
  onDashboardRun({ title: "Add Trello board member" })
  trello.addBoardMember({
    board: "board-id",
    memberId: "member-id",
    role: "normal",
  })
})
```

Provide `board` as an ID, short link, or standard board URL and a stable `memberId`. `role` accepts `"admin"`, `"normal"`, or `"observer"` and defaults to `"normal"`. Optional `allowBillableGuest` permits a Workspace administrator to add a multi-board guest. Optional second argument `{ account }` selects a Trello binding.

Returns `Signal<{ boardId: string; memberId: string; role: "admin" | "normal" | "observer" }>`.