# `Codex.Events.McpServerStartupStatusUpdated`
[🔗](https://github.com/nshkrdotcom/codex_sdk/blob/v0.16.1/lib/codex/events.ex#L334)

Event emitted when app-server observes an MCP server startup state transition.

# `startup_status`

```elixir
@type startup_status() :: :starting | :ready | :failed | :cancelled | String.t()
```

# `t`

```elixir
@type t() :: %Codex.Events.McpServerStartupStatusUpdated{
  error: String.t() | nil,
  name: String.t(),
  status: startup_status()
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*