Description

Custom agents are identified in lowercase (work-item, pr-writer, adversarial-review), and the agent record already carries that string as name. The prompt ribbon still titlecases the id for display, so the label does not match the identifier users configure and reference:

• work-item → Work-Item
• pr-writer → Pr-Writer

Source: packages/tui/src/component/prompt/index.tsx:1558

agentLabel: agent ? Locale.titlecase(agent.id) : undefined,

Locale.titlecase uppercases every word start (packages/tui/src/util/locale.ts):

export function titlecase(str: string) {
  return str.replace(/\b\w/g, (c) => c.toUpperCase())
}

There is no CLI setting to turn this off — the full settings reference has no agent-label or casing option — and renaming the agent file does not help, since the transform is applied to the id itself.

Proposed fix

Use agent.name instead of Locale.titlecase(agent.id). The API already returns the lowercase id as name for custom agents ("id": "work-item", "name": "work-item"), while built-ins keep their display names (General, Explore), so the one-line change fixes custom agents without affecting built-ins.

Related: #30372 fixed the same class of bug (CSS capitalize on custom agent identifiers) in the legacy app prompt selector.

Plugins

None.

OpenCode version

2.1.2

Steps to reproduce

1. Create ~/.config/opencode/agents/work-item.md with mode: primary.
2. Start the TUI and select the work-item agent (shift+tab).
3. The prompt ribbon reads Work-Item.

Expected behavior

The ribbon shows the agent identifier as defined: work-item.

Actual behavior

The ribbon shows Work-Item.

Operating System

Linux 7.2.6-76070206-generic (x86_64)

Terminal

Ghostty (TERM=xterm-ghostty, COLORTERM=truecolor)