Keyboard-first approval UX for MCP elicitation prompts (y/n/N shortcuts)

Context

MCP servers that expose approval-gated mutating tools prompt the human operator via elicitation/create before every non-read-only tool call. In incident response, an operator may approve 20-50 of these prompts in a short window.

Current Claude Code UI renders the elicitation prompt as a dialog that:

• Steals focus
• Requires mouse-targeting the Approve/Decline button (or tab-navigating)
• Has no visible single-key shortcuts

Request

Keyboard-first shortcuts on the approval dialog:

• y → Approve (equivalent to clicking Approve with an empty justification)
• n → Decline
• N (shift-n) or ? → Decline and jump focus to the justification field so operator can type a reason

Justification: makes the 20-50-approvals incident case survivable. Today each prompt is ~3-5 seconds of interrupted flow; keyboard shortcuts would drop that to ~300ms per approval.

Related

• MCP spec elicitation/create: https://modelcontextprotocol.io/specification/basic/lifecycle#elicitation
• Our server-side tooling issue that motivates this: (internal, but happy to link a sanitized repro if useful)