@nicknisi/pi-turn-timer

Shows how long a complete run took — from the moment you send a message until the agent settles and is awaiting your next message — as a dim one-line row rendered below the response, similar to Claude Code's per-turn elapsed timer. It exists because pi has no built-in per-run timing display. A run that spans multiple LLM responses and tool-call rounds still produces a single timer row.

What it adds

• UI: a custom transcript entry renderer that draws a dim text row of the form · 12.3s (or · 1m 23s for ≥ 60s) after each completed turn.
• Events hooked: agent_start (records the start timestamp), agent_settled (computes elapsed time and appends the entry). agent_settled fires only once the agent is idle and won't continue automatically (no retry/compaction/follow-up remaining), so the timer covers the whole run.
• Custom entry type: turn-duration, with data shape { seconds: number }.

No slash commands, tools, keybindings, or overlays. No configuration.

Behavior details

• The entry is a custom transcript entry that does not participate in LLM context, so it never pollutes the conversation.
• /copy reads only assistant message text, so it never picks up the timer rows.
• Timing starts from Date.now() on agent_start. Elapsed time is computed with Date.now() at agent_settled.
• If agent_settled fires without a prior agent_start (e.g. extension loaded mid-run), the event is ignored.
• Duration formatting: < 60s → Ns.s (one decimal, e.g. 0.8s); ≥ 60s → Mm Ss (e.g. 1m 23s).

Configuration

None. No config files, no options, no environment variables.

Dependencies

• @earendil-works/pi-coding-agent (peer) — ExtensionAPI: registerEntryRenderer, on, appendEntry.
• @earendil-works/pi-tui (peer) — Text component used to render the row.

No npm runtime dependencies, no workspace deps.

Caveats

• Depends on pi extension internals: registerEntryRenderer, appendEntry, and the agent_start / agent_settled / ui_prompt_* event names. A pi release that renames these APIs or events breaks the extension.
• Relies on the theme's "dim" foreground color existing; unusual themes could render the row differently.
• Uses wall-clock time (Date.now()) minus time spent waiting on ctx.ui prompts (ui_prompt_start/ui_prompt_end, pi ≥0.85). Waits that don't go through ctx.ui are still counted.
• Cancelled runs (agent_settled aborted, pi ≥1.1) are labelled (aborted); older pi shows them unlabelled.
• No platform-specific behavior; works anywhere pi runs.

Install

pi install /Users/nicknisi/Developer/pi-extensions/packages/turn-timer