# \[AI\] New MCP tool: performance ceilings over a date range (CP, W′, power & HR bests)

**URL:** <https://tempo.discourse.group/t/ai-new-mcp-tool-performance-ceilings-over-a-date-range-cp-w-power-hr-bests/32>\
**Category:** What's New\
**Created:** [May 15, 2026, 9:08pm UTC](https://tempo.discourse.group/t/ai-new-mcp-tool-performance-ceilings-over-a-date-range-cp-w-power-hr-bests/32 "2026-05-15T21:08:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Marc](https://sea1.discourse-cdn.com/flex039/user_avatar/tempo.discourse.group/marc/32/56_2.png) [@Marc](https://tempo.discourse.group/u/Marc)\
**Post date:** [May 15, 2026, 9:08pm UTC](https://tempo.discourse.group/t/ai-new-mcp-tool-performance-ceilings-over-a-date-range-cp-w-power-hr-bests/32/1 "2026-05-15T21:08:26Z")

</div>

**What’s new**

The **Model Context Protocol (MCP) server** now exposes a **`get_performance_metrics`** tool. When your assistant (e.g. Claude) calls it, Tempo aggregates your workouts in the window you choose and returns **performance ceilings** , not just a profile snapshot: **Critical Power** and **W′** from the period power–duration curve, the **six standard power bests** (5s / 30s / 1min / 5min / 20min / 60min) with Watts and W/kg where available, **cardiovascular bests** (max HR, lowest resting HR, best VO₂max estimate, best 60s HR recovery), plus the period’s **estimated FTP** (and today’s manual FTP when present). You can narrow the slice with presets like **`last_3months`** (default), **`year_to_date`** , or **`all_time`** , or pass an explicit **`start_date` / `end_date`** pair (bare calendar dates need an IANA **`time_zone`** , same contract as other Tempo range tools). Optional filters **`workout_type`** (for example **`cycling`** ) and **`indoor_outdoor`** (`indoor`, `outdoor`, or `both`) let the model focus on the sessions that matter.

**Why it helps**

Once the connector is wired, you can ask about **current ceilings and bests in plain language** without exporting files or juggling separate “profile vs last block” explanations. **`get_athlete_information`** stays your “today snapshot”; **`get_performance_metrics`** answers “what did I actually show in this period?”—useful for block reviews, comparing indoor vs outdoor, or sanity-checking CP/FTP chatter against your real logged data.

**How to try it**

In Tempo on the web, MCP setup instructions live under **Settings → AI Assistants**.

**Example**

 ![Screenshot 2026-05-14 at 10.48.01 PM](https://us1.discourse-cdn.com/flex039/uploads/tempo/original/1X/fa53a80b7ca9b4d28f5dc62177cd4a4449b63482.jpeg)