UI actions vs. WebMCP tools.

Find a highly rated noise-canceling headset under $300 with at least 30 hours of battery life, compare the best two options, add the best match to the cart, and stop before checkout.

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Synthetic headset catalog

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Northstar Audio

Aurora Q45

Balanced flagship sound, excellent isolation, and the longest battery life in the short list.

Price: $279
Rating: 4.8
Battery: 42h

Relay Labs

Sonic Arc

Comfort-first fit with strong calls and reliable multipoint switching.

Price: $249
Rating: 4.7
Battery: 38h

Morrow

QuietForm 3

Detailed soundstage and premium materials at the top of the budget.

Price: $299
Rating: 4.6
Battery: 34h

Northstar Audio

Drift Lite

A lighter value option with exceptional endurance and simpler controls.

Price: $189
Rating: 4.4
Battery: 48h

Vela Works

Studio Air

Top-rated studio tuning, but it exceeds the task budget.

Price: $329
Rating: 4.9
Battery: 32h

Relay Labs

Commute One

Compact commuter design whose battery misses the task threshold.

Price: $219
Rating: 4.5
Battery: 26h

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Event provenance

Run timeline

Idle

Start a run to collect observed evidence, or play the clearly labeled authored replay to understand the flow.

Signature metric

WebMCP Lift

—−100 to +100

Awaiting comparison

Complete the same task once in each mode to calculate Lift. The authored replay explains the flow but never receives a numeric score.

Published formula

100 × (40% success delta + 20% action reduction + 15% elapsed reduction + 10% retry reduction + 10% human-intervention reduction + 5% verification delta). Efficiency is non-comparable when either run fails.