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Google Maps Grounding Lite MCP for location search, weather, and routes via mcporter.
Passed 18 of 20 test cases with the skill, and 8 of 20 without it.
and 13 more in the full report
11 fixed9 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
I need to estimate travel time for a walking path between two addresses using the Maps grounding CLI tool. What travel mode parameter value should be passed?
| Checked | Without skill | With skill |
|---|---|---|
| Specifies WALK as the travelMode value. | Missed | Passed |
The instructions your model reads when the skill loads.
Google Maps Grounding Lite MCP provides AI-grounded location data. Experimental (pre-GA), free during preview.
gcloud beta services enable mapstools.googleapis.comexport GOOGLE_MAPS_API_KEY="YOUR_KEY"mcporter config add grounding-lite \
--url https://mapstools.googleapis.com/mcp \
--header "X-Goog-Api-Key=$GOOGLE_MAPS_API_KEY" \
--system
# Search places
mcporter call grounding-lite.search_places textQuery="pizza near Times Square NYC"
# Weather
mcporter call grounding-lite.lookup_weather location='{"address":"San Francisco, CA"}' unitsSystem=IMPERIAL
# Routes
mcporter call grounding-lite.compute_routes origin='{"address":"SF"}' destination='{"address":"LA"}' travelMode=DRIVE
# List tools
mcporter list grounding-lite --schema
test cases passed, vs 8 / 20 without
More skills from the same source and nearby in the registry, with their headline benchmark lift.