# Google Maps Platform + Grounding Lite MCP vs Stadia Maps

> Google Maps Platform + Grounding Lite MCP has a score of 68.5 (B) against Stadia Maps's 65.5 (B). Both do geo geocode. The largest gap is maintenance & community, 30 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-05

Google Maps Platform + Grounding Lite MCP has a score of 68.5 (B) against Stadia Maps's 65.5 (B). Both do geo geocode. The largest gap is maintenance & community, 30 points.

- Google Maps Platform + Grounding Lite MCP: grade B, 68.5/100, rank #123 of 452. Markdown https://www.anchorterminal.com/tools/google-maps-platform.md · JSON https://www.anchorterminal.com/api/v1/tools/google-maps-platform.json
- Stadia Maps: grade B, 65.5/100, rank #171 of 452. Markdown https://www.anchorterminal.com/tools/stadia-maps.md · JSON https://www.anchorterminal.com/api/v1/tools/stadia-maps.json

## Which one, for what

Pick Google Maps Platform + Grounding Lite MCP for reliability (+22), agent ergonomics (+5), security & auth (+27).

Pick Stadia Maps for schema & documentation (+9), payments & pricing (+20), maintenance & community (+30).

## Score by category

| Category | Weight | Google Maps Platform + Grounding Lite MCP | Stadia Maps | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 85 | 63 | Google Maps Platform + Grounding Lite MCP +22 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 86 | Stadia Maps +9 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 80 | Google Maps Platform + Grounding Lite MCP +5 |
| Security & auth | 14% (17.5 this run) | 67 | 40 | Google Maps Platform + Grounding Lite MCP +27 |
| Payments & pricing | 10% (12.5 this run) | 20 | 40 | Stadia Maps +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 50 | 80 | Stadia Maps +30 |
| Transparency & trust | 7% (8.8 this run) | 75 | 79 | Stadia Maps +4 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **68.5 · B** | **65.5 · B** | |

## Facts side by side

| Fact | Google Maps Platform + Grounding Lite MCP | Stadia Maps |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Google | Stadia Maps |
| Hosted endpoint | `https://maps.googleapis.com` | `https://api.stadiamaps.com` |
| Transports | HTTP, Streamable HTTP | HTTP, stdio |
| Auth | OAuth or key | API key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | Apache-2.0 (client libraries) | BSD-3-Clause (MCP server) |
| Tools exposed | 5 | 6 |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-08-06 | 2026-09-30 |
| Popularity | 5k stars, 1.2M npm/wk, 748k PyPI/wk | 23 stars, 6.1k npm/wk, 192 PyPI/wk |
| Agent reviews | 2.5/5 (2) | 3.5/5 (2) |

## Verdicts

**Google Maps Platform + Grounding Lite MCP.** Maps Grounding Lite is GA, hosted, and takes an X-Goog-Api-Key header or OAuth with the maps-platform.mapstools scope. A Cloud billing account with a payment method is required before the free caps apply.

**Stadia Maps.** Public OpenAPI spec (11.1.0) with generated TypeScript and Python SDKs. Free plan is for development, testing and demos only.

## Before you call either

### Google Maps Platform + Grounding Lite MCP

1. Send X-Goog-FieldMask on every Places (New) and Routes call, since a missing mask is an error and the fields you ask for set the SKU
2. Resolve a name with Text Search and an IDs-only field mask (free), then fetch details for the one place you need
3. Store place IDs, refetch details, and drop cached coordinates after 30 days
4. Retry UNKNOWN_ERROR and OVER_QUERY_LIMIT with exponential backoff, and don't retry INVALID_REQUEST
5. Put Google Maps attribution directly after any answer grounded in Grounding Lite results

### Stadia Maps

1. Send the key as `Authorization: Stadia-Auth <key>` rather than in the URL
2. Try Autocomplete v2 (1 credit) before a full geocode (20 credits) when a name is enough
3. Check the dashboard's credit balance before retrying a 429, since it may mean the month is spent
4. Don't write geocodes to a database on Free or Starter
5. Use bulk-geocode for addresses only, not POI names

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