Syslifters/gmapi-audit: Audit a Google Maps Platform API key against modern + legacy endpoints. · GitHub

A user-friendly CLI that checks whether a Google Maps Platform API key is valid and which APIs it can access.

It supports testing HTTP referrer / Origin restricted keys by letting you supply the headers that a browser would send.

cd gmapi-audit
python3 -m venv .venv
. .venv/bin/activate
pip install -U pip
pip install -e .

gmapi-audit run --api-key "YOUR_KEY"

# Test a browser-restricted key
gmapi-audit run --api-key "YOUR_KEY" --referer "https://example.com/" --origin "https://example.com"

# Only run a subset
gmapi-audit run --api-key "YOUR_KEY" --only places,routes

For each probe, the tool prints:

• Status: PASS/FAIL (colorized)
• PoC: a clickable URL when possible, otherwise a ready-to-run curl that includes headers
• Why: a best-effort explanation (invalid key vs API disabled vs billing vs restriction mismatch, etc.)

• IP restricted keys cannot be tested from an arbitrary machine (the source IP cannot be spoofed). The tool will explain this case.

• “Modern” vs “Legacy” depends on the API:

  • Places: modern Places API v1 (places.googleapis.com)
  • Routes & Route Matrix: modern Routes API v2 (routes.googleapis.com)
  • Static map rendering can be done with the modern Map Tiles API (2D Tiles) (tile.googleapis.com) but it is not a 1:1 “static image URL” API. See Roadmap tiles and Session tokens.
  • Street View Static has a modern tiles-based alternative: Street View Tiles.
  • Geocoding also has a newer REST surface at geocode.googleapis.com (v4beta). See GeocodeAddress.
  • Some products still only have the legacy maps.googleapis.com/maps/api/... endpoints.

• Gemini / Generative Language API: Some AIza... keys used for Maps/Firebase can also access Gemini endpoints if the API is enabled in the same Google Cloud project. This tool includes a probe for that behavior, as described in Truffle Security’s writeup.

• Pricing table intent: The pricing table is meant to illustrate potential cost impact if a key is leaked. Some probes (notably Places) intentionally request a richer field set to reflect potentially costly SKUs. Always verify against the official pricing list.