tripadvisor

# TripAdvisor Content API Search and retrieve hotel, restaurant, and attraction data from TripAdvisor. Ratings, rankings, reviews, photos, amenities, subratings, trip types, awards. **Base URL:** `https://api.content.tripadvisor.com/api/v1` **Rate limit:** 50 calls per second. **Monthly quota:** 5,000 API calls per month. Each curl request = 1 call. A full hotel lookup (search + details + reviews + photos) = 4 calls. Budget accordingly. Prefer search + details (2 calls) and only fetch reviews/photos when specifically needed. **API limits:** Up to 10 results per search. Up to 5 reviews and 5 photos per location. ## Authentication > **First-time setup gotcha:** TripAdvisor requires whitelisting your outbound IP at https://www.tripadvisor.com/developers before the key works. Without this, every call returns `User is not authorized to access this resource with an explicit deny`. This is the #1 first-time failure mode. **Whitelist before troubleshooting auth or quotas.** > > - **How to find your current IP:** `curl ifconfig.me` > - **Propagation:** changes take 1-5 minutes (AWS edge cache). > - **Multi-IP:** residential CGNAT, VPN exits, and different networks each need their own entry. > - **No Referer alternative:** the free tier requires IP whitelisting; HTTP Referer restriction is not available. > - **Verify which key is which:** the developer portal shows the last 4 chars only (e.g. "Ends in 11D7"), so you can confirm without exposing the secret. Set `TRIPADVISOR_API_...