Expedia Group Rapid API vs Odessia

Expedia Group Rapid API

Expedia's lodging inventory with shop, price check, book, change and cancel in one API. Partner application and site review before production, no self-serve keys.

Odessia

Odessia is a free travel concierge that books as a registered travel agent, watches prices and award seats, and keeps a public status page with a clean record since July. No outside agent can call it, standing authorisations let it pay without asking each time, and no changelog was found.

Expedia Group Rapid API

1. Build the SHA-512 signature from key, secret and the current epoch seconds in that order, per request
2. Send Customer-Ip and the session headers the docs ask for, since fraud checks use them
3. Point everything at test.ean.com until the site review is through; the paths match api.ean.com
4. Follow the links in each response rather than building URLs; price check and book links carry tokens
5. Read the Rate-Limit-Minute-Remaining and Rate-Limit-Day-Remaining headers, since the docs publish no ceilings

Odessia

1. Don't plan to call Odessia from another agent. It answers only its signed-in owner on the web, by message or by email.
2. Check whether the owner has set a standing authorisation before assuming a booking will wait for approval.