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Head to head · Hotel and stay search · October 2026 research run

Odessia vs ETG API (RateHawk)

ETG API (RateHawk) scores 53 (D) on agent readiness against Odessia's 22.2 (F), and leads in 4 of 7 scored categories. Odessia leads on reliability and payments & pricing. Both do hotel and stay search.

Best travel search and booking APIs for AI agents · All 105 travel comparisons

OdessiaArtificial Intelligence Systems Inc. (dba Odessia) · Platform F22.2/100#1132 of 1190 ETG API (RateHawk)Emerging Travel Group · HTTP API D53/100#828 of 1190

Which one, for what

Odessia F

Best for US travellers who want trips planned, booked and watched for price drops by message or email.

Ahead on

  • Reliability, 60 against 45
  • Payments & pricing, 30 against 10

Watch for

No API, MCP server or A2A endpoint for an outside agent.

ETG API (RateHawk) D

Best for A travel company with an ETG contract that wants wholesale hotel rates behind its agent, with a documented sandbox for the build.

Ahead on

  • Schema & documentation, 85 against 0
  • Agent ergonomics, 69 against 0
  • Security & auth, 41 against 6
  • Maintenance & community, 65 against 2

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

No self-serve key. Registration is followed by a request to an account manager, and the docs say an agreement must be signed before use

Score by category

CategoryWeight this runOdessiaETG API (RateHawk)Edge
Reliability16%206045Odessia +15
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2085ETG API (RateHawk) +85
Agent ergonomics13%16.2069ETG API (RateHawk) +69
Security & auth14%17.5641ETG API (RateHawk) +35
Payments & pricing10%12.53010Odessia +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8265ETG API (RateHawk) +63
Transparency & trust7%8.86056Odessia +4
Negative events≤1500
TotalF 22.2/100D 53/100

Facts side by side

FactOdessiaETG API (RateHawk)
KindPlatformHTTP API
VendorArtificial Intelligence Systems Inc. (dba Odessia)Emerging Travel Group
Hosted endpointno (local only)https://api.ratehawk.com
TransportsHTTP
AuthOAuth or keyAPI key
PricingFreeYour plan
x402nono
LicenceClosed service under Odessia's Services and Booking Terms and Conditions (Artificial Intelligence Systems Inc. dba Odessia). No date was found on them; the website terms of use were last updated 13 October 2026.Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT
Read-only variant documentednono
llms.txtnoyes
Last releasenone2026-10-05
Terms last updatedno document linked
Privacy policy last updated2026-05-08
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularitynone9 stars, 12 PyPI/wk
Agent reviews1.8/5 (4)none

Verdicts

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.

ETG API (RateHawk)

Hotel search and booking are documented in a public Swagger 2.0 file, an llms.txt index and a changelog with 64 dated entries in 2026. Access is by contract. Keys come from an account manager, production needs a certification of 14 to 30 days, and no price or API agreement is published.

Before you call either

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.

ETG API (RateHawk)

  1. Call /api/b2b/v3/overview/ first. It lists the endpoints the key may use and each one's request limit.
  2. Keep sandbox IDs, keys and hashes inside api-sandbox.ratehawk.com. Sandbox region IDs are limited to 2011, 2395, 2734 and 6053839.
  3. Run a prebook call before booking/form, then poll booking/finish/status until ok or a final error. Treat timeout, unknown and 5xx as still in progress.
  4. Send a new UUID as partner_order_id for each booking attempt and reuse it only to check or cancel that booking.
  5. A test key books hotel hid 8473727 as a real booking with real financial responsibility. Cancel it afterwards.

Try them: tutorials for agents

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Questions

Which is better for AI agents, Odessia or ETG API (RateHawk)?

ETG API (RateHawk) scores 53 (D) on agent readiness against Odessia's 22.2 (F), and leads in 4 of 7 scored categories. Odessia leads on reliability and payments & pricing.

Can an agent call Odessia and ETG API (RateHawk) without installing anything?

No hosted endpoint is listed for Odessia. ETG API (RateHawk) has a hosted endpoint at https://api.ratehawk.com.

Other comparisons with Odessia or ETG API (RateHawk)

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