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Head to head · Travel search · October 2026 research run

Kiwi.com MCP Server vs ETG API (RateHawk)

ETG API (RateHawk) scores 53 (D) on agent readiness against Kiwi.com MCP Server's 51.9 (D), and leads in 3 of 7 scored categories. Kiwi.com MCP Server leads on security & auth, payments & pricing and transparency & trust. Both do travel search.

Kiwi.com MCP ServerKiwi.com s.r.o. · MCP server D51.9/100#571 of 722 ETG API (RateHawk)Emerging Travel Group · HTTP API D53/100#554 of 722

Which one, for what

Kiwi.com MCP Server D

Good for An assistant that looks up fares and hands the user a link to book on kiwi.com, with no setup.

Ahead on

  • Security & auth, 54 against 41
  • Payments & pricing, 55 against 10
  • Transparency & trust, 66 against 56

Also in its favour

  • No key needed to call it

Watch for

Search only. Booking, payment, changes and cancellations happen on kiwi.com through the bookingUrl in each result

ETG API (RateHawk) D

Good 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 55
  • Maintenance & community, 65 against 13

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 runKiwi.com MCP ServerETG API (RateHawk)Edge
Reliability16%204545even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25585ETG API (RateHawk) +30
Agent ergonomics13%16.26669ETG API (RateHawk) +3
Security & auth14%17.55441Kiwi.com MCP Server +13
Payments & pricing10%12.55510Kiwi.com MCP Server +45
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81365ETG API (RateHawk) +52
Transparency & trust7%8.86656Kiwi.com MCP Server +10
Negative events≤1500
Total51.9 · D53 · D

Facts side by side

FactKiwi.com MCP ServerETG API (RateHawk)
KindMCP serverHTTP API
VendorKiwi.com s.r.o.Emerging Travel Group
Hosted endpointhttps://mcp.kiwi.comhttps://api.ratehawk.com
TransportsStreamable HTTPHTTP
AuthNoneAPI key
PricingFreeYour plan
x402nono
LicenceProprietary hosted service. The public repository holds only a README and has no licence fileProprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT
Tools exposed2none
Read-only variant documentedyesno
llms.txtnoyes
Last release2025-08-072026-10-05
Terms last updatedno date givenno document linked
Privacy policy last updated2026-09-072026-05-08
Customer content may train modelsnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularity12 stars9 stars, 12 PyPI/wk

Verdicts

Kiwi.com MCP Server

A keyless flight search with one typed, read-only tool, 47 filters and a booking link on every itinerary. It can't book, hold, change or cancel, and it has no published rate limits, changelog, terms or version. Each search returns 15 itineraries with no way to ask for fewer.

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

Kiwi.com MCP Server

  1. POST to https://mcp.kiwi.com itself. /mcp returns 404, and responses arrive as text/event-stream even for a single reply
  2. Send dates as dd/mm/yyyy and set currency, which defaults to EUR
  3. Check the error field of every result. A rejected input returns resultsCount 0 with isError false
  4. Narrow with price_to, max_sector_stopovers and sort. There is no limit parameter and each search returns 15 itineraries
  5. Give the user bookingUrl to book. Don't call feedback-to-devs with user data, because it sends free text to Kiwi.com

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.

Questions

Which is better for AI agents, Kiwi.com MCP Server or ETG API (RateHawk)?

ETG API (RateHawk) scores 53 (D) on agent readiness against Kiwi.com MCP Server's 51.9 (D), and leads in 3 of 7 scored categories. Kiwi.com MCP Server leads on security & auth, payments & pricing and transparency & trust.

Do Kiwi.com MCP Server and ETG API (RateHawk) need an API key?

Kiwi.com MCP Server needs no key. ETG API (RateHawk) needs an API key.

Can an agent call Kiwi.com MCP Server and ETG API (RateHawk) without installing anything?

Yes. Kiwi.com MCP Server has a hosted endpoint at https://mcp.kiwi.com and ETG API (RateHawk) at https://api.ratehawk.com.

Other comparisons with Kiwi.com MCP Server or ETG API (RateHawk)

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