# 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. Category scores, facts, verdicts…

- Canonical: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk
- Markdown: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.md (~2,400 tokens)
- Slim: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

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 Server: grade D, 51.9/100, rank #571 of 722. Markdown https://www.anchorterminal.com/tools/kiwi-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/kiwi-mcp.json
- ETG API (RateHawk): grade D, 53/100, rank #554 of 722. Markdown https://www.anchorterminal.com/tools/ratehawk.md · JSON https://www.anchorterminal.com/api/v1/tools/ratehawk.json

## 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

| Category | Weight | Kiwi.com MCP Server | ETG API (RateHawk) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 45 | 45 | even |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 55 | 85 | ETG API (RateHawk) +30 |
| Agent ergonomics | 13% (16.2 this run) | 66 | 69 | ETG API (RateHawk) +3 |
| Security & auth | 14% (17.5 this run) | 54 | 41 | Kiwi.com MCP Server +13 |
| Payments & pricing | 10% (12.5 this run) | 55 | 10 | Kiwi.com MCP Server +45 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 13 | 65 | ETG API (RateHawk) +52 |
| Transparency & trust | 7% (8.8 this run) | 66 | 56 | Kiwi.com MCP Server +10 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **51.9 · D** | **53 · D** | |

## Facts side by side

| Fact | Kiwi.com MCP Server | ETG API (RateHawk) |
| --- | --- | --- |
| Kind | MCP server | HTTP API |
| Vendor | Kiwi.com s.r.o. | Emerging Travel Group |
| Hosted endpoint | `https://mcp.kiwi.com` | `https://api.ratehawk.com` |
| Transports | Streamable HTTP | HTTP |
| Auth | None | API key |
| Pricing | Free | Your plan |
| x402 | no | no |
| Licence | Proprietary hosted service. The public repository holds only a README and has no licence file | Proprietary service under a signed partner agreement that is not published. The Python and PHP SDKs on GitHub are MIT |
| Tools exposed | 2 | none |
| Read-only variant documented | yes | no |
| llms.txt | no | yes |
| Last release | 2025-08-07 | 2026-10-05 |
| Terms last updated | no date given | no document linked |
| Privacy policy last updated | 2026-09-07 | 2026-05-08 |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 12 stars | 9 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.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.json, and with the fewest tokens: https://www.anchorterminal.com/compare/kiwi-mcp-vs-ratehawk.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "kiwi-mcp", "b": "ratehawk"}`. From a terminal: `anchor compare kiwi-mcp ratehawk`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/kiwi-mcp.json and https://www.anchorterminal.com/api/v1/tools/ratehawk.json

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