# LetsFG vs Skyscanner Travel APIs

> LetsFG scores 64 (B) on agent readiness against Skyscanner Travel APIs's 45.6 (E), and leads in every scored category. Both do travel flights. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/letsfg-vs-skyscanner
- Markdown: https://www.anchorterminal.com/compare/letsfg-vs-skyscanner.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/letsfg-vs-skyscanner.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/letsfg-vs-skyscanner.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

LetsFG scores 64 (B) on agent readiness against Skyscanner Travel APIs's 45.6 (E), and leads in every scored category. Both do travel flights.

- LetsFG: grade B, 64/100, rank #287 of 722. Markdown https://www.anchorterminal.com/tools/letsfg.md · JSON https://www.anchorterminal.com/api/v1/tools/letsfg.json
- Skyscanner Travel APIs: grade E, 45.6/100, rank #655 of 722. Markdown https://www.anchorterminal.com/tools/skyscanner.md · JSON https://www.anchorterminal.com/api/v1/tools/skyscanner.json

## Which one, for what

### LetsFG (B)

Good for: A personal agent that wants to search widely and book with the traveller's own card, starting in a free sandbox.

Ahead on:
- Reliability, 55 against 35
- Schema & documentation, 83 against 56
- Agent ergonomics, 83 against 50
- Security & auth, 66 against 48
- Payments & pricing, 65 against 25
- Maintenance & community, 88 against 60
- Transparency & trust, 65 against 52

Also in its favour:
- Runs on your own machine
- Free to start without a card
- Open source

Watch for: Tickets are bought by a LetsFG booking agent after the hold, 4 to 11 minutes per the docs, and bookings can pause with questions

### Skyscanner Travel APIs (E)

Good for: An established travel site or app with a large audience that wants metasearch prices across flights, hotels and car hire and is content to send users to suppliers to book.

Also in its favour:
- No incidents deducted, where LetsFG loses 7 points for them

Watch for: Keys are issued only after an application review and a commercial agreement, with a stated minimum of 100,000 monthly active users


## Score by category

| Category | Weight | LetsFG | Skyscanner Travel APIs | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 35 | LetsFG +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 83 | 56 | LetsFG +27 |
| Agent ergonomics | 13% (16.2 this run) | 83 | 50 | LetsFG +33 |
| Security & auth | 14% (17.5 this run) | 66 | 48 | LetsFG +18 |
| Payments & pricing | 10% (12.5 this run) | 65 | 25 | LetsFG +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 88 | 60 | LetsFG +28 |
| Transparency & trust | 7% (8.8 this run) | 65 | 52 | LetsFG +13 |
| Negative events | ≤15 | -7 | 0 | |
| **Total** | | **64 · B** | **45.6 · E** | |

## Facts side by side

| Fact | LetsFG | Skyscanner Travel APIs |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | LetsFG | Skyscanner Limited |
| Hosted endpoint | `https://letsfg.co/developers/api/v1` | `https://partners.api.skyscanner.net` |
| Transports | HTTP, Streamable HTTP, stdio | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Free |
| Price for travel flights | $0.01 per call | free |
| x402 | no | no |
| Licence | MIT | Proprietary service. The API terms are in the partner contract and are not public |
| Tools exposed | 24 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| MCP registry | `io.github.LetsFG/letsfg` | not listed |
| Last release | 2026-09-14 | 2026-10-01 |
| Terms last updated | 2026-09-19 | no document linked |
| Privacy policy last updated | 2026-09-19 | no date given |
| Customer content may train models | not found in the text | yes |
| Terms restrict automated access | yes |  |
| 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 | not found in the text |  |
| Popularity | 2.1k stars, 157 npm/wk, 260 PyPI/wk | none |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**LetsFG.** Hosted MCP with OAuth 2.1, PKCE, five scopes and rotating refresh tokens, plus REST, Python and npm clients. Tickets are bought by a LetsFG booking agent after the hold, 4 to 11 minutes per the docs, and bookings can pause with questions.

**Skyscanner Travel APIs.** Thirteen documented search APIs cover flights, hotels and car hire behind one `x-api-key` header, with default rate limits published per endpoint and no usage fee. Access needs an approved application, an audience above 100,000 monthly users and a commercial agreement, and the usage guidelines bar live-price calls made without a user action. Booking happens on supplier sites.

## Before you call either

### LetsFG

1. Start on `/v1/sandbox/` with no key; the booking states, questions and timings match production
2. After `book_flight`, poll `get_flight_booking` every 20 to 30 seconds and answer questions before `expires_at_ms`; an unanswered price change fails the booking and releases the hold
3. Honour `retry_after_seconds` on a 429. Over MCP the limit is 10 searches per 10 minutes and 100 a day, and early retries lengthen the pause
4. Fetch results with `get_flight_results` and the `search_id` rather than searching again, which spends allowance
5. Send the same `idempotency_key` when retrying a booking after a timeout
6. Treat a 410 as a retired route and read the replacement path in its body

### Skyscanner Travel APIs

1. Send the key in the `x-api-key` header on every call to `https://partners.api.skyscanner.net`. CORS is not supported, so call from a server
2. Create a live search only when a user has given origin, destination and exact dates. Use the indicative price endpoints for open-ended questions
3. Poll `/search/poll/{sessionToken}` until `status` is `RESULT_STATUS_COMPLETE`, and replace earlier results only when `action` is `RESULT_ACTION_REPLACED`
4. Start a new session when a poll returns 400. Flight session tokens last about an hour and hotel sessions at most 15 minutes
5. Pass each `deepLink` to the traveller unchanged, since altered encoding breaks Impact tracking, and never put personal data in `subid2`

## Questions

### Which is better for AI agents, LetsFG or Skyscanner Travel APIs?

LetsFG scores 64 (B) on agent readiness against Skyscanner Travel APIs's 45.6 (E), and leads in every scored category.

### Which is cheaper for travel flights, LetsFG or Skyscanner Travel APIs?

Skyscanner Travel APIs, at free against $0.01 per call for LetsFG. These are the vendors' published prices for the job.

### Do LetsFG and Skyscanner Travel APIs need an API key?

LetsFG takes an API key or an OAuth sign-in. Skyscanner Travel APIs needs an API key.

### Can an agent call LetsFG and Skyscanner Travel APIs without installing anything?

Yes. LetsFG has a hosted endpoint at https://letsfg.co/developers/api/v1 and Skyscanner Travel APIs at https://partners.api.skyscanner.net.

### Are LetsFG and Skyscanner Travel APIs open source?

LetsFG is open source (MIT). No open-source release is listed for Skyscanner Travel APIs.


## For agents

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

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