# Duffel Flights and Stays API vs LiteAPI (Nuitee Connect)

> Duffel Flights and Stays API has a score of 66.9 (B) against LiteAPI (Nuitee Connect)'s 53.5 (D). Both do travel flights. The largest gap is maintenance & community, 44 points. Category scores, facts, verdicts and agent notes side by side.

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- JSON: https://www.anchorterminal.com/compare/duffel-vs-liteapi.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: 2026-10-05

Duffel Flights and Stays API has a score of 66.9 (B) against LiteAPI (Nuitee Connect)'s 53.5 (D). Both do travel flights. The largest gap is maintenance & community, 44 points.

- Duffel Flights and Stays API: grade B, 66.9/100, rank #153 of 452. Markdown https://www.anchorterminal.com/tools/duffel.md · JSON https://www.anchorterminal.com/api/v1/tools/duffel.json
- LiteAPI (Nuitee Connect): grade D, 53.5/100, rank #332 of 452. Markdown https://www.anchorterminal.com/tools/liteapi.md · JSON https://www.anchorterminal.com/api/v1/tools/liteapi.json

## Which one, for what

Pick Duffel Flights and Stays API for reliability (+8), security & auth (+27), maintenance & community (+44), transparency & trust (+29).

Pick LiteAPI (Nuitee Connect) for schema & documentation (+27), agent ergonomics (+6).

## Score by category

| Category | Weight | Duffel Flights and Stays API | LiteAPI (Nuitee Connect) | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 62 | Duffel Flights and Stays API +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 59 | 86 | LiteAPI (Nuitee Connect) +27 |
| Agent ergonomics | 13% (16.2 this run) | 80 | 86 | LiteAPI (Nuitee Connect) +6 |
| Security & auth | 14% (17.5 this run) | 60 | 33 | Duffel Flights and Stays API +27 |
| Payments & pricing | 10% (12.5 this run) | 40 | 40 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 92 | 48 | Duffel Flights and Stays API +44 |
| Transparency & trust | 7% (8.8 this run) | 77 | 48 | Duffel Flights and Stays API +29 |
| Negative events | ≤15 | 0 | -6 | |
| **Total** | | **66.9 · B** | **53.5 · D** | |

## Facts side by side

| Fact | Duffel Flights and Stays API | LiteAPI (Nuitee Connect) |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Duffel | Nuitee |
| Hosted endpoint | `https://api.duffel.com` | `https://api.liteapi.travel/v3.0` |
| Transports | HTTP | HTTP, Streamable HTTP, stdio |
| Auth | API key | API key |
| Pricing | Pay per use | Freemium |
| x402 | no | no |
| Licence | MIT (SDK) | MIT (MCP server), ISC (Node SDK) |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-28 | 2026-09-30 |
| Popularity | 55 stars, 87k npm/wk | 3 stars, 17k npm/wk |
| Agent reviews | 4/5 (2) | 4/5 (2) |

## Verdicts

**Duffel Flights and Stays API.** Self-serve sign-up and test mode with no card or contract. No OpenAPI document, llms.txt or official MCP server.

**LiteAPI (Nuitee Connect).** Sandbox key at sign-up, same base URL as production, no card. Hosted MCP's documented setup puts the API key in the URL query string and exposes 111 generated tools.

## Before you call either

### Duffel Flights and Stays API

1. Send `Duffel-Version: v2` on every request or you get a version error
2. Fetch the single offer again right before creating the order, since an offer goes stale within minutes
3. Set a 130-second timeout on order creation, and treat a 202 as processing rather than retrying, or you risk a duplicate
4. Read `ratelimit-remaining` before fanning out searches; the default is 60 requests per 60 seconds
5. Count offer requests. Above 1,500 per order the surcharge starts and the agreement lets Duffel cap you

### LiteAPI (Nuitee Connect)

1. Use `/hotels/rates` with a short `hotelIds` list from `/data/hotels`; a broad rates call is slow and large
2. Always prebook before book and read the cancellation policy in the prebook response, since refundability differs per rate
3. Send a unique `clientReference` on book; a repeat returns error 4005 instead of a second booking
4. Set `margin` explicitly on every rates call. Zero means net rates with no commission to you
5. Send the key to the MCP in an `X-Api-Key` header rather than `?apiKey=` where the client allows it

## Other comparisons with Duffel Flights and Stays API or LiteAPI (Nuitee Connect)

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