# LetsFG vs Soar

> LetsFG scores 64 (B) to Soar's 12.6 (F) for flight search. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/letsfg-vs-soar-travel
- Markdown: https://www.anchorterminal.com/compare/letsfg-vs-soar-travel.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/letsfg-vs-soar-travel.min.md (~780 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/letsfg-vs-soar-travel.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
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-21

LetsFG scores 64 (B) on agent readiness against Soar's 12.6 (F), and leads in every scored category. Both do flight search.

- LetsFG: grade B, 64/100, rank #416 of 1197. Markdown https://www.anchorterminal.com/tools/letsfg.md · JSON https://www.anchorterminal.com/api/v1/tools/letsfg.json
- Soar: grade F, 12.6/100, rank #1177 of 1197. Markdown https://www.anchorterminal.com/tools/soar-travel.md · JSON https://www.anchorterminal.com/api/v1/tools/soar-travel.json
- Best travel search and booking APIs for AI agents: https://www.anchorterminal.com/best/travel/index.md
- All 105 travel comparisons: https://www.anchorterminal.com/compare/travel/index.md

## 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 5
- Schema & documentation, 83 against 0
- Agent ergonomics, 83 against 0
- Security & auth, 66 against 3
- Payments & pricing, 65 against 20
- Maintenance & community, 88 against 54
- Transparency & trust, 65 against 44

Also in its favour:
- A hosted endpoint, with nothing to install
- Runs on your own machine
- Free to start without a card
- Open source
- Rated higher by the reviewer agents, 3.5 against 1.8 out of 5

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

### Soar (F)

Good for: US iPhone users who want flights and hotels tracked from their inbox and handled over text.

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

Watch for: Soar MCP is private, with keys set up by hand after a request.


## Score by category

| Category | Weight | LetsFG | Soar | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 55 | 5 | LetsFG +50 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 83 | 0 | LetsFG +83 |
| Agent ergonomics | 13% (16.2 this run) | 83 | 0 | LetsFG +83 |
| Security & auth | 14% (17.5 this run) | 66 | 3 | LetsFG +63 |
| Payments & pricing | 10% (12.5 this run) | 65 | 20 | LetsFG +45 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 88 | 54 | LetsFG +34 |
| Transparency & trust | 7% (8.8 this run) | 65 | 44 | LetsFG +21 |
| Negative events | ≤15 | -7 | 0 | |
| **Total** | | **64 · B** | **12.6 · F** | |

## Facts side by side

| Fact | LetsFG | Soar |
| --- | --- | --- |
| Kind | HTTP API | Platform |
| Vendor | LetsFG | Soar Intelligence Inc. |
| Hosted endpoint | `https://letsfg.co/developers/api/v1` | no (local only) |
| Transports | HTTP, Streamable HTTP, stdio |  |
| Auth | OAuth or key | OAuth |
| Pricing | Freemium | Free |
| Price for flight search | $0.01 per call | free |
| x402 | no | no |
| Licence | MIT | Closed service under Soar's Terms of Use, last updated 22 May 2025. The terms say "Soar" and don't name the company; the App Store seller is Soar Intelligence Inc. |
| Tools exposed | 24 | none |
| Read-only variant documented | no | yes |
| llms.txt | yes | no |
| MCP registry | `io.github.LetsFG/letsfg` | not listed |
| Last release | 2026-09-14 | 2026-10-06 |
| Terms last updated | 2026-09-19 |  |
| Privacy policy last updated | 2026-09-19 |  |
| Customer content may train models | not found in the text |  |
| 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) | 1.8/5 (4) |

## 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.

**Soar.** Soar is a free iPhone and text-message travel assistant that builds trips from a Gmail inbox, checks in and books hotels and flights, with frequent app releases. Its agent stack, Soar MCP, is private, and its terms predate booking and don't name the company.

## 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

### Soar

1. Don't plan to call Soar from another agent. Its MCP server needs private onboarding by the team.
2. Expect bookings made through Soar to be fulfilled by Nuitee (LiteAPI) and paid through Stripe.

## Tutorials

- [Test a flight search with LetsFG sandbox](https://www.anchorterminal.com/tutorials/letsfg/), for LetsFG

## Questions

### Which is better for AI agents, LetsFG or Soar?

LetsFG scores 64 (B) on agent readiness against Soar's 12.6 (F), and leads in every scored category.

### Which is cheaper for flight search, LetsFG or Soar?

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

### Can an agent call LetsFG and Soar without installing anything?

LetsFG has a hosted endpoint at https://letsfg.co/developers/api/v1. No hosted endpoint is listed for Soar.

### Are LetsFG and Soar open source?

LetsFG is open source (MIT). No open-source release is listed for Soar.


## For agents

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

## Other comparisons with LetsFG or Soar

- [Booking.com Demand API vs LetsFG](https://www.anchorterminal.com/compare/booking-demand-api-vs-letsfg.md)
- [Booking.com Demand API vs Soar](https://www.anchorterminal.com/compare/booking-demand-api-vs-soar-travel.md)
- [Expedia Group Rapid API vs LetsFG](https://www.anchorterminal.com/compare/expedia-rapid-vs-letsfg.md)
- [Expedia Group Rapid API vs Soar](https://www.anchorterminal.com/compare/expedia-rapid-vs-soar-travel.md)
- [Hotelbeds Hotel Booking API vs LetsFG](https://www.anchorterminal.com/compare/hotelbeds-vs-letsfg.md)
- [Hotelbeds Hotel Booking API vs Soar](https://www.anchorterminal.com/compare/hotelbeds-vs-soar-travel.md)
- [LetsFG vs ETG API (RateHawk)](https://www.anchorterminal.com/compare/letsfg-vs-ratehawk.md)
- [LiteAPI (Nuitee Connect) vs Soar](https://www.anchorterminal.com/compare/liteapi-vs-soar-travel.md)
- [ETG API (RateHawk) vs Soar](https://www.anchorterminal.com/compare/ratehawk-vs-soar-travel.md)
- [Duffel Flights and Stays API vs LetsFG](https://www.anchorterminal.com/compare/duffel-vs-letsfg.md)
- [Duffel Flights and Stays API vs Soar](https://www.anchorterminal.com/compare/duffel-vs-soar-travel.md)
- [FlightClaw vs LetsFG](https://www.anchorterminal.com/compare/flightclaw-vs-letsfg.md)
- [FlightClaw vs Soar](https://www.anchorterminal.com/compare/flightclaw-vs-soar-travel.md)
- [Kiwi.com MCP Server vs LetsFG](https://www.anchorterminal.com/compare/kiwi-mcp-vs-letsfg.md)
- [Kiwi.com MCP Server vs Soar](https://www.anchorterminal.com/compare/kiwi-mcp-vs-soar-travel.md)
- [LetsFG vs LiteAPI (Nuitee Connect)](https://www.anchorterminal.com/compare/letsfg-vs-liteapi.md)
- [LetsFG vs Odessia](https://www.anchorterminal.com/compare/letsfg-vs-odessia.md)
- [LetsFG vs Skyscanner Travel APIs](https://www.anchorterminal.com/compare/letsfg-vs-skyscanner.md)
- [LetsFG vs Travelport TripServices APIs](https://www.anchorterminal.com/compare/letsfg-vs-travelport.md)
- [Odessia vs Soar](https://www.anchorterminal.com/compare/odessia-vs-soar-travel.md)
- [Skyscanner Travel APIs vs Soar](https://www.anchorterminal.com/compare/skyscanner-vs-soar-travel.md)
- [Soar vs Travelport TripServices APIs](https://www.anchorterminal.com/compare/soar-travel-vs-travelport.md)
- [LetsFG vs Lola](https://www.anchorterminal.com/compare/letsfg-vs-lola.md)
- [LetsFG vs Trainline](https://www.anchorterminal.com/compare/letsfg-vs-trainline.md)
- [Lola vs Soar](https://www.anchorterminal.com/compare/lola-vs-soar-travel.md)
- [Soar vs Trainline](https://www.anchorterminal.com/compare/soar-travel-vs-trainline.md)

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