Synapse Review
MIT-licensed, and little else readable
of 10
Synapse releases its monorepo under the MIT licence. Beyond that, almost nothing could be verified: the documentation homepage renders as an empty client-side application and the supported-chains page returns 404.
No money changes hands. This is a non-commercial project: no advertising, no sponsored placements, and no affiliate or referral links. Links to the services below earn us nothing. Every overall score is the plain average of the criteria shown on the page, so you can check the arithmetic yourself — see our rating methodology and how the site is funded.
Licence
MIT (sanguine monorepo)
Routes
Synapse Router, CCTP, RFQ
Fees
Not stated
Trust model
Not stated
Chains
Page returned 404
Scores
Each criterion carries equal weight. The overall score is the average of these 5 scores — (2.0 + 2.0 + 9.0 + 2.0 + 2.0) ÷ 5 = 3.4.
Pros
- MIT License on the sanguine monorepo, a recognised open-source licence
- Three transfer routes documented by name: Synapse Router, CCTP and RFQ
Cons
- No fee percentages published on any page we could reach
- No security or trust model discussion on the About page
- The supported-chains page returned 404
- The documentation homepage renders empty as a client-side application
- No audits page reached and no auditing firm named
- The synapse-contracts repository returned 404 for a licence lookup
What we could establish
The sanguine monorepo carries the MIT License, and the About page names three transfer routes: the Synapse Router, CCTP and RFQ. That is the extent of what could be read.
What we could not
The chains page returned 404. The documentation homepage renders as an empty client-side application with no server-side content. No fee figures, no security model and no audit record could be found on any reachable page.
This entry sits at the bottom of the ranking not because anything negative was found, but because a rubric built on published documentation has almost nothing to score. If Synapse publishes this information somewhere we did not reach, we will correct the review — the sources we used are listed below and the criteria are the same ones applied to every other bridge here.
How it compares
Chainflip
Apache-licensed, with documentation gaps
Squid
Charges nothing, documents little
deBridge
Per-chain flat fees, published in full
Hop Protocol
Every fee component published as a range
Stargate / LayerZero
Exact fee split, and a licence that expired unresolved
Celer cBridge
GPL-3.0 with a published fee ceiling
Wormhole
A named quorum: 13 of 19 guardians
Across
Optimistic security explained in one sentence
Axelar
Apache-licensed with the deepest audit archive
Sources
Scored from published primary sources rather than hands-on use. Every figure above comes from one of the pages below, on the date shown. Manufacturers change prices and specifications without notice — if something here no longer matches the source, tell us and we will correct it.
- 1.Synapse — about the protocol — checked
- 2.Synapse sanguine — LICENSE — checked
Frequently asked questions
What does Synapse charge?
No fee percentages were published on any page we could reach on 24 July 2026.
Is Synapse open source?
The sanguine monorepo carries the MIT License. The separate synapse-contracts repository returned 404 when we checked its licence.
Nothing here is financial advice. Editorial policy · How we score · How we're funded.