Axelar Review
Apache-licensed with the deepest audit archive
of 10
Axelar explains its security as a proof-of-stake validator set using threshold cryptography, publishes over forty audit reports from nine named firms, and releases under Apache 2.0. Its fees are described structurally rather than as figures.
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Licence
Apache License 2.0
Trust model
PoS validators, threshold cryptography, key shares weighted by stake
Fees
Network base fee + execution fee; no percentages published
Chains
80+ stated
Audits
40+ reports, 9+ named firms
Scores
Each criterion carries equal weight. The overall score is the average of these 5 scores — (5.0 + 9.0 + 10.0 + 9.0 + 10.0) ÷ 5 = 8.6.
Pros
- Trust model explained concretely: PoS validators holding key shares under a multi-party cryptography scheme
- Key shares allocated in proportion to staked AXL, so validator weight is explicit
- Apache License 2.0 — a recognised open-source licence
- Over forty audit reports published, by Ackee Blockchain, Certik, Cure53, NCC Group, Halborn, OtterSec and others
- States 80+ blockchains and 75+ validators
Cons
- Fees are described as a network base fee plus an execution fee, with no percentages published
- The base fee is fixed per chain pair but the schedule is not shown
- The homepage claim of zero exploits is a marketing assertion rather than a documented record
The security explanation is a real one
Axelar describes validators participating in consensus as on any proof-of-stake chain, each holding many key shares under a multi-party cryptography scheme where the signing key is split into pieces, with share count dictated by staked AXL. That is a specific, checkable description of who can move funds and under what threshold — the thing this criterion exists to find.
An audit archive rather than an audit claim
Over forty PDFs spanning 2021 to 2025 sit in the public audits repository, the majority from Ackee Blockchain, alongside Certik, Cure53, Commonprefix, Informal Systems, Least Authority, NCC Group, Halborn and OtterSec. Depth and named firms together put this at the top of the category.
Fees are the gap
Pricing is explained as a network base fee fixed by chain pair plus a variable execution fee depending on the complexity of the call. Neither is published as a number, so a user cannot compare cost before quoting.
How it compares
Synapse
MIT-licensed, and little else readable
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
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.Axelar — gas service pricing — checked
- 2.Axelar — how it works (validators and key shares) — checked
- 3.Axelar core — LICENSE — checked
- 4.Axelar — public audit archive — checked
Frequently asked questions
How does Axelar secure transfers?
Through a proof-of-stake validator set using threshold cryptography: the signing key is split into shares distributed among validators in proportion to their staked AXL.
Is Axelar open source?
Yes. The axelar-core repository carries the Apache License 2.0.
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