Symbiosis
Cross-chain swap and bridge protocol that routes transfers through its own S-chain and Octopool liquidity.
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Symbiosis key facts
| Category | Cross-chain bridge |
|---|---|
| Chains | EVM chains, TON, Tron, Bitcoin and others |
| Platforms | Web, API, SDK |
| Custody | Non-custodial |
| Fees | Source gas paid by user; S-chain and destination gas withheld from the swap in stablecoin equivalent |
| Chains | 50+ chains |
| Security audits | Omniscia, SlowMist, Zokyo, Decurity, HashCloak |
| Token | SIS |
| US availability | Not available: terms exclude US residents, citizens and US-incorporated entities |
SIS token
- Price
- $0.0163 -1.3% 24h
- Market cap
- $1.6M
- Fully diluted value
- $1.6M
- 30-day change
- -2.7%
Market data: CoinGecko, updated Nov 9, 2026. Educational content, not financial advice.
What is Symbiosis?
Symbiosis is a cross-chain swap and bridge protocol that routes each transfer through its S-chain using sTokens and Octopool liquidity. Gas on the S-chain and destination is withheld from the swap in a stablecoin equivalent. Its site lists swaps across 50+ chains.
How Symbiosis works
Take a swap of MATIC on Polygon for UNI on Ethereum.
Symbiosis first swaps your MATIC into a transit token (USDC, WETH or WBTC) through DEX aggregators on Polygon. A matching sToken is then minted on the Symbiosis Host Chain and passes through an Octopool there, and the transit token is released on Ethereum and swapped into UNI, again through DEX aggregators. The app computes routes through all three transit tokens and shows you the most efficient one.
The off-chain half is the Symbiosis Relayers Network, a peer-to-peer set of relayer nodes. When a Symbiosis contract emits an Oracle request, relayers validate the calldata, sign the next transaction with their MPC key and submit it on the next chain. The network is secured through Symbiosis PoS Staking and Symbiotic Staking. A newer flow, not yet live on every chain, locks the transit asset in a Depository contract on the destination, and a permissionless Solver service can retry the final swap. If no route reaches your minimum output, the transit token is sent to you instead.
How to start with Symbiosis
- You need a self-custody wallet on the source chain and enough of that chain's gas token for one transaction.
- Open app.symbiosis.finance/swap, pick the source and destination chains and tokens, and read the To receive figure, which already includes liquidity provider and cross-chain fees.
- Your slippage tolerance sets the floor: with 2% slippage, a quote of 1,000 tokens can arrive as anything from 980 to 1,000.
- After you sign, the route, fees and deadline cannot be changed.
- Track a cross-chain swap in the WebApp transaction history or by pasting the transaction hash or wallet address into Symbiosis Explorer.
- Statuses are Pending, Success and Reverted.
- Official support runs through Discord, Telegram and the Intercom chat inside the app.
- When you open a ticket, include the operation type, tokens and chains, the transaction hash and your wallet address.
- If a swap stays Pending, the docs say it completes once conditions are met or is reverted automatically.
Symbiosis fees and limits
You pay gas only for the one transaction you sign on the source chain. Relayers pay gas on the Host Chain and the destination chain, and the protocol withholds those costs from your tokens in a stablecoin equivalent (GasEstimatedUSD1 and GasEstimatedUSD2) that is fixed when you sign. The docs warn that on high-fee destinations such as Ethereum or Tron, these cross-chain fees can take a noticeable share of small swaps. Staking SIS for veSIS reduces cross-chain fees, per the docs.
Risks to know before using Symbiosis
- If the destination price moves past your limit, the protocol sends USDC, USDT, WETH or WBTC instead of the token you picked, and you need gas on that chain to swap it; if you have none, the docs direct you to support on Discord.
- Swaps marked Stuck have been reverted automatically within one hour since February 9, 2025, returning the transit token to your address on the source chain.
- Before that date users had to revert manually in the WebApp.
- A revert is itself a cross-chain operation and can also get stuck.
- Core Contracts are deployed and tuned by Symbiosis administrators when a chain is added, and the FAQ says the team consults legal advisors before integrating a new chain.
- The docs warn never to share a seed phrase with anyone claiming to be Symbiosis support.
- Relayers sign each cross-chain step with their MPC key, so completion of your transfer depends on that network.
Symbiosis usage
From DefiLlama (TVL) (fees users paid), updated Nov 9, 2026.
Symbiosis alternatives
Other projects people compare with Symbiosis.
Cross-chain bridge using nUSD and nETH liquidity pools, canonical wrapping, CCTP and an RFQ relayer network.
Token bridge app built on the Wormhole messaging protocol, which is verified by a Guardian network.
Intent-based cross-chain bridge where relayers fill transfers and are repaid later from pooled liquidity.
Cross-chain bridge for stablecoin transfers between EVM and non-EVM chains, run as Allbridge Core.
Cross-chain swap and bridge protocol where solvers fill orders from their own liquidity instead of pooled TVL.
Intent-based bridge and swap service where solvers fill cross-chain orders with their own capital.
Symbiosis pros and cons
- Swaps across 50+ chains per its site, including TON and Tron
- Audits by Omniscia, SlowMist, Zokyo, Decurity and HashCloak
- One signed transaction covers all hops
- Gas for S-chain and destination hops is withheld from the output
- Routes pass through synthetic sTokens
- Integrators must deploy their own collector contracts to add fees
- Terms exclude US residents and US entities
Symbiosis FAQ
What is Symbiosis?
Symbiosis is a cross-chain swap and bridge protocol that routes each transfer through its S-chain using sTokens and Octopool liquidity. Gas on the S-chain and destination is withheld from the swap in a stablecoin equivalent. Its site lists swaps across 50+ chains.
How much value is locked in Symbiosis?
$8M according to DefiLlama on Nov 9, 2026. It is deployed on 58 chains: Tron, Ethereum, TON, Binance, Robinhood Chain, Arbitrum and others.
How much does Symbiosis cost?
Source gas paid by user; S-chain and destination gas withheld from the swap in stablecoin equivalent, according to Symbiosis’s own page (checked Sep 26, 2026).
How much do users pay Symbiosis in fees?
$197,646 over the last 30 days, according to DefiLlama on Nov 9, 2026.
Does Symbiosis have a token?
Yes, SIS. Its market cap was $1.6M on CoinGecko on Nov 9, 2026. Educational content, not financial advice.
Is Symbiosis available in the US?
Not available: terms exclude US residents, citizens and US-incorporated entities, according to Symbiosis’s own page (checked Sep 26, 2026).
Does Symbiosis hold my funds?
No. Symbiosis is non-custodial: you keep your funds in your own wallet and sign each transaction.
Sources
- Symbiosis: official site
- Symbiosis: Symbiosis and Fees
- Symbiosis: Home page
- Symbiosis: Audits repository
- Symbiosis: SIS Token
- Symbiosis: Terms of Use
- Symbiosis: Getting Started
- Symbiosis: Cross-Chain Swaps
- Symbiosis: Where Are My Tokens troubleshooting guide
- Symbiosis: Symbiosis and Emergencies
- Symbiosis: Relayers Network
- Symbiosis: FAQ
- CoinGecko
- DefiLlama
How this page works
Sources: Symbiosis: official site, Symbiosis: Symbiosis and Fees, Symbiosis: Home page. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.