symbiosis
Cross-chain token swaps across 54+ blockchains via Symbiosis protocol. Use when the user wants to swap or bridge tokens between any chains — Base, Ethereum, Polygon, Arbitrum, Optimism, BNB Chain, Avalanche, Solana, Bitcoin, TON, Tron, and 40+ more. Supports any-to-any token swaps with automatic routing. Uses Bankr Submit API to execute transactions.
What this skill does
# Symbiosis Cross-chain token swaps across 54+ blockchains. Swap any token on any chain to any token on any other chain. ## When To Use Use Symbiosis when the user wants to: - **Bridge or swap tokens between different chains** (e.g., USDC from Base to Polygon, ETH from Ethereum to Arbitrum) - **Access chains beyond Bankr's native 5** (Arbitrum, Optimism, BNB Chain, Avalanche, zkSync, Linea, Scroll, Mantle, Blast, and 40+ more) - **Swap to/from Bitcoin, TON, or Tron** - **Get a cross-chain quote** without executing ## Quick Start ### Get a Quote ``` How much USDC will I get on Polygon if I bridge 10 USDC from Base? ``` Run the quote script: ```bash scripts/symbiosis-quote.py 8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 6 10 137 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 6 ``` ### Execute a Swap ``` Bridge 2 USDC from Base to Polygon using Symbiosis ``` Run the swap script: ```bash scripts/symbiosis-swap.py 8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 6 2 137 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 6 ``` ## Script Usage ### symbiosis-swap.py Executes a full cross-chain swap: gets quote from Symbiosis API, approves token if needed, submits swap transaction via Bankr Submit API. ``` scripts/symbiosis-swap.py <src_chain_id> <src_token_address> <src_decimals> <amount> <dst_chain_id> <dst_token_address> <dst_decimals> [slippage] ``` - `amount` — human-readable (e.g., "2" for 2 USDC, "0.1" for 0.1 ETH) - `slippage` — optional, in basis points (default: 200 = 2%) - Reads Bankr API key from `~/.bankr/config.json` - Automatically gets wallet address from Bankr - Outputs transaction hash and Explorer tracking link ### symbiosis-quote.py Gets a quote without executing. Same arguments, no slippage parameter. ``` scripts/symbiosis-quote.py <src_chain_id> <src_token_address> <src_decimals> <amount> <dst_chain_id> <dst_token_address> <dst_decimals> ``` ## Common Chains and Tokens ### Bankr Wallet Chains | Chain | ID | USDC Address | USDC Dec | |-------|----|-------------|----------| | Base | 8453 | 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 | 6 | | Ethereum | 1 | 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 | 6 | | Polygon | 137 | 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 | 6 | ### Additional Chains via Symbiosis | Chain | ID | USDC Address | USDC Dec | |-------|----|-------------|----------| | Arbitrum | 42161 | 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 | 6 | | Optimism | 10 | 0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85 | 6 | | BNB Chain | 56 | 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d | 18 | | Avalanche | 43114 | 0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E | 6 | ### Native Tokens Use `0x0000000000000000000000000000000000000000` as address for native gas tokens (ETH, POL, BNB, AVAX, etc.). **Reference**: [references/chains-and-tokens.md](references/chains-and-tokens.md) for the full list. ## Examples ### EVM to EVM ```bash # 5 USDC: Base -> Arbitrum scripts/symbiosis-swap.py 8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 6 5 42161 0xaf88d065e77c8cC2239327C5EDb3A432268e5831 6 # 0.01 ETH: Ethereum -> Base scripts/symbiosis-swap.py 1 0x0000000000000000000000000000000000000000 18 0.01 8453 0x0000000000000000000000000000000000000000 18 # 10 USDC: Polygon -> BNB Chain scripts/symbiosis-swap.py 137 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359 6 10 56 0x8AC76a51cc950d9822D68b83fE1Ad97B32Cd580d 18 # 0.5 ETH: Base -> Optimism scripts/symbiosis-swap.py 8453 0x0000000000000000000000000000000000000000 18 0.5 10 0x0000000000000000000000000000000000000000 18 ``` ### Cross-ecosystem (Symbiosis-only routes) ```bash # 10 USDC: Base -> Solana # Note: Solana chain ID in Symbiosis is 5426 # Solana USDC: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v (but use Symbiosis synthetic address) scripts/symbiosis-swap.py 8453 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 6 10 5426 0x0000000000000000000000000000000000000000 9 ``` ### Prompt Examples Users might say: - "Bridge 5 USDC from Base to Arbitrum" - "Swap 0.1 ETH from Ethereum to Polygon" - "Move my USDC from Base to Optimism" - "How much will I get if I bridge 100 USDC from Base to Avalanche?" - "Cross-chain swap 50 USDC from Polygon to BNB Chain" - "Bridge ETH from Base to Solana" For each request: identify source chain + token, destination chain + token, look up chain IDs and token addresses from the tables above, and run the appropriate script. ## How It Works 1. **Quote**: Script calls Symbiosis API (`POST /crosschain/v1/swap`) with token details and wallet address 2. **Approve**: If source token needs approval, script submits an ERC20 approve transaction via `POST https://api.bankr.bot/agent/submit` 3. **Swap**: Script submits the swap transaction via `POST https://api.bankr.bot/agent/submit` 4. **Track**: Returns an Explorer link for cross-chain status tracking All transactions are submitted through the Bankr Submit API using the user's Bankr wallet. No additional wallets or keys needed. ## Resources - **Explorer**: https://explorer.symbiosis.finance - **Website**: https://symbiosis.finance - **API Docs**: [references/api-reference.md](references/api-reference.md) - **Chains & Tokens**: [references/chains-and-tokens.md](references/chains-and-tokens.md)
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