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Use when users ask to set up universal-account-example, buy or sell tokens, run convert/swap flows, transfer assets, call custom transactions, query balances/history, or monitor transaction status via WebSocket.\nmetadata: {\"openclaw\":{\"os\":[\"darwin\",\"linux\"],\"requires\":{\"bins\":[\"node\",\"npm\"]},\"install\":[{\"id\":\"brew-node\",\"label\":\"Install Node.js and npm (Homebrew)\",\"kind\":\"brew\",\"formula\":\"node\",\"bins\":[\"node\",\"npm\"]}]}}\n---\n\n# Universal Trading\n\nExecute cross-chain trades with the official Particle Network `universal-account-example` project.\n\n## First-Use Auto Initialization (Default)\n\nWhen users install this skill and start using it for the first time, auto-run initialization by default.\n\nUse this decision flow:\n\n1. If `universal-account-example/.env` already exists, treat environment as initialized and continue to trading tasks.\n2. If not initialized, run from any directory:\n\n```bash\nbash {baseDir}/scripts/init.sh new\n```\n\n3. If user explicitly wants to import an existing wallet, run:\n\n```bash\nbash {baseDir}/scripts/init.sh import <YOUR_PRIVATE_KEY>\n```\n\nAfter initialization, explicitly tell users:\n- private key is stored at `universal-account-example/.env` under `PRIVATE_KEY`\n- they can use this wallet in the UniversalX frontend:\n  `https://universalx.app` -> `创建钱包` -> `导入现有钱包`\n\nBy default, setup auto-binds invite code `666666` after `.env` is created.\nIt also patches `examples/buy-evm.ts` to remove `usePrimaryTokens` restriction.\n\nOptional flags:\n\n```bash\n# Use existing repo path\nbash {baseDir}/scripts/init.sh new --target /path/to/universal-account-example\n\n# Skip smoke test\nbash {baseDir}/scripts/init.sh new --skip-smoke\n\n# Disable invite auto-bind\nDISABLE_AUTO_INVITE_BIND=1 bash {baseDir}/scripts/init.sh new\n```\n\n## Available Operations\n\nUse scripts inside `universal-account-example/examples`:\n\n- Buy token: `buy-solana.ts`, `buy-evm.ts`\n- Sell token: `sell-solana.ts`, `sell-evm.ts`\n- Convert (swap): `convert-solana.ts`, `convert-evm.ts`, `7702-convert-evm.ts`\n- Transfer: `transfer-solana.ts`, `transfer-evm.ts`\n- Custom transaction calls: `custom-transaction-*`\n- Balance and history: `get-primary-asset.ts`, `get-transactions.ts`\n- Real-time monitoring: `transaction-status-wss.ts`, `user-assets-wss.ts`\n\nFor buy operations that need explicit slippage control, use:\n- `scripts/buy-with-slippage.sh` (fixed slippage or dynamic retry)\n\n## Trade Status Follow-Up (Required)\n\nAfter any `sendTransaction`, do not stop at \"transaction submitted\".\nAlways return final outcome to user:\n\n1. Capture and show `transactionId`.\n2. Poll status until success or failure:\n\n```bash\ncd /path/to/universal-account-example\nbash {baseDir}/scripts/check-transaction.sh <TRANSACTION_ID> --max-attempts 30 --interval-sec 2\n```\n\n3. Reply with one of:\n- `SUCCESS` (confirmed)\n- `FAILED` (failed on-chain/executor)\n- `PENDING` (not finalized before timeout, include explorer link)\n\n## Trade Configuration\n\n| Option | Description | Example |\n|--------|-------------|---------|\n| `slippageBps` | Slippage tolerance (100 = 1%) | `100` |\n| `universalGas` | Use PARTI token for gas | `true` |\n| `usePrimaryTokens` | Restrict source/fee primary tokens. Default: do not set (auto select). | `[SUPPORTED_TOKEN_TYPE.USDT, SUPPORTED_TOKEN_TYPE.USDC]` |\n| `solanaMEVTipAmount` | Jito tip for MEV protection (SOL) | `0.01` |\n\n## Slippage Controls (Required for Volatile Tokens)\n\nAllow users to choose one of these modes before buy:\n\n1. Fixed slippage only:\n```bash\ncd /path/to/universal-account-example\nbash {baseDir}/scripts/buy-with-slippage.sh \\\n  --chain bsc \\\n  --token-address 0x0000000000000000000000000000000000000000 \\\n  --amount-usd 5 \\\n  --slippage-bps 300\n```\n\n2. Dynamic slippage + auto retry:\n```bash\ncd /path/to/universal-account-example\nbash {baseDir}/scripts/buy-with-slippage.sh \\\n  --chain bsc \\\n  --token-address 0x0000000000000000000000000000000000000000 \\\n  --amount-usd 5 \\\n  --slippage-bps 300 \\\n  --dynamic-slippage \\\n  --retry-slippages 300,500,800,1200\n```\n\n3. Solana custom tip (anti-MEV) + retry tips:\n```bash\ncd /path/to/universal-account-example\nbash {baseDir}/scripts/buy-with-slippage.sh \\\n  --chain solana \\\n  --token-address 6p6xgHyF7AeE6TZkSmFsko444wqoP15icUSqi2jfGiPN \\\n  --amount-usd 5 \\\n  --slippage-bps 300 \\\n  --dynamic-slippage \\\n  --retry-slippages 300,500,800,1200 \\\n  --solana-mev-tip-amount 0.001 \\\n  --retry-mev-tips 0.001,0.003,0.005\n```\n\nReply with:\n- chosen slippage mode and values\n- chosen Solana tip settings (if Solana)\n- final status (`SUCCESS` / `FAILED` / `PENDING`)\n- `transactionId` and explorer URL when available\n\n## Supported Chains\n\n- Solana: `CHAIN_ID.SOLANA_MAINNET`\n- EVM: `CHAIN_ID.POLYGON`, `CHAIN_ID.ARBITRUM`, `CHAIN_ID.OPTIMISM`, `CHAIN_ID.BSC`, `CHAIN_ID.ETHEREUM`\n\n## Common Token Addresses\n\n- SOL (native): `0x0000000000000000000000000000000000000000`\n- USDC (Solana): `EPjFWdd5AufqSSFqM7BcEHw3BXmQ9Ce3pq27dUGL7C24`\n- USDT (Solana): `Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB`\n\n## Safety Checklist\n\n1. Validate chain, token address, and amount before creating transactions.\n2. Use small size for first live trade.\n3. Wrap `sendTransaction` in try-catch and log `transactionId`.\n4. Prefer your own Particle credentials for production workloads.\n\n## Reference Files\n\n- [Environment Setup](references/env-setup.md)\n- [API Reference](references/api.md)\n- [Examples](references/examples.md)\n","readmeExcerpt":"--- name: universal-trading description: Execute cross-chain token trading on EVM and Solana with Particle Network Universal Account SDK. 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