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LICENSE IN LICENSE","homepage":"https://orca.so","keywords":["solana","crypto","defi","dex","amm"],"repository":{"url":"git+https://github.com/orca-so/tx-sender.git","type":"git"},"description":"Send transactions to the Solana blockchain with auto priority fees.","maintainers":[{"email":"tmoc@orca.so","name":"tmoc.orca"},{"email":"yugure@orca.so","name":"yugure-orca"},{"email":"wjthieme@orca.so","name":"wjthieme-orca"}],"readme":"# @orca-so/tx-sender\n\nA lightweight TypeScript package for building and sending Solana transactions with support for priority fees and Jito tips.\n\n## Key Features\n\n- Simple initialization via `setRpc()` function to configure RPC endpoints and default transaction settings\n- Main entry point `buildAndSendTransaction()` handles transaction building, signing, and confirmation\n- Built-in support for priority fees and Jito MEV tips\n- Configurable compute unit margin multiplier to ensure sufficient compute budget\n\n## Testing\n\n```\nyarn test\n```\n\n## Example\n\n```ts\nimport { setRpc, setPriorityFeeSetting, setJitoTipSetting, setComputeUnitMarginMultiplier, buildAndSendTransaction } from \"@orca-so/tx-sender\";\n\nconst kp = await createKeyPairFromBytes(new Uint8Array([1, 2, 3, 4,...]));\nconst signer = await createSignerFromKeyPair(kp);\n\n// Initialize RPC connection\n// By default, uses continuous polling (pollIntervalMs: 0) with resending (resendOnPoll: true)\n// for maximum landing rate - best for premium RPCs\nawait setRpc(\"https://api.mainnet-beta.solana.com\");\n\n// For public/free RPCs: reduce RPC usage to avoid rate limits\nawait setRpc(\"https://api.devnet.solana.com\", {\n  pollIntervalMs: 1000,\n  resendOnPoll: false,\n});\n\n// Optional: Configure priority fees\nsetPriorityFeeSetting({\n  type: \"dynamic\",\n  maxCapLamports: BigInt(5_000_000), // Cap at 0.005 SOL\n});\n\n// Optional: Configure Jito tips\nsetJitoTipSetting({\n  type: \"dynamic\"\n});\n\n// Optional: Adjust compute unit margin\nsetComputeUnitMarginMultiplier(1.04); // 4% margin for compute units\n\nconst txHash = await buildAndSendTransaction(\n  [instruction1, instruction2],\n  keypairSigner\n);\n```\n\n## Default Fee Settings\n\nBy default, tx-sender uses the following configuration:\n\n- Priority Fees: Dynamic pricing with a max cap of 0.004 SOL (4,000,000 lamports), using the 50th percentile fee\n- Jito Tips: Dynamic pricing with a max cap of 0.004 SOL (4,000,000 lamports), using the 50th percentile fee\n- Compute Unit Margin: 1.1x multiplier for compute unit calculation (10% margin)\n- Jito Block Engine URL: https://bundles.jito.wtf\n\nThese defaults can be overridden using the configuration functions shown in the example above.\n","readmeFilename":"README.md"}