Bucket SDK

Use this skill whenever the task touches @bucket-protocol/sdk.

Official docs:

• https://docs.bucketprotocol.io/
• https://github.com/Bucket-Protocol/bucket-protocol-sdk

Trigger Scope

Use for:

• Building PTBs with buildManagePositionTransaction, buildPSMSwapInTransaction, saving pool builders, or flash mint.
• Querying collateral, pool, oracle, position, account, or reward data.
• Debugging Bucket integration issues (Unsupported collateral type, price feed issues, pool balance checks).

Do not use for:

• Generic Sui SDK tasks that do not involve Bucket Protocol.

Fast Workflow

1. Initialize client:

import { BucketClient } from '@bucket-protocol/sdk';
const client = await BucketClient.initialize({ network: 'mainnet' });

2. Resolve live types (never assume static lists):

const usdbType = await client.getUsdbCoinType();
const collateralTypes = await client.getAllCollateralTypes();
const oracleTypes = await client.getAllOracleCoinTypes();
const psmTypes = Object.keys(await client.getAllPsmPoolObjects());
const savingLpTypes = Object.keys(await client.getAllSavingPoolObjects());

3. Build PTB commands on Transaction, then sign and execute separately.
4. For unsupported user input, validate against live lists/maps first and return a clear error.
5. If config may be stale (protocol upgrade), call await client.refreshConfig().

Coin Type Policy

Keep context small. Do not paste long coin-type tables unless explicitly requested.

Rules:

1. CDP coinType must come from getAllCollateralTypes().
2. PSM coinType must come from keys of getAllPsmPoolObjects().
3. Saving lpType must come from keys of getAllSavingPoolObjects().
4. Oracle price queries should use getAllOracleCoinTypes() when possible.
5. Use references/coin-types.md only when the user asks for static literals.

Core Behavior Notes

• All write methods are PTB builders (build*): they append Move calls, not execute transactions.
• Amounts are raw integers (smallest unit). No auto decimal scaling.
• Most config-dependent methods are async; always await.
• buildManagePositionTransaction auto-aggregates prices when borrow or withdraw is requested.
• accountObjectOrId switches from EOA mode to Bucket Account mode.

Default Implementation Skeleton

Use this shape unless the user asks for another architecture:

import { BucketClient } from '@bucket-protocol/sdk';
import { Transaction } from '@mysten/sui/transactions';

const client = await BucketClient.initialize({ network: 'mainnet' });
const tx = new Transaction();

// validate types from live config here
// append build* commands here

tx.setSender(address);
await client.getSuiClient().signAndExecuteTransaction({ signer, transaction: tx });

If user asks for simulation only, use simulateTransaction after setting sender.

Method Map

Query methods:

• getUsdbSupply, getAllVaultObjects, getAllPsmPoolObjects, getAllSavingPoolObjects
• getUserPositions, getUserSavings, getUserAccounts
• getOraclePrices, getAllOraclePrices

Build methods:

• CDP: buildManagePositionTransaction, buildClosePositionTransaction, buildClaimBorrowRewardsTransaction
• PSM: buildPSMSwapInTransaction, buildPSMSwapOutTransaction
• Saving: buildDepositToSavingPoolTransaction, buildWithdrawFromSavingPoolTransaction, buildClaimSavingRewardsTransaction
• Flash: flashMint, flashBurn

What To Open Next (Modular References)

Read only what you need:

• references/api-workflows.md
  • End-to-end PTB examples for CDP, PSM, saving, flash, and composition.
• references/query-cheatsheet.md
  • Query API quick reference, return-shape expectations, and troubleshooting checks.
• references/protocol-concepts.md
  • CDP mechanics, CR/MCR, liquidation model, PSM peg behavior, and yield layers.
• references/coin-types.md
  • Dynamic type resolution patterns and a small literal snapshot.

Runtime Diagnostics

Use the bundled script when you need a quick live state snapshot:

# Run in a project directory that has @bucket-protocol/sdk installed
# <skill-root> is wherever you store this skill, for example:
#   .github/skills/bucket-sdk
#   .agents/skills/bucket-sdk
#   .claude/skills/bucket-sdk
node <skill-root>/scripts/query-state.mjs

It prints supply, prices, vault stats, PSM pools, saving pools, and supported collateral types.

Response Expectations

• Return code that is copy-paste runnable in TypeScript.
• Mention which live type source was used (getAllCollateralTypes, PSM keys, or saving LP keys).
• When rejecting input, include the checked list source and a short fix suggestion.
• Prefer small, composable PTBs over unrelated helper abstractions.

Quality Gates Before Finalizing

1. Type validation done against live config (not hardcoded memory).
2. Amount units are raw integer units.
3. Transaction path is complete: build -> set sender -> sign+execute (or simulate).
4. Failure handling includes useful checks:
   • Unsupported collateral or PSM or lp type
   • Missing price feed
   • Insufficient pool balance
   • Insufficient user balance