Production Readiness

---
description: Integrate light-token APIs for stablecoin payments
allowed-tools: Bash, Read, Write, Edit, Glob, Grep, WebFetch, AskUserQuestion, Task, TaskCreate, TaskGet, TaskList, TaskUpdate, TaskOutput, mcp__deepwiki, mcp__zkcompression
---

## Integrate light-token APIs for stablecoin payments

Context:
- Guide: https://zkcompression.com/light-token/payments/overview
- Skills and resources index: https://zkcompression.com/skill.md
- SPL to Light reference: https://zkcompression.com/api-reference/solana-to-light-comparison
- Dedicated skill: https://github.com/Lightprotocol/skills/tree/main/skills/payments
- Packages: @lightprotocol/compressed-token, @lightprotocol/stateless.js
- Import from @lightprotocol/compressed-token/unified for all interface APIs

SPL → Light Token API mapping:
| Operation    | SPL                               | Light Token                              |
| Receive      | getOrCreateAssociatedTokenAccount() | createLoadAtaInstructions() / loadAta()  |
| Transfer     | createTransferInstruction()        | createTransferInterfaceInstructions()    |
| Delegated Transfer | transfer() (delegate signs)  | transferInterface(..., ownerPubkey, delegateSigner, ...) |
| Get Balance  | getAccount()                      | getAtaInterface()                        |
| Tx History   | getSignaturesForAddress()         | getSignaturesForOwnerInterface()         |
| Wrap SPL     | N/A                               | createWrapInstruction() / wrap()         |
| Unwrap       | N/A                               | createUnwrapInstructions() / unwrap()    |

### 1. Index project
- Grep `@solana/spl-token|@lightprotocol|createTransferInstruction|getAccount|Connection|Keypair|stablecoin|payment` across src/
- Glob `**/*.ts` and `**/*.tsx` for project structure
- Identify: RPC setup, existing token operations, payment flow, wallet signing pattern
- Check package.json for existing @lightprotocol/* or @solana/spl-token dependencies
- Task subagent (Grep/Read/WebFetch) if project has multiple packages to scan in parallel

### 2. Read references
- WebFetch the guide above — review Instruction and Action tabs for each operation
- WebFetch skill.md — check for a dedicated skill and resources matching this task
- TaskCreate one todo per phase below to track progress

### 3. Clarify intention
- AskUserQuestion: what is the goal? (new payment integration, migrate existing SPL payment flow, add alongside existing SPL)
- AskUserQuestion: which operations? (receive, send, balance, history, wrap, unwrap — or all)
- AskUserQuestion: instruction-level API (build your own transactions) or action-level API (high-level, fewer lines)?
- Summarize findings and wait for user confirmation before implementing

### 4. Create plan
- Based on steps 1–3, draft an implementation plan: which files to modify, what code to add, dependency changes
- Verify existing connection/signer setup is compatible (createRpc with ZK Compression endpoint)
- Key pattern: import from `@lightprotocol/compressed-token/unified` for all interface APIs
- If anything is unclear or ambiguous, loop back to step 3 (AskUserQuestion)
- Present the plan to the user for approval before proceeding

### 5. Implement
- Add deps if missing: Bash `npm install @lightprotocol/compressed-token @lightprotocol/stateless.js`
- Set up RPC: `createRpc(RPC_ENDPOINT)` with a ZK Compression endpoint (Helius, Triton)
- Import from `@lightprotocol/compressed-token/unified` for the interface APIs
- Follow the guide and the approved plan
- Write/Edit to create or modify files
- TaskUpdate to mark each step done

### 6. Verify
- Bash `tsc --noEmit`
- Bash run existing test suite if present
- TaskUpdate to mark complete

### Tools
- mcp__zkcompression__SearchLightProtocol("<query>") for API details
- mcp__deepwiki__ask_question("Lightprotocol/light-protocol", "<q>") for architecture
- Task subagent with Grep/Read/WebFetch for parallel lookups
- TaskList to check remaining work

### Resources

Guides:
- Basic payment: https://zkcompression.com/light-token/payments/basic-payment
- Batch payments: https://zkcompression.com/light-token/payments/batch-payments
- Payment with memo: https://zkcompression.com/light-token/payments/payment-with-memo
- Receive payments: https://zkcompression.com/light-token/payments/receive-payments
- Verify payments: https://zkcompression.com/light-token/payments/verify-payments
- Verify recipient address: https://zkcompression.com/light-token/payments/verify-recipient-address
- Spend permissions: https://zkcompression.com/light-token/payments/spend-permissions
- Wrap and unwrap: https://zkcompression.com/light-token/payments/wrap-unwrap
- Production readiness: https://zkcompression.com/light-token/payments/production-readiness
- FAQ: https://zkcompression.com/faq
- Sign with Privy: https://zkcompression.com/light-token/wallets/privy
- Sign with Wallet Adapter: https://zkcompression.com/light-token/wallets/wallet-adapter
- Gasless transactions: https://zkcompression.com/light-token/wallets/gasless-transactions

Examples:
- All payments: https://github.com/Lightprotocol/examples-light-token/tree/main/toolkits/payments
- Send (instruction): https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/send/basic-send-instruction.ts
- Send (action): https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/send/basic-send-action.ts
- Batch send: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/send/batch-send.ts
- Payment with memo: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/send/payment-with-memo.ts
- Receive: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/receive/receive.ts
- Get balance: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/verify/get-balance.ts
- Get history: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/verify/get-history.ts
- Verify address: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/verify/verify-address.ts
- Wrap: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/interop/wrap.ts
- Unwrap: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/payments/interop/unwrap.ts
- Privy (Node.js): https://github.com/Lightprotocol/examples-light-token/tree/main/toolkits/sign-with-privy/nodejs
- Privy (React): https://github.com/Lightprotocol/examples-light-token/tree/main/toolkits/sign-with-privy/react
- Wallet Adapter (React): https://github.com/Lightprotocol/examples-light-token/tree/main/toolkits/sign-with-wallet-adapter/react
- Gasless transfer: https://github.com/Lightprotocol/examples-light-token/blob/main/toolkits/gasless-transactions/typescript/gasless-transfer.ts