Stellar Development Skill (Soroban-first) What this Skill is for Use this Skill when the user asks for: Soroban smart contract development (Rust) Stellar dApp frontend work (React / Next.js / Node.js) Wallet connection + signing flows (Freighter, etc.) Transaction building / sending / confirmation Stellar Asset issuance and management Client SDK usage (JavaScript, Python, Go, Rust) Local testing and deployment Security hardening and audit-style reviews What this Skill is NOT for Bitcoin, Ethereum, Solana, or other non-Stellar blockchain development Stellar node/validator operation (see validators docs ) General Rust programming unrelated to Soroban Stellar protocol governance or CAP authoring Default stack decisions (opinionated) 1. Smart Contracts: Soroban (Rust) Use Soroban SDK ( soroban-sdk crate) for all smart contract development Contracts compile to WebAssembly (WASM) Use

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• standard library not available 64KB contract size limit - use release optimizations Prefer Stellar Assets over custom token contracts when possible
• Client SDK: stellar-sdk (JavaScript) first Use @stellar/stellar-sdk for browser and Node.js applications Supports both Stellar RPC and legacy Horizon API Full transaction building, signing, and submission Soroban contract deployment and invocation
• API Access: Stellar RPC first (Horizon deprecated) Prefer Stellar RPC for new projects (JSON-RPC, real-time state) Horizon API is deprecated but maintained for legacy compatibility RPC: 7-day history for most methods; getLedgers queries back to genesis (Infinite Scroll) Use Hubble/Galexie for comprehensive historical data beyond RPC
• Token Strategy: Stellar Assets first Prefer Stellar Assets (classic issuance + trustlines) for fungible tokens Built-in ecosystem support (wallets, exchanges, anchors) Stellar Asset Contracts (SAC) provide Soroban interoperability Use custom Soroban tokens only for complex logic requirements

• Testing

  Local

  Use Stellar Quickstart Docker for local network

  Testnet

  Use Testnet with Friendbot for funding

  Unit tests

  Compile to native for fast iteration

  Integration tests

  Deploy to local/testnet

• Wallet Integration Freighter is the primary browser wallet Use Stellar Wallets Kit for multi-wallet support Wallet Standard for consistent connection patterns Operating procedure (how to execute tasks)
• Classify the task layer Smart contract layer (Soroban/Rust) Client SDK/scripts layer (JS/Python/Go) Frontend/wallet layer Asset management layer (issuance, trustlines) Testing/CI layer Infrastructure (RPC/Horizon/indexing) Quick routing Need custom on-chain logic? → contracts-soroban.md Building a frontend/dApp? → frontend-stellar-sdk.md Issuing or managing tokens? → stellar-assets.md Setting up tests/CI? → testing.md Querying chain data or indexing? → api-rpc-horizon.md (also see Data Docs ) Security review? → security.md Hit an error? → common-pitfalls.md
• Pick the right building blocks Contracts: Soroban Rust SDK + Stellar CLI Frontend: stellar-sdk (JS) + Freighter/Wallets Kit Backend: stellar-sdk (JS/Python/Go) + RPC Assets: Classic operations or SAC for Soroban interop Testing: Quickstart (local) or Testnet
• Implement with Stellar-specific correctness Always be explicit about: Network passphrase (Mainnet vs Testnet vs local) Source account + sequence number Fee + resource limits (for Soroban) Authorization requirements Trustline status for assets Contract storage types (temporary vs persistent vs instance)
• Add tests Unit tests: Native compilation with

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Integration tests: Local Quickstart or Testnet Contract tests: Use Env from soroban-sdk Frontend tests: Mock wallet/RPC interactions 5. Deliverables expectations When you implement changes, provide: Exact files changed + diffs Commands to install/build/test/deploy Network configuration (passphrase, RPC endpoint) Risk notes for signing/fees/storage/authorization Progressive disclosure (read when needed) Smart contracts: contracts-soroban.md Frontend + wallets: frontend-stellar-sdk.md Testing strategy: testing.md Stellar Assets: stellar-assets.md API access (RPC/Horizon): api-rpc-horizon.md Security checklist: security.md Common pitfalls: common-pitfalls.md Ecosystem projects: ecosystem.md Reference links: resources.md Keywords stellar, soroban, xlm, smart contracts, rust, wasm, webassembly, rpc, horizon, freighter, stellar-sdk, soroban-sdk, stellar-cli, trustline, anchor, sep, passkey, smart wallet, sac, stellar asset contract, defi, token, nft, scaffold stellar