VeChain Development Skill

CRITICAL RULES

Read reference files FIRST. When the user's request involves any topic in the reference table below, read those files before doing anything else — before writing code, before making decisions. Briefly mention which files you are reading so the user can confirm the skill is active (e.g., "Reading fee delegation reference...").
Information priority for VeChain topics: (a) Reference files in this skill — always the primary source. (b) VeChain MCP tools — use @vechain/mcp-server for on-chain data, transaction building, and live network queries; use Kapa AI MCP for VeChain documentation lookups. (c) Web search — only as a last resort, and only for topics NOT covered in the reference files.
Prefer working directly in the main conversation for VeChain tasks. Plan mode and subagents do not inherit skill context and may fall back to web search instead of using reference files.
After compaction or context loss, re-read this SKILL.md to restore awareness of the reference table and operating procedure before continuing work.

Use this Skill for general VeChain development:

SDK usage (@vechain/sdk-core, @vechain/sdk-network, ethers adapter)
Fee delegation (VIP-191) — gasless transactions, backend sponsorship, vechain.energy
Multi-clause transactions — atomic batching of multiple operations
Dual-token model (VET for value, VTHO for gas)
Legacy migration from Connex/thor-devkit to VeChain SDK
General VeChainThor development patterns and reference links