Skip to main content
The Build skill makes your AI assistant an expert Solana developer. It provides routing logic, correct SDK patterns, deep reference files for every Helius product, and rules that prevent common mistakes like hardcoded fees, wrong endpoints, or missing Sender tips. When installed, the AI automatically reads the right reference files and calls the right MCP tools based on what you ask — no manual tool selection needed.
Claude Code: /helius:build (via plugin) or auto-invoked (standalone). Codex: $helius (auto-discovered from .agents/skills/). API / Cursor / ChatGPT: Use the pre-built system prompt variants.

​
What It Covers

The Build skill routes the AI to the correct Helius tools and documentation for each task:
DomainHelius ProductsMCP Tools Used
Transaction SendingSender, Priority Fee APIgetPriorityFeeEstimate, getSenderInfo, transferSol, transferToken
Asset & NFT QueriesDAS APIgetAssetsByOwner, getAsset, searchAssets, getAssetsByGroup, getAssetProof
Real-Time StreamingEnhanced WebSockets, LaserStreamtransactionSubscribe, accountSubscribe, laserstreamSubscribe
Event PipelinesWebhookscreateWebhook, getAllWebhooks, updateWebhook, deleteWebhook
Wallet AnalysisWallet APIgetWalletIdentity, getWalletBalances, getWalletHistory, getWalletTransfers
Transaction HistoryEnhanced TransactionsparseTransactions
OnboardingCLI, AuthgenerateKeypair, agenticSignup, setHeliusApiKey
Solana KnowledgeSIMDs, Source Code, BloggetSIMD, readSolanaSourceFile, fetchHeliusBlog

​
Prerequisites

The Build skill requires the Helius MCP server (or the equivalent tools configured in your agent framework). If you install via the Claude Code plugin, the MCP server starts automatically. For standalone installation, add it manually: 
claude mcp add helius npx helius-mcp@latest

​
Standalone Installation

If you want the Build skill without the full plugin, install it directly:
1

Clone the repository

git clone https://github.com/helius-labs/core-ai.git
cd core-ai/helius-skills/helius
2

Run the install script

./install.sh
This installs the skill and its reference files to ~/.claude/skills/helius/.Options:
  • ./install.sh --project — install to the current project (.claude/skills/helius/)
  • ./install.sh --path /custom/path — install to a custom directory
3

Install the Helius MCP server

claude mcp add helius npx helius-mcp@latest
4

Set your API key

export HELIUS_API_KEY=YOUR_API_KEY
Or use the setHeliusApiKey MCP tool inside Claude Code. If you need a new account, see Helius CLI or use the autonomous signup flow via MCP tools.

​
Example Prompts

Once installed, ask in plain English:
  • “Who funded wallet 7jfe92...?”
  • “What NFTs does this wallet own?”
  • “Create a tax reporting CLI so I can fetch my wallet’s activity and view it as a CSV file”
  • “Set up a webhook to monitor my wallet for incoming transfers”
  • “Parse this transaction: 5abc...”
  • “Build a portfolio tracker with real-time updates for my wallet”
  • “Send 1 SOL to Gh9ZwEm...”
The AI picks the right tools and reads the right reference files automatically.

​
What’s Included

The skill installs two components:
  • SKILL.md — Routing logic, rules, and expert context that guide the AI’s behavior
  • prompts/ — Pre-built system prompt variants (openai.developer.md, claude.system.md, full.md) — see platform setup
  • references/ — Deep documentation files for each Helius product:
    • das.md — Digital Asset Standard API
    • sender.md — Transaction sending service
    • priority-fees.md — Fee estimation strategies
    • webhooks.md — Event monitoring
    • websockets.md — WebSocket subscriptions
    • laserstream.md — gRPC streaming
    • wallet-api.md — Wallet analysis and identity
    • enhanced-transactions.md — Transaction history and parsing
    • onboarding.md — Account setup and signup flow

​
Learn More

Helius MCP

The MCP server that powers this skill’s tools

Claude Code Plugin

One-click install of MCP + skills

DFlow Trading Skill

Add DFlow trading APIs on top of Helius

GitHub

Source code and issue tracking