Skip to main content
The Helius MCP server gives AI tools direct access to Helius APIs through 60+ tools — querying Solana, sending transactions, managing webhooks, streaming data, wallet analysis, and autonomous account signup.

60+ Live Tools

DAS API, RPC, transfers, webhooks, streaming, wallet analysis, priority fees, onboarding, and docs

Autonomous Signup

Create a Helius account and get an API key entirely within Claude — no browser needed

Real-Time Data

Subscribe to Enhanced WebSockets and LaserStream gRPC directly from your AI tool

Any MCP Client

Works with Claude Code, Claude Desktop, Cursor, VS Code, Windsurf, and any MCP-compatible tool

​
What is MCP?

The Model Context Protocol (MCP) is an open-source standard introduced by Anthropic that allows AI models to securely connect with external data sources, tools, and APIs. It uses a client-server architecture where a host (like Claude) connects to an MCP server, allowing the AI to query databases, call APIs, or execute actions through a universal, standardized interface. Why this matters for Helius: The MCP gives Claude direct access to tools like getBalance, parseTransactions, and getAssetsByOwner. Without it, Claude has to guess at API responses or make numerous curl requests to gain context. The MCP allows Claude to actually interact with Solana through Helius because it has the relevant tooling — live blockchain data, transaction submission, webhook management, and more.
The Helius docs site at helius.dev/docs also exposes a separate MCP server auto-generated by Mintlify. That server is scoped to documentation search only. helius-mcp documented here is the comprehensive server covering all Helius and Solana functionality.

​
Quick Start

1

Add the MCP server

claude mcp add helius npx helius-mcp@latest
2

Configure your API key

If you already have a key:
export HELIUS_API_KEY=YOUR_API_KEY
Or set it inside Claude by calling the setHeliusApiKey tool. API keys are resolved in this order:
  1. setHeliusApiKey tool call within the session
  2. HELIUS_API_KEY environment variable
  3. ~/.helius/config.json (set via the Helius CLI)
If you need a new account: See Autonomous Signup below.
3

Start using tools

Ask questions in plain English — the right tool is selected automatically:
  • “What NFTs does this wallet own?”
  • “Parse this transaction: 5abc...”
  • “Get the balance of Gh9ZwEm...”
  • “Send 1 SOL to 7xKp...”
  • “Create a webhook for this address”

​
Connecting to the Helius MCP Server

Run the following command:
claude mcp add helius npx helius-mcp@latest
Or add to your project’s .mcp.json:
{
  "mcpServers": {
    "helius": {
      "command": "npx",
      "args": ["helius-mcp@latest"]
    }
  }
}
Verify with:
claude mcp list
Want skills + MCP in one step? Install the Helius plugin instead:
/plugin marketplace add helius-labs/core-ai
/plugin install helius@helius-labs

​
Autonomous Signup

Create a Helius account entirely within your AI tool — no browser needed:
1

Generate a keypair

The AI calls the generateKeypair tool — it creates a Solana wallet and returns the address.
2

Fund the wallet

Send ~0.001 SOL (transaction fees) + 1 USDC (signup payment) to the wallet address.
3

Verify balance

The AI calls checkSignupBalance to confirm funds arrived.
4

Create account

The AI calls agenticSignup — processes the USDC payment, creates the Helius account, and configures the API key automatically.
Or do the same from the terminal with the Helius CLI: 
npx helius-cli@latest keygen     # Generate keypair
# Fund the wallet address with ~0.001 SOL + 1 USDC
npx helius-cli@latest signup      # Create account

​
Tool Catalog

The MCP server exposes 60+ tools across 14 categories — onboarding, DAS API, RPC, transfers, webhooks, WebSockets, LaserStream, wallet analysis, billing, Solana knowledge, and docs.

Full Tool Catalog

All 60+ tools organized by category with descriptions for every tool

​
Network Configuration

The MCP server defaults to mainnet-beta. Switch to devnet via environment variable: 
export HELIUS_NETWORK=devnet
Or call the setNetwork tool within a session.

​
Skills

Skills are expert instruction sets that teach Claude how to route your requests to the right MCP tools and reference files. They go beyond raw tool access — they include routing logic, correct SDK patterns, and rules that prevent common mistakes.

Skills Overview

Four skills available: Build (general Solana dev), Phantom (frontend dApps), DFlow (trading apps), and SVM (protocol internals)

​
Learn More

Claude Code Plugin

One-click install of MCP + skills

Helius CLI

Command-line account management

MCP Specification

Learn about the Model Context Protocol standard

helius-mcp on npm

Package details and version history