How to Use the Helius (Solana) MCP in Cursor

Q: How do I configure the Helius (Solana) MCP Server for my Cursor workspace?

Create an mcp.json file in your project root directory. Add the server details, enable Agent mode, and you can start querying on-chain data immediately.

Q: Can Cursor use Helius (Solana) to write transaction parsing logic?

It does exactly that. By calling parsetransactions on a live signature, the editor sees the exact JSON structure and writes the corresponding interface types for your codebase.

Q: Will Helius (Solana) help me estimate fees in Cursor?

You can test your serialized transactions against getpriorityfeeestimate during development. The agent will show you the required micro-lamports so you can hardcode a safe default or build a dynamic fee fetcher.

Inject real-time Solana wallet balances and transaction history straight into your Cursor code.

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Connect Helius (Solana) MCP to Cursor

Create your Vinkius account to connect Helius (Solana) to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Helius (Solana) with Cursor

Ask AI about this MCP

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Claude

Perplexity

Map Token Accounts in Agent Mode

`get_token_accounts` grabs every SPL token associated with a specific mint or owner while you write your frontend components. Cursor uses this live data to populate your UI state variables with actual mainnet values instead of placeholder arrays. If you need USD valuations, `get_wallet_balances` pulls the current fiat worth of those tokens. The AI client formats the response and writes the exact parsing logic required for your dashboard to display it correctly.

Helius (Solana) MCP Server Error Handling

`search_assets` filters through thousands of NFTs using advanced parameters right from your editor sidebar. When you ask Cursor to build an NFT gallery, it hits this MCP tool to test the query structure before generating the fetch code. You get instant feedback on your API calls. If your parameters are wrong, the agent reads the failure, corrects your request payload, and rewrites the function to match the actual schema.

Analyze On-Chain Transfers

`get_wallet_transfers` isolates incoming and outgoing token movements for any address. You instruct the agent to build a transaction indexer, and it tests the logic against real historical transfers pulled directly from the chain. Combine this with `get_wallet_history` to fetch the raw signatures. Cursor reads the output, identifies the specific instruction layout, and generates the exact TypeScript types needed to decode the payload in your app.

Setup guide

Set up Helius (Solana) MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Helius (Solana) MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Helius (Solana) transactions." If the MCP tools are loaded correctly, Cursor will call the Helius (Solana) tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "helius-solana-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Common questions about Helius (Solana) MCP in Cursor

Create an `mcp.json` file in your project root directory. Add the server details, enable Agent mode, and you can start querying on-chain data immediately.

It does exactly that. By calling `parse_transactions` on a live signature, the editor sees the exact JSON structure and writes the corresponding interface types for your codebase.

You can test your serialized transactions against `get_priority_fee_estimate` during development. The agent will show you the required micro-lamports so you can hardcode a safe default or build a dynamic fee fetcher.

You might be hitting rate limits or exceeding the maximum array size for `get_asset_batch`. Ask the agent to implement pagination or chunk your requests into smaller arrays.

Vinkius runs the integration inside an ephemeral V8 Isolate Sandbox. Your specific token account queries and wallet identity lookups remain within your local editor session and are destroyed once the process terminates.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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