Helius MCP
OfficialServer Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| HELIUS_API_KEY | No | Your Helius API key for accessing Solana blockchain data. | |
| HELIUS_NETWORK | No | The Solana network to connect to (e.g., Mainnet Beta or Devnet). | Mainnet Beta |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| heliusAccountB | Account setup, API keys, signup, plans, and billing. Use for pricing or account state, not per-method rate limits. |
| heliusWalletA | Wallet-centric balances, holdings, identity, and wallet history. Use for portfolio views, not raw token accounts. |
| heliusAssetC | Assets, NFTs, collections, proofs, and token holders. Use for DAS ownership or metadata, not transaction history. |
| heliusTransactionC | Parsed transactions and wallet transaction history. Use for activity analysis, not raw account state. |
| heliusChainC | Raw chain state, token accounts, stake reads, blocks, network status, priority fees, and transaction simulation. Use for token accounts or blocks, not wallet portfolio summaries. |
| heliusStreamingC | Webhook CRUD and live subscription configuration. Use for actual webhook/subscription setup, not how-to guides. |
| heliusKnowledgeA | Docs, guides, pricing references, troubleshooting, source, blog, and SIMD research. Use for guides, rate limits, or errors, not live mutations. |
| heliusWriteB | Mutating SOL/token transfer and staking actions. Use for sends or staking, not read-only queries. |
| heliusCompressionB | Compressed account, proof, balance, and compression history queries. Use for zk-compression state, not standard DAS assets. |
| expandResultC | Expand a prior summary-first result by resultId, section, range, page, or continuation. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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