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 |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| 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 | |
TDQS
Scored across 10 tools
Each tool has a clearly distinct domain (e.g., Asset vs Compression, Transaction vs Wallet), and their descriptions explicitly state what to use and what not to use, eliminating ambiguity.
Nine tools follow the 'helius<Category>' pattern (e.g., heliusAccount, heliusChain), but 'expandResult' deviates, breaking full consistency. Casing is uniform (camelCase).
With 10 tools, the set is well-scoped for a comprehensive Solana blockchain API, covering accounts, assets, chain state, compression, transactions, wallets, streaming, writes, and knowledge.
The tool surface is remarkably complete for the domain: account setup, asset queries, raw chain state, compressed state, transaction history, wallet portfolios, webhooks, writes, and documentation – no obvious gaps for common operations.