Solana JSON-RPC API
JSON-RPC API for interacting with the Solana blockchain. Provides methods for reading account data, submitting transactions, subscribing to account/program events via WebSocket, and querying blockchain state. Hosted by providers like Helius, QuickNode, Alchemy, or Solana's own public endpoints.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
HTTPS/WSS enforced. Private keys for transaction signing must be managed client-side — no key custody. API keys from providers are not scoped. Validator network provides Byzantine fault tolerance.
⚡ Reliability
Best When
You're building agents that interact with the Solana ecosystem (DeFi, NFTs, token programs) and need read/write access to on-chain state.
Avoid When
You're building on Ethereum or EVM-compatible chains — use ethers.js/viem + Alchemy/Infura instead.
Use Cases
- • Read token balances, NFT ownership, and account state for agent financial analysis and portfolio tracking
- • Submit Solana transactions (token transfers, DeFi interactions, NFT mints) as part of agent execution workflows
- • Subscribe to program account changes via WebSocket to trigger agent workflows on on-chain events in real time
- • Query transaction history and program logs for agent-driven audit and reconciliation workflows
- • Fetch SPL token metadata and mint information for agent inventory management
Not For
- • High-frequency trading requiring sub-millisecond latency — Solana's 400ms slot time sets a floor on confirmation latency
- • Ethereum-compatible (EVM) operations — Solana uses a different account model and is not EVM-compatible
- • Long-term historical data queries — full historical data requires archive nodes or third-party indexers like Helius
Interface
Authentication
Public Solana RPC endpoints require no auth but are heavily rate-limited. Production use requires an API key from a provider (Helius, QuickNode, Alchemy, etc.) passed as query param or in the JSON-RPC URL. No standard auth header — provider-specific conventions.
Pricing
Always use a provider API (Helius, QuickNode, Alchemy) for production — public Solana endpoints are unreliable and heavily throttled.
Agent Metadata
Known Gotchas
- ⚠ Transactions reference a 'recent blockhash' that expires after ~150 blocks (~60 seconds) — agents must obtain a fresh blockhash before signing and submitting transactions
- ⚠ Account data is base64-encoded and schema varies by program — agents must use the correct borsh or custom decoder for each program's account layout
- ⚠ Solana uses 'lamports' (1 SOL = 1,000,000,000 lamports) for all native token amounts — agents must handle lamport math to avoid overflow/underflow errors
- ⚠ WebSocket subscriptions ('accountSubscribe', 'programSubscribe') use a different RPC endpoint than HTTP — agents need separate connection management for subscriptions
- ⚠ Transaction confirmation is probabilistic — 'confirmed' status means 67% stake confirmation but 'finalized' (32-slot delay) is required for irreversible certainty
- ⚠ Program-derived addresses (PDAs) require off-chain calculation before use — agents must compute PDA addresses via the SDK, not query them from the chain
- ⚠ getTokenAccountsByOwner returns all SPL token accounts but each call has a 100-account default limit — agents holding many token types must paginate
Alternatives
Full Evaluation Report
Detailed scoring breakdown, competitive positioning, security analysis, and improvement recommendations for Solana JSON-RPC API.
Scores are editorial opinions as of 2026-03-06.