Chainstack
Chainstack is a managed multi-chain RPC and node infrastructure platform supporting 70+ blockchain protocols including Ethereum, Solana, Bitcoin, BNB Smart Chain, Polygon, Arbitrum, Optimism, Base, Avalanche, TON, TRON, Starknet, zkSync Era, Hyperliquid, Monad, and many more. The platform exposes a REST Platform API for organization, project, network, and node lifecycle management, JSON-RPC endpoints for every supported chain, a Faucet API for testnet funding, real- time Solana streaming via Yellowstone gRPC, low-latency Trader Nodes via bloXroute, archive data with debug and trace namespaces, MEV protection, Flashblocks preconfirmations, and a Chainstack MCP server for AI agents.
APIs
Chainstack Platform API
REST API at api.chainstack.com for managing your organization, projects, networks, and managed nodes. Bearer-token authenticated via per-user API keys. v2 endpoints recommended;...
Chainstack Faucet API
Public Chainstack-operated testnet faucet for Hoodi, Sepolia, BNB Testnet, zkSync Testnet, Scroll Sepolia, and Polygon Amoy. JWT-authenticated POST /v1/faucet/{chain} request en...
Chainstack Ethereum Node API
Chainstack-managed Ethereum mainnet and testnet JSON-RPC nodes. 40+ documented eth_/net_/web3_ methods plus debug_/trace_ namespaces on archive nodes. Global, Dedicated, Unlimit...
Chainstack Ethereum Beacon Chain API
Ethereum consensus-layer Beacon Chain REST API exposed through Chainstack-managed nodes. Validator, state, block, sync, and node-info endpoints.
Chainstack Solana Node API
Chainstack-managed Solana JSON-RPC nodes (mainnet, devnet, testnet) covering 52+ documented RPC methods plus Yellowstone gRPC Geyser plugin for real-time account, transaction, a...
Chainstack Bitcoin Node API
Chainstack-managed Bitcoin Core nodes exposing the canonical Bitcoin JSON-RPC API. 40 documented methods covering blocks, transactions, wallet, mining, network, and raw-transact...
Chainstack BNB Smart Chain Node API
Chainstack-managed BNB Smart Chain JSON-RPC nodes. 43+ documented EVM methods plus archive support on dedicated nodes.
Chainstack Polygon Node API
Chainstack-managed Polygon mainnet (PoS) and Polygon Amoy testnet JSON-RPC nodes with debug/trace namespaces available on archive nodes.
Chainstack Arbitrum Node API
Chainstack-managed Arbitrum One and Arbitrum Sepolia JSON-RPC nodes. 51 documented eth_/arb_ methods.
Chainstack Optimism Node API
Chainstack-managed Optimism mainnet and Sepolia JSON-RPC nodes with Flashblocks preconfirmation support (250 ms). 48 documented eth_/op_ methods.
Chainstack Base Node API
Chainstack-managed Base mainnet and Sepolia JSON-RPC nodes. 60 documented eth_/op_ methods plus Flashblocks (200 ms preconfirmations).
Chainstack Avalanche Node API
Chainstack-managed Avalanche C-Chain JSON-RPC nodes and Subnets support.
Chainstack Fantom Node API
Chainstack-managed Fantom Opera mainnet JSON-RPC nodes.
Chainstack Gnosis Node API
Chainstack-managed Gnosis Chain JSON-RPC nodes.
Chainstack Cronos Node API
Chainstack-managed Cronos JSON-RPC nodes.
Chainstack Aurora Node API
Chainstack-managed Aurora (EVM on NEAR) JSON-RPC nodes.
Chainstack Ronin Node API
Chainstack-managed Ronin JSON-RPC nodes for the Axie Infinity gaming chain.
Chainstack TRON Node API
Chainstack-managed TRON full and Solidity nodes with 150+ documented HTTP API methods.
Chainstack TON Node API
Chainstack-managed The Open Network (TON) HTTP API nodes. 59 documented methods covering accounts, blocks, transactions, jettons, and NFTs.
Chainstack Starknet Node API
Chainstack-managed Starknet JSON-RPC nodes.
Chainstack zkSync Era Node API
Chainstack-managed zkSync Era JSON-RPC nodes with zks_ namespace extensions.
Chainstack Polygon zkEVM Node API
Chainstack-managed Polygon zkEVM JSON-RPC nodes with zkevm_ namespace extensions.
Chainstack Hyperliquid Node API
Chainstack-managed Hyperliquid HyperCore and HyperEVM nodes. 185 documented HTTP methods covering perpetual DEX state, orders, fills, and EVM RPC.
Chainstack Monad Node API
Chainstack-managed Monad JSON-RPC nodes (high-throughput EVM with parallel execution).
Chainstack Plasma Node API
Chainstack-managed Plasma JSON-RPC nodes (stablecoin-optimized chain).
Chainstack Tempo Node API
Chainstack-managed Tempo JSON-RPC nodes (emerging EVM chain).
Collections
Pricing Plans
Rate Limits
FinOps
Chainstack Finops
FINOPSEvent Specifications
Chainstack RPC WebSocket APIs
AsyncAPI 2.6 specification for Chainstack's JSON-RPC WebSocket (WSS) subscription APIs. Chainstack-managed nodes expose a persistent WebSocket endpoint per node that accepts JSO...
ASYNCAPI