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Live on 36 networks.

One API key, one URL pattern, every chain below. The latency you see is measured against the live gateway, right now.

Live gateway round-trip latency, sampled by our monitors every second.
ApeChainapechain · WS22 msFULL ARCHIVEDEBUGAptosaptos · WS14 msSYNTHETIC WSArbitrum Onearbitrum · WS19 msPARTIAL ARCHIVE (SINCE APR 2026)DEBUGAvalancheavalanche · WS19 msDEBUGBasebase · WS19 msFULL ARCHIVEDEBUGBitcoinbitcoin · WS27 msSYNTHETIC WSBNB Smart Chainbnb · WS22 msFULL ARCHIVETRACE + DEBUGBOBbob · WS27 msDEBUGCelocelo · WS23 msFULL ARCHIVEDEBUGEnjinenjin · public26 msRECENT STATEEthereumethereum · WS19 msRECENT STATEEthereum Beaconethereum-beacon · WS47 msSYNTHETIC WSInkink · WS23 msRECENT STATEKatanakatana · WS28 msDEBUGLinealinea · WS23 msRECENT STATEMantlemantle · WS26 msPARTIAL ARCHIVE (SINCE MAY 2026)DEBUGMegaETHmegaeth · WS28 msFULL ARCHIVETRACE + DEBUGMonadmonad · WS23 msDEBUGOptimismoptimism · WS20 msDEBUGPlasmaplasma · WS28 msFULL ARCHIVEDEBUGPolygonpolygon · WS22 msRECENT STATERobinhood Chainrobinhood · WS25 msFULL ARCHIVEDEBUGScrollscroll · WS19 msFULL ARCHIVEDEBUGSolanasolana · WS28 msRECENT STATESonicsonic · WS21 msFULL ARCHIVETRACE + DEBUGStarknetstarknet · WS39 msRECENT STATESuisui · WS · gRPC27 msNATIVE GRPCSYNTHETIC WSTrontron · WS · gRPC41 msNATIVE GRPCSYNTHETIC WSUnichainunichain · WS28 msDEBUGX Layerxlayer · WS21 msDEBUGzkSync Erazksync · WS23 msPARTIAL ARCHIVE (SINCE JAN 2025)Ethereum Hoodiethereum-hoodi · WS38 msRECENT STATETESTNETEthereum Hoodi Beaconethereum-hoodi-beacon · WS29 msSYNTHETIC WSTESTNETEthereum Sepoliaethereum-sepolia · WS26 msRECENT STATETESTNETEthereum Sepolia Beaconethereum-sepolia-beacon · WS15 msSYNTHETIC WSTESTNETPolygon Amoypolygon-amoy · WS26 msRECENT STATETESTNET

One URL. Swap the slug.

The only thing that changes between chains is the path segment. Same key, same JSON-RPC semantics, same error format. Switch chains by editing a single string.

Connection details in the docs →
Same URL, different chaincopy & swap
https://endpoints.boltrpc.io/rpc/KEY/ethereum
https://endpoints.boltrpc.io/rpc/KEY/arbitrum
https://endpoints.boltrpc.io/rpc/KEY/base
https://endpoints.boltrpc.io/rpc/KEY/polygon
https://endpoints.boltrpc.io/rpc/KEY/solana

Integrated in 60 seconds.

  1. 1
    Start your trial.

    5M request units free for 14 days, no credit card. Your API key is ready within seconds.

  2. 2
    Pick a chain.

    Swap the slug in the URL for the network you need: ethereum, arbitrum, solana and 33 more.

  3. 3
    Make the call.

    Point your existing JSON-RPC client at the endpoint. Your production code stays the same. Only the URL changes.

eth_blockNumber
curl -X POST https://endpoints.boltrpc.io/rpc/KEY/ethereum \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

Same pattern for every chain. Change the slug, keep everything else.

In production atChainlinkEnjinTiingoGains Network2B+ request capacity per day

Public, shared or dedicated RPC endpoint?

Most teams start on a public RPC endpoint and outgrow it fast: shared rate caps, inconsistent latency, no support when something breaks. The next decision is what to move to. Our guide to shared vs dedicated RPC nodes breaks down the cost and performance trade-offs, while decentralized RPC vs dedicated RPC covers when a distributed provider network helps and when it gets in the way.

Every endpoint in the list above runs on dedicated BoltRPC infrastructure with automatic multi-region failover: one API key, published request-unit weights, no per-request throttling within your quota.

Network questions, answered.

Which blockchain networks does BoltRPC support?

36 networks are live today, covering the major EVM L1s and L2s (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche, Linea, Scroll, zkSync Era) plus Solana, Starknet, Bitcoin, Sui, Aptos and more. The full live list with live latency is at the top of this page.

How is the latency on this page measured?

Our monitors run a lightweight RPC call (a standard read method) against every endpoint about once per second, around the clock, and the page mirrors those measurements live. What you see is the real gateway round-trip at this moment, not a periodic average.

Can I request a new blockchain network?

Yes. Our infrastructure is operator-neutral, so adding a chain is usually a matter of days once there is a use case behind it. Reach out via the contact form with the chain name and the workload you are planning, and we will scope it with you.

What happens during hard forks and network upgrades?

Our node operator (Matrixed.Link, ISO/IEC 27001:2022 certified) tracks upgrade schedules for every supported chain and rolls out client updates ahead of fork blocks. You do not need to change the URL, the API key or your client code. If anything requires your attention we announce it in advance.

Do you support Ethereum testnets?

Yes. Testnets are available on every paid plan using the same URL pattern, just with the testnet slug (for example ethereum-sepolia, ethereum-hoodi, polygon-amoy). Testnet traffic counts against your monthly request units the same way as mainnet.

Do you provide blockchain archive data?

Archive access (full historical state, debug_*, trace_*) is available on the Enterprise plan and on select networks on request. If your workload only needs recent state, every standard endpoint already covers it.

Is WebSocket included on every plan?

HTTPS and WebSocket endpoints share the same URL pattern and are both included on every paid plan. Use WebSocket when you need to subscribe to new blocks, pending transactions, or contract events without polling.

Do you support gRPC?

Yes. Sui (sui.rpc.v2, Beta) and Tron (protocol.Wallet and the finalized WalletSolidity mirror) are served over native gRPC on endpoints.boltrpc.io:443 with your API key in the x-api-key metadata header, plus gRPC-Web for browsers at https://endpoints.boltrpc.io/grpc/sui and /grpc/tron. Use the official generated clients unchanged. A unary gRPC call costs the same request units as the matching JSON-RPC or HTTP method; Sui streams bill by delivered data at 1 RU per 24 KB. Chains with a gRPC door carry a "Native gRPC" chip in the list above.

Do BoltRPC RPC endpoints have rate limits?

No rate limit on monthly plans. The free trial and on-demand usage without a plan are limited to 100 requests per second (burst 200). On a monthly plan you pay for monthly request units, not for bursts: if your traffic spikes, requests still go through at full speed until you hit your monthly RU allocation.

Can one API key access every supported blockchain?

Yes. A single key authenticates you across every supported network. You do not provision a new key per chain, and you do not need separate billing per chain.

How do you handle reliability?

Automatic failover is built in on every plan. A node that fails, falls behind or stops advancing is taken out of rotation and traffic moves to a healthy one with no code changes on your side; WebSocket subscriptions replay what they missed across the switch. Custom SLA terms are available on Enterprise and Custom contracts.

Every chain, one key.

Start the trial and hit any of the 36 networks above in the next five minutes.

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