Private Solana RPC Nodes — New York & Frankfurt

constant-k runs dedicated, bare-metal Solana mainnet RPC nodes in New York and Frankfurt — hardware we build, own and tune ourselves, running a low-latency-tuned mainnet validator client with the full RPC API enabled. No white-labelled capacity, no shared queues: your requests hit the same machines whose live latency we publish on the benchmarks page.

Start for Free Live Benchmarks

What You Get

The Full RPC API, on Hardware We Own

Every standard JSON-RPC method, transaction history included, served from EPYC-class bare metal. We index by program id and SPL token mint/owner, so heavy account queries like getTokenAccountsByOwner return fast instead of timing out.

Transaction Submission That Lands

sendTransaction is forwarded to the next five leaders with an aggressive retry service — the same path our own tooling uses. Transaction rate scales with your plan, from the free tier up to 100 tx/s on Nexus.

Clear Limits, No Surprise Bills

Flat monthly plans from 10 requests/s (Free) to 500 requests/s (Nexus), with every per-method cap published on our plan limits page. Limits apply per region — run both New York and Frankfurt and your effective quota doubles.

ZK Compression Ready

Photon indexer methods — getCompressedAccount, getCompressedTokenAccountsByOwner, getValidityProof and friends — are available on Blade Runner and Nexus plans for teams building on ZK compression.

Pick Your Region, or Use Both

Dedicated hostnames per region (rpc-newyork / rpc-frankfurt) plus a geo-routed endpoint that sends you to the nearest node. Watch both regions live on RPC status and benchmarks.

Connect in Seconds

Any Solana client works unchanged — point it at your endpoint and pass your API key:

curl -X POST "https://rpc-newyork.constant-k.com/?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"getSlot"}'

# or Frankfurt:
# https://rpc-frankfurt.constant-k.com
# or geo-routed: https://rpc.constant-k.com

Solana RPC is included on every plan, starting free. Compare plans on the pricing page, see the full per-method caps on plan limits, and watch live node health on RPC status. Need streaming instead of polling? See Kaldera (Yellowstone gRPC) and Turbo Kaldera (aRPC).