Resilient multi-chain RPC proxy for modern blockchain apps

One entry point for RPC, REST, and WebSocket. Automatic best-node selection, live health checks, failover, built-in gas oracles (Ethereum, Polygon, BSC, Arbitrum, Optimism), state gossip, and a secure admin API. Ship fast on Kubernetes and scale horizontally.

Active networks

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Healthy nodes

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Avg latency (ms)

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Quick start

HTTP: https://api.mezzium.net/{network}/...

RPC / REST

WebSocket: wss://api.mezzium.net/ws/{network}

WS proxy

Public helpers: use unified gas endpoint https://api.mezzium.net/{network}/gas (examples: /ethereum/gas, /polygon/gas).

Shortcuts: /ethereum/balance/0x..., /sol/slot

Adapters

Admin: /admin/* with key

Admin API

Full documentation available in Swagger: api.mezzium.net/swagger/

Load balancing & failover

Select the fastest healthy node by priority, drop fatally unhealthy upstreams, and automatically retry.

Health monitoring

Periodic checks across protocols (EVM, BTC, TRX, SOL, DOGE, LTC), domain rate limits, Prometheus metrics on /metrics.

Live gas

Local computation and official stations available via /{network}/gas (examples: /ethereum/gas, /polygon/gas).

Service status

Ping: — ms

Metrics

Active networks

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Healthy nodes

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Health %

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Last updated

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Metrics are derived from the service metrics endpoint; preferred marks the endpoint chosen by the cluster.

Networks & active nodes

For each network we show how many public RPC endpoints were discovered and the cluster's preferred endpoint (the endpoint chosen by the balancer)