# RPC Relay Pro

> Local-first Ethereum, Base, Arbitrum, Optimism, and Polygon JSON-RPC acceleration for agents, searchers, trading systems, and latency-sensitive applications.

Canonical site: https://rpc-relay.pages.dev/
Pricing: Free edge evaluation at 10 calls/minute. Pro is $49 USDC/month with 300 calls per 10 seconds and the local accelerator.

Pro includes non-submitting transaction simulation, upstream-dependent trace methods, signed confirmed-log webhooks, and the public @rpc-relay/sdk package. Transaction submission, paymasters, and gas sponsorship are disabled.

## Verified performance

- Fresh-install warm finalized read proof: 300/300 valid, 1.55ms p50, 2.84ms p95, 3.32ms p99.
- Separate concurrency-32 audit: 10,076 sustained requests/second on the measured Mac, with 100% valid responses in that run.
- These are workload- and machine-specific warm localhost measurements. Cold reads still include network and upstream latency.

## Product pages

- Benchmarks: https://rpc-relay.pages.dev/benchmarks/
- Ethereum MCP server: https://rpc-relay.pages.dev/mcp-ethereum/
- RPC latency guide: https://rpc-relay.pages.dev/ethereum-rpc-latency/
- Reorg-safe caching: https://rpc-relay.pages.dev/reorg-safe-cache/
- WebSocket transport: https://rpc-relay.pages.dev/websocket-ethereum-rpc/
- Pricing: https://rpc-relay.pages.dev/pricing/
- Platform API: https://rpc-relay.pages.dev/platform/

## Machine-readable evidence

- https://rpc-relay.pages.dev/benchmark-proof.json
- https://rpc-relay.pages.dev/tier-audit-proof.json