We check live prices at Alchemy, Infura, QuickNode, Ankr, and the other trusted providers — route your request to whichever is cheapest this second. That's it. No tokens, no random nodes, no marketing wrapper.
// One URL. Your keys OR our free tier. Our hook routes to cheapest. constrpc = 'https://rpc.metercall.ai/eth'; constblock = awaitfetch(rpc, {
headers: { 'X-Mainframe-Key': 'mf_your_key' },
body: 'eth_blockNumber'
}); // Bring your Alchemy/Infura keys OR use our aggregated free tier. // Mainframe hook picks the cheapest route that hits your SLA.
Chainlist.org curated public nodes for every chain
FREE · Community-run
⚡ How dynamic routing works
YOUR APP
eth_call
Uniswap V3 pool read
→
MAINFRAME
Route decision
84ms · cheapest SLA match
→
BEST PROVIDER
Cloudflare
Free · 64ms · 99.99% UP
💰 Saved: vs Alchemy premium. Over 10M req/mo = $1,500 saved.
HOW IT WORKS
Bring your keys, or don't
RPC is just another feature API in Mainframe. You can plug in your existing Alchemy/Infura/QuickNode keys — or use our aggregated free tier. Every call flows through our hook, which picks the cheapest route in real-time.
OPTION A
Use our free tier
Signup → get a Mainframe RPC URL → paste into your dApp. We route every call across 12 providers + public endpoints. Zero config.
# your .env
RPC_URL=https://rpc.metercall.ai/eth
MF_KEY=mf_abc123xyz
✓ 10M requests/mo free · No credit card
OPTION B
Bring your own keys
Already paying Alchemy/Infura/QuickNode? Add your keys to Mainframe. Our hook routes across YOUR providers + our free tier. You control priority.
✓ Use your quota first · Fall back to free tier when limited
Either way: every call runs through the Mainframe hook. We benchmark 12 providers in real-time. Route to cheapest that hits your latency target. Auto-failover if one goes down mid-request. You get one URL — we handle the chaos.
PAYMENT
Pay however you want
No proprietary tokens. No staking. No lockups. Credit card, USDC, ETH, SOL — we take any of it. You pay us a small fee on top of what you'd normally spend. When our routing saves you money, you keep most of the savings.
💳
Credit Card
Stripe · auto-billed monthly
💵
USDC / USDT
On any chain you want
Ξ
ETH / SOL / BTC
Whatever you already hold
🏦
ACH / Wire
Enterprise invoicing
HOW WE MAKE MONEY
Small fee on each request — much less than you'd pay any single provider. You still save because we found you the cheapest route. We keep some of what we saved you. No token games. No lockups.
TIMING ADVISOR
We tell you when to send
Mainframe predicts gas and congestion 2-24 hours ahead using historical + real-time data. Supply + demand model per chain.
Ethereum23 gwei
Current gas · updated 12s ago
⏳ WAIT 3 hours — gas drops to ~8 gwei at 3am UTC (65% savings)
Solana0.000005 SOL
Priority fee · network healthy
✅ SEND NOW — priority fees minimal, fast confirmation (~400ms)
Arbitrum0.08 gwei
L1 gas spike affecting L2
⏳ WAIT 1 hour — L1 congestion clearing, L2 fees will drop 40%
Base0.04 gwei
Normal load, steady
✅ SEND NOW — optimal conditions, stable for next 4-6 hours
WHO USES THIS
Built for every Web3 builder
One RPC URL, all chains. Skip the multi-provider dashboard headache.
🔨
Solo dev / hackathon
Don't manage 5 API keys. One env var for any chain. Free tier handles 99% of weekend projects.
Typical savings: vs single provider
🦄
DeFi protocol
Route price reads to free tier. Route transactions to dedicated nodes. Gas advisor times MEV-sensitive calls.
Typical savings: $2k-$12k/mo
🖼️
NFT project
Mint at optimal gas window (our advisor times it). Metadata served from cache. Works across mint chains.
Typical savings: 40-70% on mint costs
🏦
Wallet / Exchange
Multi-chain balance queries routed for lowest latency. Auto-failover if provider goes down mid-session.
Typical savings: $15k-$80k/mo enterprise
📊
Analytics / Indexer
Heavy archive queries routed to providers with free archive tiers. Bulk reads batched intelligently.
Typical savings: $500-$8k/mo on archive
🎮
Web3 Gaming
In-game transactions on appchains. Solana-first for fast games, Base/Arbitrum for economy. One integration.