Layer 4. One API. Every chain.
The blockchain of blockchains. 30+ chains. Every protocol. Pay per call. One endpoint, instead of 30 RPC providers, 50 SDKs, and a weekend of your life.
How it works
Your agent hits one URL. L4 does the routing, the retries, the RPC juggling, and the meter reading. You ship.
Your code, your agent, or a curl. Same endpoint shape for every chain.
We pick the right chain(s), the right protocol, the right RPC. Retry on fail, balance across providers.
One line item, one invoice. No LLM tax — this runs server-side, not through Claude.
Dashboards, bots, aggregators, wallets. The hard part is done.
Chains covered
EVM, non-EVM, L1, L2, L3 — one surface. See live status for all chains →
What you can build
Every one of these is a weekend project on L4. A month on any other stack.
Multi-chain wallet dashboard
One address → balances across every chain, USD-rolled.
Unified gas comparator
"Where's gas cheapest right now?" — one call, 10 chains.
Cross-chain portfolio tracker
Positions across L1s, L2s, and CEXes, aggregated.
Chain-agnostic ENS lookup
One name resolves on every chain that supports it.
DeFi yield aggregator
Pipe the top 500 pools by APY into a single feed.
NFT floor comparator
Same collection, priced across chains + marketplaces.
Stablecoin supply dashboard
USDC, USDT, DAI circulating on every chain in real time.
Cross-chain alert bot
"Ping me when USDC on Base > $500M." One webhook.
Cross-chain smart router
Cheapest / fastest / safest path A→B across ramps, bridges, and swaps.
Decentralized storage layer
IPFS, Arweave, Filecoin — one API, three tiers. Cheap & permanent.
Auto-offset every call.
One toggle. Retires a fractional renewable energy credit on every call. ESG-ready receipts.
Try one call
Same payload shape from any language. Your agent and your terminal get identical responses.
# cross-chain balance for vitalik.eth — one call, every chain
curl "https://metercall.ai/v1/l4/cross/balance/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" \
-H "Authorization: Bearer $MC_KEY"Build on Layer 4.
Get an API key, make your first cross-chain call in under 60 seconds, and ship.