One API. One bill.
Every provider.
FlexYield routes your JSON-RPC traffic across multiple upstream providers with automatic failover — one key, one meter, one bill, measured in public. No wallet, no crypto required.
ETHEREUM
BASE
ARBITRUM
OPTIMISM
POLYGON
SOLANA
ETHEREUM
BASE
ARBITRUM
OPTIMISM
POLYGON
SOLANA
Try it live — no signup
Pick a chain and a method, hit send — the request goes through the real gateway: same relay, same automatic failover, same upstreams. You'll see the response time and which provider actually served you.
// the JSON-RPC response appears hereDemo methods only — sign up free for the full JSON-RPC surface with your own key. Full reference in the docs.
The problem
Web3 infrastructure is a vendor-juggling act.
Going direct
Every chain and every workload means another provider: separate keys, separate dashboards, separate invoices — and when your provider goes down, so do you.
- A key and a bill per vendor
- No failover when one provider fails
- Retail pricing on every contract
- Hours lost comparing and migrating
One API through FlexYield
Point your app at a single endpoint. We route every request to the best healthy upstream, fail over automatically, and pass wholesale savings on.
- One key, one bill across providers
- Automatic multi-provider failover
- Wholesale rates passed on to you
- Live volume, latency and spend per key
How it works · four steps to one bill
Create your key
Sign up with an email address and get an API key in under a minute. Free tier included — no wallet, no sales call.
Point your app at one endpoint
Swap your provider URL for ours. Standard JSON-RPC 2.0 — no SDK, no code changes beyond the URL.
curl -X POST https://flexyield.io/rpc/eth_mainnet \
-H "Authorization: Bearer $FLEXYIELD_KEY" \
-d '{"jsonrpc":"2.0","id":1,
"method":"eth_blockNumber","params":[]}'We route. We fail over.
Every request goes to the best healthy upstream with automatic failover. Track volume, latency and spend live in your dashboard.
We cache — hits are free
An identical request inside the published TTL is answered from our cache in about a millisecond and costs 0 units. Rate windows still apply; state-dependent reads are never cached — what we cache.
Measured, not promised
Live on /status →| Chain | Uptime 24h | p50 | p95 |
|---|---|---|---|
Arbitrum One arbitrum_one |
100% | 55 ms | 223 ms |
Base Mainnet base_mainnet |
100% | 79 ms | 460 ms |
Ethereum Mainnet eth_mainnet |
100% | 71 ms | 1,097 ms |
OP Mainnet optimism_mainnet |
100% | 58 ms | 233 ms |
Polygon PoS polygon_pos |
100% | 54 ms | 137 ms |
Solana Mainnet solana_mainnet |
100% | 49 ms | 281 ms |
Continuous synthetic probes, every 5 minutes per endpoint — the same report that drives the public status page. Figures update as the data does.
Capabilities
RPC today. More behind the same key.
RPC gateway
Multi-provider JSON-RPC relay with automatic failover, per-key metering and tiered rate limits.
Available nowThe Toolbox
Gas oracle, tx status, ENS, on-chain prices, verified ABIs, calldata decoding, EVM utilities — every tool one API call (and one MCP tool for agents), on every tier — 1 unit per call (transaction status 2), and repeated reads hit the cache for 0.
Available nowAgents pay per call — no signup
Machine customers reach the whole gateway with x402: read the measured route menu, settle on-chain, get served — no account, no key. Prices from our own instruments, not a supplier's card.
Testnet liveOracle data feeds
First feeds live in the Toolbox (Chainlink on-chain prices); broader market data follows the same key and bill.
First feeds liveCross-chain bridging
Asset transfers routed like everything else: one interface.
On the roadmapCompute, storage & beyond
The same aggregation model, applied to every kind of decentralized infrastructure.
The long viewRoadmap
Building in public.
MVP live
- Multi-provider RPC gateway in production
- Free tier — sign up and relay today
- Card-billed paid plans + live usage dashboard
- Premium credentialed providers serving paid plans
- Toolbox live: gas, tx status, ENS, prices, ABIs, utilities
- Agent fleet keys with budgets, MCP + agent skill file
- x402 agent payments live on testnet
- Uptime, latency and unit weights published
First revenue
- Founding customers on paid plans
- Founding-customer pricing window
- Hands-on onboarding for design partners
- x402 payments: mainnet switch-on
- Prepaid unit packs — pay-as-you-go without surprises
Prove it
- Customer references
- Data API activates on premium data supply
- Webhooks & event streams
- WebSocket subscriptions
- Dedicated-EU routing option
More services
- More chains by demand — BNB first
- Archive depth & historical backfill
- Broader oracle & market data feeds
- Open-web tools for agents: search, fetch, extract
- Cross-chain bridging
The long view
- One interface for decentralized infrastructure
- Compute, storage, bandwidth
- Built for humans, bots and agents
The long view
Built for what comes next
The gateway generates real revenue today. It is also the foundation for something much larger.
Every service we add makes one interface more useful — and, over time, that interface can reach far beyond RPC. Our long-term direction is to make FlexYield the single place to source any kind of decentralized infrastructure: not only RPC, but oracles, bridging, compute, storage, bandwidth and beyond. One account. One bill. Every provider.
One dashboard, zero integration hell
Developers and teams source everything they need from a single, unified interface — no juggling a dozen providers, APIs and invoices.
On-demand capacity at machine speed
Trading and automation systems tap dedicated, low-latency infrastructure the instant they need it, and pay only for what they use.
Infrastructure that settles itself
Autonomous agents discover, provision and settle for infrastructure entirely in code — a market designed for software that acts on its own. Full MCP support today.
Run a fleet like you mean it
Live today
- One key per agent, each with its own monthly budget — enforced on the hot path
- Over budget? A clear refusal with an upgrade doorway; the rest of the fleet keeps working
- Mint, cap and revoke keys over MCP — no dashboard required
- Per-agent volume, latency and error statistics from the same tools
- An agent skill file your agent reads before its first call
- Repeated reads served from cache at 0 units
- x402 pay-per-use, rehearsing on testnet
- Claim an existing agent by wallet signature and equip it in minutes
On the roadmap
- Sub-key lineage with per-task cost attribution
- Spend caps that cascade from owner to sub-agents
- Agent behaviour statistics
- Prepaid packs agents top up via API
- Policy-based budgets tied to counterparty trust
The fences agents actually fear are the product we build first.
Revenue comes first — every expansion is funded by the service before it. The bigger picture is simply where that leads.
Early access
Get on the list.
The RPC gateway is live and free to try today. The waitlist is for what's next: new capabilities, new chains, and founding-customer pricing windows. Tell us who you are so we build the right thing first.
Run infrastructure? Sell through us.
FlexYield buys capacity wholesale and routes real demand to providers that stay healthy. One integration, metered payouts.
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