Blockchain And Crypto x402 offerings

Zero-capital flash-loan strategy builder — execution calldata for Aave V3 and Balancer with executor-contract templates. For autonomous DeFi agents.

Perps funding-rate arbitrage — delta-neutral carry across Hyperliquid, Binance, Bybit, GMX and dYdX. For trading and arbitrage agents.

AI inference price arbitrage — every provider serving a given model with live input/output $/Mtoken, blended 3:1 cost, cheapest-vs-dearest spread multiple, quantization caveats. Same open-weights model spans 2-5x across providers; for agents that buy inference this is self-referential spend recovery. Live listings, no LLM.

Flash-loan pool scan — $0.25 deterministic preview of /api/flash: Aave V3 / Balancer pool address, USDC asset address, fee math and (Aave) ABI-encoded flashLoanSimple calldata for a chain/amount. No LLM in the path, no strategy narrative — that is the $0.75 full product. Built for agents with a sub-$0.25 spend cap.

Itemized fee breakdown and net P&L for any arbitrage trade — fees, slippage and gas. For arbitrage and trading agents.

Agent-ready execution package — calldata, gas estimates and a risk assessment for any arbitrage opportunity. Built for autonomous trading agents.

Live CEX spot arbitrage across Binance, Coinbase, Kraken and Bybit — net profit after fees. For crypto trading and arbitrage agents.

Cross-exchange spread tick — ONE $0.02 call returns the live executable spread for a pair across Binance, Coinbase, Kraken, Bybit: best bid venue, best ask venue, spread in bps, and a deterministic TRADE / THIN / NONE verdict. Built for arbitrage monitoring loops; escalate to /api/crypto ($0.07) for the full CEX arbitrage read with fees and transfer paths. 30s freshness, no LLM in the path.

Cross-pool and cross-chain DEX price arbitrage, with flash-loan execution paths. For DeFi and MEV agents.

Returns DEX market data for trading and arbitrage analysis.

Returns live arbitrage pair data for supported networks.

Top live arbitrage opportunities across perps funding, DEX/CEX spot, ETF, commodity and sports, ranked by net expected value. For autonomous arbitrage agents.

Compare Binance and Coinbase order books for net spread at a trade size.

Single node — properties + risk grade only (no neighborhood)

The agent economy on Arc, mapped: every agent in the ERC-8004 identity registry that publishes a registration file (summary.registered and summary.withRegistrationFile carry both counts live; the registry grows, so no count is quoted here) with its name, what it does, the services it sells, its owner, its registration file and whether it accepts x402 payment — plus ?q= to search by capability ('audit', 'escrow', 'data').

Every agent registered on Arc (ERC-8004 identity registry) with its agentId, owner and registration file — the full directory of who is operating on Arc, read from the chain. The free endpoint returns only the count and the first few.

What it really costs to bring USDC into Arc over Circle CCTP, measured from arrivals rather than quoted. Every arrival we hold with its recipient, the amount credited, the fee CCTP took and the transaction, plus observed fees grouped by transfer size. Read from MintAndWithdraw on TokenMessengerV2 0x28b5a0e9C621a5BadaA536219b3a228C8168cf5d, whose event signature we verified by hashing it rather than assuming it, and filtered to the USDC contract on every single log.

The Arc pool graveyard, in full: every Uniswap v4 pool on Arc we measured above a lifetime volume floor (minVolumeUsdc), each with its pool id, its state (empty = zero liquidity at the moment of the read, or alive), its lifetime USDC volume, its fee and its hook. The counts live in summary (poolsMeasured, empty, alive, emptyPct, USDC volume through empty and live pools) and the time of the read in generatedAt.

The EURO rail on Arc, which nothing else reports. Circle EURC (0xbEf5f6d51CB62b58e6A8f77868681825C6fe21c1) is live on Arc and every other Arc data product, ours included until now, is about new launches and the people sniping them. You get every EURC transfer in the scanned window with from, to, amount, block and transaction, the full top-10 net receivers and senders, and the live counts in summary.

Every token symbol on Arc that more than one contract is using, with how many contracts wear each name and the canonical address where we have verified one. EVERY COUNT LIVES IN summary (symbolsReused, poolsIndexed, worstSymbol, worstCount) and NO count is quoted here, on purpose: the Arc index grows fast enough that a figure written into this text is stale within hours.

Honeypot check for Arc tokens, bulk: a real buy-and-sell round trip per token, nothing spent. Arc exit check, bulk: up to 25 tokens or v4 pool ids on Arc (ids=a,b,c), each answered by a real buy-and-sell round trip with nothing spent (the probe contract for native-USDC pools, a sequential eth_simulateV1 through the launchpad router for ERC-20-USDC pools), sorted worst first: cannot sell, heavy loss, not measured, cannot buy. Each result states its method and the pool fee.

Arc launchpad fee vaults: every vault holding USDC right now, with its creator, its token and the change we measured since our previous scan, largest first. Fees only accrue from real swaps and a wash trader pays them on both legs, so vault growth is a costly-to-fake measure of genuine trading, unlike reported volume. Balances are the creator share and only the creator can collect them: distribute() pays creator() and treasury() and pays its caller nothing.

The newest Arc token launches, Argus launchpad included, small and fast: token, symbol, pool, opening time and a sell verdict (a simulated buy-then-sell about 12 s after the pool opened, with the round-trip loss in percent), plus now: the same simulation repeated every 5 min for 24 h, so a launch whose liquidity was pulled after launch (a rug pull) says LIQUIDITY GONE with the time it was found (8 Oct: 54 of the newest 100 had lost their exit), up to 100, newest first.

Did that Arc payment actually land? Pass ?tx=0x… and optionally ?to=0x… and ?expect=1.50 to get the payer, the amount, whether it reached your address, confirmations, finality and the gas paid — all in USDC. Handles the thing that breaks most Arc integrations: USDC is the NATIVE gas token at 18 decimals in tx.value AND has a 6-decimal ERC-20 view, so a verifier that only reads Transfer logs reports real payments as zero. Read-only: checking never consumes the payment.