203 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Live gas tracker across Ethereum, Base, Arbitrum, OP Mainnet, Polygon and BNB Chain: head block age, base fee, 10th/50th/90th percentile priority fees from eth_feeHistory, suggested maxFeePerGas tiers, and estimated cost...
Current Base mainnet block consensus, EIP-1559 fees, ETH/USD reference price, and deepest WETH-stablecoin DEX pool telemetry.
Live x402 seller health check: fetches /.well-known/x402(.json) and the unpaid 402 challenge; reports reachable, TLS, schema OK, network, asset, payTo, price, latency. SSRF-safe, no chain reads.
Base gas price history: base fee, gas used/limit, utilization and transaction counts for the last N Base blocks, plus average/min/max, trend and suggested max fee
Estimate gas fees: live gas price and slow/normal/fast estimates for Base or Ethereum.
gas-estimate - live gas price and slow/normal/fast estimates for Base or Ethereum. $0.001 per call.
Receipt by hash: status, gas used, fee paid and emitted log count, read-only.
Receipt by hash: status, gas used, fee paid and emitted log count, read-only.
Gas estimate on Base - the current gas price, base fee, priority fee and a transaction cost estimate in USDC (cycle 231, x402 $0.01) - GET ?sample=1|2|3 OR ?tx=<TO_JSON> OR POST application/json {tx|to|value|data}. KEYLE...
Live Korea kimchi premium: Upbit KRW vs global USD for BTC and ETH, plus USD/KRW FX. Korea crypto arb/sentiment signal. Optional symbols=BTC,ETH filter. Alias: /kr/kimchi-premium.
Should your agent buy this token? Keyless token risk verdict: honeypot check, mintable, hidden owner, buy/sell tax, top-10 holder concentration (GoPlus) plus price, liquidity and 24h volume (DexScreener) -> avoid|caution...
Chain info on Base (cycle 228, x402 $0.01) - GET ?sample=1|2|3 OR POST application/json {}. KEYLESS public Base JSON-RPC with 6-endpoint failover - no key, no account, no signup. One-call chain state snapshot: the chain...
Paid Base chain head and gas price (cycle 225, x402 $0.01) - GET ?sample=1|2|3 OR POST application/json {}. KEYLESS public Base JSON-RPC -- no key, no account, no signup. Returns the current block number, the block times...
What a transaction on Arc ACTUALLY costs, measured from real receipts rather than quoted from the docs. The companion to /api/x402/arc-cost, which prices a named operation at the current gas price: that one is the quote,...
What a given operation SHOULD cost on Arc right now, in dollars - a price list computed at the gas price read at this block, and the companion to /api/x402/arc-gas which measures what transactions ACTUALLY cost across a...
Base gas price now: what an ETH transfer, a USDC transfer and a Uniswap swap cost in USD, L1 fee included. What a transaction on Base costs right now, in dollars, including the L1 data fee most gas trackers leave out. Re...
Sponsor 2 instruction(s) as fee payer: 1518840 lamports (1 account creates)
What x402 agents actually pay for: the Bazaar's top services by real 30-day call volume and unique payers, with per-category totals and the market median. Read from the facilitator's own usage counters.
Decentralised exchange volumes: totals, 24h/7d/30d windows, per-chain and per-protocol breakdowns, all in one payload cached at the edge. For market-structure work and volume share screens.
Base chain eth_gasPrice in wei and gwei. No parameters.
Gas price for a chain (base|polygon|solana): eth_gasPrice + slow/standard/fast tiers. Solana returns the per-signature base fee.
Live Base snapshot for AI agents. Each GET returns the current Base block number, base fee, gas price, ETH-USD price, and a unique receipt. Price is exactly $0.01 USDC on Base via x402. No API key and no RPC method. GET...
Gas estimate before you send, on Ethereum, Base, Arc or BNB Chain: pass ?to=&from=&data=&value= and get the gas units, the gas price and the fee in the native coin, or the revert reason if the transaction would fail. Not...
Detect language, formality and tone of a text with confidence scores. Deterministic heuristics + compact wordlists. Returns iso_639-1 + register. — $0.001 USDC/call on eip155:8453. Pay-per-call via x402 — no API key, no...