550 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.
Read ERC-20 metadata on Base. POST {"token":"0x..."} and receive the name, symbol, decimals and total supply, with the supply given both raw and decimal-adjusted. Reports a clear error when the address is not a token con...
Read the native ETH balance of an address on Base. POST {"address":"0x..."} and receive the balance in wei and in ether. Live chain state read directly from a node, with no indexer lag and no API key.
Look up a transaction on Base by hash. POST {"hash":"0x..."} and receive its status, block number, from and to addresses, value, gas used and effective gas price. Returns a clear not-found rather than an empty object whe...
Read the head of the Base chain, or a specific block. POST {} for the latest block, or {"number":12345678} for one by height. Returns number, hash, unix timestamp, gas used and transaction count. Useful as an authoritati...
Read an ERC-20 token balance on Base. POST {"address":"0x...","token":"0x..."} and receive the raw balance, the token decimals and the human-readable amount. Defaults to USDC when token is omitted. Live chain state, no i...
Check an ERC-20 spending allowance on Base; flags unlimited approvals.
Deterministic pre-interaction report on a Base contract address: bytecode and hash, source verification, proxy and implementation storage slots, ownership and administrator control, mint, pause, blacklist and freeze capa...
PickleCheck endpoint check: is it safe to pay this x402 endpoint? (looks, never pays; unreachable/bad input are not charged)
The whole x402 market on Base in one call: active sellers, paid calls and unique payers over 24h, 7d and 30d, USDC volume, how many payTos are resolved, and how much activity was discarded as outliers.
Time series of x402 activity on Base: calls, raw USDC volume and active sellers per hour, 6 hours or day for the whole market since May 2026, or daily x402-only paid calls, payers and volume for one seller host.
Structured JSON quickstart reference with verified relay endpoints, EIP-712/BIP-322 signing parameters, and on-chain reference transactions for $0-gas Base & Stacks ERC-8004 registration.
Current gas price and fee suggestion on Base or Ethereum: base fee, priority fee (low/standard/fast), max fee to set, and what an ETH transfer, ERC-20 transfer and DEX swap cost right now in gwei, ETH and USD (Chainlink...
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.
Structured JSON quickstart reference with verified relay endpoints, EIP-712/BIP-322 signing parameters, and on-chain reference transactions for $0-gas Base & Stacks ERC-8004 registration.
Structured JSON quickstart reference with verified relay endpoints, EIP-712/BIP-322 signing parameters, and on-chain reference transactions for $0-gas Base & Stacks ERC-8004 registration.
Structured JSON quickstart reference with verified relay endpoints, EIP-712/BIP-322 signing parameters, and on-chain reference transactions for $0-gas Base & Stacks ERC-8004 registration.
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.
Checks one Base transaction on-chain and returns a replay-resistant receipt: chain, token, tx hash, log index, block, confirmations and every USDC transfer. With to and amount it says whether the payment matched; with in...
The x402 sellers on Base with most paid calls in a window (1h, 8h, 24h, 7d or 30d): payments, unique payers and USDC volume, from the AgentsMap index.
Before paying an x402 service: real paid activity of its host or payTo (24h, 7d, 30d, unique payers, volume, first and last payment), who buys (repeat buyers, payments per buyer, share of the top buyer, new and returning...
Base block explorer search: look up a Base block by number or hash and get timestamp, tx count, gas used/limit, base fee and explorer link; no input gets the latest block
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
Cheapest deterministic x402 settlement test endpoint for Base and Solana wallets: proves wallet signing, facilitator settlement and delivery receipts end to end. POST any JSON object up to 8 KB or GET arbitrary query par...