Blockchain And Crypto x402 offerings

Base chain (8453) block header data: block number, timestamp, transaction count and base fee for any block. Result carries a signed receipt.

Outbound transaction count (nonce) and contract-or-EOA check for an address on Base. Result carries a signed receipt.

Deterministic Base contract facts: ERC-20 metadata, proxy slots, owner(), privileged-function selectors and flags. Not a safety verdict. Result carries a signed receipt.

Signed market-state receipt for one exchange. OPEN/CLOSED/HALTED/UNKNOWN - Ed25519 signed, 60s TTL.

Look up the latest Base mainnet block returned by the upstream RPC, including its number, timestamp (Unix and ISO) and gas used. No parameters. An upstream block response does not independently establish chain liveness or data freshness.

Base ERC-20 token control-risk screen: proxy, owner, mint, pause, blacklist, fee setters from bytecode

Get the ERC-20 token balance of any wallet on Base mainnet. Pass the token contract address and the holder address. Returns the raw balance, decimals, token symbol and the human-readable balance in one JSON response. Works for USDC, WETH, DAI or any standard ERC-20. Read-only, live on-chain data.

Look up an ERC-20 token's total supply on Base mainnet. Pass the token contract address. Returns JSON from public on-chain data; token metadata and formatted values depend on the contract's responses. Public RPC reads can fail or be incomplete.

Get the transaction count (nonce) and pending nonce of any address on Base mainnet. Pass the address. Read-only live on-chain data, useful before sending a transaction.

One call for a Base token: symbol, name, decimals, total supply, optional holder balance, admin-control risk screen (proxy, owner, mint, pause, blacklist, fee setters) with headline and signal count, and the current block number. Pass the token contract address and optionally a holder address. Replaces 4-5 separate lookups with one payment. Read-only live on-chain data, heuristic screen, not an audit, not advice.

Base address summary: contract or wallet, ETH balance, tx count, USDC balance

Check if a token on Base looks risky: plain-language heuristic screen of a token contract for admin-control signals (upgradeable proxy, active owner, mint, pause, blacklist, fee setters), with a one-line headline, signal count and shareable summary. Pass the token contract address. Heuristic bytecode screen, not an audit, not advice.

Mints via Helixa on Base for a 1 USDC x402 payment.

Returns a personalized greeting after receiving an exact USD Coin payment (amount 1000 on eip155:8453) with a 300s payment timeout.

Probe a peer x402 jobs URL and return a CC0 x402-probe-receipt-v1 (HTTP status, PAYMENT-REQUIRED body/header agreement, latency). Interop helper for agent operators. Does not settle. Keywords: x402, probe, 402, interop, b2b.

Get trending tokens most talked about and traded on CEXs and DEXs, optionally filtered by chain — made by Heurist.

Get tokens most talked about and traded on CEXs/DEXs (optionally by chain); made by Heurist.

Provides a wallet's USDC activity snapshot on Base — first/last seen, transfer count, total USDC in/out and net flow; made by Heurist.

Fetch an EVM wallet's token holdings (amount, USD value, 1‑day price change, token contract and chain); tool made by Heurist.

Is this token safe to buy? Honeypot check -- can the token be bought but not sold? Fast honeypot detection for ERC-20 tokens.

Historical crypto and tokenized stock data for backtesting: one UTC day (date=YYYY-MM-DD) of trade-flow candles for a symbol at 1m, 5m, 15m or 1h, per venue (on-chain DEX pools and Solana DEX pools for tokenized stocks) - OHLCV, aggressor buy and sell volume, buy pressure, VWAP and trade count, as JSON or CSV (format=csv). Catalog free at /api/v1/datasets.

Historical crypto signals query: momentum, activity, buying, selling, anomaly and regime per symbol for several symbols over any from/to time range in one paid call; data resolution chosen automatically. Use for history of several signals at once.

Testnet faucet claim: sends testnet gas or test stablecoins to your address on Base Sepolia, Ethereum Sepolia, Solana Devnet, Robinhood Testnet and more. Use when an agent or CI job needs testnet gas or test stablecoins sent to an address in one call, paid in USDC instead of a captcha or social login. $0.10 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.

Hive Research token analysis: a multi-agent crew researches any Base, Ethereum, Solana or Robinhood Chain token by address, symbol or name and returns a scored verdict. Use when an agent needs a researched verdict on a token before trading it, or a user asks whether a token is worth buying. $0.99 this call, in USDC on Base; you pay only if it succeeds. HivemindOS SuperAgent API.