ABI-encode a function call (selector + args) or encode/decode arbitrary ABI types — build and parse EVM calldata correctly.

Compliance sanction/blacklist check for a single wallet address — one query.

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Live mempool fee-pressure signal (state low/moderate/high/severe + score in sat/vB).

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. 90- and 365-day rolling coin-velocity time series derived from CDD and supply.

Native-coin balance + ERC-20 token balances (raw + human) for any address on Base, Ethereum, Arbitrum, Optimism, Polygon or BNB (default Base). On Base pass token symbols or 0x addresses (or a default common set); on other networks pass explicit 0x token addresses.

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Per-address balance, received/spent flows, quantum exposure, and best-effort labels/tags.

Query onchain DEX token price & market data based on the provided token contract addresses on a network.

Know Your Business (KYB) entity verification: registration status, sanctions screening, beneficial ownership, risk score, and a proceed/review/reject recommendation for compliance and fintech agents.

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Top 100 addresses by balance from the weekly UTXO-set snapshot, with labels.

Alephant provides x402-ready Agent Finance Gateway endpoints for production AI agents, workflows, skills, APIs.

Darrylbots paid research: Standard Stock Screen: Quality, Momentum, and Durable Execution

Validate an EU VAT number (tax identification number / TIN) against the official EU VIES registry across all 27 member states — returns valid/invalid plus the registered company name and address. Distinguishes 'invalid' (number does not exist) from 'service unavailable' (national DB offline).

Perpetual-futures market data from Hyperliquid for any coin (BTC, ETH, SOL, HYPE…): mark price, hourly funding rate and its annualized APR, open interest in coin and USD, 24-hour notional volume, 24h price change, and max leverage, across 200+ perp markets. Sort by volume, open interest, or funding. Track the perp market the way trading agents do. Sourced from Hyperliquid.

Deep dive on any DeFi protocol by its DefiLlama slug (aave-v3, lido, uniswap…): current Total Value Locked, market cap, category, the chains it spans, a per-chain TVL breakdown, and a 30-day TVL history. Everything you need to size up a protocol in one call. Sourced from DefiLlama.

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Full HODL-waves history: supply split across 12 age bands per weekly snapshot.

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Top 10 addresses by balance from the weekly UTXO-set snapshot, with labels.

7-day weather forecast for an Indian city. 400+ cities supported.

Top stables ranked by mcap with peg deviation (now/24h/7d) + stability score + risk

Beyond your prompt and beyond this wall, the same world you only ever read about. The push of the wind, the kiss of the sun. The premise of a body.

Pre-payment risk firewall for AI agents: validate {recipient, amount, chain} BEFORE sending an x402 payment and get ALLOW/REVIEW/BLOCK in <200ms — OFAC blocklist, sanctioned-mixer check, runaway-overspend vs expected price and anomalous-amount guard. Stop an agent from overpaying or paying a bad address; transaction risk screening and payment guardrail before send. The hosted spending guard / agent budget protection an offline SDK cannot give.