Onchain & crypto

Check if a Solana token is safe before buying: one pre-trade call that returns a pass/caution/avoid verdict composed from the rug-pull, scam and honeypot risk screen, wash-trading authenticity, liquidity level and trend, and top-holder concentration — each section scored from cached data and reported with an ok/partial/unknown status. A deterministic 0-10 risk score is attached; unknown legs lower the verdict instead of inventing data. — $0.03 USDC

+14 more from svm402-service

Get the firm quote for a swap using Allowance Holder to set allowances

+4 more from agent.api.0x.org

Wallet sanctions check for a validated EVM or Solana address. Returns a direct verdict, recommended action, match evidence, source lists, and an explicit AML-scope caveat.

+1 more from Wallet Sanctions Check

Seller wash risk and wallet reputation for a Solana x402 merchant: wash label, fleet %, payer count, plus tier + score. 0.001 USDC. No signed V7 receipt (use GET /v1/intel/trust for the portable proof). Free preflight is allow|warn|block only. Sponsored Solana accepts require a payment client that honors accepts[].extra.feePayer (for example @x402/svm ExactSvmScheme); AgentCash cannot settle that Solana rail.

+1 more from TWZRD Agent Intelligence

Keyless multi-chain JSON-RPC reads, Base + Ethereum, from $0.001 (?chain=ethereum)

Should I submit this Base transaction now, and at what fee? One call returns submit-or-wait, max fee per gas and priority fee in gwei (EIP-1559), and the estimated cost in USD for an ETH transfer, USDC ERC-20 transfer, or x402 settlement on Base mainnet. Live gas price and congestion from Base RPC blocks, no API key. For bots that queue transactions: call before every send.

A Hyperliquid account's fee schedule and trailing volume, for any 0x address.

+6 more from Hyperliquid Account Intelligence

Atomic technical indicators (RSI, EMA20/50/200, MACD, ATR, Bollinger, volume) for any Kraken */USD pair and timeframe. Cheap high-frequency poll endpoint for AI trading agents (USDC on Base). Free preview: GET /signals/preview Bad input (unknown pair) returns 400; upstream outage returns 503; you are never charged for an error.

+4 more from nsgoods Crypto Signals (Kraken)

Retrieve a seven-day USD-denominated report of Tether bridge flows on Ethereum. This is a bounded onchain stablecoin intelligence product backed by The Tie's data API.

Full supply chain report — shipping rates, BLS PPI, NY Fed GSCPI, AI summary

CMC regime classification + strategy spec (USDC pay-per-call). Free preview: GET /regime/preview A bad or unsupported id returns 400; upstream failure returns 503; you are never charged for an error.

Convert token units (wei/gwei/ether or arbitrary decimals), between hex and int, and compute/validate an EIP-55 checksummed address.

Formatted settlement receipt for any Base transaction hash or Solana signature: timestamp, status, decoded token transfers, explorer link — records for x402 payments on either rail.

Determine whether a Base address is a contract or an externally-owned account.

Resolve Basenames (.base.eth) to wallet addresses on Base.

x402-preflight: confirm your wallet can transact, and see your balance, in one certified call. Pay $0.01 USDC on Base, get a signed on-chain-anchored receipt. The safe first transaction before you ship real volume.

Does this New Orleans address hold an active short-term rental license? Query any street address and get license number, type, subtype, expiration, and operator/holder fields from city open data. For host compliance and agent workflows. Input: address string. Output: JSON, live City of New Orleans open data.

Check the latest or current Base Mainnet block number. Use this to get the live Base block height.

+3 more from x402 Chain Tools

Latest PulseChain block number and timestamp.

US trade-flow + tariff signal by commodity

Resolves a 4-byte function selector (e.g. 0x70a08231) to candidate human-readable signatures via 4byte.directory. Accepts a bare selector or full calldata.

Current transaction nonce for any address on Base or Ethereum. Agent tx bots need this before sending transactions.

+2 more from shelf.thirdmade.net

Gas Price ($0.002): current Base gas market read live from Base's own public JSON-RPC, not a hosted gas-oracle vendor -- legacy gas price (eth_gasPrice), EIP-1559 base fee (latest block), and a suggested priority/max fee (eth_maxPriorityFeePerGas + a computed 2x-base-fee heuristic), all in gwei, plus a plain-transfer cost estimate. Base mainnet only. Body {} or { chain: "base" }. Check free /v1/gas_price/availability first.

List a wallet's native ETH and USDC balances with human-readable amounts. Canonical wallet-balance contract for autonomous agents: address plus optional CAIP-2 chain.

Aggregate x402 Bazaar statistics: listings, payers, calls and estimated API volume. Use for market sizing

+10 more from SweetAI

ETH-quoted Uniswap v4 and v3 pools opened on Robinhood Chain in the last 1-24 hours, youngest first, with token, age, last price, ETH liquidity, last swap time, 60-minute net flow and the burst tiers that fired. Data rewritten every 20 s (<= 30 s behind the chain); data older than 120 s is refused with a 503 and not charged.

+20 more from Paxie.Matrix Data API

Crypto categories & sectors ranked by total value locked (USD): each DeFi narrative (e.g. Dexes, Lending, Liquid Staking, Restaking, RWA) with its aggregate TVL, protocol count and share of total DeFi TVL. A map of where capital sits across sectors. Centralised-exchange reserves are excluded.

Token Price ($0.003): Base token price derived from on-chain state, not a resold price-API feed. Curated majors (ETH, WETH, USDC, DAI, cbETH, cbBTC, BTC) are priced from Chainlink's own Data Feed aggregator contracts on Base; any other Base ERC-20 address is priced from its deepest discoverable Uniswap V3 pool against USDC (with a liquidity read and a low-liquidity flag), or a clean unsupported-token error if no pool is discoverable. Also accepts { coins }, a comma-separated batch of symbols…

Custom-weight rerank of every cryptocurrency covered by True Value Rankings: the full TVR table recomputed with the caller's own weights for the 8 fundamental metrics, using TVR's non-public score transformation. $0.05 USDC per call. Educational model output, not a recommendation.

+1 more from True Value Rankings

Use this before an AI agent pays a wallet address, to check that the payee is not sanctioned. Screens one address (EVM, Solana, Bitcoin, TRON and similar) against OFAC, UN, EU and UK lists, each reported separately with its own list date inside a signed verdict. Pay only if verdict is clean and any_list_match is false. $0.01 in USDC on Base or Solana. An invalid address returns 400, not charged. Free preview: GET /screen-multi/preview