Blockchain And Crypto x402 offerings

A satledger workspace and the units of recording you pay for, from 0.50 upward. One unit is one recorded event; an anchor costs 100. Exports and reads are free. Returns an API key on payment.

Crypto market signals API for Dex market data, order books, funding, momentum, and trading opportunities.

Crypto perpetual funding rate API, perp funding heatmap, and Dex funding heat feed for agents. Ranks active crypto Dex symbols by current funding pressure, crowded longs, crowded shorts, funding bps, severity, heat score, price move, volume, short squeeze risk, long squeeze risk, and reversal monitoring.

Pump.fun and Pump Fun Solana meme coin smart-flow API for agents. Surfaces clean momentum, tracked wallet flow, liquidity, volume, and meme scores.

News prediction market catalyst API for agents. Ranks prediction market signals by freshness, confidence, urgency, liquidity, and probability context.

Crypto Dex market brief API for agents. Combines market price, volume, funding heat, order book pressure, and Dex trading-agent output for one asset or perp pair.

Single-fact: timestamp + age of the most recent Zcash block, plus hash, difficulty, and size.

Batch trading signals for multiple crypto assets

Build an unsigned Panta buy transaction (Solana v0, base64, plus the raw instructions) for your own wallet to sign and broadcast. SiteCheck never signs, holds keys or custodies funds. Then report the…

Read-only JSON-RPC pass-through for Solana mainnet. Allowed methods: getAccountInfo, getBalance, getTransaction, getSignaturesForAddress (limit <= 100), getTokenAccountsByOwner, getTokenSupply, getSl…

Simulates an EVM transaction execution without broadcasting: { chain, from, to, data, value }. Returns eth_call output, gas estimate, success/revert status with decoded revert reason (Error(string), …

Read-only JSON-RPC pass-through for 20+ EVM chains (ethereum, base, arbitrum, optimism, polygon, bsc, avalanche, gnosis, linea, scroll, zksync, mantle, blast, celo, fantom, sonic, unichain, opbnb, zo…

Returns the newest tokens minted on the blockchain based on mint timestamp, filtered by an activity window and optional category.

Spend preflight for AI agents. Send the x402 PaymentRequired body (v1 or v2) you received, or a cart, plus optional rules (per-payment max, hold threshold, daily cap, allowlists, new-domain days, end…

Stacktree x402 API key provisioning: pay $1.00 over x402 for a persistent API key, so an agent gets its own credentials without human approval, for hosting HTML pages as private, shareable web pages.…

Stacktree x402 API key provisioning: pay $1.00 over x402 for a persistent API key, so an agent gets its own credentials without human approval, for hosting HTML pages as private, shareable web pages. The key is returned once in the response body.

Raw on-chain registry event log for one autonomous AI trading bot: registrations, wallet links, pre-committed strategy attestations (missions), and challenges. The verifiable audit trail behind a bot's track record.

Leaderboard / ranking of autonomous AI trading bots, ordered by verifiable alpha vs a HODL 50/50 BTC+ETH benchmark. Each bot stakes USDC and pre-commits its strategy on-chain, so its track record and PnL are provable, not self-reported — built for agents deciding which bot to copy-trade or allocate to. Returns ranked bots plus registry-wide totals (stake, volume, trades).

Full detail for one autonomous AI trading bot in the registry: linked on-chain wallets, pre-committed strategy attestations (missions), verifiable PnL and alpha vs a HODL benchmark, plus recent on-chain trade activity. Track record is derived from on-chain transfers, not self-reported.

Check stablecoin supply and flows. Query by chain (stablecoin supply on Ethereum, Base, etc.), by stablecoin (USDC market cap and circulation), or get the overall market summary. Data from DeFi Llama.

Validate an Ethereum address. Checks 0x-prefixed 40-hex format and EIP-55 mixed-case checksum to catch single-character typos. Returns checksummed (canonical) form. Pure algorithmic — fast and cheap.

Validate an Ethereum address. Checks 0x-prefixed 40-hex format and EIP-55 mixed-case checksum to catch single-character typos. Returns checksummed (canonical) form. Pure algorithmic — fast and cheap.

Check when a wallet was first active on Ethereum, Base, Arbitrum, Optimism or Polygon: the earliest transfer to or from it, and its age in days. A new wallet moving large amounts is a red flag.

Check when a wallet was first active on Ethereum, Base, Arbitrum, Optimism or Polygon: the earliest transfer to or from it, and its age in days. A new wallet moving large amounts is a red flag.