Blockchain And Crypto x402 offerings

Multi-chain wallet portfolio: native balances and token holdings with USD values and totals per chain. EVM addresses are checked on Ethereum, Base, Arbitrum, Optimism, Polygon and BNB Chain (native + ~75 major tokens + up to 20 tokens you pass); Solana addresses list SOL and every SPL / Token-2022 holding. Prices come from on-chain DEX pools. Read-only public data.

Best DEX swap route and quote on Ethereum, Base, Arbitrum, Optimism, Polygon or BNB Chain via the KyberSwap aggregator (400+ liquidity sources, split routes): output amount, slippage-protected minimum, USD value change, gas, hops. With `sender`, also an unsigned ready-to-sign transaction plus the ERC-20 allowance check. Quotes only; ISHOB never sends transactions.

Verified smart-contract ABI (+ optional Solidity/Vyper source) for Ethereum, Base, Arbitrum, Optimism, Polygon and BNB Chain from the open Sourcify registry: compiler, deployment, read/write function and event signatures, and proxy resolution to the implementation ABI. Unverified contracts return 404 (not charged).

Live token prices computed from on-chain DEX pools (Uniswap V3, PancakeSwap V3, Orca Whirlpools) on Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain and Solana, with pool depth, confidence and 24h change; plus an Aave V3 yield screener (supply/borrow APY and market size per asset). No third-party price feed: every figure is derived from public chain state.

Token safety & scam check for an ERC-20 (Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain) or SPL mint (Solana): honeypot simulation, buy/sell tax, mint / blacklist / pause / owner privileges, LP lock, holder concentration (Powered by GoPlus Security) plus our own on-chain checks (proxy slots, owner, verified source, mint/freeze authority, Token-2022 extensions). Returns severity-ranked flags and a risk level.

Explain any mined transaction in plain English: what happened (swap, transfer, approval, NFT buy/sell/mint, wrap, contract deploy, failed + revert reason), the sender's net token changes with USD values, every token and native-coin movement, approvals granted, the function called (named from the verified ABI or a signature database, with decoded arguments) and the fee. Rule-based, no AI. Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain.

Discover agent services and buy IssueFoundry's fractional-cent x402 reliability utilities.

IXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain

IXS Real world asset vaults — 6% yields, BlackRock exposure, tokenized on-chain

Japan Stablecoin Payment Monitor: weekly change feed for stablecoin payment services in Japan — new launches, pilots, partnerships, fee changes, supported assets and chains, and closures. Each event is dated, categorized and tied to an official source URL. Pass changedSince=YYYY-MM-DD (your last run date) to fetch only new events; an empty changes list explicitly means no change. Without changedSince you get the full dated history back to late 2025.

Cross-chain swap quote over NEAR Intents (Aurora) between EVM chains and Solana (chain ID 792703809, base58 tokens and addresses). From an EVM chain it returns the deposit transaction to sign on the origin chain. From Solana it returns an empty transactions list and a deposit (address, token, amount) for the user to send from their Solana account; the recipient must then be an EVM address. The deposit address is the part of quoteId after "aurora:". After sending, optionally POST /proxy/v2/move-asset/deposit/submit with provider=aurora, the deposit address and the tx hash or Solana signature to speed up detection, then poll GET /proxy/v2/move-asset/deposit/status with provider=aurora and the deposit address. Both are free. When the provider fails they answer 422 if it rejected the request, 429 if it is rate limited and 502 if it failed or did not answer. Retry 429 and 502. A 422 that says upstream HTTP 404 right after a deposit can be indexer lag at the provider, so poll status again for a short while before giving up.

Resolves an ENS name into its addresses, text records, and content hash, with batch support up to 50 names and per-name chain scoping via interop addresses.

Resolves an address into its ENS reverse record on a given chain, with batch support up to 50 addresses and per-address chain scoping via interop addresses.

One paid call on jp-cm-kg.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://jp-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.

JPYC transfer metrics computed hourly from finalized Polygon blocks: event count, unique senders and receivers, volume, median and top receivers. Covers approximately 24 hours ending at the newest finalized hourly bucket; exact block and time range are in the response. Use for current JPYC usage metrics; not for wallet balances, price, news, supply or financial advice.

JPYC Service Monitor: weekly change feed for Japan-related JPYC and Web3 services. Each event is dated, typed (added / updated / removed / verified) and tied to an official source URL. Call with changedSince=YYYY-MM-DD set to your last run date to fetch only what changed; an empty changes list explicitly means no change, so a scheduled agent can report that without guessing. Without changedSince you get the full monitor snapshot.

EVM smart-contract risk screen for Base tokens. Call before swapping or sniping a newly launched contract: returns honeypot score, reentrancy/selfdestruct flags, access-control pattern and liquidity-…

Quorum-verified Base USDC receipt across two of three public RPC sources: transaction status, recipient, amount and confirmations

Quorum-verified Base USDC receipt across two of three public RPC sources: transaction status, recipient, amount and confirmations

Kael Pulse Headlines — lowest-cost agent attach: compact lane-tagged Solana titles ($0.02 USDC exact). Try free /v1/pulse/sample teaser first (no summaries).

Resolve a Japanese company to its official registry record: 13-digit corporate number (法人番号), canonical registered name, head-office address, entity type, and active/closed status. Query by name (fuzzy normalization: legal-form words, zenkaku/hankaku and kana variants are handled) or by corporate number. Source: National Tax Agency corporate number registry, all ~5M registered corporations in Japan.

Creates a paid checkout for Kalshi markets accepting multi-chain crypto payments (EVM & Solana) with exact-amount and timeout controls.

Use when an agent is building something Ethereum will hash and must get the same digest the chain gets: Keccak-256 of any string or hex payload, with the byte count. It is NOT SHA3-256, and that confusion is the usual reason a selector or a CREATE2 address comes out wrong. Do not use for file digests or API signatures outside Ethereum (/v1/util/sha256) or for a function selector, which is already built for you (/v1/util/selector).

Pay-per-call utility and data API for AI agents: tested no-KYC crypto payout-rails dataset (40+ rails, Sept 2026), live rail status checks, hashing/HMAC, encoding, JWT decode, crypto prices, URL fetch, web search. Eight routes $0.001-$0.02 USDC on Base via x402. No account, no API key.