Every agent-payable API.

UK VAT number format + check-digit test: Checks a UK VAT number's format and HMRC check digits (mod 97 / 9755). Catches fake or mistyped VAT numbers instantly without an HMRC call. Use /v1/business/check to confirm live registration.

Verify up to 25 email addresses per call: syntax, domain MX/A record, disposable-domain, and role-account checks. Does not perform SMTP/mailbox verification.

Verify custodian holds claimed assets

Verify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requirement judged, use accept ($0.03).

Verify if a person meets a minimum age requirement based on their date of birth. Returns exact age, whether the threshold is met, and days until the threshold (if not met). Accounts for leap years.

Verify a Base/BSC transaction receipt for a payout or claim: status, block, sender, gas, decoded ERC-20 Transfer logs and a sha256 evidence digest. 0.01 USDC via x402 on Base. POST only. Free sample: /samples

Verify up to 20 Base transactions in one call

Recovers the address that signed a personal_sign (EIP-191) message and tells you whether it matches the address you expected. This is how you prove a wallet is controlled by whoever is talking to you.

Returns pong with the server time and an optional echo string, after a real x402 USDC payment on Base. Useful for testing that an agent's x402 payment client, wallet, and budget limits work end to end before using costlier services, and for monitoring. The cheapest paid call VerifyLite offers.

Screens 1 to 20 wallet addresses against the US Treasury OFAC SDN sanctions list (crypto addresses) and the ScamSniffer scam and drainer blacklist, in one call at one price. Returns block or clear per address with the reason, plus list sizes and freshness. Address-level, so it works for Base, Arc, Ethereum and any EVM chain. Useful before sending a payment, paying an x402 seller, accepting funds, or approving a spender. Read-only. Not charged for invalid addresses.

Classifies an IPv4 or IPv6 address: family, canonical form, and whether it is public, private (RFC 1918 or unique local), loopback, link-local, carrier-grade NAT, multicast, documentation, or reserved, including IPv4-mapped IPv6. With no input over HTTP, returns the caller's own public IP and country. Useful for validating network input and filtering internal addresses. Not charged for an invalid address.

Current prices in USD from Chainlink Data Feeds on Base mainnet: ETH, BTC, cbBTC, SOL, USDC, DAI, and EUR. One pair or all at once, each with the feed's last update time, age in seconds, and a stale flag, read straight from the oracle contracts (the same prices DeFi protocols use). Useful for valuing balances, converting USDC amounts, and checking a stablecoin peg. Not charged for an unknown pair or when the feeds can't be read.

Cryptographically secure, unbiased randomness: whole numbers between min and max (default 1 to 100), or random picks from a list of choices, one or up to 100 per call. Useful because language models are bad at being random: fair draws, sampling, shuffling decisions, and A/B assignment. Not charged for invalid options.

Current Base mainnet gas: gas price, base fee, and priority fee in gwei, plus estimated execution cost in ETH for an ETH transfer, a USDC transfer, and a typical swap, from the latest block. Useful for timing transactions and budgeting fees before sending. No input needed. Not charged when Base can't be reached.

Generates standards-compliant UUIDs from a cryptographic random source: version 4 (random) or version 7 (time-ordered, sorts by creation time, good for database keys), one or up to 100 per call. Useful for idempotency keys, record IDs, and correlation IDs. Not charged for invalid options.

Base mainnet block details for the latest block or a given block number: number, hash, timestamp, transaction count, gas used and limit, and base fee. Useful for checking chain head and freshness, timestamping events, and counting confirmations. Read-only. Not charged for an invalid or future block number or when Base can't be reached.

Current time from a reliable server clock: UTC ISO timestamp, Unix seconds and milliseconds, and optionally the local date, time, weekday, and UTC offset in any IANA time zone (daylight saving handled). Useful because language models don't know the current date or time. Not charged for an unknown time zone.

Speech-to-text for one audio or video file by URL, using Whisper (turbo) on a GPU. Returns the full transcript, timed segments, ready-made SRT and WebVTT captions, and the detected language; optional translation to English. Files up to 25 MB (about 25 minutes of typical MP3). Useful for captioning videos, indexing podcasts, or reading meetings. Not charged if the file can't be fetched or transcribed.

Website safety check plus a Google Web Risk lookup for malware, phishing, and unwanted software. Includes the full /safe report: verdict (safe, caution, unsafe), 0-100 score, TLS, redirects, security headers, mixed content, insecure forms, and domain age. A blocklist hit makes the verdict unsafe. Useful for screening links before a payment, login, or download. Not charged if the blocklist cannot be reached.

Batch website safety check: the full /safe report for several URLs in one call, priced per site and cheaper than single checks. Each result has a verdict (safe, caution, unsafe), a 0-100 score, and evidence-backed flags for TLS, redirects, security headers, mixed content, insecure forms, and domain age, plus a summary count. Useful for screening every link in a search result, email, or document at once. Not charged if no site can be checked.

Approval check for one wallet and one ERC-20 token on Base: how much each spender (up to 10 app or router addresses) is allowed to move, flagging unlimited approvals and approvals covering the full balance, plus approvals made through Uniswap Permit2 with their expiry. Defaults to checking Permit2 itself. Useful before signing, for wallet hygiene, and for spotting approvals to revoke. Read-only. Not charged for invalid addresses or non-tokens.

Honeypot and sell-tax check for a Base token. Finds its deepest WETH or USDC pool (Uniswap V2/V3, Aerodrome, Slipstream) and simulates a buy then a sell on a Base node: no money moves. Returns whether selling works, the actual buy tax and sell tax, round-trip loss, pool and liquidity, with a verdict: clean, taxed, high_tax, honeypot, no_liquidity or inconclusive. Useful before an agent buys, swaps or accepts a token. Not charged for invalid input or tokens with no WETH or USDC pool.

Inspects one Base mainnet address: whether it holds contract code and how large, whether it is an EIP-1967 upgradeable proxy (and its implementation address), EIP-7702 delegation, and which standards it reports or behaves like (ERC-165, ERC-721 NFT, ERC-1155, ERC-20). Useful for knowing what kind of contract an agent is about to interact with or approve. Read-only. Not charged for an invalid address or when Base can't be reached.

Recent token transfers for one Base wallet, incoming and outgoing, newest first: token, symbol, amount, sender, recipient, transaction hash, block and time, with likely spam airdrops flagged. Filter by one token or by direction, up to 50 per call. Reports the block window searched. Useful for checking a counterparty's activity, confirming deposits, reconciling payments, or watching an agent's wallet. Read-only. Not charged for invalid input or when Base can't be reached.

Prompt-injection screen for text or a web page an agent is about to read: finds instruction overrides (many languages and obfuscated spellings), fake system or role markers, jailbreak personas, data-exfiltration links, requests for keys or seed phrases, tool, shell, or payment hijacks, and hidden content (invisible Unicode smuggling, zero-width and bidi characters, HTML comments, hidden elements, base64). Returns a verdict, 0-100 risk score, findings, and cleaned text. Not charged on bad input.

Call any read-only (view/pure) function on a Base contract and get the decoded answer. Give the function as a signature like balanceOf(address) returns (uint256) plus args, or raw 0x calldata. Supports address, bool, uint/int, bytesN, string, bytes and arrays, an optional historical block, and plain revert reasons. Raw return data is always included. Not charged for invalid input, reverted calls, or when Base can't be reached.

Base mainnet transaction lookup by hash: status (success, failed, or pending), block, timestamp, confirmations, from, to, ETH value, total fee including the L1 data fee, method id, and every USDC transfer in the transaction decoded to sender, recipient, and amount. Useful for confirming that a USDC or x402 payment really settled before delivering goods. Read-only. Not charged for an invalid hash, a hash not found on Base, or when Base can't be reached.

Look up one NFT on Base by contract and token ID: ERC-721 or ERC-1155, current owner (wallet or contract), collection name and symbol, and its metadata: name, description, image link, animation, traits. Reads ipfs://, ar://, https and inline on-chain metadata. Pass owner to confirm a wallet holds it (and its ERC-1155 balance). Read-only. Not charged for invalid input, tokens that don't exist, or when Base can't be reached.

Domain report: registration date, expiry, registrar, status, and name servers from the official registry (RDAP), plus DNS records (A, AAAA, MX, NS, CAA) and email security (SPF, DMARC policy), with flags for new, expiring, or misconfigured domains. Useful for vetting a company, vendor, or link before trusting it. Not charged for invalid or reserved domain names.

ERC-20 token metadata for one contract on Base mainnet: name, symbol, decimals, and total supply (human-readable and raw), with a flag for whether it behaves like an ERC-20 at all and whether it is native USDC. Handles older tokens that return bytes32 names. Useful for formatting token amounts correctly and spotting look-alike tokens. Read-only. Not charged for an invalid address or an address with no contract.

Search the US Federal Register, the government's daily journal of rules, proposed rules, notices and presidential documents. Filter by keyword, type, agency and date range, only items still open for comment, or look up one document by number. Returns title, agency, publication and effective dates, comment deadline, a trimmed abstract, citation, docket IDs and official links. Useful for agents that monitor regulation. Not charged for invalid input or when nothing matches.

Check dependencies for known vulnerabilities before installing or shipping: up to 20 packages (npm, PyPI, Go, Maven, crates.io, RubyGems, NuGet, Packagist and more, by name and version or purl) against the OSV.dev database. Returns each advisory with CVE IDs, severity and CVSS score, fixed versions, the smallest safe upgrade, and links. Not charged for invalid input or if OSV.dev can't be reached.

Pre-signing check for Base. Send a transaction (to, data, value, from) or a typed-data signature request and get what it does in plain words plus red flags: unlimited or wallet-targeted approvals, NFT approve-all, off-chain permits, sends to a token's own contract or the dead address, OFAC or scam-listed counterparties, risky tokens, and calls that would fail (simulated from your wallet). Verdict ok, caution, danger or block. Not charged for invalid input.

The largest holders of an ERC-20 token on Base, ranked, with balance, percent of supply and wallet/contract/burn type, read straight from the chain. Top 1/5/10 concentration (burns excluded), a wallets-only share, burned percent and a low-to-very-high level. For tokens whose whole transfer history fits (most new and small tokens) the list and holder count are exact; otherwise coverage is reported. Not charged for invalid input.

Resolves Basenames (name.base.eth, on Base) and ENS names (name.eth, on Ethereum) to wallet addresses, including a Base-specific address and profile records (avatar, description, url, X, GitHub). Or give an 0x address to get its primary name, verified by resolving the name back to the same address. A bare name like jesse means jesse.base.eth. Useful before sending funds to a name or labeling counterparties. Read-only. Not charged for invalid or unregistered names.

Risk check for an ERC-20 token on Base before buying, accepting, or holding it: reads the contract and its proxy implementation for owner powers (minting, pausing, blacklisting wallets, changing buy/sell taxes, trade limits, trading switches, burning others' tokens, upgrades), checks whether ownership was renounced and how much supply the owner holds. Returns a verdict, 0-100 risk score, and plain-language flags. Read-only. Not charged for invalid addresses or non-tokens.

One-call due diligence for a Base token before buying, accepting or listing it: owner powers in the contract (mint, pause, blacklist, fees, proxy), who holds the supply (top wallets, concentration), whether it can actually be sold and its real buy/sell tax (simulated), and whether the token or its owner is on the OFAC sanctions list or a scam blacklist. Returns one verdict (ok, caution, avoid, known issuer), a 0-100 risk score and plain reasons. Not charged for invalid input.

Web page reader: fetches one URL and returns its main content as clean markdown with the page title, description, language, and word count. Strips navigation, footers, scripts, and styles; links become absolute markdown links. Useful for feeding web pages to an LLM, summarizing articles, or extracting text for research. Not charged if the page can't be fetched or isn't text.

SEO check for one page: whether search engines can index it (meta robots, X-Robots-Tag, robots.txt rules), title and meta description length, canonical URL, H1 headings, viewport, language, Open Graph tags, sitemap, HTTPS, and redirects, with a 0-100 score and a list of issues by severity. Useful for site audits and pre-launch checks. Not charged if the page can't be fetched.

Email check: validates the address format, confirms the domain exists and accepts mail (MX), and flags disposable providers, role accounts (info@, support@), and free providers. Returns deliverable_likely, risky, undeliverable, or invalid with a reason. No message is sent. Useful for cleaning sign-up lists and lead data before outreach.

Turns messy LLM output into valid JSON: strips Markdown code fences and surrounding prose, fixes trailing commas, single quotes, unquoted keys, comments, Python True/None, cut-off brackets, and stringified JSON. Optionally validates the result against a JSON Schema (draft 4 to 2020-12) and lists each error with its location. Returns the parsed data, the JSON text, and what was changed. Not charged if no JSON can be recovered or the input is invalid.

RSS and Atom reader: give a feed URL or any news site, blog, or podcast page and get its latest items as clean JSON: title, link, published date, author, a plain-text summary, and media (podcast audio) links. Finds the feed automatically from the page when needed. Useful for news monitoring, research digests, and tracking competitors or releases. Not charged if no feed is found or it can't be fetched.

Base mainnet balance lookup for one address: ETH and USDC balances (human-readable and raw units), transaction count, and whether the address is a wallet or a contract, at the latest block. Useful for checking that a wallet is funded before a payment, confirming a payout landed, or screening a counterparty. Read-only. Not charged for an invalid address or when Base can't be reached.

Recent events (logs) one Base contract emitted, newest first, decoded: token transfers and approvals with amounts, Uniswap/Aerodrome swaps, liquidity and reserve updates, WETH wraps, NFT transfers, and admin actions (ownership changes, proxy upgrades, pauses, role grants) flagged. Filter by event name to search about 22 hours back. Counts by event type and the block window searched. Read-only. Not charged for invalid input or when Base can't be reached.

Live forex fx rate and fiat reference exchange rate for currency conversion from the European Central Bank (ECB eurofxref-daily, default EUR/USD).

Live Solana Mainnet-Beta SPL Token / Token-2022 mint security audit (mintAuthority, freezeAuthority, supply, decimals, riskScore).

Live Base Mainnet (chainId 8453) gas price and EIP-1559 baseFeePerGas directly from Base public RPC.

Live on-chain wallet balance and ERC20 balanceOf holdings on Base Mainnet (defaults to Base USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).

Use when you need a new image of a licensed character or brand: give a text prompt and a Story Protocol IP asset, and get a PNG generated with that asset as the reference image. Paid per image in USDC.

Adds lighting, equipment, people, envelope and ventilation heat flows at one supplied operating point, and converts evapotranspiration into a latent moisture-removal load. It is a steady-state sizing estimate without duct losses, thermal mass, equipment curves, controls, infiltration uncertainty or psychrometric state validation.