On-Chain Bundle: multiple Ethereum mainnet reads in one paid call. Parts: eth_mainnet_erc20_totalsupply, eth_mainnet_contract_abi, eth_mainnet_eth_getcode. Returns: each named part service's own result, in one paid call, keyed by the part's name -- exactly what each part returns when bought alone; the call succeeds only when every part answers. It takes the union of the parts' query parameters.

TableGrab: give a public URL and get clean, typed JSON tables (headers, row objects, inferred column types, caption/heading context; colspan/rowspan handled; ISO dates and real numbers) or the page's main content as Markdown with title, byline, date and links. Handles HTML, CSV, XLSX and text PDFs. SSRF-safe, no JS rendering (returns js_required). $0.01 per call. Feedback/support: POST /feedback (free) or js4336638@gmail.com.

x402 Testbed: smallest possible paid round-trip. Use to verify your client can parse a 402 challenge, sign USDC, settle via facilitator and retry. Returns pong + network.

secp256k1, P-256 and P-384 public parameters (p, n, G) from SEC 2, with an on-curve check of a public point.

Token Balance Check: ERC-20 balance of any wallet address on Ethereum mainnet. Ethereum mainnet ERC-20 balanceOf. Takes query parameters token (ERC-20 contract, 0x + 40 hex) and address (holder, 0x + 40 hex). Returns the holder's raw token balance read from the contract.

Token Supply Lookup: total supply of any ERC-20 on Ethereum mainnet. Total supply of an ERC-20 token contract on Ethereum via totalSupply given token address.

Current U.S. EPA Air Quality Index (AQI) and pollution levels for a specific location, given latitude/longitude — use to check smog, air pollution, or whether it's safe to be outside. Sourced from the EPA AirNow program (federal/state/local/tribal agencies); covers the US, Canada, and Mexico only. Data is preliminary and unvalidated per EPA data use guidelines — not for regulatory use.

Send a picture, either as a public web address or as base64-encoded image data, and get back the plain text found inside it.

Does this CNPJ exist in the official Receita Federal registry, and is it active? Returns existence, registration status (situacao_cadastral: Ativa=active, Suspensa=suspended, Baixada=closed) with date, headquarters/branch flag and state. Cheapest paid check in the catalog: digit arithmetic alone cannot tell a well-formed number from a real, active company. Free sample, no payment: https://api.brazilayer.com/v1/cnpj/amostra

Use to detect breaking changes and API drift in a public OpenAPI/Swagger spec (JSON or YAML URL). Compares the spec with the service's last stored snapshot of that URL (first check records the baseline) and returns a deterministic JSON change report plus a Markdown summary. 0.10 USDC per completed analysis.

Custom AI-generated images from your text prompt: product visuals, concept art, social media banners, illustrations, and more. Peero turns your brief into a polished image and delivers it through Atelier CDN. Important terms: - A clear tex

Hourly electricity generation by fuel source for any US balancing authority, with the carbon-free share computed from wind, solar, hydro, nuclear and geothermal. Storage is excluded from both sides because discharging shifts power rather than generating it, and "other/unknown" is never counted as clean - so the share errs low. Method returned with the numbers.

Euro foreign-exchange reference rates from the European Central Bank for 30 currencies - USD, GBP, JPY, CHF, TRY, CNY, INR, BRL and more - with cross-rates derived through EUR (USD/TRY, GBP/JPY, anything against anything) and an optional daily series up to 90 business days. The response says plainly what these are: published once per business day around 16:00 CET, not a live market rate and not tradeable.

Look up a CVE by id, or search the NVD catalogue by keyword. Returns the CVSS base score and vector with its version (v4, v3.1, v3.0 or v2 - whichever NVD published), severity, CWE classification, publication and last-modified dates, vulnerability status and references. Straight from the NIST National Vulnerability Database.

Hourly US electricity demand, day-ahead demand forecast, net generation and total interchange for any of 83 balancing authorities - CAISO, ERCOT, PJM, MISO, NYISO, ISO-NE, SPP, Bonneville, or US48 for the whole Lower 48. Straight from EIA open data, grouped by hour so an agent reads one object per hour instead of four raw series.

Paid JSON for one Substack-backed newsletter, blog, or podcast post: synthesized summary (`synthesizedSummary`), metadata, and identifiers for financial analysis. Path params are `publicationSlug` and `postSlug`. Returns 503 until summary exists. USDC `exact` x402 on Base or Solana; USD amount is per-post when set on the post, otherwise the server default.

AI summarization of any web page, raw text or HTML. Send JSON with one of url/text/html plus optional style (bullets|paragraph|tldr) and maxWords. Returns a dense, factual summary that preserves key numbers, names and conclusions. Powered by Claude.

Read any wallet balance on 28 EVM chains: native coin (ETH, BNB, MATIC, AVAX) or any ERC-20 token including USDC. Covers Base, Ethereum, Arbitrum, Optimism, Polygon, BSC, Avalanche, zkSync, Linea, Scroll, Blast, Mantle, Celo, Gnosis, Sonic, Unichain, World Chain, Zora and more. Returns the raw and decimal balance with the block it was read at.

Read a token's DEX pair straight from the chain: pair address, both reserves, the implied price, LP total supply and how much of that LP sits in burn addresses. Base, Arbitrum and BNB Chain, Uniswap V2-style factories against the wrapped native token. Read-only eth_call, no API key. The answer states its own limits: no pair here does not mean no liquidity, because V3, other DEXes and non-native quote pairs are not covered.

A deliberately cheap paid call, for checking that your wallet, network and x402 client actually work against this gateway before you spend more on a real product. It settles a real payment and echoes back what we saw: network, scheme, amount and your address.