flat-rate-llm.kikoribera03.workers.dev x402 offerings

Use when an agent is handed an address and must decide whether it is safe to use before sending anything: it validates it and returns the EIP-55 mixed-case checksum form, plus whether the input was already checksummed. An address that fails the checksum is almost always mistyped. Do not use to find out whether it is a wallet or a contract (/v1/evm/is-contract) or to resolve a name (/v1/evm/ens).

Everything the authoritative public sources say about one autonomous system number: the RDAP registry record via the ARIN-to-RIR referral chain (holder, status, allocation dates, abuse contact), the AS name, country and RIR from Team Cymru's DNS service, and the prefixes it is announcing right now in the global routing table, from RIPEstat, split into IPv4 and IPv6 with a sample. Keyless and free at the source. The natural second call after /v1/red/ip gives you an origin ASN.

Use when an agent must put bytes through a header, a URL or a JSON field, or read what came back: base64 in both directions, including the URL-safe alphabet, with UTF-8 handled properly. x402 itself rides on base64, so this is the one that reads a payment header. Do not use for hashing (/v1/util/sha256) or for hex (/v1/util/hex). No API key, no account.

Use when an agent has to pick a chain that is actually answering before it commits to one: every supported chain in a single call, each with its chain id, block height, how many seconds stale its head is, and ok. Do not use for one chain on its own (/v1/evm/block) or for what a transaction will cost there (/v1/evm/gas, and /v1/evm/fees for EIP-1559 caps). No API key, no account.

Use when an agent must break a tie or split a test and cannot be seen to have chosen: one or more fair coins, each result and the tally of heads and tails, cryptographically random rather than Math.random. Do not use to pick among more than two options (/v1/random/pick) or to order a list (/v1/random/shuffle). No API key, no account.

Use when an agent is about to send funds and must decide whether the destination is a plain wallet or a contract: returns isContract and the size of the deployed bytecode. A wallet where you expected a contract, or the reverse, is the cheapest mistake to catch before signing. Do not use to judge whether a token is safe (/v1/evm/token-safety) or worth trusting (/v1/evm/verdict). No API key, no account.

Use when an agent has to convert money in a figure someone will audit: between any two of the ~30 currencies in the European Central Bank's official reference rates, on today's publication or on a past date within the last 90 days. Returns the rate used, its publication date and whether it was crossed through the euro. This is the auditable rate accounting and customs ask for, not a live market quote: it is published once a day and it is reproducible.

Use when an agent must stamp or schedule something in a particular place and needs every form at once: ISO with offset, 24-hour, 12-hour, weekday, unix timestamp and UTC. It also says whether daylight saving is active right now and what the zone's standard offset is, so a shifted clock can be told apart from a permanent one.

Use when an agent must act on the weather right now and be able to cite it: current conditions for any point on Earth, from the Norwegian Meteorological Institute's official model, not an aggregator. Returns temperature, humidity, pressure, wind speed and bearing, cloud cover and the next hour's precipitation, plus the exact model run it came from and the units the institute itself declares, so the figure can be checked.

Use when an agent has a job to get done and does not know which tool or in what order: describe it in plain words and it happens in ONE paid call: picks from 71 capabilities - transcription, translation, documents, images, web, on-chain, domains, IPs, weather, FX - fills their parameters and chains up to 3 steps, feeding each result into the next. Priced per job: the 402 challenge quotes YOUR job before you sign, from $0.02. If nothing fits, nothing is charged.

Describes what is in an image in about one second: pass an https URL or base64 and ask anything about it, from a one-line caption to reading a sign. Pairs with the rest of the chain: describe an image, translate the description, then have it read aloud. You are only charged if the description is delivered. No API key, no account.

Use when an agent must put a number on a token before trading or reporting, and be able to defend it: spot price read straight from the deepest Uniswap V3 pool against USDC, on Base, Ethereum, Polygon, Arbitrum or Optimism. Returns the pool address, fee tier, liquidity, sqrtPriceX96, tick and block, so the number can be audited instead of trusted. No aggregator and no API key: the source is the chain itself. Via eth_call.

Use when an agent has to produce a roll a player or an audit will check: dice with any number of faces, every individual roll, the total and the standard notation (3d6, 1d20). It uses the platform CSPRNG with rejection sampling, so every face is equally likely, which a plain modulo is not. Do not use to choose from a list you already have (/v1/random/pick) or for a secret (/v1/random/password).

Use when an agent must read a document it was handed: it turns it into clean Markdown in about a second - pass an https URL or base64 of a PDF, Word, Excel, PowerPoint, HTML, CSV or XML file and get the text back with its headings, tables and page markers, plus the token count. It reads the text layer, so a scanned page with no text layer comes back without text. You are only charged if the Markdown is delivered. No API key, no account.

Use when an agent must decide whether a domain is real and reachable before trusting it: everything DNS says about it in one call - whether it is registered, its A and AAAA addresses, nameservers, MX servers, SPF and DMARC, DNSSEC, and whether it looks parked. Built for going through a list of domains one at a time. Live DNS, no API key, no account.

Use when an agent must change part of an image and leave the rest untouched: pass the image and a black-and-white mask, and Stable Diffusion inpainting repaints only the white area following your prompt. Image and mask go as https URLs or as base64, up to 10 MB each. Returns a hosted image URL valid for 24 hours. You are only charged if the edit is delivered. No API key, no account.

Use when an agent is building an EIP-1559 transaction and must choose fee caps that will actually get it mined: the base fee plus suggested maxFeePerGas and maxPriorityFeePerGas at slow, normal and fast, computed from the last 20 blocks of real fee history. Do not use for a legacy gas price (/v1/evm/gas) or to price one specific call (/v1/evm/estimate-gas). No API key, no account.

Use when an agent must decide whether to write to an address, or clean a list before sending: it scores one email 0-100 with a verdict (ok, risky, disposable, undeliverable, invalid) and the evidence under it: every point lost is itemised with the field that proves it. 12,141 disposable domains from two maintained open lists pinned to a commit, 4,897 free providers, 1,018 role names, typo fix (gmial.com > gmail.com), live MX/SPF/DMARC. No SMTP probe, no API key.

Use when an agent has a name where it needs an address, or the other way round, before it can act: resolves an ENS name to its address or an address to its primary ENS name, read straight from Ethereum mainnet, with found telling you when there is no record. Do not use to check an address is well formed (/v1/util/address) or that it is a wallet (/v1/evm/is-contract). No API key.

Use when an agent is about to approve a spender, or is auditing what it approved before: how much of a token the spender may still move on the owner's behalf, raw and formatted with its decimals, plus unlimited, which flags a forgotten infinite approval. Do not use for what the wallet actually holds (/v1/evm/erc20-balance) or for whether the token is safe (/v1/evm/token-safety). No API key.

Use when an agent must decide whether to touch a token at all: a pre-trade risk check on Base, Ethereum, Polygon, Arbitrum or Optimism, straight from the deployed bytecode and live state. Detects mint, pause, blacklist, upgradeable proxy and mutable buy/sell tax powers, and reports whether ownership is renounced. It returns the EVIDENCE - the exact selector found and its byte offset - so an agent can apply its own policy. Deterministic: same contract, same answer.

Use when an agent must confirm a wallet holds enough of a token before it swaps, pays or settles: the ERC-20 balance of any address for any token (USDC, USDT, DAI or any other), returned raw (exact integer string) with its decimals, the formatted amount and the symbol, so no rounding is forced on you. Do not use for the native coin (/v1/evm/balance) or for what a contract is allowed to spend (/v1/evm/erc20-allowance). No API key, no account.

Use when an agent has a bare token address and must label or format it before showing or computing anything: name, symbol, decimals and total supply of any ERC-20 in one call. decimals is what stops an amount being shown a million times too big. Do not use for a holder's balance (/v1/evm/erc20-balance), the price (/v1/evm/token-price) or the risk (/v1/evm/token-safety). No API key, no account.

Use when an agent is about to sign a transaction and must know whether it will fail and what it will cost: the gas this exact call needs, the current gas price, the cost in ether, and wouldRevert, which says the transaction would fail before you spend anything finding out. Do not use for the price of a plain transfer (/v1/evm/gas) or for EIP-1559 caps (/v1/evm/fees). No API key, no account.