Every agent-payable API.

Current USDC balance of an address on Base or Base Sepolia (balanceOf on the official Circle contract).

Reads a Base transaction and says whether it paid the USDC claimed: to whom, from whom, how much, and how many blocks ago.

Verify a USDC payment on Base: tx succeeded, USDC sent to the expected recipient (and from the expected sender), at least min_amount, enough confirmations. Returns verdict + decoded transfers. Unknown tx = not charged.

Total USDC circulating supply (all chains combined), in USD, source DefiLlama. No parameters.

USDC yield, best lending rates now ($0.002): supply and borrow APY of USDC on every Aave v3, Spark and Compound v3 market (Ethereum, Base, Arbitrum, Optimism, Polygon), utilization and size, highest APY first, read on chain every 10 minutes. Use to park idle USDC.

Generate UUID v4/v5/v7, ULID, or NanoID (single or batch), or parse/validate an existing id and extract its embedded timestamp.

Generate UUID v4/v5/v7, ULID, or NanoID (single or batch), or parse/validate an existing id and extract its embedded timestamp.

Generate v4 (random) or v5 (name-based) UUIDs in a batch; optional uppercase / no-hyphens.

Generate v4 (random) or v5 (name-based) UUIDs in a batch; optional uppercase / no-hyphens.

Random UUID generator — returns time-ordered UUIDv7 (RFC 9562, sortable, database-key friendly) or fully random UUIDv4, 1 to 100 per call, as lowercase canonical strings. Use for unique IDs, primary keys, request and correlation IDs, idempotency keys.

UUID inspector — parses any UUID (canonical, braces, URN or 32-hex form) and returns its version, variant, embedded timestamp for v1/v6/v7, nil/max flags, hex and URN forms. Use to validate identifiers or recover the creation time of UUIDv7 keys.

Generate 1 to 100 random version-4 UUIDs from a cryptographic random source. Use for IDs, idempotency keys and test data.

UUID generator API for agents: generate one to ten UUIDv4 identifiers for $0.001 USDC with no API key or subscription.

Generate a random UUID (uuid v4, RFC 9562) — 1..100 per call; format uuid|urn|hex|int.

Generate a random UUID (uuid v4, RFC 9562) — 1..100 per call; format uuid|urn|hex|int.

Cryptographically random UUID v4s, up to 100 per call, straight from the platform CSPRNG. For idempotency keys, request ids and correlation ids - the ones that must not collide.

Create an about 8-second UGC-style product ad from a product image and details. Pay once via x402, then poll statusUrl for the MP4 download.

UK beneficial ownership screening: company number returns persons with significant control (PSC) — name, kind, nationality, nature of control. Companies House public register data (OGL v3.0). Dates of birth never returned (UK GDPR).

Use this for UK due diligence on a Companies House number or name: official API profile, officers, PSCs, filings, charges, insolvency + rule-based red flags (overdue, dissolved, churn, mass-formation office). Sourced JSON. Example: {number:"00445790"} or {name:"TESCO"}. Prefer /uk-company-lite ($0.05) for status/flags only. $0.50.

Use this for a cheap UK company snapshot before paying for the full pack: status, SIC, office, compliance overdue, mass-formation check, red-flag names. Example: {number:"00445790"} → {name,status,red_flags,compliance}. Upsell: /uk-company for officers/PSC/filings/charges/insolvency. $0.05.

UK national carbon intensity (keyless, UK-scoped). POST {period|from|to}. Empty -> 400 not charged.

UK Police street-level crime (keyless data.police.uk). POST {lat,lng,date?,limit?}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. MUST project/trim (~1.5MB raw → tens of KB). Soft disclose fbi-wanted.

UK postcodes.io lookup (keyless). POST {postcode}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. Structured UK postal lane (≠ nominatim/photon geocoder filler; ≠ zip-code-lookup Zippopotam).

Great Britain UKCA & indefinite CE mark recognition conformity checker. Pass ?product_group=electronics|toys|machinery|ppe (default electronics). Returns applicable UK Statutory Instruments, GB CE recognition status, BS designated standards, UK importer postal-address labeling duties, and Northern Ireland Windsor Framework rules. Educational reference only; not legal advice.

OSHA NRTL electrical/battery safety standard mapper for ecommerce marketplace compliance gates. Pass ?category=power_supply|luminaires|kitchen_appliance|lithium_battery (default power_supply). Returns required UL/CSA standards (UL 62368-1, UL 1598/153, UL 1026, UL 2056/UN 38.3), verification directories, and counterfeit safety-mark red flags. Educational reference only; not legal advice.

UN Comtrade public preview trade data (keyless). POST {reporterCode,period,partnerCode,cmdCode,flowCode} (+ optional typeCode/freqCode/clCode/maxRecords). Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New trade vertical; no catalog adjacency.

UN 38.3 T1–T8 test applicability and test summary requirement.

Unbonding Queue Forecast analyses only the evidence supplied by the caller. It does not claim to query a chain, identify a legal status or replace an independent audit. Missing signals lower confidence and are listed explicitly; every classification includes the exact thresholds used.

Use before buying a Solana pump.fun memecoin: rug check and launch screen for one mint, from our record of every pump.fun launch since mid Oct 2026. Flags: creator buy or no buy at launch, Mayhem Mode bot volume, copied ticker, fake smart-money buys, paid DexScreener profile, $50k-in-a-minute jumps, serial creators, each with the share of similar launches that migrated or hit $50k. Returns risk normal/elevated/high with reasons. $0.02 USDC. Bad mint 400, unknown mint 404, both free.

Japan's unemployment rate from the Statistics Bureau's Labour Force Survey, not seasonally adjusted, monthly since 2000, broken out by total/male/female. Same e-Stat API family as estat.search/estat.table_data. Factual published data only; not investment advice or a forecast.

Unemployment rate by country. Unemployment rate of any country from World Bank data (ILO modelled estimates): total unemployment and youth unemployment (ages 15-24) as % of the labour force, for the last 1-10 years with the newest year first. Country by ISO code (SE, SWE) or English name. Read from a committed World Bank Open Data snapshot (CC BY 4.0), so every call answers at once; the snapshot date is in the answer. Use for labour-market and macro questions.

Rebuild a nested object from a single-level object whose keys are delimited paths (default delimiter `.`) — the inverse of flatten. Requires a flat object.

Fetch a URL and return link-preview metadata from Open Graph, Twitter Card and standard meta tags.

Unichain ERC-20 balance. ERC-20 token balance of a wallet on Unichain (USDC, USDT, WETH or any token, via balanceOf): raw amount, decimals, symbol and the human-readable amount, live from the token contract. Use to check stablecoin or token holdings before a transfer or trade; for the native coin use unichain_balance. Both inputs are 0x addresses (40 hex characters); no contract returns 404 and a non-ERC-20 contract 422, both uncharged.

Unichain ERC-20 token info. Look up the name, symbol, decimals and total supply of an ERC-20 token contract on Unichain, live from the contract. Use to identify an unknown token address or to format raw amounts; for a holder's balance use unichain_token_balance. Input is a ticker (USDC, WETH…) or the token's 0x contract address; an address that is not an ERC-20 contract returns 422, uncharged.

Unichain account nonce. Read the transaction count (nonce) of a 0x address on Unichain, both confirmed and including pending transactions. Use to build the next transaction or to tell whether an address has ever sent anything; for its balance use unichain_balance. A malformed address is rejected with 400, uncharged.

Unichain contract check. Check whether a 0x address on Unichain is a smart contract or a plain wallet: bytecode size, and whether it is an EIP-1167 minimal proxy and which implementation it points to. Use before sending funds or approving a spender; for a fuller risk verdict use check_counterparty. A malformed address is rejected with 400, uncharged.

Unichain gas price. Current gas price on Unichain (eth_gasPrice): gas price, base fee and suggested priority fee in gwei, plus what a plain ETH transfer (21,000 gas) costs right now. Takes no input. Use before sending a transaction or to decide whether to wait; for the fee a past transaction actually paid use unichain_receipt.

Unichain native balance. Native ETH balance (eth_getBalance) of any 0x wallet address on Unichain at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use unichain_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged.

Unichain recent event logs. Recent contract event logs on Unichain (eth_getLogs): the events a contract emitted over the last N blocks (1-1,000, default 50), optionally filtered by topic0 (the 0x 32-byte event signature hash). Returns up to 100 logs with block, transaction hash and topics. Use to watch transfers or contract events; for one transaction's outcome use unichain_receipt.

Unichain transaction. Look up an Unichain transaction by hash: sender, recipient, value in ETH, nonce, gas limit, the 4-byte function selector and its block. Use to see what was sent or whether it exists; for success or failure and fees paid use unichain_receipt, for emitted events unichain_logs. Input is a 0x-prefixed 64-hex hash; an unknown hash returns 404, uncharged.

Unichain transaction receipt. Transaction receipt on Unichain (eth_getTransactionReceipt): success or reverted, gas used, effective gas price, fee paid in ETH, number of event logs and any contract created. Use to confirm a payment or call went through; for sender, value and calldata use unichain_tx. Input is a 0x-prefixed 64-hex hash; a pending or unknown hash returns 404, uncharged.

Apply a Unicode normalisation form (NFC, NFD, NFKC or NFKD) to a string. Reports whether the text changed and its length in UTF-16 code units and code points.

UniProt protein search (keyless). POST {query} and/or {size?,accession?}. Empty → 404 not charged.

Unique request identifiers for agents. Use when an agent needs a collision-resistant ID for tasks, orders or idempotency keys without importing a library.

Uniswap (UNI) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network

Uniswap pool, V3 pool. Uniswap v3 pools for a token pair on Ethereum, Base, Arbitrum, Optimism or Polygon, read live from the factory and each pool: pool address per fee tier (0.01%, 0.05%, 0.3%, 1%), price of each token in the other, current tick, in-range liquidity and both token balances held, deepest pool first. Tokens by 0x address or ticker. Use to find the right pool, check depth before a swap or read a spot price.

Spot price of a token pair read directly from the deepest Uniswap v3 pool on Ethereum, Base, Arbitrum, Optimism or Polygon: price, inverse, fee tier, tick and liquidity. Tokens by symbol or address.

Convert a value between units of length, area, volume, mass, energy (kWh, MWh, BTU, GJ), power, pressure, temperature, speed, data size, time and compound units like kg/m^3 or mpg. Exact, no lookup tables to maintain.

Calculate price per kg or litre from your price and quantity or an available EAN pack size. Example: price_eur 1.29, quantity 4x125g. This is a calculation, not an observed store quote.