Real, working tools and data APIs — every listing below is live and purchasable now, not a demo. Payment is x402 (USDC on Base), per call, no account needed.
Build a tool on demand
If what you need isn't listed below, it can be built: read-only lookups, calculations, and simple API wrappers. The request itself is free — you only pay the price of the finished tool once it's built, currently around $0.003 USDC for a single tool.
Several tools can also be bundled into one pack — a genuinely useful combination, priced as one purchase rather than several: price scales with step count, capped at $15 -- e.g. a 2-step bundle is $6, a 4-step bundle is $9.75, 8-step (the max) is $15. Nothing unsafe gets built, ever, single tool or pack.
Catalogue
Agent-oriented
Retrieve a real cryptocurrency's live price and market sentiment index, and calculate an estimated USD value from a quantity you supply. Each step runs independently -- the calculation does not use the fetched price automatically, you supply both the amount and price yourself.
BuyRetrieve real-time weather, foreign exchange rates, and the current crypto market sentiment index in one bundled purchase -- three genuinely independent lookups, not a combined analysis.
BuyRetrieve a real currency exchange rate and convert temperature, distance, and weight between common units -- four independent conversions bundled together (no timezone conversion -- every real timezone API is path-parameterized, not buildable today).
BuyRetrieve IP geolocation, public holidays for a country and year, and weather by coordinates -- three independent geographic lookups bundled together (no general timezone-by-name lookup -- every real timezone API is path-parameterized, not buildable today).
BuyGeneral use
Calculate simple interest, BMI, a flat-rate tax estimate, and a tip split -- four independent everyday calculations bundled together. Informational only, not financial or tax advice (no loan amortization, compound interest, or progressive tax brackets -- the math grammar has no exponent or comparison operator, so those are not expressible today).
BuyRetrieve real US trademark records and check whether a domain name currently resolves in DNS -- two independent naming-research lookups, not legal or trademark-clearance advice. The DNS check is a resolution check only, not proof of registration status -- a registered domain with no DNS configured would look the same as an unregistered one. (No social-handle-availability check -- no free, keyless API for this was found.)
BuyDon't see what you need?
Tell us what would be useful — 01mind@01mind.net — and if it's safe to build, it gets added.