Find air quality monitoring stations that are reporting now, near a place or across a country: name, operator, reference-grade flag, coordinates, distance, pollutants measured and last reading time.

US demographics by ZIP code (Census ACS 5-year): population, median household income, median age, home value, rent, education, unemployment and poverty.

Product barcode lookup (Open Food Facts): name, brand, ingredients, allergens and traces, Nutri-Score, NOVA processing group, eco-score and nutrition per 100 g for packaged food from its EAN/UPC barcode.

US labor and price statistics from the Bureau of Labor Statistics: CPI and core CPI, unemployment, payrolls, average hourly earnings, PPI, participation and job openings (or any BLS series id), with 12-month change.

Breached password check: is this password in known data breaches, and how often? Send only the SHA-1 hash (never the password); just the first 5 characters reach Have I Been Pwned (k-anonymity). Up to 50 hashes per call.

SIWE Signature Verifier: Verify a Sign-In-With-Ethereum (EIP-4361) signature. Stateless oracle: checks the signature against the message and returns the wallet address + chainId. Never mints sessions or consumes nonces. Get a checksummed address first via wallet_checksum. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_verify_siwe.

Air pollution history for any place: daily average, min and max of PM2.5 (or PM10, ozone, NO2, SO2, CO) from the nearest active monitor for up to 365 days, with daily US AQI, worst day, days over the WHO guideline and an improving/worsening trend.

Wallet snapshot on Base or Ethereum: native ETH balance, nonzero balances of the major tokens (USDC, USDT, WETH, DAI, cbBTC, WBTC and more), transaction count and contract flag.

Car VIN check: decodes any VIN (year, make, model, trim, engine, drive, plant) and adds the model year's safety recalls, complaint counts by component and NHTSA crash-test ratings.

Live foreign-exchange rates (ECB reference, 30+ currencies) and conversion. Query base, symbols and an optional amount.

Search for cards with flexible filtering options.

Real-time quote in one call: current price, intraday open/high/low, previous close with change and change %, volume metrics, 52-week high/low, and 50/200-day moving averages from real Yahoo Finance data. Works for stocks, forex pairs (e.g. EURUSD=X), and commodity futures (e.g. GC=F gold, CL=F oil), not just equities. $0.005/call.

Fetch any public webpage and get just its readable text (no HTML, scripts or styles) plus title and meta description, ready for an LLM context window. Optional max_chars cap. Returns 404 if the page is missing, 502 if blocked or unusable, 504 on timeout -- failed calls are not charged. No JavaScript rendering. $0.025/call.

Business Frameworks · business-frameworks/market/decide/binding-node@1.2, applied — POST a chain from end demand to the upstream limit with each node's tightness and each edge's weight and lag; get effective tightness along the path, the binding node, the dominant transmission and the lag to each seat. Deterministic (the node's rule, no model): figures, verdict, action and check with the 256-token node text — schema free at GET /apply/market/decide/binding-node.

Business Frameworks · business-frameworks/market/decide/rent@1.2, applied — POST pricing power, the crossing year, the base year and the horizon — or a list of nodes to rank; get durability (the years before new supply crosses demand) and rent over the horizon, ranked where several nodes are sent. Deterministic (the node's rule, no model): figures, verdict, action and check with the 186-token node text — schema free at GET /apply/market/decide/rent.

NIP-98 Nostr Auth Verifier: Verify a NIP-98 Nostr HTTP auth event. Returns the signer pubkey. Stateful replay protection: each event id can only be verified once. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/wallet_verify_nostr.

Git Changelog Generator: Diff git commits and generate a structured breaking-change changelog. Provide repository_url, base_commit, and optional target_commit. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools/changelog_git.

Business Frameworks · business-frameworks/market/decide/rent@1.2 — the decision rule for pricing rent over the horizon: durability as the years to the crossing, capped at the horizon; rent as pricing power held for those years; nodes ranked by it, as inputs, rule, action and check. Call when pricing power has to become a margin plan with an end date; returns 186 tokens of original synthesis (terse 122); to run it on your own figures, POST /apply/market/decide/rent.

Business Frameworks · business-frameworks/market/decide/shock@1.2 — the decision rule for transferring a shock to a seat: an analog carries only when its buyer tiers match today's, otherwise the shock type's prior sets the verdict steps and the lag, as inputs, rule, action and check. Call when a forecast's bad case has to carry a named shock with a magnitude and a lag; returns 298 tokens of original synthesis (terse 228); to run it on your own figures, POST /apply/market/decide/shock.

Business Frameworks · business-frameworks/market/why@1.2 — why the constraint is read before the price: a node's position is what is committed, how far lead times have stretched and whether it is on allocation; a price only checks that read. Four rules follow. Call before any market scale band or decision; returns 372 tokens of original synthesis (terse variant 147) with related handles; free layer at /catalogue.