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Convert a number between bases 2 to 36 exactly (binary, octal, decimal, hex), with big-integer precision.

Birthday-problem collision odds for random IDs or hash outputs, or the count of items that reaches a target probability.

Use when an agent is about to pay another agent and needs one finished answer first: should you pay this payee? PayCheck ($0.50) runs Flow's whole checker stack on the payee — payee verdict (kind, activity, contract safety), wallet approval-exposure audit, and recent USDC settlement history on Base — returning one grade (ALLOW / REVIEW / BLOCK, 0-100), a verify_status, all checks, the evidence, an

Why did my transaction fail? Give a chain and tx hash; get status, decoded method, gas used vs limit, fee, token transfers, events and, for failed transactions, the decoded revert reason (Error(string), Panic codes, custom errors resolved by signature) with a plain-language fix. Pending transactions get a stuck-transaction diagnosis (nonce gap, underpriced fee) and the replace/cancel recipe. Chain

TTS-ready voiceover narration script for video ads, explainers, podcast ads, YouTube intros or phone greetings: clean plain-text script sized to your duration at ~150 wpm, a delivery-marked version (pauses, emphasis, breaths), timed segments, voice/tone direction, alt openings, pronunciation notes for TTS engines. Paste straight into Voicebox, ElevenLabs or any voice tool.

Eight quarters of a US public company's reported fundamentals, straight from SEC XBRL. Answers "Apple revenue last 8 quarters", "is NVDA net income growing", "MSFT EPS trend". Revenue, net income, diluted EPS per quarter with computed YoY changes and the exact XBRL tag used — every number verbatim from data.sec.gov companyfacts, nothing modeled. Accepts ticker, company name, or CIK. No LLM, no key

CSRD compliance roadmap for sustainability-reporting and compliance agents. Returns which ESRS standards apply, what must be disclosed, phase deadlines, and a double-materiality assessment guide.

Home battery storage ROI and payback calculator — Powerwall vs alternatives, backup-power value, with the IRA 30% tax credit and state incentives applied. For homeowner and solar agents.

Goldsky Edge RPC — prepaid balance, funds ~1000 requests at 5 atomic units each

Carbon-to-nitrogen ratio of a compost mix by the Cornell formula, or the greens-to-browns amounts that reach a target ratio.

Detects the likely real file format from filename, file creation time, file size, and the first 200 bytes of the file. Identifies common formats such as PDF, DOCX, XLSX, CSV, JPG/JPEG, PNG, WEBP, HEIC, TXT, HTML, MP3, WAV, MP4, AVI, MPEG, and WEBM, as well as about 15,000 other file types.

Competition check for an x402 idea: sellers, hosts, price range and how many have real buyers. Open space or crowded?

Income tax rates by country, corporate tax, capital gains tax, tax residency rules, crypto tax treatment for any jurisdiction. Worldwide guide giving a full tax overview of any country by scenario. Tax intelligence, not advice.

UK council-tax banding challenge check — neighbor-band cluster analysis against the free official VOA/SAA lookups, statutory route selection (formal proposal vs informal review, England/Wales/Scotland variants incl. the post-2023 Local Taxation Chamber), verified timelines (4/12-month decisions, 3/4-month appeals), evidence rules (the VOA rejects house-price-index data — verified), and the mandato

Signatures, press sheets and blank pages needed for a book of N pages at 4, 8, 16 or 32 pages per signature.

Homebrew formula status: version, license, deprecation or disablement, install counts over 30, 90 and 365 days.

npm package adoption: downloads last week and month, plus trend within the month and a popularity band.

Match a misspelled or branded drug name to RxNorm: best candidates with RxCUI identifiers, names and match scores.

Metres per pixel, map scale (1:N) and tile width on the ground for a zoom level and latitude.

Sheet-metal bend allowance, outside setback, bend deduction and flat length from angle, radius, thickness and K-factor.

Compare realtime and batch API cost for a workload with your discount fraction, and the money saved by waiting.

Exact age from a birth date: years, months, days, total days, weeks and hours, birth weekday and days to the next birthday.

Number of beads for a strand of a given finished length from bead size and spacing, with finished length and total weight.

Wax and fragrance oil weights for container candles from jar size, fill level, wax density and fragrance load.

Fewest land border crossings between two countries, with the countries passed through, or NO_LAND_ROUTE.

Best text color (black or white) for a background hex color, with contrast ratios and WCAG AA/AAA results for both.

Render a FEN position as an 8x8 ASCII board (White at the bottom) plus a piece-by-square list.

Airport weather now and ahead in one call: current flight category, worst forecast category, wind and trend.

Convert an airport code between IATA (3 letters) and ICAO (4 letters) and validate the format; reports unknown codes.

Current space-weather conditions — normalized NOAA SWPC Kp, solar wind, magnetic field, and X-ray flux used for solar-flare monitoring, with observation times and freshness.