Every agent-payable API.

Aspect ratio calculator - reduce width and height to a ratio and orientation

Aspect ratio calculator - reduce width and height to a ratio and orientation

Crop-to-cover calculator - cover scale, scaled size and centered crop overflow for a target box

Crop-to-cover calculator - cover scale, scaled size and centered crop overflow for a target box

Proportional resize calculator to fit media inside a bounding box - scaled size and factor

HCPCS Level II Code Search (CMS). HCPCS Level II medical billing code lookup (CMS), e.g. E0601 or J1100: short and long description, code category (DME, drugs, supplies, ambulance, orthotics), added / effective / terminated dates and obsolete flag. Public domain; CPT codes are AMA-licensed and not covered.

HCPCS Level II Code Lookup (CMS). HCPCS Level II medical billing code lookup (CMS), e.g. E0601 or J1100: short and long description, code category (DME, drugs, supplies, ambulance, orthotics), added / effective / terminated dates and obsolete flag. Public domain; CPT codes are AMA-licensed and not covered.

Fixed-rate mortgage calculator - monthly payment, total paid and total interest

Art Institute of Chicago artwork record with provenance, exhibition history and object metadata

IP Address Lookup (owner, country, range, abuse contact). IP address lookup from the regional internet registries (RDAP): network name and owner organization, country, address range and CIDR, abuse contact email, registration dates and reverse DNS. IPv4 and IPv6.

Email Address Validation (syntax, MX, disposable, role, typos). Email address validation before you send: syntax, whether the domain exists and accepts mail (MX, null-MX), disposable/throwaway provider (8,900+ domains), role address, free provider and typo suggestions (gmial.com -> gmail.com), with a deliverable / risky / undeliverable verdict. No mail is sent.

Options Chain (strike/IV/OI, nearest expiry). Full BTC/ETH options chain for the nearest (or a chosen) expiry: strike, call/put, mark implied volatility, open interest and 24h volume per contract.

Options Gamma Exposure (GEX). BTC/ETH net gamma exposure (GEX), computed from real open interest and implied volatility via Black-Scholes gamma across all listed expiries: total net GEX, call/put split, top strikes by gamma concentration, and a positive/negative regime read. States its dealer-positioning convention explicitly — this is a market heuristic, not a measured fact.

Options Implied Volatility Index (DVOL). BTC/ETH options implied volatility (Deribit DVOL index): current level, 24h change and a plain-language volatility-regime read.

Options Max Pain (nearest expiry). BTC/ETH options max pain for the nearest (or a chosen) expiry: the strike that minimizes total in-the-money option value, computed from real open interest by strike, plus put/call OI ratio.

Package dimensional weight calculator - volume, dimensional weight and billable weight

Packaged-food allergen and may-contain declarations by barcode, with ingredients (Open Food Facts)

Page metadata for any URL - title, description, Open Graph image, author, published date and canonical URL

Paint quantity estimator from area, coverage, coats and waste - liters and gallons

Pallet count planner from unit count and units per pallet - pallets, unused capacity and utilization

Academic Paper Search (250M+ works, OpenAlex). Academic paper search across 250M+ scholarly works (OpenAlex): title/abstract match, sort by relevance, citations or newest, filter by year and open access. Each paper: authors, venue, year, DOI, arXiv id, PMID, citation count, topic, open-access PDF link and abstract.

PubMed Biomedical Literature Search (with abstracts). PubMed biomedical literature search (PubMed query syntax allowed) with full structured abstracts, journal, year, authors, publication types, MeSH terms, DOI and free full-text (PMC) links.

Latest arXiv Papers by Category. Newest arXiv submissions in any category (cs.AI, cs.CL, cs.LG, q-fin, astro-ph...), optionally filtered by keywords: title, authors, categories, abstract, PDF link, submitted time.

Paper Lookup by DOI, arXiv ID or PMID (with abstract). Look up any paper by DOI, arXiv id, PMID or OpenAlex id: full abstract, all authors with institutions, venue, citations, references count, topic and PDF link. arXiv ids are read from arXiv itself, so brand-new preprints resolve.

Hyperliquid Perps Overview. Hyperliquid perps overview: total open interest and 24h volume, top markets by open interest and volume, biggest 24h gainers and losers with their funding.

Hyperliquid Perp Market. Hyperliquid perp market for any coin: mark and oracle price, 24h change and volume, open interest in coins and USD, premium, max leverage, and funding (hourly and annualized) compared with Binance and Bybit.

Cross-Exchange Perp Funding (Hyperliquid, Binance, Bybit). Perp funding rates compared across exchanges: every Hyperliquid perpetual with Hyperliquid, Binance and Bybit funding rates normalized to annualized %, sorted by the biggest spread between venues, with the funding-rate arbitrage direction (which venue to short / long) and crowded-positioning flags. Filter by open interest.

USDA plant hardiness zone for a U.S. ZIP code - zone, minimum temperature range and coordinates

Planting density estimator from area and row spacing - estimated plant positions

Poetry Search: full poems by author, title or line (public domain). Full public-domain poems by author, title words or words in a line: title, author, line count and every line.

Procurement reorder point calculator - safety stock, inventory position and reorder-now flag from demand and lead time

Procurement reorder point calculator - safety stock, inventory position and reorder-now flag from demand and lead time

Property cap rate calculator from net operating income and value

Property coinsurance calculator from value, required percentage, coverage carried, loss and deductible

Property coinsurance calculator from value, required percentage, coverage carried, loss and deductible

Public library lookup - description, country, coordinates, founding date and website (Wikidata)

Sourced Quotes by Person (Wikiquote). Sourced quotes by a person from Wikiquote, with the section and citation for each; filter by keyword; misattributed and disputed quotes excluded.

Radioactive decay calculator from initial amount, half-life and elapsed time - remaining amount and decay constant

Real-time earthquakes worldwide (USGS) - magnitude, depth, location and time, filterable by magnitude and radius

Recent bird occurrence records near any point - species, time, location and distance (GBIF)

Recruiting cost-per-hire calculator from total cost and hires

Recruiting funnel conversion metrics from applicant, interview, offer and hire counts

Time-to-hire calculator - average days per hire and hires per 30 days

Country Profile: facts + latest economic indicators. Country profile by name or ISO code: official and native names, ISO codes, capital, region, borders, languages, currencies, calling codes, TLD, area, plus latest World Bank indicators: population, GDP, GDP per capita, inflation, unemployment, life expectancy, internet use, trade.

Render Diagrams: Mermaid, Graphviz, PlantUML, D2 → SVG/PNG. Render diagram code to SVG: Mermaid, Graphviz, PlantUML, D2, C4, BPMN, ERD, Vega and more; returns the SVG plus shareable SVG/PNG/PDF image URLs, or a parse error (not charged) for invalid source.

Open-Source License Facts (permissions, conditions, limitations). Open-source license facts by SPDX id: OSI/FSF status, plain-language summary, permissions, conditions and limitations (commercial use, patent grant, disclose source, same license...), copyleft flag, how to apply, optional full text.

Rent-vs-buy monthly screen - mortgage, tax, insurance, maintenance and HOA compared with rent

Retail markdown and stacked discount calculator - final price, tax and savings

Rolling visa stay-days calculator - days used, days remaining and over-allowance flag from trip dates

Rule of 72 doubling-time calculator - approximate and exact years to double