22 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Full website audit in one call: accessibility (WCAG 2.1 A/AA via axe-core), on-page SEO, HTTP security headers and page speed / page weight, from a single browser load of one URL. Cheaper than four separate calls; if any...
Fact-checking and claim verification API for AI agents. Verify whether a cited source supports a claim; check statistics, dates, units and populations in research reports before publication. Separate web research returns...
Verify factual claims and check whether cited sources support them. Fact-check statistics, dates and source attributions in agent research and reports against web evidence, preserving reporting periods, units and populat...
IBAN validator: validate an IBAN's length for its country, permitted character classes per field, and the ISO 7064 mod-97-10 check digits. Returns the verdict with a specific failure reason, the electronic and print form...
Fits reference = slope × observed + offset with ordinary least squares over paired caller-supplied readings. It reports residual diagnostics and does not claim traceability, uncertainty accreditation or suitability beyon...
Cron expression explained in plain English with the next run times in any time zone - validates a 5-field cron and handles DST
Official government and open data API: 94 public sources in one endpoint, 51 real-time, across India, Europe, Asia, Africa and Latin America. India: disaster alerts, CPI inflation, GDP, jobs, IFSC. World: earthquakes, we...
AgentCheck: independent report on an x402 seller before you pay it. Are its buyers real (repeat wallets on their own money) or funded by the seller itself, measured from 30 days of on-chain payments, plus results of our...
Official Spanish indicators from INE: CPI (annual and monthly change), EPA unemployment rate (total and under 25) and house prices (annual and quarterly change), with recent periods. Without an indicator it returns the l...
Statistics of numbers. Descriptive statistics for a list of numbers: count, sum, mean, median, mode, min, max, range, population and sample variance and standard deviation, quartiles with IQR, and the 90th, 95th and 99th...
GDP by country, World Bank data. GDP of any country from World Bank data: GDP in current US dollars, annual real GDP growth in % and GDP per capita in US dollars, for the last 1-10 years with the newest year first. Count...
Population by country. Population of any country from World Bank data: total population, annual population growth in % and the urban share of the population in %, for the last 1-10 years with the newest year first. Count...
A/B Test Readout Check — Checks the written readout of ONE A/B test (a paragraph, an email, a table or a slide transcript) for the five statistical mistakes that turn a no-effect test into a "win", and lists only those,...
Profile a CSV (delimiter auto-detected): rows, columns, type of each column, nulls, unique values, min, max, mean, median, std, sum, top values, duplicate rows and a sample. Understand a dataset before using it.
$0.0002/MB. Instant dataset profile — column types, null counts, cardinality, min/max/mean — before you commit to processing. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Official monthly inflation (HICP, annual rate of change, all items) for EU countries, the euro area and the EU from Eurostat. Give a country code (NL, DE, FR, EA20, EU27_2020) and the number of recent months. Use it for...
Compute the full descriptive-stats panel for an array of numbers in one call: count, sum, mean, median, mode, stddev (sample), variance, min, max, range, q1, q3, IQR. Beats calling 12 separate tools when you already have...
Counts for any text in one call: characters (Unicode code points), words, sentences, paragraphs, avgWordLength, readingTimeMinutes (200 words a minute) and estimatedTokens, a rough LLM token estimate (about 4 characters...
Descriptive statistics for a list of numbers: count, mean, median, sample stdev/variance, min, max.
Ordinary least squares simple linear regression (y = slope*x + intercept) with R-squared.
Pearson correlation coefficient between two equal-length numeric series.
Nth percentile of a list of numbers (linear interpolation between closest ranks).