Geo-Parity

What a visitor needs before driving in each of the 41 spine countries: which side of the road, the national default urban, rural and motorway speed limits in the unit signed there (`speedUnit` km/h or mph, never converted), the blood-alcohol limit for ordinary drivers in g/100 ml (`bacNote` for novice and professional limits; 0 is a real zero-tolerance rule), equipment the law requires carried from a fixed vocabulary, and whether an International Driving Permit is needed (`idpRequired`, from GOV.UK's per-country table for a UK photocard licence; absent where that table is silent) — a hand-curated register with the authority's page and check date per row, added 13 Sep 2026; secondary-sourced entries are marked `confidence: "secondary"`. A limit not set nationally is ABSENT, never zero (Germany's motorways, US and Canadian limits). `country` for one entry, `countries` for a side-by-side; without either, ranks by `metric` (`speedMotorway` default, `speedUrban`, `speedRural`, `bacLimitPct`), highest first unless `sort=lowest`, optionally filtered by `drivesOn` and `idpRequired`; mph limits are ordered by their km/h equivalent for the sort only. For information only; conditions change — every response says so first.

{"country":"FR"}

The minimums a job's law sets in each of the 41 spine countries: paid annual leave in days with its `basis` (`working` or `calendar`, never converted), the minimum notice an employer and an employee must give in weeks (`noticeNote` where it rises with tenure), the probation ceiling in months and the ordinary weekly-hours ceiling — a hand-curated register with the labour authority's page and check date per row, added 13 Sep 2026; an entry read from secondary reporting because the official page could not be fetched is marked `confidence: "secondary"`. A fact the law does not set is ABSENT, never zero (the US sets no paid leave, notice or hours ceiling); federal countries carry the federal floor. `country` for one entry, `countries` for a side-by-side; without either, ranks by `metric` (`minAnnualLeaveDays` default, `noticeEmployerMinWeeks`, `probationMaxMonths`, `maxWeeklyHours`), most first unless `sort=fewest`, with the countries that set no figure in `excluded`. Statutory floors only — contracts and collective agreements usually give more. For information only — not legal advice; every response says so first.

{"country":"DE"}

What a hire actually costs the employer: the gross wage plus the employer's own social security contributions at the rate OECD Taxing Wages publishes (single earner, no children, 100% of the average wage), applied as a flat rate — the figure employer-of-record services quote for a fee. Pass `gross` (annual USD) for your own figure; without it the wage is the pay-range midpoint for the `occupation` and `seniority`, and `basis` says whether that wage is measured (ILOSTAT) or modelled. Employee-side rates and OECD's tax wedge are returned for context and never applied. Without `country`, ranks the spine by employer contribution rate. Coverage is the 25 spine countries OECD measures; the other sixteen return NO_DATA, never a 0% rate (New Zealand's 0% is real: it has no employer contributions). Every response carries caveats — contribution ceilings, excluded schemes — and it is not payroll or legal advice.

{"country":"DE","gross":60000}

Estimates local prices for a 32-item everyday basket (rent, pint of beer, groceries, transport, gym, …) in two countries, derived as usPrice × pppIndex^elasticity — non-tradables like rent swing harder across borders than world-priced goods like petrol (Balassa-Samuelson-style model). Returns per-item prices in USD and local currency, category subtotals, and a single-person monthly budget rollup. Model estimates, not price quotes.

{"base":"GB","target":"TH"}

Ranks countries by a fit score that blends the livability composite (internet speed, safety, healthcare access, air quality, English — measured, each with its own source year) with how far a monthly budget in USD goes against modelled essentials, using 0–10 weights per dimension (`cost`, `internet`, `safety`, `healthcare`, `air`, `english`; default 5 each). Region, budget and visa are FILTERS, never weights: `region` (a World Bank region name), `withinBudget` (default true; false keeps countries the budget does not cover), `needsVisa` (an eligible digital nomad visa on the budget). Each row carries the fit, quality and cost scores, modelled essentials, budget ratio and the nomad visa matched. A ranking of published figures against the weights given, not a recommendation; every response says so first.

{"budget":2500,"cost":6,"healthcare":8,"safety":9}

Geo-arbitrage FIRE analysis: given a portfolio and safe withdrawal rate, returns every country where the passive income sustains a lean ($32k US-equivalent/yr), comfortable ($55k), upper ($90k), or luxury ($150k) lifestyle at local purchasing-power prices — plus FIRE numbers per tier, nomad-visa income-floor eligibility, local-currency income, an SWR sensitivity band, (with savings/coast params) years until each country unlocks, and — where covered — a `statePension` overlay with the OECD net pension replacement rate (safety net from pension age; not subtracted from the FIRE numbers). Estimates only — not financial advice.

{"portfolio":400000,"swr":0.04}

Which of the 41 spine countries would let a founder in, and on what terms — a hand-curated register of founder/start-up routes, investor routes and `kind: "none"` entries, each with its one published money figure and what it is for (`minFunds.basis`: an investment to make, subsistence funds to hold, or funding raised from investors), whether an endorsing body must approve the project, duration, renewability, a path-to-residency flag, the official page it was read from and the check date; an entry read from secondary reporting because the official site could not be fetched is marked `confidence: "secondary"`. Give `funds` with optional `currency` for a match: routes the funds reach, near misses within 25%, routes needing money raised from investors rather than held, routes with no published figure, exclusions with the reason, and the countries with no route. Or `country` for one entry, `countries` for a side-by-side. Thresholds are compared in USD at the site's FX snapshot; endorsement and business-plan tests are not modelled, and programmes pause and reprice. Published rates and facts on the dates shown, for information only — not tax, legal or immigration advice; every response says so first.

{"currency":"GBP","funds":50000}

Given a set of cities/timezones and each participant's local working hours, find the longest UTC window where everyone is simultaneously within their working day (DST-accurate), AND score the team's overall timezone friction. Returns the overlap in UTC and in each participant's local time (or null with the best partial coverage), plus a `friction` block: a 0–100 score, grade (Effortless/Manageable/Strained/Broken), daily shared hours, coverage, and the `loneWolf` — the member whose removal would free the most team overlap. Useful for scheduling and for hiring/team-composition decisions.

{"zones":["Europe/London","America/New_York","Australia/Sydney"]}

Digital-nomad visa Income Matcher: given a monthly remote income (any currency) and household size, computes each program's real income threshold (base plus its published per-dependent uplift) and returns the programs you qualify for plus the near misses just out of reach — with duration, renewability, tax notes and official source URLs. Curated summaries — verify with the official source before applying.

{"children":1,"currency":"EUR","income":4000,"partners":1}

Which of the 41 spine countries would let a retiree in, and on what terms — a hand-curated register of retiree, passive-income and deposit routes (kind), each with minimum age, monthly income or deposit threshold in its own currency, duration, renewability, a path-to-residency flag, the official page it was read from and the check date; an entry read from secondary reporting because the official site could not be fetched is marked `confidence: "secondary"`, and countries with no route are `kind: "none"` with a line saying why. Give `income` (monthly) with optional `currency`, `age` and `savings` for a match: routes the income reaches, near misses within 25%, deposit routes (judged only when `savings` is given — a pension says nothing about a fixed deposit), routes with no published figure, exclusions with the reason, and the countries with no route. Or `country` for one entry, `countries` for a side-by-side. Thresholds are compared in USD at the site's FX snapshot; dependants raise them. Published rules and modelled figures on the dates shown, for information only — entitlements depend on a person's record and consulates decide; every response says so first.

{"age":62,"currency":"GBP","income":1500}

Student-visa routes for the 41 spine countries — a hand-curated register of the funds a student must show (amount, currency, per month or year), the work hours allowed in term, the post-study stay in months, a path-to-residency flag, the official page it was read from and the check date; secondary-sourced entries are marked, and countries with no route are `kind: "none"`. No tuition figures: no citable structured source exists. Give `funds` with optional `currency` and `per` (year default; month) for a match: routes the funds reach, near misses within 25%, routes with no published figure, exclusions with the reason, and the countries with no route. Or `country` for one entry, `countries` for a side-by-side. Funds are compared per year in USD at the site's FX snapshot; figures move each academic year. Published rules for information only — not immigration advice; every response says so first.

{"currency":"GBP","funds":20000}

What to sort out with a travel clinic, as facts from TravelHealthPro (NaTHNaC, the UK's national travel-health centre) with the source page linked per row: the yellow-fever certificate position (required for all arrivals, required when arriving from a risk country, or none), whether the country itself carries yellow-fever risk, the vaccine names recommended for most UK travellers and for some, and whether malaria guidance exists — plus the health-risk names the FCDO lists. Give `country` for one country or `countries` (two or more) for a side-by-side. Facts only, never NaTHNaC's prose; the reasoning is at the linked page. These are recommendations for UK travellers and depend on itinerary and medical history — a clinic decides for a person. The UK itself is NO_DATA (no FCDO page, so no link), never an empty list. Official sources on the dates shown, for information only — conditions change; check the source before travelling. Every response says so first.

{"country":"BR"}

The World Bank's Women, Business and the Law reading of each country's statute (2026 edition, 41 spine countries). Give `country` for one country: the Legal Frameworks index (0-100), eight topic scores (mobility, workplace, pay, marriage, parenthood, entrepreneurship, assets, pension), the coded answers grouped by topic — can a woman choose where to live, travel abroad, get a job the same way as a man, is equal pay for work of equal value mandated, can she obtain a divorce and head a household, own and inherit equally, open a business and access credit without discrimination — and the full, partial and mandatory retirement ages for men and women. Give `countries` (two or more) for the index, topics and ages side by side, or neither for the spine ranked by `metric` (`index`, a topic, `retirementAgeMen`, `retirementAgeWomen`). A partial answer keeps WBL's fraction as `{partial}` rather than rounding to yes or no; a true says the provision exists in law, not that it is enforced. Statutory figures for information only — not legal or tax advice; every response says so first.

{"country":"SA"}

The registry of every dataset behind the site's figures — price levels, wages, housing, healthcare, holidays, working time, inflation, remittance prices, and the rest. Each carries `updated`, the date it was last REBUILT (a fetcher ran, or a person reviewed it), and — where the dataset knows it — `vintage`, what the figures themselves describe: a year, an edition, a quarter, or the source's own publication date. THE TWO ARE DIFFERENT AND OFTEN YEARS APART: exchange rates rebuilt in 2026 are 2025 annual averages, and city rents rebuilt in 2026 are from 2023. Judge how current a figure is by `vintage` and fall back to `updated` only where `vintage` is absent, which means the dataset has none of its own — a curated register's vintage is the day a person read the authority's page. Also says whether it is FETCHED by a script or REVIEWED by a person, the page it appears on, and the refresh script. With `since` (YYYY-MM-DD), `changed` lists only the datasets rebuilt strictly after that date, so an agent that cached a figure can decide what to re-fetch instead of re-fetching everything. Pure: `since` comes from the caller. Carries no figures and therefore no attribution block; each dataset's provenance travels with the tool that serves it.

{"since":"2026-09-01"}

Convert a base salary from a home country into a cost-of-living-fair local equivalent: S_local = S_base × (I_target / I_home), where I is a US-relative price level. Omit `target` to receive a localized salary matrix across every country in the source — useful for pricing one offer across many markets. Returns USD purchasing-power equivalents, not currency-converted amounts.

{"base":150000,"home":"US","source":"consensus","target":"ES"}

Passport Power: for a given country's passport, returns the visa-free-access score (visa-free + visa-on-arrival + eTA destinations), global rank and percentile among all ~199 passports, and the full destination breakdown by access type with names resolved. Omit country for the ranked league table. Reference data from the open imorte/passport-index-data (public domain) — confirm entry rules with the destination authority before travel.

{"country":"SG"}

A fixed pension paid from one country and spent in another, after the exchange rate, the destination's price level and the destination's inflation. Converts `amount` in `currency` at the site's FX snapshot, re-prices it at the destination through the PPP engine (the same price-level comparison as calculate_ppp), and projects it flat at the destination's latest annual inflation for `years` (1-40, default 10), returning what it is worth there today and after the period, in USD and local currency, with the share of purchasing power lost. Without `amount`, the origin's typical state pension is used — OECD's net replacement rate for an average earner on the modelled median wage — and `basis` says so; 33 origins have a rate, the rest need `amount`. Holds the pension and the exchange rate fixed and says so; many state pensions are uprated, and some are frozen for expatriates in particular countries. Not financial advice.

{"amount":1000,"currency":"GBP","from":"GB","to":"PT","years":10}

When a distributed team can actually all work. Joins the two halves no free tool puts together: the weekdays on which NOBODY is on a public holiday (the engine behind compare_public_holidays) and the daily working-hour overlap across the members' time zones (the engine behind find_meeting_slot), evaluated on 15 January and 15 July so daylight-saving asymmetry is visible, and multiplied into conservative shared working hours per year. Members are ISO alpha-2 country codes; each country is placed in the time zone of its representative city, and countries spanning several zones (US, CA, BR, MX, AU, ID) are flagged `multiZone` — append `@IANA/Zone` to override (e.g. `US@America/Chicago`). Covers the 41-country spine EXCEPT India, Thailand, Malaysia, the UAE and Saudi Arabia, which have no published holiday calendar and return NO_DATA naming them rather than a calendar with no holidays. Working-hour windows are a stated assumption (09:00-18:00 local unless given), not a measurement; annual leave is not modelled.

{"members":"GB,DE,US"}

Whether a foreigner may buy residential property in each of the 41 spine countries: an ownership band (`free`, `restricted`, `leasehold-only`, `prohibited`), the main restrictions in a sentence, whether land itself may be owned, and the headline transfer tax a buyer pays with a note on surcharges and fees — a hand-curated register with the official page and check date per row; an entry read from secondary reporting because the official page could not be fetched is marked `confidence: "secondary"`. `country` for one entry, `countries` for a side-by-side; without either, all 41 ranked free-first then by transfer tax, optionally within one `band`. Rules change by decree and by region (Canada's ban runs to 2027, Australia's established-home ban to March 2027, Saudi Arabia's new law from January 2026). Published rules for information only — not legal advice; every response says so first.

{"country":"TH"}

Quality-of-Life vs Cost matrix: ranks 41 countries by a user-weighted composite of livability metrics (median broadband Mbps, safety, healthcare, air quality, English usability — curated country-level data replacing the discontinued Teleport API) against the monthly cost of single-person essentials at local purchasing-power prices. Returns per-country composite and value scores, lifestyle label for your budget (comfortable → like royalty), nomad-visa eligibility, and days-to-tax-residency. Curated estimates — verify locally.

{"maxBudget":3000,"minInternet":80}

What it costs to send money from one country to another, from the World Bank's Remittance Prices Worldwide survey (newest quarter, CC BY 4.0): the mean total cost — fee plus exchange-rate margin — of sending USD 200 and USD 500 across the providers surveyed on that corridor, the cheapest provider found, and how many were surveyed. With `amount` (USD), a quote at the nearer of the two surveyed bands (below USD 350 uses the 200 figures), and the response says which. Give `from` AND `to` for one corridor; only one of them for a ranking of surveyed corridors out of a sender or into a receiver, cheapest first. The survey covers ~350 high-volume corridors (~46 sending countries, ~96 receiving); a pair it does not survey returns NO_DATA, never a figure borrowed from a neighbour. Your own quote will differ by provider, payment method and day.

{"amount":500,"from":"GB","to":"IN"}

Given a desired annual net income, compute the freelance hourly and day rate required after taxes, self-paid health insurance, weeks off, and billable utilization. Uses the same per-country effective-rate presets as compare_contract; all overridable. Estimates only — not tax advice.

{"country":"US","desiredNet":100000,"utilization":0.7,"weeksOff":6}

Does a fixed monthly pension cover a month of local essentials. Given `amount` and `currency` (default GBP 1,500), returns every spine country ranked by coverage — the pension in USD divided by the country's MODELLED monthly essentials (the site's price basket scaled by the PPP price level, checked against real series and wrong both ways) — with the essentials figure, healthcare out-of-pocket per person per month (World Bank / WHO), life expectancy (World Bank) and the kind of retiree visa the country offers beside each row. Coverage is an ordering, not a budget; the pension is taken as fixed at the site's FX snapshot. Different from `pension_abroad`, which re-prices a pension against the origin's price level to say what it is worth relative to home. Published rules and modelled figures on the dates shown, for information only — entitlements depend on a person's record and consulates decide; every response says so first.

{"amount":1500,"currency":"GBP"}

Given a user-population breakdown, find the cloud host region that minimizes population-weighted round-trip latency (argmin_j Σ_i P_i × L_ij), and compute the optimal multi-region split (each user region routed to its nearest host). Latency is estimated from great-circle distance via a fibre-propagation model, not measured.

{"users":"US-East:40,UK:30,Germany:30"}

What two governments say about going. Give `country` (ISO alpha-2) for one country: the UK FCDO's level (none, all-but-essential to parts, all-but-essential, all travel to parts, all travel) with its latest change and date, the FCDO's passport-validity and visa sentences for British citizens and the health risks it lists, and the US State Department's advisory level (1 exercise normal precautions to 4 do not travel) with its headline. Give `countries` (two or more) for the levels side by side, or neither for the 41-country spine ranked least-restricted first by FCDO level then US level (`sort=highest` inverts). The two governments grade differently and often disagree; neither is rescored. The FCDO publishes nothing for the UK and the State Department nothing for the US, so those blocks are absent with a caveat, never a made-up level, and a country with neither is excluded from the ranking. Official sources on the dates shown, for information only — conditions change; check the source before travelling. Every response says so first.

{"country":"TH"}

What a company in `from` keeps back when it pays dividends, interest, royalties or technical fees to a recipient in `to`: OECD's standard withholding rates for the payer's country and, for the pair, the treaty rate where OECD publishes one, with the saving in points per income type. Direction is the payer's, never reversed; `from` equal to `to` is rejected. A pair with no published treaty rate reports the standard rate and says so — that is not the same as no treaty existing, and the treaty figure is the maximum the treaty allows (a residence certificate is usually needed). Without `from`, ranks all 41 by standard rate on `type` (dividends default). Standard rates for 41 of 41; treaty rates for about 1,300 payer–recipient pairs within the spine (the Philippines never appears as a payer). Published rates and facts on the dates shown, for information only — not tax, legal or immigration advice; every response says so first.

{"from":"TH","to":"GB"}