Multilingual Astrology API: How to Verify Language Support

Ask an insight API vendor how many languages they support and you get a number, usually a large one, arriving under a grid of native scripts. It settles the question, because nobody has ever told the buyer what to do next.

The problem is that the number is not checkable. It does not say which endpoints are covered, whether the interpretation prose changes or only the field labels, what happens when you ask for a language that is not on the list, or whether calling twice returns the same words. Those five things are what a language actually buys, and every one of them is measurable from outside the vendor, in minutes, with no account.

This is a checklist you run against any provider, including this one. Each check below states what to run, what a good answer looks like, and where RoxyAPI currently falls short.

What does a language count on an insight API actually promise?

A language count promises that some text somewhere in the response can come back in that language. It does not say how. There are two mechanisms in this category and they behave so differently that the same headline number means opposite things depending on which one is underneath it.

The first is generation at request time: a language model is prompted to answer in the target language. The second is fixed localized text, where a translator writes the strings once and the API serves them. Breadth and repeatability pull in opposite directions here.

Neither is wrong. If you need to add a dozen more languages next quarter, generation is the only mechanism that gets you there, and that trade is a reasonable one to make. If you are shipping readings that a practitioner will stand behind, repeatability and review matter more than the count. Decide which you are buying before you compare numbers, because two counts produced by different mechanisms are not the same unit.

Ready to build this? The Astrology API returns fixed localized interpretation text across eight languages on one key, with no per-language pricing tier. See pricing.

How to count translated endpoints without an account

Read the language parameter straight off the live OpenAPI document. A published spec lists every operation and every parameter it accepts, so the count of translated operations is a property you can compute rather than a figure you have to accept. This command returns the number of operations that take a lang parameter:

curl -s https://roxyapi.com/api/v2/openapi.json \
  | jq '[.paths[][] | select([.parameters[]?.name] | index("lang"))] | length'

The interesting half is the 26 that do not take it. Swap index for index(...) | not and read the list: planetary positions, ashtakavarga scores, sub lord tables, transit crossings, city search, the usage counter. Those return numbers and coordinates, and there is nothing in them for a translator to touch. That is the correct shape. The honest exception is the dream symbol catalog, which is prose and is currently English only.

Then ask the question a count can never answer: which endpoints does that list cover? Language support is a matrix of languages by endpoints, and a headline number is only its widest row. Vendor documentation routinely tiers it, publishing the full advertised list for the daily horoscope feed and a materially shorter one, sometimes half or fewer, for natal, Vedic and matching endpoints. Read the language note per endpoint group rather than the marketing page. One more command tells you whether a provider tiers it, by collecting every distinct language list the spec declares:

curl -s https://roxyapi.com/api/v2/openapi.json \
  | jq '[.paths[][].parameters[]? | select(.name=="lang") | (.schema.enum|join(","))] | unique'

A single entry comes back. All 156 operations declare the identical eight languages, so the list does not shrink as you go deeper into the API. If that command returns two or more entries against another provider, the headline number belongs to whichever endpoints got the longest one.

Which response fields must not change when the language does

Request the same resource twice, once with no language and once with your target language, and diff the two. What matters is not how much changed but which fields held still. Identifiers, enums, and anything your code branches on must survive the language switch, or your switch statements, cache keys, and CSS class names break the day someone changes a locale.

Here is a Western sun sign in Spanish:

curl -s "https://roxyapi.com/api/v2/astrology/signs/aries?lang=es" \
  -H "X-API-Key: YOUR_KEY" | jq '{element, elementLocalized, rulingPlanet, rulingPlanetLocalized}'

{
  "element": "fire",
  "elementLocalized": "Fuego",
  "rulingPlanet": "Mars",
  "rulingPlanetLocalized": "Marte"
}

The machine value does not move. The display copy arrives beside it. Three strategies appear across the API and each is picked by who reads the field:

A Human Design gate shows the sibling pattern most clearly: name stays Self Expression in every language while nameLocalized returns Autoexpresión, so a Spanish interface renders Spanish and the lookup table behind it never learns that Spanish exists. Run the same diff on a tarot card and 31 of 35 fields change while id, arcana, number and the image path hold.

curl -s "https://roxyapi.com/api/v2/tarot/cards/tower" -H "X-API-Key: YOUR_KEY" > en.json
curl -s "https://roxyapi.com/api/v2/tarot/cards/tower?lang=es" -H "X-API-Key: YOUR_KEY" > es.json
diff <(jq -S . en.json) <(jq -S . es.json)

const get = async (lang?: string) => {
  const url = new URL('https://roxyapi.com/api/v2/tarot/cards/tower');
  if (lang) url.searchParams.set('lang', lang);
  const res = await fetch(url, { headers: { 'X-API-Key': process.env.ROXYAPI_KEY! } });
  return res.json();
};

const [en, es] = await Promise.all([get(), get('es')]);
const held = Object.keys(en).filter((k) => JSON.stringify(en[k]) === JSON.stringify(es[k]));
console.log('unchanged across languages:', held);

import os, requests

def get(lang=None):
    params = {"lang": lang} if lang else {}
    r = requests.get(
        "https://roxyapi.com/api/v2/tarot/cards/tower",
        headers={"X-API-Key": os.environ["ROXYAPI_KEY"]},
        params=params,
    )
    return r.json()

en, es = get(), get("es")
print("unchanged across languages:", [k for k in en if en[k] == es.get(k)])

How to tell a real language from a silent English fallback

Ask for a language the vendor does not support and read the status code. A provider serving fixed localized text knows exactly which languages exist and can reject the rest. A provider that silently returns English for any unrecognized code has made the claim untestable, because every language you try appears to work.

curl -s "https://roxyapi.com/api/v2/tarot/cards/tower?lang=ar" -H "X-API-Key: YOUR_KEY"

{
  "error": "lang: Invalid option: expected one of \"en\"|\"tr\"|\"de\"|\"es\"|\"hi\"|\"pt\"|\"fr\"|\"ru\"",
  "code": "validation_error"
}

Then run the same supported request three times and hash each response. Fixed localized text returns byte-identical bodies, which is what makes it cacheable, diffable, and safe to show two users who compare notes. If the wording drifts between calls, you are looking at generation, and you should price the review problem in before you ship it to readers.

Translation or localization: what the card is called in French

Translation converts words. Localization returns what a practitioner in that language actually says, which is frequently not the same string. The gap between the two is invisible in a feature grid and obvious to the first native speaker who opens your app.

Card sixteen of the major arcana is The Tower. Ask for it in French:

curl -s "https://roxyapi.com/api/v2/tarot/cards/tower?lang=fr" \
  -H "X-API-Key: YOUR_KEY" | jq '.name'

The response is "La Maison Dieu", not "La Tour". A machine translator returns the second one, because it is a correct rendering of the English word. A French reader expects the first, because in the Tarot de Marseille tradition that card has carried the name Maison Dieu since the sixteenth century. The Spanish response is "La Torre", which is right for Spanish practice, and the Hindi is "मीनार".

This is the check that separates a language grid from a localized product, and it costs one call. Pick a term in your domain that has a traditional name in the target culture rather than a literal one, request it, and see which one comes back. Names of nakshatras, hexagrams, and Human Design gates all work the same way. A vendor that returns the literal translation has translated the interface and not the tradition.

Why the input script changes a numerology answer

Output language is not the only axis. Anything computed from a name is computed from its letters, so the script a user types in changes the answer. This is not a bug in any API, it is arithmetic, and it is the part of localization that a language count never touches.

The same name, written two ways:

curl -s https://roxyapi.com/api/v2/numerology/expression \
  -H "X-API-Key: YOUR_KEY" -H "Content-Type: application/json" \
  -d '{"fullName":"محمد"}' | jq '{number, calculation}'

The defensible answer is not to pick a winner but to decide once, store the choice with the user, and never migrate silently. The check to run against a vendor is whether the response shows its work. Every numerology response here returns a calculation string, M=4, H=8, M=4, D=4 → 4+8+4+4 = 20 → 2, so you can see which letters were counted and confirm the spelling that produced the number. An API that returns only the integer gives you nothing to audit when a user says the number is wrong. The same class of disagreement, from master number rules and Unicode normalization rather than script conversion, is covered in why two numerology APIs return different Life Path numbers.

FAQ

How many languages does the RoxyAPI astrology API support?

Eight: English, Turkish, German, Spanish, Hindi, Portuguese, French and Russian. Every one is fixed localized text written and reviewed rather than generated per request, every one is included on all plans with no per-language pricing, and 156 of the 182 live operations accept the lang parameter. You can confirm the current figure yourself from the public OpenAPI document without an account.

Is a higher language count better for an astrology API?

Only if the languages are the ones your users read and the endpoints you actually call are covered. Published counts are frequently tiered, with the full list on the daily horoscope feed and a shorter one on natal and Vedic endpoints, so compare coverage rather than headline numbers. A larger count also usually means the text is generated per request, which is what makes an unlimited count possible, and that comes with wording that can change between identical calls. A smaller count of reviewed text is the better buy when a practitioner or a paying reader will hold you to what the reading said.

How do I ask for a translated response from RoxyAPI?

Add ?lang= with an ISO 639-1 code to any supported endpoint, for example ?lang=hi. There is no separate account setting, no per-language key, and no different base URL. An unsupported code returns a 400 that names all eight supported languages rather than silently falling back to English.

Which fields stay in English when I request another language?

Identifiers and enum values, because your code depends on them. A sign element stays fire and a tarot card id stays tower in every language. Where that vocabulary is also displayed to a user, a localized sibling is returned beside it, such as elementLocalized set to Fuego, so the interface can render Spanish while your lookup tables stay stable.

Does an astrology API handle names written in Arabic, Hindi or Cyrillic?

RoxyAPI converts non-Latin names to Latin letters before any name-based calculation, and returns the letter-by-letter breakdown so you can see exactly which characters were counted. Be aware that a name in Arabic script and the same name transliterated can produce different numbers, because scripts that omit short vowels carry fewer letters. Pick one convention per user and keep it.

Conclusion

A language count is the least informative number on a vendor comparison page, and it is the easiest one to replace with a measurement. Count the translated operations from the published spec, diff one resource across two languages, send a language code that should fail, request a term with a traditional name, and feed a name in its native script. Five calls, no account for the first one, and the grid stops being an argument.

Start with the Astrology API and the API reference, or read the verification methodology behind the numbers.