ru-api-free 1.4.0

Free API for conjugating Russian verbs in all tenses (present, past, future)

ru-api-free

Free REST API for conjugating Russian verbs in all tenses (present, past, future). Translate words from any language to Russian — if it's a verb, you get full conjugation.

Live API: https://ru-api-free.onrender.com

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Quick Start (no installation)

Just use the hosted API directly:

curl "https://ru-api-free.onrender.com/translate?text=speak"

// Use on your website
const res = await fetch("https://ru-api-free.onrender.com/translate?text=speak");
const data = await res.json();
console.log(data.verb, data.tenses);

import requests

r = requests.get("https://ru-api-free.onrender.com/translate", params={"text": "speak"})
print(r.json()["tenses"]["present"]["я"])  # "говорю"

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API Endpoints

1. Translate + Conjugate

GET /translate?text={word}&source=auto&target=ru

Param	Default	Description
text	—	Word to translate (required)
source	auto	Source language code
target	ru	Target language code

Examples:

# English verb -> Russian + conjugation
curl "https://ru-api-free.onrender.com/translate?text=speak"

# German verb -> Russian + conjugation
curl "https://ru-api-free.onrender.com/translate?text=sprechen&source=de"

# French verb -> Russian + conjugation
curl "https://ru-api-free.onrender.com/translate?text=lire&source=fr"

# Noun -> just translation, no conjugation
curl "https://ru-api-free.onrender.com/translate?text=house"

# Russian -> English (translation only)
curl "https://ru-api-free.onrender.com/translate?text=читать&source=ru&target=en"

2. Direct Conjugation (Russian verb only)

GET /conjugate?verb={verb}

curl "https://ru-api-free.onrender.com/conjugate?verb=читать"
curl "https://ru-api-free.onrender.com/conjugate?verb=говорить"

3. List all verbs

GET /verbs

4. Search verbs

GET /search?q={query}

curl "https://ru-api-free.onrender.com/search?q=чит"

5. Pluralise (nouns)

Translate any word to Russian and get its plural form. Handles 150+ irregular plurals.

GET /pluralise?text={word}&source=auto

Param	Default	Description
text	—	Word to pluralise (required)
source	auto	Source language code

curl "https://ru-api-free.onrender.com/pluralise?text=house"
curl "https://ru-api-free.onrender.com/pluralise?text=Haus&source=de"
curl "https://ru-api-free.onrender.com/pluralise?text=дом"

const res = await fetch("https://ru-api-free.onrender.com/pluralise?text=book");
const data = await res.json();
console.log(data.singular, "→", data.plural);  // "книга → книги"

Response:

{
  "singular": "дом",
  "plural": "дома",
  "gender": "masculine",
  "original": "house",
  "translated": "дом"
}

6. Decline (noun cases)

Translate any word to Russian and get all 6 noun cases in singular and plural (nominative, genitive, dative, accusative, instrumental, prepositional).

GET /decline?text={word}&source=auto

Param	Default	Description
text	—	Word to decline (required)
source	auto	Source language code

curl "https://ru-api-free.onrender.com/decline?text=house"
curl "https://ru-api-free.onrender.com/decline?text=дом"

const res = await fetch("https://ru-api-free.onrender.com/decline?text=book");
const data = await res.json();
console.log(data.singular.genitive);  // "книги"

Response:

{
  "word": "дом",
  "gender": "masculine",
  "declension": "first",
  "singular": {
    "nominative": "дом",
    "genitive": "дома",
    "dative": "дому",
    "accusative": "дом",
    "instrumental": "домом",
    "prepositional": "доме"
  },
  "plural": {
    "nominative": "дома",
    "genitive": "домов",
    "dative": "домам",
    "accusative": "дома",
    "instrumental": "домами",
    "prepositional": "домах"
  }
}

7. Conjugation exceptions

GET /exceptions              # All exceptions
GET /exceptions/{verb}       # Exceptions for one verb

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Response Format

{
  "verb": "говорить",
  "aspect": "imperfective",
  "conjugation_type": 2,
  "reflexive": false,
  "tenses": {
    "present": {
      "я": "говорю",
      "ты": "говоришь",
      "он/она/оно": "говорит",
      "мы": "говорим",
      "вы": "говорите",
      "они": "говорят"
    },
    "past": {
      "мужской": "говорил",
      "женский": "говорила",
      "средний": "говорило",
      "множественное": "говорили"
    },
    "future": {
      "я": "буду говорить",
      "ты": "будешь говорить",
      "он/она/оно": "будет говорить",
      "мы": "будем говорить",
      "вы": "будете говорить",
      "они": "будут говорить"
    }
  }
}

Language codes

auto, en, ru, de, fr, es, it, pt, nl, pl, uk, be, bg, cs, sk, sr, hr, tr, ar, zh, ja, ko

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Self-Hosting

pip install ru-api-free
ru-api-free
# or: uvicorn ru_api_free.main:app --host 0.0.0.0 --port 8000

CORS is enabled for all origins — use it directly from any website.

Python Library (no server needed)

from ru_api_free import conjugate, translate, pluralise, decline

result, status = conjugate("читать")
print(result["tenses"]["present"]["я"])  # "читаю"

russian = translate("speak", source="auto", target="ru")
print(russian)  # "говорить"

info = pluralise("дом")
print(info["singular"], "→", info["plural"])  # "дом → дома"

cases = decline("дом")
print(cases["singular"]["genitive"])  # "дома"

License

MIT