Papago

Naver Papago translation REST API for translating text between Korean, English, Japanese, Chinese, and other Asian and European languages using Neural Machine Translation (NMT) algorithms. The service offers text translation, document translation, website translation, language detection, and glossary management, supporting 29 language pairs with high accuracy and no data retention for user privacy.

Papago publishes 1 API on the APIs.io network: Papago API. Tagged areas include Translation, Natural Language Processing, Machine Translation, Neural Machine Translation, and Korean.

The Papago catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Papago’s developer surface includes authentication, documentation, engineering blog, pricing, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.8/100 developing ▼ -6.3 Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serve⚡ Free to try

5 APIs

TranslationNatural Language ProcessingMachine TranslationNeural Machine TranslationKoreanAsian LanguagesLocalizationLanguage Detection

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 42.8/100 · developing

Contract Quality 11.3 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 2.7 / 13

Governance 7.0 / 12

Discoverability 7.4 / 10

Agent readiness — 31/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/papago: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 5

Individual APIs this provider publishes, each with its own machine-readable definition.

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

Examples 4

Example request and response payloads for these APIs.

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: papago
name: Papago
description: Naver Papago translation REST API for translating text between Korean, English, Japanese, Chinese, and other
  Asian and European languages using Neural Machine Translation (NMT) algorithms. The service offers text translation, document
  translation, website translation, language detection, and glossary management, supporting 29 language pairs with high accuracy
  and no data retention for user privacy.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/papago.png
url: https://raw.githubusercontent.com/api-evangelist/papago/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
- Translation
- Natural Language Processing
- Machine Translation
- Neural Machine Translation
- Korean
- Asian Languages
- Localization
- Language Detection
apis:
- aid: papago:papago-language-detection
  name: Papago Language Detection API
  description: Automatically detects the language of input text, supporting 15 languages including Korean, English, Japanese,
    Chinese, Vietnamese, Thai, Indonesian, French, Spanish, Russian, German, Italian, Portuguese, and Hindi. Language detection
    is provided at no charge.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  baseURL: https://papago.apigw.ntruss.com/langs/v1
  tags:
  - Language Detection
  - Natural Language Processing
  properties:
  - type: Documentation
    url: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  contact:
  - FN: Naver Cloud Platform Support
    url: https://www.ncloud.com/support/question
- aid: papago:papago-document-translation
  name: Papago Document Translation API
  description: Translates documents while preserving their original layout, supporting MS Office formats (DOCX, PPTX, XLSX),
    PDF, and Korean Hangul (HWP v5.0+) files up to 100 MB and 300,000 characters per document across 15 language pairs.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  baseURL: https://papago.apigw.ntruss.com/doc-trans/v1
  tags:
  - Document Translation
  - File Translation
  properties:
  - type: Documentation
    url: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  contact:
  - FN: Naver Cloud Platform Support
    url: https://www.ncloud.com/support/question
- aid: papago:papago-website-translation
  name: Papago Website Translation API
  description: Detects and translates HTML documents and web elements using proprietary tag restoration technology for improved
    translation accuracy across websites and web applications, supporting 15 language pairs.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  baseURL: https://papago.apigw.ntruss.com/web-trans/v1
  tags:
  - Website Translation
  - HTML Translation
  - Web Localization
  properties:
  - type: Documentation
    url: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  contact:
  - FN: Naver Cloud Platform Support
    url: https://www.ncloud.com/support/question
- aid: papago:papago-glossary
  name: Papago Glossary API
  description: Manages custom terminology dictionaries for contextually appropriate translations. Allows registration and
    retrieval of glossaries with up to 20 terms per request, applied across all Papago translation services for consistent
    domain-specific terminology.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  baseURL: https://papago.apigw.ntruss.com/glossary
  tags:
  - Glossary
  - Terminology
  - Custom Dictionary
  properties:
  - type: Documentation
    url: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  contact:
  - FN: Naver Cloud Platform Support
    url: https://www.ncloud.com/support/question
- aid: papago:papago-papago-api
  name: Papago Papago API
  description: Naver Machine Learning Translation APIs
  humanURL: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
  baseURL: https://papago.apigw.ntruss.com/nmt/v1
  tags:
  - Papago
  properties:
  - type: OpenAPI
    url: openapi/papago-papago-api-openapi.yml
  - type: Documentation
    url: https://api.ncloud-docs.com/docs/en/ai-naver-papagonmt
common:
- type: AgenticAccess
  url: agentic-access/papago-agentic-access.yml
- type: DomainSecurity
  url: security/papago-domain-security.yml
- type: Authentication
  url: authentication/papago-authentication.yml
- type: Website
  url: https://www.ncloud.com/v2/product/aiService/papagoTranslation
- type: Documentation
  url: https://guide.ncloud-docs.com/docs/en/papagotranslation-overview
- type: GitHubOrg
  url: https://github.com/NaverCloudPlatform
- type: LinkedIn
  url: https://www.linkedin.com/company/navercloud
- type: Blog
  url: https://medium.com/naver-cloud
- type: Pricing
  url: https://www.ncloud.com/charge/calc
- type: StatusPage
  url: https://www.ncloud.com/v2/serviceStatus
- type: X
  url: https://x.com/NaverCloudPlatf
- type: Plans
  url: https://raw.githubusercontent.com/api-evangelist/papago/refs/heads/main/plans/plans.yml
- type: RateLimits
  url: https://raw.githubusercontent.com/api-evangelist/papago/refs/heads/main/rate-limits/rate-limits.yml
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/papago/refs/heads/main/finops/finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com