DeepL

DeepL is an AI-powered translation service that delivers high-quality machine translation between dozens of languages, with support for context-aware translation, document translation, glossaries, and rephrasing/improvement via DeepL Write. The DeepL API is offered in Pro and Free tiers and exposes endpoints for text translation, document translation, glossaries, language metadata, usage, and write/rephrase.

DeepL publishes 7 APIs on the APIs.io network, including Voice API, Documents API, Glossaries API, and 4 more. Tagged areas include Artificial Intelligence, Deep Learning, Glossary, Localization, and Machine-Learning.

The DeepL catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 3 Spectral governance rulesets.

DeepL’s developer surface includes authentication, developer portal, documentation, pricing, engineering blog, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

50.1/100 developing ▬ flat Agent 30/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreemiumSelf serve⚡ Free to try

7 APIs

Artificial IntelligenceDeep LearningGlossaryLocalizationMachine-LearningMachine TranslationTranslation

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 50.1/100 · developing

Contract Quality 17.7 / 25

Developer Ergonomics 9.0 / 20

Access Clarity 11.1 / 20

Operational Transparency 1.0 / 13

Contract Governance 3.2 / 12

Discoverability 8.2 / 10

Agent readiness — 30/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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 6 / 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/deepl: 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 7

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

Rate Limits 1

Documented rate limits and quota policies.

Deepl Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 2

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

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Vocabulary

Vocabulary

Build 3

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

SDKs

SDKs

SDKs

SDKs

Access & Security 5

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Authentication

Authentication

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: deepl
name: DeepL
url: https://raw.githubusercontent.com/api-evangelist/deepl/refs/heads/main/apis.yml
kind: company
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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/deepl.png
tags:
- Artificial Intelligence
- Deep Learning
- Glossary
- Localization
- Machine-Learning
- Machine Translation
- Translation
tags_raw:
- Artificial Intelligence
- Deep Learning
- Glossaries
- Localization
- Machine Learning
- Machine Translation
- Translation
created: '2024-11-07'
modified: '2026-05-30'
specificationVersion: '0.23'
description: DeepL is an AI-powered translation service that delivers high-quality machine translation between dozens of languages,
  with support for context-aware translation, document translation, glossaries, and rephrasing/improvement via DeepL Write.
  The DeepL API is offered in Pro and Free tiers and exposes endpoints for text translation, document translation, glossaries,
  language metadata, usage, and write/rephrase.
apis:
- aid: deepl:deepl-voice-api
  name: DeepL Voice API
  description: The DeepL Voice API provides real-time speech transcription and translation. A POST to /v3/voice/realtime issues
    an ephemeral token and WebSocket streaming URL; clients then open a WSS channel to stream source audio chunks and receive
    incremental source-language transcriptions, translated transcriptions, and (closed beta) synthesized translated audio.
    There is no documented webhook callback URL on the REST APIs; document translation remains polling-based.
  humanURL: https://developers.deepl.com/api-reference/voice
  baseURL: https://api.deepl.com/v3
  tags:
  - Real-Time
  - Speech-to-Text
  - Streaming
  - Transcription
  - Translation
  - Voice
  - WebSocket
  properties:
  - type: Documentation
    url: https://developers.deepl.com/api-reference/voice
  - type: Reference
    url: https://developers.deepl.com/api-reference/voice/websocket-streaming
  - type: OpenAPI
    url: openapi/deepl-voice-api-openapi.yml
  - type: AsyncAPI
    url: asyncapi/deepl-voice-api-asyncapi.yml
  - type: AsyncAPI
    url: https://developers.deepl.com/api-reference/voice.asyncapi.yaml
- aid: deepl:deepl-documents-api
  name: DeepL Documents API
  description: The Documents API from DeepL — 3 operation(s) for documents.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/deepl-documents-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
- aid: deepl:deepl-glossaries-api
  name: DeepL Glossaries API
  description: The Glossaries API from DeepL — 4 operation(s) for glossaries.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags:
  - Glossary
  tags_raw:
  - Glossaries
  properties:
  - type: OpenAPI
    url: openapi/deepl-glossaries-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
- aid: deepl:deepl-languages-api
  name: DeepL Languages API
  description: The Languages API from DeepL — 1 operation(s) for languages.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags:
  - Language
  tags_raw:
  - Languages
  properties:
  - type: OpenAPI
    url: openapi/deepl-languages-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
- aid: deepl:deepl-translate-api
  name: DeepL Translate API
  description: The Translate API from DeepL — 1 operation(s) for translate.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags:
  - Translate
  properties:
  - type: OpenAPI
    url: openapi/deepl-translate-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
- aid: deepl:deepl-usage-api
  name: DeepL Usage API
  description: The Usage API from DeepL — 1 operation(s) for usage.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/deepl-usage-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
- aid: deepl:deepl-write-api
  name: DeepL Write API
  description: The Write API from DeepL — 1 operation(s) for write.
  humanURL: https://developers.deepl.com/
  baseURL: https://api.deepl.com/v2
  tags: []
  tags_raw:
  - Write
  properties:
  - type: OpenAPI
    url: openapi/deepl-write-api-openapi.yml
  - type: Documentation
    url: https://developers.deepl.com/docs
  - type: Reference
    url: https://developers.deepl.com/docs/api-reference
  - type: JSONSchema
    url: json-schema/deepl-translation.json
  - type: JSONSchema
    url: json-schema/deepl-glossary.json
  - type: Rules
    url: rules/deepl-translation-api-rules.yml
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/deepl/overview
- type: AgenticAccess
  url: agentic-access/deepl-agentic-access.yml
- type: TrustCenter
  url: security/deepl-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/deepl-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/deepl-domain-security.yml
- type: Authentication
  url: authentication/deepl-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/deepl
- type: Website
  url: https://www.deepl.com/
- type: Portal
  url: https://developers.deepl.com/
- type: Documentation
  url: https://developers.deepl.com/docs
- type: Authentication
  url: https://developers.deepl.com/docs/getting-started/auth
- type: Pricing
  url: https://www.deepl.com/pro
- type: SDKs
  url: https://github.com/DeepLcom/deepl-python
- type: SDKs
  url: https://github.com/DeepLcom/deepl-node
- type: TermsOfService
  url: https://www.deepl.com/pro-license
- type: PrivacyPolicy
  url: https://www.deepl.com/privacy
- type: JSONLD
  url: json-ld/deepl-context.jsonld
- type: Vocabulary
  url: vocabulary/deepl-vocabulary.yml
- type: Integrations
  url: https://www.deepl.com/en/integrations
- type: LlmsText
  url: https://developers.deepl.com/llms.txt
- url: https://www.deepl.com/en/blog/rss.xml
  type: Blog
integrations:
- name: DeepL
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

DeepL

APIs 7

Postman Collections 7

Open Collections 9

Pricing Plans 1