IBM Language Translator

IBM Watson Language Translator was a REST API service for translating text between 35+ languages, detecting input language automatically, and creating custom domain-specific translation models using TMX, XLIFF, or CSV training data. The service supported neural machine translation (NMT) and was available through IBM Cloud. IBM deprecated the service in June 2023 and fully withdrew it in December 2024.

IBM Language Translator publishes 4 APIs on the APIs.io network, including Documents API, Languages API, Models API, and 1 more. Tagged areas include Translation, Natural Language Processing, Machine Translation, IBM Watson, and Artificial Intelligence.

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

IBM Language Translator’s developer surface includes authentication, documentation, engineering blog, pricing, and 17 more developer resources.

🌐 Visit website 📡 Source on GitHub

46.2/100 developing ▬ flat Agent 22/100 agent aware open core · Apache-2.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessPaidSelf serve

1 APIs

Translation Natural Language Processing Machine TranslationIBM WatsonArtificial Intelligence Text Analysis Deprecated

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 46.2/100 · developing

Contract Quality 12.2 / 20

Developer Ergonomics 3.8 / 16

Access Clarity 6.3 / 16

Operational Transparency 7.1 / 10

Contract Governance 0.9 / 10

Discoverability 5.5 / 8

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · 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 7 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/ibm-translate: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

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

IBM Language Translator Documents API

Operations for translating documents

IBM Language Translator Languages API

Operations for listing supported and identifiable languages

IBM Language Translator Models API

Operations for managing translation models

IBM Language Translator Translation API

Operations for translating text

Open Collections 5

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

IBM Watson Language Translator V3 Documents API

OPEN COLLECTION

IBM Watson Language Translator V3 Documents Languages API

OPEN COLLECTION

IBM Watson Language Translator V3 Documents Models API

OPEN COLLECTION

IBM Watson Language Translator V3 Documents Translation API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Ibm Translate Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Ibm Translate Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Ibm Translate Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

context Context

8 classes · 35 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

IBM Language Translator API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 4

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

DocumentStatus

12 properties

JSON SCHEMA

TranslationModel

10 properties

JSON SCHEMA

TranslateRequest

4 properties

JSON SCHEMA

TranslationResult

5 properties

JSON SCHEMA

Examples 3

Example request and response payloads for these APIs.

Identify Language

4 fields

EXAMPLE

List Models

4 fields

EXAMPLE

Translate Text

4 fields

EXAMPLE

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Ibm Translate Authentication

http · 1 scheme

SECURITY

Ibm Translate Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Ibm Translate Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Ibm Translate Agentic Access

13 operations · 6 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrg

GitHubOrg

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

IssueTracker

Releases

StatusPage

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

License

Pricing

Plans

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 2

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: ibm-translate
url: https://raw.githubusercontent.com/api-evangelist/ibm-translate/refs/heads/main/apis.yml
name: IBM Language Translator
kind: company
description: IBM Watson Language Translator was a REST API service for translating text between 35+ languages, detecting input
  language automatically, and creating custom domain-specific translation models using TMX, XLIFF, or CSV training data. The
  service supported neural machine translation (NMT) and was available through IBM Cloud. IBM deprecated the service in June
  2023 and fully withdrew it in December 2024.
deliveryModel:
  model: open-core
  license: Apache-2.0
  open_source: true
  commercial: true
  callable_host: false
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · 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/ibm-translate.png
tags:
- Translation
- Natural Language Processing
- Machine Translation
- IBM Watson
- Artificial Intelligence
- Text Analysis
- Deprecated
tags_raw:
- Translation
- Natural Language Processing
- Machine Translation
- IBM Watson
- AI
- Text Analysis
- Deprecated
created: '2026-06-13'
modified: '2026-08-21'
specificationVersion: '0.23'
apis:
- aid: ibm-translate:ibm-translate-documents-api
  name: IBM Language Translator Documents API
  description: Operations for translating documents
  humanURL: https://cloud.ibm.com/apidocs/language-translator
  baseURL: https://api.us-south.language-translator.watson.cloud.ibm.com
  tags:
  - Documents
  properties:
  - type: OpenAPI
    url: openapi/ibm-translate-documents-api-openapi.yml
  - type: Documentation
    url: https://cloud.ibm.com/apidocs/language-translator
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/python-sdk
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/node-sdk
  - type: Pricing
    url: https://www.ibm.com/cloud/watson-language-translator/pricing
- aid: ibm-translate:ibm-translate-languages-api
  name: IBM Language Translator Languages API
  description: Operations for listing supported and identifiable languages
  humanURL: https://cloud.ibm.com/apidocs/language-translator
  baseURL: https://api.us-south.language-translator.watson.cloud.ibm.com
  tags:
  - Language
  tags_raw:
  - Languages
  properties:
  - type: OpenAPI
    url: openapi/ibm-translate-languages-api-openapi.yml
  - type: Documentation
    url: https://cloud.ibm.com/apidocs/language-translator
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/python-sdk
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/node-sdk
  - type: Pricing
    url: https://www.ibm.com/cloud/watson-language-translator/pricing
- aid: ibm-translate:ibm-translate-models-api
  name: IBM Language Translator Models API
  description: Operations for managing translation models
  humanURL: https://cloud.ibm.com/apidocs/language-translator
  baseURL: https://api.us-south.language-translator.watson.cloud.ibm.com
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/ibm-translate-models-api-openapi.yml
  - type: Documentation
    url: https://cloud.ibm.com/apidocs/language-translator
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/python-sdk
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/node-sdk
  - type: Pricing
    url: https://www.ibm.com/cloud/watson-language-translator/pricing
- aid: ibm-translate:ibm-translate-translation-api
  name: IBM Language Translator Translation API
  description: Operations for translating text
  humanURL: https://cloud.ibm.com/apidocs/language-translator
  baseURL: https://api.us-south.language-translator.watson.cloud.ibm.com
  tags:
  - Translation
  properties:
  - type: OpenAPI
    url: openapi/ibm-translate-translation-api-openapi.yml
  - type: Documentation
    url: https://cloud.ibm.com/apidocs/language-translator
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/python-sdk
  - type: GitHubRepository
    url: https://github.com/watson-developer-cloud/node-sdk
  - type: Pricing
    url: https://www.ibm.com/cloud/watson-language-translator/pricing
common:
- type: ParentCompany
  url: https://apis.io/providers/ibm/
  name: Ibm
  x-relationship: product
  x-generated-by: ibm-family:2026-08-21
- type: IssueTracker
  url: https://github.com/watson-developer-cloud/python-sdk/issues
- type: Releases
  url: https://github.com/watson-developer-cloud/python-sdk/releases
- type: CodeOfConduct
  url: https://github.com/watson-developer-cloud/python-sdk/blob/master/.github/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/watson-developer-cloud/python-sdk/blob/master/CONTRIBUTING.md
- type: License
  name: Apache-2.0
  url: https://github.com/watson-developer-cloud/python-sdk/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/ibm-translate-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/ibm-translate-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/ibm-translate-domain-security.yml
- type: Authentication
  url: authentication/ibm-translate-authentication.yml
- type: Website
  url: https://www.ibm.com/cloud/watson-language-translator
- type: Documentation
  url: https://cloud.ibm.com/apidocs/language-translator
- type: GitHubOrg
  url: https://github.com/watson-developer-cloud
- type: LinkedIn
  url: https://www.linkedin.com/company/ibm
- type: Blog
  url: https://www.ibm.com/blog/category/watson/
- type: Pricing
  url: https://www.ibm.com/cloud/watson-language-translator/pricing
- type: StatusPage
  url: https://cloud.ibm.com/status?component=language-translator&selected=status
- type: X
  url: https://x.com/IBMcloud
- type: Plans
  url: plans/ibm-translate-plans-pricing.yml
- type: RateLimits
  url: rate-limits/ibm-translate-rate-limits.yml
- type: FinOps
  url: finops/ibm-translate-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: ibm
x-relationship: product

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