Tolgee

Tolgee is an open-source localization platform for translating web and mobile applications. It provides in-context translation, AI-assisted machine translation, framework SDKs, a CLI, and a REST API. Teams can self-host the open-source platform for free via Docker or use Tolgee Cloud (app.tolgee.io). The REST API exposes projects, localization keys, translations, languages, import/export, and screenshots, authenticated with a project API key sent in the X-API-Key header.

Tolgee publishes 7 APIs on the APIs.io network, including API Keys API, Import/Export API, Keys API, and 4 more. Tagged areas include Localization, i18n, Translation, Open-Source, and Developer Tools.

Tolgee’s developer surface includes authentication, documentation, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.6/100 developing ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Localization i18n Translation Open-Source Developer Tools

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 40.6/100 · developing

Contract Quality 12.3 / 23

Developer Ergonomics 5.6 / 18

Access Clarity 7.1 / 18

Operational Transparency 4.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 20/100 · 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 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

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.

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/tolgee: 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 7

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

Tolgee API Keys API

Inspect the current API key.

Tolgee Import/Export API

Export localization files and import translation data.

Tolgee Keys API

Manage translation keys within a project.

Tolgee Languages API

Manage project languages (locales).

Tolgee Projects API

Create and manage localization projects.

Tolgee Screenshots API

Attach visual context screenshots to keys.

Tolgee Translations API

Read and write translations and their states.

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

Tolgee API Keys API

OPEN COLLECTION

Tolgee API Keys Import/Export API

OPEN COLLECTION

Tolgee API Keys API

OPEN COLLECTION

Tolgee API Keys Languages API

OPEN COLLECTION

Tolgee API Keys Projects API

OPEN COLLECTION

Tolgee API Keys Screenshots API

OPEN COLLECTION

Tolgee API Keys Translations API

OPEN COLLECTION

Tolgee API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Tolgee Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Tolgee Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Tolgee Finops

FINOPS

Security Posture 2

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

Tolgee Authentication

apiKey · 1 scheme

SECURITY

Tolgee Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Tolgee Agentic Access

25 operations · 16 acting

AGENTIC

Resources

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

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: tolgee
url: https://raw.githubusercontent.com/api-evangelist/tolgee/refs/heads/main/apis.yml
name: Tolgee
kind: company
description: Tolgee is an open-source localization platform for translating web and mobile applications. It provides in-context
  translation, AI-assisted machine translation, framework SDKs, a CLI, and a REST API. Teams can self-host the open-source
  platform for free via Docker or use Tolgee Cloud (app.tolgee.io). The REST API exposes projects, localization keys, translations,
  languages, import/export, and screenshots, authenticated with a project API key sent in the X-API-Key header.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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/tolgee.png
tags:
- Localization
- i18n
- Translation
- Open-Source
- Developer Tools
tags_raw:
- Localization
- i18n
- Translation
- Open Source
- Developer Tools
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.23'
apis:
- aid: tolgee:tolgee-api-keys-api
  name: Tolgee API Keys API
  description: Inspect the current API key.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - APIKeys
  tags_raw:
  - API Keys
  properties:
  - type: OpenAPI
    url: openapi/tolgee-api-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-import-export-api
  name: Tolgee Import/Export API
  description: Export localization files and import translation data.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Import Export
  tags_raw:
  - Import/Export
  properties:
  - type: OpenAPI
    url: openapi/tolgee-import-export-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-keys-api
  name: Tolgee Keys API
  description: Manage translation keys within a project.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/tolgee-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-languages-api
  name: Tolgee Languages API
  description: Manage project languages (locales).
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Language
  tags_raw:
  - Languages
  properties:
  - type: OpenAPI
    url: openapi/tolgee-languages-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-projects-api
  name: Tolgee Projects API
  description: Create and manage localization projects.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/tolgee-projects-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-screenshots-api
  name: Tolgee Screenshots API
  description: Attach visual context screenshots to keys.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Screenshots
  properties:
  - type: OpenAPI
    url: openapi/tolgee-screenshots-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
- aid: tolgee:tolgee-translations-api
  name: Tolgee Translations API
  description: Read and write translations and their states.
  humanURL: https://docs.tolgee.io/api
  baseURL: https://app.tolgee.io
  tags:
  - Translations
  properties:
  - type: OpenAPI
    url: openapi/tolgee-translations-api-openapi.yml
  - type: Documentation
    url: https://docs.tolgee.io/api
  - type: APIReference
    url: https://docs.tolgee.io/api
  - type: Documentation
    url: https://docs.tolgee.io/api/get-translations
  - type: Documentation
    url: https://docs.tolgee.io/platform/projects_and_organizations/export
common:
- type: AgenticAccess
  url: agentic-access/tolgee-agentic-access.yml
- type: DomainSecurity
  url: security/tolgee-domain-security.yml
- type: Authentication
  url: authentication/tolgee-authentication.yml
- type: GitHubOrganization
  url: https://github.com/tolgee
- type: LinkedIn
  url: https://www.linkedin.com/company/tolgee
- type: Website
  url: https://tolgee.io
- type: Documentation
  url: https://docs.tolgee.io
- type: Plans
  url: plans/tolgee-plans-pricing.yml
- type: RateLimits
  url: rate-limits/tolgee-rate-limits.yml
- type: FinOps
  url: finops/tolgee-finops.yml
- type: Blog
  url: https://tolgee.io/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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