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 API contracts indexed 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.

The Tolgee catalog on APIs.io includes 1 Spectral governance ruleset.

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

🌐 Visit website 📡 Profile data on GitHub

29.8/100 thin ▬ flat Agent 20/100 agent aware Front door AI 3/6 light Heartbeat 81/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Localization i18n Translation Open Source Developer Tools Internationalization

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 29.8/100 · thin

Contract Quality 9.3 / 19

Developer Ergonomics 4.7 / 15

Access Clarity 1.0 / 15

Operational Transparency 1.2 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 0.9 / 15

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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct 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 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →
Contract Quality scores 49.5 — up to +12.6 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/tolgee/apis.yml: open an issue on github.com/api-evangelist/tolgee to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Localization and Translation Management	builds-on	17.2 (thin)	1	-
Browser Extension Stores (company-published Firefox add-ons; Chrome Web Store unreadable)	builds-on	17.2 (thin)	1	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 8

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

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 8

Tolgee API pricing

Not yet checked against Tolgee's own pricing page. Compiled by API Evangelist on 2026-06-21 from tolgee.io/pricing; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Self-Hosted (Open Source) free	—
Cloud Free free	Free
Cloud Team paid	—
Cloud Business paid	—
Cloud Advanced paid	—
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Translation Keys (quota): per plan (e.g. 500 Free, 2000 Team, 5000 Business, 20000 Advanced) keys
Seats (quota): per plan (e.g. 3 Free, 4 Team, 8 Business, 20 Advanced; up to 10 self-hosted free) seats
MT Credits (quota): per plan (e.g. 10000 included on Free) credits

Compiled by API Evangelist, not yet checked against Tolgee's documentation. All 4 limits →

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

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Tolgee API Rules

64 rules · 61 error-severity 2 warn-severity 1 info-severity

SPECTRAL

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 (API Evangelist recommendations) 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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tolgee.png
x-docs-platform: docusaurus
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-17
x-docs-hosting: netlify
tags:
- Localization
- i18n
- Translation
- Open Source
- Developer Tools
- Internationalization
tags_raw:
- Localization
- i18n
- Translation
- Open Source
- Developer Tools
- Internationalization
- Open-Source
created: '2026-06-21'
modified: '2026-09-16'
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:
  - Translation
  tags_raw:
  - 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

Tolgee API — frequently asked questions

Does Tolgee have an API?

Yes. APIs.io lists 7 APIs from Tolgee, including Tolgee API Keys API, Tolgee Import/Export API and Tolgee Keys API, and 4 more.

Is there an OpenAPI specification for the Tolgee API?

Yes. APIs.io indexes 7 OpenAPI specifications for Tolgee, each linked for download from this page.

How do I authenticate with the Tolgee API?

Tolgee uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Tolgee Authentication.

How much does the Tolgee API cost?

APIs.io lists 6 pricing plans for Tolgee, with each plan's price, limits and inclusions under Pricing on this page.

Is the Tolgee API ready for AI agents?

Tolgee has a Kin Score of 29.8 out of 100 (thin) and an Agent Readiness score of 19.6 (agent-aware), scored by API Evangelist on 2026-11-13.

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