Lingo.dev website screenshot

Lingo.dev

Lingo.dev (formerly Replexica) is an AI localization platform for software teams. Its hosted Localization Engine exposes a Bearer/X-API-Key REST API and SDK for translating text, objects, chat messages, HTML, and string arrays while preserving structure, brand voice, and glossaries. Open-source tooling - the CLI and the build-time React Compiler - sits on top of the same engine.

Lingo.dev publishes 3 APIs on the APIs.io network: Account API, Asynchronous API, and Synchronous API. Tagged areas include AI, Localization, Translation, i18n, and Developer Tools.

Lingo.dev’s developer surface includes authentication, documentation, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.3/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
5 APIs
AILocalizationTranslationi18nDeveloper Tools

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 40.3/100 · thin
Contract Quality 15.9 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 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/lingo-dev: 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.

Lingo.dev CLI

Open-source command-line tool that localizes JSON, YAML, Markdown, CSV, and PO files in one command, tracking a lockfile so only new or changed content is processed. Connects to...

Lingo.dev Compiler

Open-source build-time React localization. The Compiler detects translatable strings and generates localized variants at build time without i18n wrappers, translation keys, or t...

Lingo.dev Account API

The Account API from Lingo.dev — 1 operation(s) for account.

Lingo.dev Asynchronous API

The Asynchronous API from Lingo.dev — 2 operation(s) for asynchronous.

Lingo.dev Synchronous API

The Synchronous API from Lingo.dev — 3 operation(s) for synchronous.

Open Collections 1

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

Lingo.dev Engine API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Lingo Dev Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Lingo Dev Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Lingo Dev Finops

FINOPS

Security Posture 3

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

Lingo Dev Authentication

apiKey · 1 scheme

SECURITY

Lingo Dev Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Lingo Dev Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Lingo Dev Agentic Access

7 operations · 4 acting

7 operations · 4 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 3

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 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
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: lingo-dev
url: https://raw.githubusercontent.com/api-evangelist/lingo-dev/refs/heads/main/apis.yml
name: Lingo.dev
kind: company
description: Lingo.dev (formerly Replexica) is an AI localization platform for software teams. Its hosted Localization Engine
  exposes a Bearer/X-API-Key REST API and SDK for translating text, objects, chat messages, HTML, and string arrays while
  preserving structure, brand voice, and glossaries. Open-source tooling - the CLI and the build-time React Compiler - sits
  on top of the same engine.
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/lingo-dev.png
tags:
- AI
- Localization
- Translation
- i18n
- Developer Tools
created: '2026-06-21'
modified: '2026-06-21'
specificationVersion: '0.19'
apis:
- aid: lingo-dev:cli
  name: Lingo.dev CLI
  tags:
  - CLI
  - Open Source
  - i18n
  - CI/CD
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://lingo.dev/en/cli
  baseURL: https://api.lingo.dev
  properties:
  - url: https://lingo.dev/en/cli/quick-start
    type: Documentation
  - url: https://github.com/lingodotdev/lingo.dev
    type: SourceCode
  description: Open-source command-line tool that localizes JSON, YAML, Markdown, CSV, and PO files in one command, tracking
    a lockfile so only new or changed content is processed. Connects to the Lingo.dev engine by default and can bring your
    own LLM (OpenAI, Anthropic, Google, Mistral, OpenRouter, Ollama).
- aid: lingo-dev:compiler
  name: Lingo.dev Compiler
  tags:
  - Compiler
  - React
  - Open Source
  - Build Time
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://lingo.dev/en/compiler
  baseURL: https://api.lingo.dev
  properties:
  - url: https://lingo.dev/en/compiler
    type: Documentation
  - url: https://github.com/lingodotdev/lingo.dev
    type: SourceCode
  description: Open-source build-time React localization. The Compiler detects translatable strings and generates localized
    variants at build time without i18n wrappers, translation keys, or t() function calls, using the same localization engine
    behind the scenes.
- aid: lingo-dev:lingo-dev-account-api
  name: Lingo.dev Account API
  description: The Account API from Lingo.dev — 1 operation(s) for account.
  humanURL: https://lingo.dev/en/docs/api
  baseURL: https://api.lingo.dev
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/lingo-dev-account-api-openapi.yml
  - type: Documentation
    url: https://lingo.dev/en/docs/api
  - type: APIReference
    url: https://lingo.dev/en/docs/api/localization
  - type: PostmanCollection
    url: collections/lingo-dev.postman_collection.json
  - type: OpenCollection
    url: collections/lingo-dev.opencollection.json
  - type: Documentation
    url: https://lingo.dev/en/sdk/javascript
  - type: SDKs
    url: https://www.npmjs.com/package/lingo.dev
- aid: lingo-dev:lingo-dev-asynchronous-api
  name: Lingo.dev Asynchronous API
  description: The Asynchronous API from Lingo.dev — 2 operation(s) for asynchronous.
  humanURL: https://lingo.dev/en/docs/api
  baseURL: https://api.lingo.dev
  tags:
  - Asynchronous
  properties:
  - type: OpenAPI
    url: openapi/lingo-dev-asynchronous-api-openapi.yml
  - type: Documentation
    url: https://lingo.dev/en/docs/api
  - type: APIReference
    url: https://lingo.dev/en/docs/api/localization
  - type: PostmanCollection
    url: collections/lingo-dev.postman_collection.json
  - type: OpenCollection
    url: collections/lingo-dev.opencollection.json
  - type: Documentation
    url: https://lingo.dev/en/sdk/javascript
  - type: SDKs
    url: https://www.npmjs.com/package/lingo.dev
- aid: lingo-dev:lingo-dev-synchronous-api
  name: Lingo.dev Synchronous API
  description: The Synchronous API from Lingo.dev — 3 operation(s) for synchronous.
  humanURL: https://lingo.dev/en/docs/api
  baseURL: https://api.lingo.dev
  tags:
  - Synchronous
  properties:
  - type: OpenAPI
    url: openapi/lingo-dev-synchronous-api-openapi.yml
  - type: Documentation
    url: https://lingo.dev/en/docs/api
  - type: APIReference
    url: https://lingo.dev/en/docs/api/localization
  - type: PostmanCollection
    url: collections/lingo-dev.postman_collection.json
  - type: OpenCollection
    url: collections/lingo-dev.opencollection.json
  - type: Documentation
    url: https://lingo.dev/en/sdk/javascript
  - type: SDKs
    url: https://www.npmjs.com/package/lingo.dev
common:
- type: AgenticAccess
  url: agentic-access/lingo-dev-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/lingo-dev-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/lingo-dev-domain-security.yml
- type: Authentication
  url: authentication/lingo-dev-authentication.yml
- type: GitHubOrganization
  url: https://github.com/lingodotdev
- type: LinkedIn
  url: https://www.linkedin.com/company/lingodotdev
- type: Website
  url: https://lingo.dev
- type: Documentation
  url: https://lingo.dev/en/docs
- type: Plans
  url: plans/lingo-dev-plans-pricing.yml
- type: RateLimits
  url: rate-limits/lingo-dev-rate-limits.yml
- type: FinOps
  url: finops/lingo-dev-finops.yml
- type: Blog
  url: https://lingo.dev/en/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com