SimpleLocalize

SimpleLocalize is a web-based translation management platform that helps small and growing teams save time on handling localization files and translation strings. It provides a REST API for managing translations, languages, projects, and customers, along with integrations for CI/CD pipelines, frameworks, and AI-powered tools.

SimpleLocalize publishes 10 API contracts indexed on the APIs.io network, including Customers API, Export API, Import API, and 7 more. Tagged areas include Localization, Translation, and Internationalization.

The SimpleLocalize catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

SimpleLocalize’s developer surface includes authentication, documentation, pricing, engineering blog, CLI, and 17 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.8/100 developing ▬ flat Agent 19/100 agent aware Front door AI 5/6 prominent Heartbeat 99/100 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 Translation Internationalization

Kin Score

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

Composite quality — 47.8/100 · developing

Contract Quality 11.5 / 19

Developer Ergonomics 5.9 / 15

Access Clarity 8.0 / 15

Operational Transparency 2.1 / 10

Contract Governance 0.9 / 9

Discoverability 4.3 / 8

Regulatory Posture 4.0 / 15

Create-or-Update Ergonomics 3.3 / 10

Agent readiness — 19/100 · 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 0 / 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 →

10 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 39.3 — up to +12.1 composite points Ask about this →
Contract Governance scores 9.8 — up to +10.8 composite points Ask about this →
Operational Transparency scores 21.4 — up to +10.2 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/simplelocalize/apis.yml: open an issue on github.com/api-evangelist/simplelocalize 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	37.0	-	-
IDE Extension Marketplaces (JetBrains, VS Code, Open VSX, Docker Verified Publishers, PyPI orgs)	builds-on	37.0	-	-

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 10

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

SimpleLocalize Language API

The SimpleLocalize Language API provides endpoints to create, list, update, and delete languages within a project. Each language is identified by a unique key and requires API k...

SimpleLocalize Projects API

The SimpleLocalize Projects API allows creation and listing of translation projects. It uses Personal Token authentication (Bearer) rather than API keys, enabling multi-project ...

SimpleLocalize Customer API

The SimpleLocalize Customer API enables creation and management of customer-specific translations. Customers represent end-user segments with their own translation overrides, id...

SimpleLocalize Customers API

Manage customer-specific translation segments

SimpleLocalize Export API

Export translation files in various formats

SimpleLocalize Import API

Import translation files in various formats

SimpleLocalize Languages API

Manage project languages

SimpleLocalize Projects API

Manage translation projects

SimpleLocalize Publication API

Publish translations to CDN environments

SimpleLocalize Translations API

Manage translation strings across languages and namespaces

Scroll for all 10

Postman Collections 7

Ready-to-run Postman collections for exercising this provider's APIs.

SimpleLocalize Customers API

POSTMAN

SimpleLocalize Customers Export API

POSTMAN

SimpleLocalize Customers Import API

POSTMAN

SimpleLocalize Customers Languages API

POSTMAN

SimpleLocalize Customers Projects API

POSTMAN

SimpleLocalize Customers Publication API

POSTMAN

SimpleLocalize Customers Translations API

POSTMAN

Scroll for all 7

Open Collections 8

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

SimpleLocalize Customers API

OPEN COLLECTION

SimpleLocalize Customers Export API

OPEN COLLECTION

SimpleLocalize Customers Import API

OPEN COLLECTION

SimpleLocalize Customers Languages API

OPEN COLLECTION

SimpleLocalize Customers Projects API

OPEN COLLECTION

SimpleLocalize Customers Publication API

OPEN COLLECTION

SimpleLocalize Customers Translations API

OPEN COLLECTION

SimpleLocalize API

OPEN COLLECTION

Scroll for all 8

SimpleLocalize API pricing

Prices published by SimpleLocalize, read 2026-10-28 from simplelocalize.io/pricing/.

Plan	Price
+25 team members (SAML SSO add-on row)	€25.00
Community	Community Includes: 1 000 translation keys, unlimited projects/languages, 1 year history, 1 team member, 150k characters
Developer	Developer Includes: 4 000 translation keys, 2 years history, 5 team members, 300k characters initial limit
Team	Team Includes: 12 000 translation keys, 3 years history, 25 team members, 500k characters initial limit
Business	Business Includes: 100 team members, customer translations up to 25 customers

Plan details, limits and sources →

Rate limits

Per-Account Request Throttling: see SimpleLocalize API documentation varies
Translation Keys (Plan Cap): plan-dependent (250 / 1,000 / 4,000 / 12,000) varies
Auto-Translation Character Pool: plan-dependent monthly top-up with rollover ceiling varies

Compiled by API Evangelist, not yet checked against SimpleLocalize's documentation. Rate-limit details →

Billed by: +25 team members · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

SimpleLocalize Plans Pricing

5 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

SimpleLocalize Rate Limits

3 limits

RATE LIMITS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

SimpleLocalize

19 quoted statements, read from SimpleLocalize's own page on 2026-11-10.

PRIVACY

FinOps 1

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

SimpleLocalize Finops

FINOPS

Semantic Vocabularies 1

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

Simplelocalize Context

17 classes · 3 properties

JSON-LD

Spectral Rules 2

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

SimpleLocalize — jsonschema rules

5 rules · 3 warn-severity 2 info-severity

SPECTRAL

SimpleLocalize API Rules

8 rules · 4 error-severity 4 warn-severity

SPECTRAL

JSON Schema 3

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

SimpleLocalize Language

2 properties

JSON SCHEMA

SimpleLocalize Project

6 properties

JSON SCHEMA

SimpleLocalize Translation

7 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

SimpleLocalize Translation Structure

0 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

SimpleLocalize Create Translation Example

4 fields

EXAMPLE

SimpleLocalize List Translations Example

4 fields

EXAMPLE

Security Posture 3

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

SimpleLocalize Authentication

apiKey/http · 2 schemes

SECURITY

SimpleLocalize Domain Security

TLSv1.3 · DMARC

SECURITY

SimpleLocalize Vulnerability Disclosure

no policy recorded

SECURITY

Agentic Access (API Evangelist recommendations) 1

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

SimpleLocalize Agentic Access

16 operations · 10 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 6

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

GitHubOrg

CLI

GithubAction

VSCodeExtension

SDKs

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 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

DataProcessing

DataProcessing

Source (apis.yml)

aid: simplelocalize
name: SimpleLocalize
description: SimpleLocalize is a web-based translation management platform that helps small and growing teams save time on
  handling localization files and translation strings. It provides a REST API for managing translations, languages, projects,
  and customers, along with integrations for CI/CD pipelines, frameworks, and AI-powered tools.
type: Index
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
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/simplelocalize.png
tags:
- Localization
- Translation
- Internationalization
created: '2025-02-08'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/simplelocalize/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: simplelocalize:language-api
  name: SimpleLocalize Language API
  description: The SimpleLocalize Language API provides endpoints to create, list, update, and delete languages within a project.
    Each language is identified by a unique key and requires API key authentication via the X-SimpleLocalize-Token header.
  humanURL: https://simplelocalize.io/docs/api/language-api/
  baseURL: https://api.simplelocalize.io
  tags:
  - Language
  - Localization
  tags_raw:
  - Languages
  - Localization
  properties:
  - type: Documentation
    url: https://simplelocalize.io/docs/api/language-api/
- aid: simplelocalize:projects-api
  name: SimpleLocalize Projects API
  description: The SimpleLocalize Projects API allows creation and listing of translation projects. It uses Personal Token
    authentication (Bearer) rather than API keys, enabling multi-project management workflows.
  humanURL: https://simplelocalize.io/docs/api/translation-project-management/
  baseURL: https://api.simplelocalize.io
  tags:
  - Project
  - Management
  tags_raw:
  - Projects
  - Management
  properties:
  - type: Documentation
    url: https://simplelocalize.io/docs/api/translation-project-management/
- aid: simplelocalize:customer-api
  name: SimpleLocalize Customer API
  description: The SimpleLocalize Customer API enables creation and management of customer-specific translations. Customers
    represent end-user segments with their own translation overrides, identified by a unique customer key.
  humanURL: https://simplelocalize.io/docs/api/customer-specific-api/
  baseURL: https://api.simplelocalize.io
  tags:
  - Customers
  - Localization
  properties:
  - type: Documentation
    url: https://simplelocalize.io/docs/api/customer-specific-api/
- aid: simplelocalize:simplelocalize-customers-api
  name: SimpleLocalize Customers API
  description: Manage customer-specific translation segments
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-customers-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-export-api
  name: SimpleLocalize Export API
  description: Export translation files in various formats
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Export
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-export-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-import-api
  name: SimpleLocalize Import API
  description: Import translation files in various formats
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Import
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-import-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-languages-api
  name: SimpleLocalize Languages API
  description: Manage project languages
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Language
  tags_raw:
  - Languages
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-languages-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-projects-api
  name: SimpleLocalize Projects API
  description: Manage translation projects
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-projects-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-publication-api
  name: SimpleLocalize Publication API
  description: Publish translations to CDN environments
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Publication
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-publication-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
- aid: simplelocalize:simplelocalize-translations-api
  name: SimpleLocalize Translations API
  description: Manage translation strings across languages and namespaces
  humanURL: https://simplelocalize.io/docs/api/get-started/
  baseURL: https://api.simplelocalize.io
  tags:
  - Translation
  tags_raw:
  - Translations
  properties:
  - type: OpenAPI
    url: openapi/simplelocalize-translations-api-openapi.yml
  - type: Documentation
    url: https://simplelocalize.io/docs/api/get-started/
  - type: SwaggerUI
    url: https://api.simplelocalize.io/openapi/ui
common:
- type: Plans
  url: plans/simplelocalize-plans-pricing.yml
- type: RateLimits
  url: rate-limits/simplelocalize-rate-limits.yml
- type: FinOps
  url: finops/simplelocalize-finops.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/simplelocalize/overview
- type: AgenticAccess
  url: agentic-access/simplelocalize-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/simplelocalize-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/simplelocalize-domain-security.yml
- type: Authentication
  url: authentication/simplelocalize-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/simplelocalize
- type: Website
  url: https://simplelocalize.io/
- type: Documentation
  url: https://simplelocalize.io/docs/
- type: Pricing
  url: https://simplelocalize.io/pricing/
- type: Blog
  url: https://simplelocalize.io/blog/
- type: GitHubOrg
  url: https://github.com/simplelocalize
- type: CLI
  url: https://github.com/simplelocalize/simplelocalize-cli
- type: GithubAction
  url: https://github.com/simplelocalize/github-action-cli
- type: VSCodeExtension
  url: https://github.com/simplelocalize/vscode-simplelocalize
- type: Documentation
  url: https://github.com/simplelocalize/simplelocalize-mcp-server
- type: SDKs
  url: https://github.com/simplelocalize/simplelocalize-cli-npm
- type: TermsOfService
  url: https://simplelocalize.io/terms-of-service/
- type: PrivacyPolicy
  url: https://simplelocalize.io/privacy-policy/
- type: Integrations
  url: https://simplelocalize.io/integrations/
- type: DataProcessing
  url: privacy/simplelocalize-privacy-policy.yml
integrations:
- name: Figma
- name: VS Code
- name: IntelliJ
- name: Shopify
- name: Webflow
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

SimpleLocalize API — frequently asked questions

Does SimpleLocalize have an API?

Yes. APIs.io lists 10 APIs from SimpleLocalize, including SimpleLocalize Language API, SimpleLocalize Projects API and SimpleLocalize Customer API, and 7 more.

Is there an OpenAPI specification for the SimpleLocalize API?

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

How do I authenticate with the SimpleLocalize API?

SimpleLocalize uses bearer-token authentication (apiKey/http · 2 schemes). The details are profiled on APIs.io as SimpleLocalize Authentication.

How much does the SimpleLocalize API cost?

SimpleLocalize publishes its prices; its +25 team members (SAML SSO add-on row) plan is €25.00 as of 2026-10-28. APIs.io lists 5 pricing plans for SimpleLocalize, with each plan's price, limits and inclusions under Pricing on this page.

Is the SimpleLocalize API ready for AI agents?

SimpleLocalize has a Kin Score of 47.8 out of 100 (developing) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-13.

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