languagelayer

Language detection REST API that identifies 173 languages and accents from text with confidence scores, character usage statistics, and batch processing support, powered by an AI-based detection algorithm via the APILayer platform.

languagelayer publishes 2 API contracts indexed on the APIs.io network: Batch API and Detect API. Tagged areas include Language Detection, Natural Language Processing, Text Analysis, Machine Learning, and Artificial Intelligence.

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

languagelayer’s developer surface includes authentication, documentation, engineering blog, pricing, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

31.6/100 thin ▬ flat Agent 28/100 agent aware Front door AI 3/6 light saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Language Detection Natural Language Processing Text Analysis Machine Learning Artificial Intelligence

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 31.6/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 3.4 / 15

Access Clarity 2.8 / 15

Operational Transparency 2.1 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.3 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 28/100 · 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 8 / 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

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
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

8 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 18.4 — up to +16.3 composite points
Developer Ergonomics scores 22.6 — up to +15.5 composite points
Contract Quality scores 54.2 — up to +11.5 composite points

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.

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/languagelayer/apis.yml: open an issue on github.com/api-evangelist/languagelayer 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 →

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 2

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

languagelayer Batch API

The Batch API from languagelayer — 1 operation(s) for batch.

languagelayer Detect API

The Detect API from languagelayer — 1 operation(s) for detect.

Open Collections 2

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

languagelayer Batch API

OPEN COLLECTION

languagelayer Batch Detect API

OPEN COLLECTION

languagelayer API pricing

Not yet checked against languagelayer's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free	Free
Basic	$4.99
Professional	$19.99
Enterprise	$39.99

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Languagelayer Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Languagelayer Rate Limits

0 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

languagelayer

SLA

FinOps 1

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

Languagelayer Finops

FINOPS

Semantic Vocabularies 1

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

Languagelayer Context

0 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

languagelayer — jsonschema rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 2

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

DetectResponse

3 properties

JSON SCHEMA

LanguageResult

5 properties

JSON SCHEMA

Examples 2

Example request and response payloads for these APIs.

Batch Detect

4 fields

EXAMPLE

Detect English

4 fields

EXAMPLE

Security Posture 2

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

Languagelayer Authentication

apiKey · 1 scheme

SECURITY

Languagelayer Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Languagelayer Agentic Access

2 operations · 1 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

GitHubOrg

GitHubOrg

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: languagelayer
name: languagelayer
description: Language detection REST API that identifies 173 languages and accents from text with confidence scores, character
  usage statistics, and batch processing support, powered by an AI-based detection algorithm via the APILayer platform.
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: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/languagelayer.png
url: https://raw.githubusercontent.com/api-evangelist/languagelayer/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
x-docs-platform: redoc
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Language Detection
- Natural Language Processing
- Text Analysis
- Machine Learning
- Artificial Intelligence
tags_raw:
- Language Detection
- Natural Language Processing
- Text Analysis
- Machine Learning
- AI
- Machine-Learning
apis:
- aid: languagelayer:languagelayer-batch-api
  name: languagelayer Batch API
  description: The Batch API from languagelayer — 1 operation(s) for batch.
  humanURL: https://languagelayer.com/
  baseURL: https://apilayer.net/api
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/languagelayer-batch-api-openapi.yml
  - type: Documentation
    url: https://languagelayer.com/documentation
- aid: languagelayer:languagelayer-detect-api
  name: languagelayer Detect API
  description: The Detect API from languagelayer — 1 operation(s) for detect.
  humanURL: https://languagelayer.com/
  baseURL: https://apilayer.net/api
  tags:
  - Detect
  properties:
  - type: OpenAPI
    url: openapi/languagelayer-detect-api-openapi.yml
  - type: Documentation
    url: https://languagelayer.com/documentation
common:
- type: AgenticAccess
  url: agentic-access/languagelayer-agentic-access.yml
- type: DomainSecurity
  url: security/languagelayer-domain-security.yml
- type: Authentication
  url: authentication/languagelayer-authentication.yml
- type: Website
  url: https://languagelayer.com/
- type: Documentation
  url: https://languagelayer.com/documentation
- type: GitHubOrg
  url: https://github.com/apilayer
- type: LinkedIn
  url: https://www.linkedin.com/company/apilayer/
- type: Blog
  url: https://blog.apilayer.com/
- type: Pricing
  url: https://languagelayer.com/pricing
- type: StatusPage
  url: https://languagelayer.com/api-status
- type: X
  url: https://x.com/apilayernet
- type: Plans
  url: plans/languagelayer-plans-pricing.yml
- type: RateLimits
  url: rate-limits/languagelayer-rate-limits.yml
- type: FinOps
  url: finops/languagelayer-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

languagelayer API — frequently asked questions

Does languagelayer have an API?

Yes. APIs.io lists 2 APIs from languagelayer, including languagelayer Batch API and languagelayer Detect API.

Is there an OpenAPI specification for the languagelayer API?

Yes. APIs.io indexes 2 OpenAPI specifications for languagelayer, each linked for download from this page.

How do I authenticate with the languagelayer API?

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

How much does the languagelayer API cost?

APIs.io lists 4 pricing plans for languagelayer, with each plan's price, limits and inclusions under Pricing on this page.

Is the languagelayer API ready for AI agents?

languagelayer has a Kin Score of 31.6 out of 100 (thin) and an Agent Readiness score of 27.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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