Google Cloud Natural Language

Google Cloud Natural Language API provides natural language understanding technologies including sentiment analysis, entity recognition, entity sentiment analysis, content classification, and syntax analysis. It helps developers extract insights from unstructured text.

Google Cloud Natural Language publishes 5 API contracts indexed on the APIs.io network, including documents:analyzeEntities API, documents:analyzeSentiment API, Documents:analyze Syntax API, and 2 more. Tagged areas include Entity Recognition, Google Cloud, Machine Learning, Natural Language Processing, and Sentiment Analysis.

The Google Cloud Natural Language catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Google Cloud Natural Language’s developer surface includes developer portal, getting-started guide, documentation, authentication, pricing, support, and 14 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

49.1/100 developing ▬ flat Agent 18/100 agent aware saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Entity Recognition Google Cloud Machine Learning Natural Language Processing Sentiment Analysis Text Analysis

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

AI Model Services

AE-110

documents:analyzeEntitiesdocuments:analyzeSentimentdocuments:analyzeSyntaxdocuments:annotateText

POST /documents:analyzeEntities POST /documents:analyzeSyntax POST /documents:annotateText POST /documents:analyzeSentiment

Information & Data Management

BC-610

documents:classifyText

POST /documents:classifyText

Kin Score

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

Composite quality — 49.1/100 · developing

Contract Quality 10.2 / 19

Developer Ergonomics 5.5 / 15

Access Clarity 10.7 / 15

Operational Transparency 3.6 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 4.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 18/100 · 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
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 36.9 — up to +12.6 composite points
Contract Quality scores 54.5 — up to +11.4 composite points
Contract Governance scores 9.8 — up to +10.8 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/google-cloud-natural-language/apis.yml: open an issue on github.com/api-evangelist/google-cloud-natural-language 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 5

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

Google Cloud Natural Language documents:analyzeEntities API

The documents:analyzeEntities API from Google Cloud Natural Language — 1 operation(s) for documents:analyzeentities.

Google Cloud Natural Language documents:analyzeSentiment API

The documents:analyzeSentiment API from Google Cloud Natural Language — 1 operation(s) for documents:analyzesentiment.

Google Cloud Natural Language Documents:analyze Syntax API

The documents:analyzeSyntax API from Google Cloud Natural Language — 1 operation(s) for documents:analyzesyntax.

Google Cloud Natural Language Documents:annotate Text API

The documents:annotateText API from Google Cloud Natural Language — 1 operation(s) for documents:annotatetext.

Google Cloud Natural Language Documents:classify Text API

The documents:classifyText API from Google Cloud Natural Language — 1 operation(s) for documents:classifytext.

Postman Collections 5

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

Google Cloud Natural Language documents:analyzeEntities API

POSTMAN

Google Cloud Natural Language documents:analyzeEntities documents:analyzeSentiment API

POSTMAN

Google Cloud Natural Language documents:analyzeEntities documents:analyzeSyntax API

POSTMAN

Google Cloud Natural Language documents:analyzeEntities documents:annotateText API

POSTMAN

Google Cloud Natural Language documents:analyzeEntities documents:classifyText API

POSTMAN

Open Collections 6

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

Google Cloud Natural Language documents:analyzeEntities API

OPEN COLLECTION

Google Cloud Natural Language documents:analyzeEntities documents:analyzeSentiment API

OPEN COLLECTION

Google Cloud Natural Language documents:analyzeEntities documents:analyzeSyntax API

OPEN COLLECTION

Google Cloud Natural Language documents:analyzeEntities documents:annotateText API

OPEN COLLECTION

Google Cloud Natural Language documents:analyzeEntities documents:classifyText API

OPEN COLLECTION

Google Cloud Natural Language API

OPEN COLLECTION

Google Cloud Natural Language API pricing

Prices published by Google Cloud Natural Language, read 2026-10-28 from cloud.google.com/products/natural-language/pricing.

Plan	Price
Entity Analysis	$1.00 per 1,000-character unit Includes: 0 count to 5,000 count $0.00 (Free)
Sentiment Analysis	$1.00 per 1,000-character unit Includes: 0 count to 5,000 count $0.00 (Free)
Syntax Analysis	$0.50 per 1,000-character unit Includes: 0 count to 5,000 count $0.00 (Free)
Entity Sentiment Analysis	$2.00 per 1,000-character unit Includes: 0 count to 5,000 count $0.00 (Free)
Content Classification	$2.00 per 1,000-character unit Includes: 0 count to 30,000 count $0.00 (Free)
Text Moderation	$5.00 per 100-character unit Includes: 0 count to 50,000 count $0.00 (Free)

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Google Cloud Natural Language's documentation. All 5 limits →

Billed by: 1,000-character unit · FinOps profile →

Pricing Plans 1

Published pricing tiers and plan structures.

Google Cloud Natural Language Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Cloud Natural Language Rate Limits

5 limits

RATE LIMITS

Service Levels 1

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

Google Cloud Natural Language

SLA

FinOps 1

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

Google Cloud Natural Language Finops

FINOPS

Semantic Vocabularies 1

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

context Context

14 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google Cloud Natural Language — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 1

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

Document Analysis

3 properties

JSON SCHEMA

Security Posture 2

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

Google Cloud Natural Language Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Cloud Natural Language Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Google Cloud Natural Language Agentic Access

5 operations · 5 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Support

Support

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: google-cloud-natural-language
name: Google Cloud Natural Language
description: Google Cloud Natural Language API provides natural language understanding technologies including sentiment analysis,
  entity recognition, entity sentiment analysis, content classification, and syntax analysis. It helps developers extract
  insights from unstructured text.
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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-cloud-natural-language.png
url: https://raw.githubusercontent.com/api-evangelist/google-cloud-natural-language/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.23'
type: Index
tags:
- Entity Recognition
- Google Cloud
- Machine Learning
- Natural Language Processing
- Sentiment Analysis
- Text Analysis
tags_raw:
- Entity Recognition
- Google Cloud
- Machine Learning
- Natural Language Processing
- Sentiment Analysis
- Text Analysis
- Machine-Learning
apis:
- aid: google-cloud-natural-language:google-cloud-natural-language-documents-analyzeentities-api
  name: Google Cloud Natural Language documents:analyzeEntities API
  description: The documents:analyzeEntities API from Google Cloud Natural Language — 1 operation(s) for documents:analyzeentities.
  humanURL: https://cloud.google.com/natural-language
  baseURL: https://language.googleapis.com
  tags:
  - Documents Analyzeentities
  tags_raw:
  - documents:analyzeEntities
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-natural-language-documents-analyzeentities-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/natural-language/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/natural-language/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/natural-language/docs/quickstarts
  - type: JSONSchema
    url: json-schema/document-analysis.json
  - type: JSONLD
    url: json-ld/context.jsonld
- aid: google-cloud-natural-language:google-cloud-natural-language-documents-analyzesentiment-api
  name: Google Cloud Natural Language documents:analyzeSentiment API
  description: The documents:analyzeSentiment API from Google Cloud Natural Language — 1 operation(s) for documents:analyzesentiment.
  humanURL: https://cloud.google.com/natural-language
  baseURL: https://language.googleapis.com
  tags:
  - documents:analyzeSentiment
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-natural-language-documents-analyzesentiment-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/natural-language/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/natural-language/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/natural-language/docs/quickstarts
  - type: JSONSchema
    url: json-schema/document-analysis.json
  - type: JSONLD
    url: json-ld/context.jsonld
- aid: google-cloud-natural-language:google-cloud-natural-language-documents-analyzesyntax-api
  name: Google Cloud Natural Language Documents:analyze Syntax API
  description: The documents:analyzeSyntax API from Google Cloud Natural Language — 1 operation(s) for documents:analyzesyntax.
  humanURL: https://cloud.google.com/natural-language
  baseURL: https://language.googleapis.com
  tags:
  - documents:analyzeSyntax
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-natural-language-documents-analyzesyntax-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/natural-language/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/natural-language/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/natural-language/docs/quickstarts
  - type: JSONSchema
    url: json-schema/document-analysis.json
  - type: JSONLD
    url: json-ld/context.jsonld
- aid: google-cloud-natural-language:google-cloud-natural-language-documents-annotatetext-api
  name: Google Cloud Natural Language Documents:annotate Text API
  description: The documents:annotateText API from Google Cloud Natural Language — 1 operation(s) for documents:annotatetext.
  humanURL: https://cloud.google.com/natural-language
  baseURL: https://language.googleapis.com
  tags:
  - documents:annotateText
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-natural-language-documents-annotatetext-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/natural-language/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/natural-language/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/natural-language/docs/quickstarts
  - type: JSONSchema
    url: json-schema/document-analysis.json
  - type: JSONLD
    url: json-ld/context.jsonld
- aid: google-cloud-natural-language:google-cloud-natural-language-documents-classifytext-api
  name: Google Cloud Natural Language Documents:classify Text API
  description: The documents:classifyText API from Google Cloud Natural Language — 1 operation(s) for documents:classifytext.
  humanURL: https://cloud.google.com/natural-language
  baseURL: https://language.googleapis.com
  tags:
  - documents:classifyText
  properties:
  - type: OpenAPI
    url: openapi/google-cloud-natural-language-documents-classifytext-api-openapi.yml
  - type: Documentation
    url: https://cloud.google.com/natural-language/docs/reference/rest
  - type: Authentication
    url: https://cloud.google.com/natural-language/docs/authentication
  - type: GettingStarted
    url: https://cloud.google.com/natural-language/docs/quickstarts
  - type: JSONSchema
    url: json-schema/document-analysis.json
  - type: JSONLD
    url: json-ld/context.jsonld
common:
- type: Plans
  url: plans/google-cloud-natural-language-plans-pricing.yml
- type: RateLimits
  url: rate-limits/google-cloud-natural-language-rate-limits.yml
- type: FinOps
  url: finops/google-cloud-natural-language-finops.yml
- type: CapabilityMap
  url: capabilities/google-cloud-natural-language-capability-edges.yml
  name: Google Cloud Natural Language Business Capability Map
- type: Website
  url: https://www.google.com/
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-cloud-natural-language/overview
- type: AgenticAccess
  url: agentic-access/google-cloud-natural-language-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-cloud-natural-language-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-cloud-natural-language-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/GoogleCloudPlatform
- type: Portal
  url: https://cloud.google.com/natural-language
- type: GettingStarted
  url: https://cloud.google.com/natural-language/docs/quickstarts
- type: Documentation
  url: https://cloud.google.com/natural-language/docs
- type: Authentication
  url: https://cloud.google.com/natural-language/docs/authentication
- type: Pricing
  url: https://cloud.google.com/natural-language/pricing
- type: TermsOfService
  url: https://cloud.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: StatusPage
  url: https://status.cloud.google.com/
- type: Support
  url: https://cloud.google.com/natural-language/docs/support
- type: JSONLD
  url: json-ld/context.jsonld
- type: Integrations
  url: https://cloud.google.com/marketplace
integrations:
- name: Become a Partner
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: google-cloud-platform
x-relationship: product

Google Cloud Natural Language API — frequently asked questions

Does Google Cloud Natural Language have an API?

Yes. APIs.io lists 5 APIs from Google Cloud Natural Language, including Google Cloud Natural Language documents:analyzeEntities API, Google Cloud Natural Language documents:analyzeSentiment API and Google Cloud Natural Language Documents:analyze Syntax API, and 2 more.

Is there an OpenAPI specification for the Google Cloud Natural Language API?

Yes. APIs.io indexes 5 OpenAPI specifications for Google Cloud Natural Language, each linked for download from this page.

How do I authenticate with the Google Cloud Natural Language API?

Google Cloud Natural Language uses bearer-token authentication.

How much does the Google Cloud Natural Language API cost?

Google Cloud Natural Language publishes its prices; its Entity Analysis plan is $1.00 per 1,000-character unit as of 2026-10-28. APIs.io lists 6 pricing plans for Google Cloud Natural Language, with each plan's price, limits and inclusions under Pricing on this page.

Is the Google Cloud Natural Language API ready for AI agents?

Google Cloud Natural Language has a Kin Score of 49.1 out of 100 (developing) and an Agent Readiness score of 17.9 (agent-aware), scored by API Evangelist on 2026-11-06.

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