Google Assistant

The Google Assistant API enables developers to embed the Google Assistant into devices and applications. It provides conversational interfaces through gRPC and REST endpoints for sending text or audio queries and receiving responses. The API supports device model and instance registration, custom Actions with intents and scenes, and the Actions SDK for building conversational experiences that extend the Assistant's capabilities.

Google Assistant publishes 1 API contract indexed on the APIs.io network. Tagged areas include Actions on Google, Conversational AI, Google Assistant, Natural-Language, and Smart Home.

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

Google Assistant’s developer surface includes getting-started guide, pricing, and 9 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.3/100 thin ▬ flat Agent 15/100 agent aware saas Full breakdown ↓
scored 2026-10-17 · rubric v0.24.0

AccessFreemium

1 published contract

Actions on GoogleConversational AIGoogle AssistantNatural-Language Smart Home Voice Assistant

Kin Score

Kin Score How this is scored →
scored 2026-10-17 · rubric v0.24.0

Composite quality — 27.3/100 · thin

Contract Quality 9.7 / 19

Developer Ergonomics 1.8 / 15

Access Clarity 2.8 / 15

Operational Transparency 1.0 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 15/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

Regulatory Posture applies to this provider. Its tags matched the AI & Biometrics 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/.

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 github.com/api-evangelist/google-assistant: open an issue to ask a question, or submit a pull request to add artifacts. 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
IoT and Smart Home	undeclared	-	-	-

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.

APIs 1

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

Google Assistant API

Interact with Google Assistant

Open Collections 3

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

API Collection

OPEN COLLECTION

Google Assistant API

OPEN COLLECTION

Google Assistant API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Google Assistant Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Assistant Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Google Assistant Finops

FINOPS

Semantic Vocabularies 1

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

Google Assistant Context

0 classes · 9 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google Assistant — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 1

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

Google Assistant API Schema

0 properties

JSON SCHEMA

Security Posture 2

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

Google Assistant Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Assistant Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Google Assistant Agentic Access

6 operations · 3 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

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 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Pricing

Pricing

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: google-assistant
name: Google Assistant
description: The Google Assistant API enables developers to embed the Google Assistant into devices and applications. It provides
  conversational interfaces through gRPC and REST endpoints for sending text or audio queries and receiving responses. The
  API supports device model and instance registration, custom Actions with intents and scenes, and the Actions SDK for building
  conversational experiences that extend the Assistant's capabilities.
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: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-assistant.png
url: https://raw.githubusercontent.com/api-evangelist/google-assistant/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-09-16'
specificationVersion: '0.23'
tags:
- Actions on Google
- Conversational AI
- Google Assistant
- Natural-Language
- Smart Home
- Voice Assistant
tags_raw:
- Actions on Google
- Conversational AI
- Google Assistant
- Natural Language
- Smart Home
- Voice Assistant
apis:
- aid: google-assistant:google-assistant-assistant-api
  name: Google Assistant API
  description: Interact with Google Assistant
  humanURL: https://developers.google.com/assistant
  baseURL: https://embeddedassistant.googleapis.com
  tags:
  - Assistant
  properties:
  - type: OpenAPI
    url: openapi/google-assistant-assistant-api-openapi.yml
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/google-assistant/refs/heads/main/json-schema/google-assistant.json
  - type: JSONLD
    url: https://raw.githubusercontent.com/api-evangelist/google-assistant/refs/heads/main/json-ld/google-assistant.jsonld
common:
- type: Plans
  url: plans/google-assistant-plans-pricing.yml
- type: RateLimits
  url: rate-limits/google-assistant-rate-limits.yml
- type: FinOps
  url: finops/google-assistant-finops.yml
- type: Website
  url: https://www.google.com/
- type: AgenticAccess
  url: agentic-access/google-assistant-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-assistant-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-assistant-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/googlesamples
- type: GettingStarted
  url: https://developers.google.com/assistant/sdk/overview
- type: Pricing
  url: https://developers.google.com/assistant
- type: JSONLD
  url: https://raw.githubusercontent.com/api-evangelist/google-assistant/refs/heads/main/json-ld/google-assistant.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: google
x-relationship: product

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