# Google Pub/Sub

**Canonical:** https://apis.io/providers/google-pub-sub/  
**Website:** https://cloud.google.com/pubsub  
**APIs profiled:** 6

Google Cloud Pub/Sub is a fully managed, real-time messaging service that allows you to send and receive messages between independent applications, providing reliable, many-to-many, asynchronous messaging for event ingestion, streaming analytics, and event-driven computing.

## Kin Score — 40.1 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 40.1).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 71.3 |
| Governance | 13.6 |
| Contract Governance | 13.6 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 26.3 |
| Access Clarity | 26.3 |

## Agent readiness — 30.3 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | derived |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (6)

- **Google Pub/Sub Publish API** — Publish messages to topics
- **Google Pub/Sub Schemas API** — Manage Pub/Sub schemas
- **Google Pub/Sub Snapshots API** — Manage subscription snapshots
- **Google Pub/Sub Subscribe API** — Pull and acknowledge messages
- **Google Pub/Sub Subscriptions API** — Manage Pub/Sub subscriptions
- **Google Pub/Sub Topics API** — Manage Pub/Sub topics

## Agentic access (1)

- **Google Pub Sub Agentic Access** — 19 operations · 12 acting

## Security (3)

- **Google Pub Sub Authentication** — http/oauth2 · 2 schemes
- **Google Pub Sub Domain Security** — TLSv1.3 · HSTS · DMARC
- **Google Pub Sub Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Google Pub Sub Plans Pricing**

## Tags

Cloud, Event-Driven, Google Cloud, Messaging, Pub-Sub, Streaming

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/google-pub-sub/). Scores are computed from the provider's own public artifacts under a published rubric.