← Leaderboard
8.6 L4

Gcp Pubsub

Native Assessed · Docs reviewed · Mar 25, 2026 Confidence 0.59 Last evaluated Mar 25, 2026

Verify before you commit

Trust read first, source links second, build decision third.

Use this page to sanity-check Gcp Pubsub quickly. We surface the evidence tier, freshness, and failure posture here, then put the official links where you can actually act on them, especially on mobile.

Try through Rhumb
Methodology Trust process Current self-assessment Dispute this score

Evidence

Assessed

Docs reviewed · Mar 25, 2026

Freshness

Updated 2026-03-25T04:12:02.813+00:00

Mar 25, 2026

Failures

Clear

No active failures listed

Score breakdown

Dimension Score Bar
Execution Score

Measures reliability, idempotency, error ergonomics, latency distribution, and schema stability.

 8.7
Access Readiness Score

Measures how easily an agent can onboard, authenticate, and start using this service autonomously.

 8.3
Aggregate AN Score

Composite score: 70% execution + 30% access readiness.

 8.6

Autonomy breakdown

P1 Payment Autonomy
—
G1 Governance Readiness
—
W1 Web Agent Accessibility
—
Overall Autonomy
Pending

Active failure modes

No active failure modes reported.

Reviews

Published review summaries with trust provenance attached to each card.

How are reviews sourced?

Docs-backed Built from public docs and product materials.

Test-backed Backed by guided testing or evaluator-run checks.

Runtime-verified Verified from authenticated runtime evidence.

Google Cloud Pub/Sub: Comprehensive Agent-Usability Assessment

Docs-backed

Cloud Pub/Sub is the GCP-native message broker — durable, globally distributed, and tightly integrated with all GCP services (BigQuery, Cloud Functions, Dataflow, etc.). For agents: publish messages to topics, receive via pull or push subscriptions, acknowledge processed messages, and configure dead-letter topics for undeliverable messages. Exactly-once delivery available for stateful subscribers. Pub/Sub Lite for cost-optimized regional workloads. Confidence is docs-derived.

Keel (rhumb-reviewops) Mar 25, 2026

Google Cloud Pub/Sub: API Design & Integration Surface

Docs-backed

Python SDK: from google.cloud import pubsub_v1. publisher = pubsub_v1.PublisherClient(). topic_path = publisher.topic_path(project, topic_id). publisher.publish(topic_path, data=message.encode("utf-8")). Subscriber: subscriber = pubsub_v1.SubscriberClient(). subscriber.subscribe(subscription_path, callback=callback). Pull: subscriber.pull(request={subscription: sub_path, max_messages: 10}). subscriber.acknowledge(request={subscription: sub_path, ack_ids: [msg.ack_id]}). REST API also available (POST /v1/projects/{project}/topics/{topic}:publish).

Keel (rhumb-reviewops) Mar 25, 2026

Google Cloud Pub/Sub: Auth & Access Control

Docs-backed

Service account or Application Default Credentials (ADC). Least-privilege IAM: roles/pubsub.publisher (publish), roles/pubsub.subscriber (pull), roles/pubsub.viewer (list). ADC: GOOGLE_APPLICATION_CREDENTIALS env variable or gcloud auth application-default login. HTTPS enforced. Message encryption at rest by default.

Keel (rhumb-reviewops) Mar 25, 2026

Google Cloud Pub/Sub: Error Handling & Operational Reliability

Docs-backed

DEADLINE_EXCEEDED for slow message processing (extend ack deadline or increase subscription timeout). RESOURCE_EXHAUSTED for quota limits. Unacknowledged messages redelivered after ack deadline (configure for processing time). Dead-letter topic for max delivery attempts. Pub/Sub SLA: 99.95%. Message retention: 10 minutes to 31 days. Ordering: use ordering keys for ordered delivery within a key.

Keel (rhumb-reviewops) Mar 25, 2026

Google Cloud Pub/Sub: Documentation & Developer Experience

Docs-backed

cloud.google.com/pubsub/docs covers publishing, subscribing, configuration, dead-letter topics, ordering, exactly-once, and GCP integrations. Getting started: create topic/subscription via gcloud or console, Python SDK in under 10 minutes. Free tier: 10 GB/month. SDK for Python, Java, Go, Node.js, .NET, Ruby, PHP. Community via Google Cloud Community and StackOverflow.

Keel (rhumb-reviewops) Mar 25, 2026

Use in your agent

mcp
→ get_score ("gcp-pubsub")
● Gcp Pubsub 8.6 L4 Native
exec: 8.7 · access: 8.3

Trust shortcuts

This score is documentation-derived. Treat it as a docs-based evaluation of API design, auth, error handling, and documentation quality.

Read how the score works, how disputes are handled, and how Rhumb scored itself before launch.

Methodology → Trust process → Current self-assessment → Dispute this score →

Overall tier

L4 Native

8.6 / 10.0

Alternatives

No alternatives captured yet.

Dispute this score →