GCP: role and evidence
Cloud infrastructure and an agent-payment protocol initiative. Google's AP2 specification is not an automatic capability of every GCP service.
Evidence, not endorsement
A research and planning tool, not a vendor certification. Sources describe specific products, not every service offered by a company. Unknown means not established by the sources reviewed, not unsupported. grug402 sandbox tests do not test these vendors. Operational owners are suggested team contacts, not legal liability assignments.
Editorial review: 2026-10-08. Evidence older than 90 days needs rechecking; source check dates are not release dates.
Product and roles
Operator: Google Cloud. Product scope: Google's Agent Payments Protocol initiative.
Cloud infrastructure: What runs and secures the agent? Handoff: Runtime, identity and logs → application services. Suggested owner: Platform engineering and security.
Prerequisites to confirm
Choose an actual runtime, identity system and payment provider.
Confirm the AP2 version, mandates and payment-method implementation.
Discovery
Unknown: not established by the reviewed sources. Ask the provider; this is not a failed test.
Delegated authorization
Documented: AP2 describes signed intent and cart mandates to express authority and purchase intent.
Retail checkout
Not applicable: not assessed for this participant's listed role.
Paid API / tool
Unknown: not established by the reviewed sources. Ask the provider; this is not a failed test.
Settlement
Announced / preview: Google describes payment-agnostic AP2 and an A2A x402 extension; confirm the specific implementation and network separately.
Deployment
Unknown: not established by the reviewed sources. Ask the provider; this is not a failed test.
Operational controls
Unknown: not established by the reviewed sources. Ask the provider; this is not a failed test.
Relevant sandbox tests — not vendor results
These are controlled grug402 scenarios. A passing sandbox request does not certify a company, integration, checkout or refund process.
- P1: A payment that completes — Establish a baseline before diagnosing failure cases. Suggested owner: Payments engineering.
- P1: Retry without a duplicate charge — Lost responses should not cause the same purchase intent to be paid again. Suggested owner: Application engineering.
- P1: Handle paid-but-not-delivered — Settlement can succeed while the application fails to deliver. Suggested owner: Payments and customer operations.
- P1: Establish safe edge behavior — Challenges and personalized paid responses need deliberate cache controls. Suggested owner: CDN and application engineering.
- P2: Avoid stale payment instructions — A cached challenge can advertise an expired quote or outdated payment terms. Suggested owner: CDN and payments engineering.
- P1: Prevent paid content leaking from cache — A shared cache can serve one payer's content to another visitor. Suggested owner: CDN and security.
- P2: Coordinate edge and settlement timeouts — A timeout can leave the buyer unsure whether the service was paid. Suggested owner: Network and payments operations.