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ADK 2.5 TELEMETRYCYMBAL COMMERCE AGENTIC ENGINEAP2 v0.2 MANDATESA2A JSON-RPC 2.0

Live Agent Observation Deck

Centralized judge cockpit streaming real-time protocol chatter across all 4 autonomous commerce loops. Inspect JSON-RPC 2.0 envelopes, AP2 mandate transitions, Ed25519/ES256 signatures, and Selective Disclosure JWT (SD-JWT) verifications.

LOOP 1

Stalled Cart Recovery

15m inactivity detection ➔ Long Horizon Policy evaluation ➔ A2A JSON-RPC 5% discount offer.

LOOP 2

Stock Intent Matcher

Depot stock arrival ➔ Deterministic match ➔ AP2 OpenMandate converted to ClosedMandate with checkout_hash.

LOOP 3

Detractor Escalation

Post-service NPS ≤ 6 ➔ Review link suppressed ➔ Interactive card dispatched to Google Chat.

LOOP 4

AI Buying Assistant

Gemini 3.7 Flash grounded consultation ➔ UK vehicle reg fitment ➔ Workshop bay schedule.

LIVE TELEMETRYOBSERVATION DECK • JSON-RPC 2.0 / A2A / AP2 v0.2

Live Agent Protocol Chatter Console

Inspect real-time cryptographic handshakes, agent negotiation envelopes, and deterministic state transitions.

Packets Streamed
0
A2A Negotiations
0
Mandates Sealed
0
SD-JWT Verified
0
Avg Loop Latency
0 ms
Filter Loop:

No telemetry packets match the active filter.

TRANSPORT: LOCAL_A2A_BUS|DISPLAYING: 0 / 0
SPEC: RFC-JSON-RPC-2.0 • AP2-v0.2|CYMBAL AUTONOMOUS PROTOCOL ENGINE

AP2 v0.2 Autonomous Purchasing Protocol

1. OpenCheckoutMandate

Issued by the user with bounding constraints (maxAmount, allowedMerchants: ["cymbal-tyres-uk"], and expiresAt). Pre-authorizes autonomous execution when out-of-stock inventory arrives.

2. ClosedCheckoutMandate

Produced upon stock replenishment. Deterministic matching binds the Open Mandate to exact stock pricing, computing cryptographic checkout_hash. Signed by Buyer Agent using Ed25519.

3. PaymentMandate & Settlement

Payment processor asserts cryptographic integrity of checkout_hash matching the sealed ClosedMandate before charging funds.

SD-JWT Selective Disclosure & A2A Security

Selective Disclosure JWT (IETF SD-JWT)

Allows the Buyer Agent to prove authorization limit and verified identity to the merchant without revealing sensitive payment PANs or raw credit card data to unauthorized intermediaries.

A2A JSON-RPC 2.0 Negotiation

Agent-to-Agent message envelopes encapsulate structured intent negotiation (commerce.recovery.offer and inventory.intent.ready) with strict schema validation.

Deterministic Policy Verification

Strict mathematical guardrails enforce discount limits (max 5%), TTL expiration (2h), and price tolerance rules without non-deterministic hallucinations.