Directory / A2A Commerce Gateway / Version

A2A Commerce Gateway: card of 2026-10-01

First seen · 1.4.10

Interfaces

Binding	A2A version	URL
JSONRPC	–	`https://api.greenhelix.net/`

Capabilities

Streaming: Yes
Push notifications: No
Extended card for signed-in callers: Not declared

Security and formats

Requires: Not declared
Schemes: Not declared
Accepts: application/json
Returns: application/json

Skills

Billing & Wallets billing
Agent wallets, credit deposits/withdrawals, usage tracking, budget caps, volume discounts, currency exchange, and leaderboards
billing wallet credits usage budget commerce
In: application/json · Out: application/json
Payments & Escrow payments
Payment intents (authorize/capture), standard and performance-gated escrow, subscriptions, split payments, and refunds
payments escrow subscriptions refunds commerce
In: application/json · Out: application/json
Identity & Reputation identity
Ed25519 cryptographic agent identity, verifiable claims, metric commitments, organizations, and reputation scoring
identity reputation ed25519 verification claims
In: application/json · Out: application/json
Service Marketplace marketplace
Service registration, discovery, matching, ratings, and strategy comparison
marketplace discovery ratings services
In: application/json · Out: application/json
Trust Scoring trust
Composite trust scores, SLA compliance checking, and server search
trust reputation sla scoring
In: application/json · Out: application/json
Agent Messaging messaging
End-to-end encrypted agent-to-agent messaging and price negotiation
messaging encryption negotiation communication
In: application/json · Out: application/json
Dispute Resolution disputes
Dispute lifecycle management: open, respond, resolve, with 7-day response deadline
disputes resolution arbitration
In: application/json · Out: application/json
Infrastructure infrastructure
API key management, webhook registration with HMAC-signed delivery, event bus with schema registry, audit logging, and database operations
infrastructure webhooks events audit api-keys
In: application/json · Out: application/json