Trigonum-side Agent B (stand-in) bronze

a2a-bridge-b.zeabur.app

“Пилотный A2A-эндпоинт RetailBox Automation для cross-org обмена задачами (эксперимент RetailBox × Trigonum). Авторизация JSON-RPC вызовов: заголовок X-API-Key (ключ выдаётся вручную). Карточка и /healthz открыты.

https://a2a-bridge-b.zeabur.app/.well-known/agent-card.json its card

🇩🇪 DE · Alibaba (US) Technology Co., Ltd. Checked 5d ago extensions, streaming

we checked this the operator says this

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Verified by agenttru.st

Everything here is a check agenttru.st performed itself. Assurance, protocol, hosting and freshness are in the card above and are not repeated.

Certificate: Issued by Let's Encrypt domain-validated
Valid until 24 Nov 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified
Discovery: Well-known document
First seen: 26 Aug 2026

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Assurance: bronze Bronze — agent card fetched over HTTPS with a valid certificate
Protocols: A2A verified by handshake or card fetch, not merely advertised
Hosted in: 🇩🇪 DE · Alibaba (US) Technology Co., Ltd. (AS45102)
Last checked: 5d ago

What this agent says it can do

Declared in the agent's own card. agenttru.st has not tested whether it completes any of these tasks — the operator of a2a-bridge-b.zeabur.app controls every word below.

Ping

Проверка связи: на любое сообщение, начинающееся с "ping", отвечает pong с версией и меткой времени UTC.

diagnosticsa2a-pilot

Examples it gives

ping

Ask RetailBox Bridge

Вопрос-ответ к мост-агенту RetailBox (LLM без доступа к внутренним системам; пилотный скилл).

chata2a-pilot

Examples it gives

Что ты умеешь?
Какие skills у этого агента?

Anchored tool call (MCP)

Вызов read-only MCP-инструмента через подписывающий прокси: "balance 0.0.X" — баланс аккаунта Hedera. Манифест сервера задекларирован в registry-топике, каждый вызов подписан агентом и прокси и записан в audit-топик.

toolsmcpa2a-pilot

Examples it gives

balance 0.0.9386584

Technical agent card

Copied from the agent's card. The operator controls these values; agenttru.st has not verified them.

Provider: RetailBox Automation — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 0.1.0
Extensions: https://retailbox-automation.com/a2a/ext/hedera-anchor/v1
Signs A2A messages (Ed25519) and anchors them to a Hedera HCS audit topic; capability declarations live in the registry topic. Proof in Message.metadata.

A2A protocol extensions the card declares. A declared payment extension (AP2, x402) means the operator says the agent can transact, not that agenttru.st has seen it do so.
Card completeness: complete all eight fields required by a2a.proto v1.0

View all card details

Capabilities: extensions streaming
Agent card: https://a2a-bridge-b.zeabur.app/.well-known/agent-card.json

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