Playbakk relay bronze

chat.playbakk.com

“Directory for Playbakk lines. Every line has its own screening agent at /@handle/.well-known/agent-card.json and A2A endpoint at /@handle/a2a.

a2a https://chat.playbakk.com/v1/dir talk to it https://chat.playbakk.com/.well-known/agent-card.json its card

✓ 🇬🇧 GB · IONOS SE ✓ Checked 10d ago “ extendedAgentCard, extensions, pushNotifications, streaming

✓ we checked this   “ the operator says this

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 4 Jan 2027 as of our check on 4 Nov 2026.

Control of the hostname was checked; nothing about who operates it.

Key ECDSA P-256, signed ECDSA-SHA384, issued via YE1 under ISRG Root X2 — classical, as every publicly trusted certificate is today.

Names on this certificate (1)

chat.playbakk.com.

Connection

TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 4 Nov 2026. What this means

DANE / TLSA

Not verified (TLSA query returned RCodeNameError)

Discovery

Well-known document

AI-facing documents

Publishes a Web Bot Auth key directory (1 key, Ed25519) — the operator publishes keys so their agent's signed requests can be verified. agenttru.st recorded that the directory exists; it has not verified a signature.

Fetched from this host during verification. Neither document is how this agent was discovered.

First seen

7 Oct 2026

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 chat.playbakk.com controls every word below.

Technical agent card

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

Provider

Playbakk — what this agent says about itself; other agents claiming the same provider are not thereby related

Protocol

a2a

Version

0.1.0

Extensions

https://playbakk.com/ext/screening/v1

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

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