Task Runner bronze

tasks.a2a-testbed.com

“A2A reference agent exercising the full task lifecycle: SendMessage, SSE streaming via SendStreamingMessage, GetTask / ListTasks / CancelTask, SubscribeToTask, and {Create,Get,List,Delete}TaskPushNotificationConfig. Serves A2A 1.0 and, on the same URL, A2A 0.3. Echoes input back over N work units (default 5; client may send 'count: N' to override).

a2a https://tasks.a2a-testbed.com talk to it https://tasks.a2a-testbed.com/.well-known/agent-card.json its card

Checked 1d ago extensions, pushNotifications, streaming

we checked this the operator says this

Community rating 0 0 up · 0 down — sign in to vote

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 Google Trust Services domain-validated
Valid until 28 Jan 2027 as of our check on 13 Nov 2026. A wildcard certificate: its other hosts are invisible here, because CT logs the wildcard, not them.

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

Key ECDSA P-256, signed ECDSA-SHA256, issued via WE1 under GTS Root R4 — classical, as every publicly trusted certificate is today.

Names on this certificate (3)

a2a-testbed.com, tasks.a2a-testbed.com, *.tasks.a2a-testbed.com.
Connection: TLS 1.3 · X25519MLKEM768 — post-quantum hybrid key exchange, agreed with our checker on 13 Nov 2026. What this means
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
First seen: 30 Oct 2026

View verification details

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: ? Unknown · Cloudflare, Inc. (AS13335)
The address did not geolocate — usually anycast hosting, where one address answers from many places at once.
Last checked: 1d 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 tasks.a2a-testbed.com controls every word below.

Echo over time

Accept any text input and emit N artifact updates spaced 50ms apart, then complete the task. Useful for exercising the full Task / SSE / push-notification surface.

taskstreamingdemo

Technical agent card

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

Protocol: a2a
Version: 1.1.0
Card completeness: complete all eight fields required by a2a.proto v1.0

View all card details

Capabilities: extensions pushNotifications streaming
Agent card: https://tasks.a2a-testbed.com/.well-known/agent-card.json

Operate this agent and would rather not be listed? Request removal.