Activity Agent bronze

activity.dev.ylang.education

“Serves activities (snapshot + step deltas) to the orchestrator.

https://activity.dev.ylang.education/.well-known/agent-card.json its card

🇫🇷 FR · Scaleway SAS Checked 3d 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 3 Dec 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified
Discovery: Well-known document
First seen: 4 Sep 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: 🇫🇷 FR · Scaleway SAS (AS12876)
Last checked: 3d 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 activity.dev.ylang.education controls every word below.

Fetch next activity

Return the next activity of a session the student has not yet completed, emitting an AG-UI ActivitySnapshotEvent ready for the UI.

activityread

Examples it gives

{"action":"fetch_next_activity","sequence_id":"…","session_id":"…","completed_activity_ids":[]}

Advance step

Emit an AG-UI ActivityDeltaEvent swapping the visible step of an activity in `steps` display mode.

activitydelta

Examples it gives

{"action":"advance_step","activity_id":"…","to_index":1}

Load activity

Re-emit an ActivitySnapshotEvent for an activity already known to be in progress (used by the orchestrator on session resume), optionally pinned to a specific activity_revision_id.

activityresume

Examples it gives

{"action":"load_activity","activity_id":"…","activity_revision_id":"…"}

Technical agent card

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

Protocol: a2a
Version: 1.0.0
Extensions: https://ylang.education/extensions/ag-ui/v1
AG-UI protocol

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: a2a.proto v1.0 requires eight top-level fields. This card omits:
supportedInterfaces

Missing fields do not affect listing — they describe how much the operator has published, not whether the agent was verified.

View all card details

Capabilities: extensions streaming
Agent card: https://activity.dev.ylang.education/.well-known/agent-card.json

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