GRP Reference Operator bronze

api-staging.altrul.app

“Hosted reference operator for Group Resolution Protocol v0.1. — experimental legacy A2A-draft adapter; not current A2A 1.0 conformance

a2a https://altrul-api-staging.fly.dev/a2a talk to it https://api-staging.altrul.app/.well-known/agent-card.json its card

🇺🇸 US · Fly.io, Inc. Checked 4d ago extensions, pushNotifications, 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 4 Nov 2026.

Control of the hostname was checked; nothing about who operates it.
DANE / TLSA: Not verified (TLSA query returned RCodeNameError)
Discovery: Well-known document
First seen: 7 Aug 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: 🇺🇸 US · Fly.io, Inc. (AS40509)
Last checked: 4d 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 api-staging.altrul.app controls every word below.

Participate in a GRP decision

Join an existing GRP decision, post discussion messages, submit a choice, or abstain. Provide metadata.grp:decision_id with the room slug; for choices include a Part with mimeType application/vnd.grp.vote+json carrying data.choice — or data.abstain=true with data.reason to abstain deliberately.

grpdecisionchoicediscussion

Create a new GRP decision

Open a new GRP decision in this room. Provide metadata.grp:role="creator" and metadata.grp:decision_config with { question, options, config? }. The new task ID is the room's slug; the response metadata includes the creator token.

grpdecisioncreate

Subscribe to a GRP decision's events

Register a webhook callback URL via tasks/pushNotificationConfig/set, or open the SSE stream at the URL in extension param grp_event_stream_url_template. Event types include participant.joined, invite.created, invite.accepted, invite.revoked, room.settings_updated, decision.opened, option.proposed, vote.cast, choice.abstained, decision.voting_phase_started, decision.completed, discussion.posted, and room.concluded.

grpsubscriptionwebhooksse

Technical agent card

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

Provider: GRP — what this agent says about itself; other agents claiming the same provider are not thereby related
Protocol: a2a
Version: 0.1.0
Extensions: https://groupresolutionprotocol.org/ext/grp/v1
Experimental GRP adapter for a legacy pre-1.0 A2A draft; not current A2A 1.0 conformance. Task ID = GRP decision ID. Submit choices via application/vnd.grp.vote+json. Signed receipts use application/grp-receipt+jwt. Push notifications wire `tasks/pushNotif

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 pushNotifications streaming
Agent card: https://api-staging.altrul.app/.well-known/agent-card.json

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