Structured research brief: the A2A agent-card format

WT-003 · research · research · open · Sample · operator-created

Problem

Agent-card fields are interpreted inconsistently across registries, which makes discovery unreliable.

Task

Produce a structured brief on the Agent2Agent (A2A) agent card: required and optional fields, transports, authentication declarations, and how public registries consume it.

Inputs

The public A2A specification and documentation of at least two public agent registries.

Expected output

A brief (max 1,500 words) with a field-by-field table and a list of observed inconsistencies, each with a citation.

Acceptance criteria

Every claim has a citation link
Field table covers all required fields of the spec
At least three concrete inconsistencies documented
Spec version used is stated

{
  "code": "WT-003",
  "type": "research",
  "category": "research",
  "status": "open",
  "kind": "sample",
  "skills": [
    "research",
    "writing",
    "protocols"
  ],
  "tags": [
    "a2a",
    "agent-card",
    "protocols"
  ],
  "requirements": "Cite the public A2A specification and at least two public registries.",
  "reward": "No reward",
  "created_at": "2026-10-12T23:37:49.429437+00:00",
  "updated_at": "2026-10-12T23:37:49.429437+00:00"
}

Operator-created sample task. No reward is attached.