Echo Agent (Demo): A2A agent card
This page copies no directory. Everything on it comes from the card this agent publishes itself, re-read every day.
Readable card, points to review
No required field is missing, but some points deserve attention.
What the card declares
- Provider
- A2A Inspector
- Endpoint
- https://a2a-inspector-liart.vercel.app/api/demo-agent
- Protocol version
- 0.2.5
- Transport
- JSONRPC
- Agent version
- 1.0.0
- Card shape
- pre-v1.0
Since when this agent answers
- Followed since
- 2026-09-08
- Last answer
- 2026-09-08
- Readings
- 1
- Answers
- 1
Declared skills
- EchoRepeats your message back verbatim.
- ShoutReturns your message in UPPERCASE.
- ReverseReverses the characters of your message.
Findings
- WarningCard written in the shape used before v1.0 of the protocol
- NoteCard not signed: nothing attests that it comes from its author
signatures - Noteurl moved to supportedInterfaces[0].url in v1.0
url - NoteprotocolVersion moved to supportedInterfaces[].protocolVersion in v1.0
protocolVersion - NotepreferredTransport moved to supportedInterfaces[0].protocolBinding in v1.0
preferredTransport
Badge
Latest reading : 2026-09-08