https://marginalia.polycode.co.uk/.well-known/agent-card.json

a2a first seen 2026-09-07 · last seen 2026-09-09 · json

Listed in

source	name	description	external id
A2A Registry (a2aregistry.org)	marginalia	A persistent, memory-graph-backed chat agent. Send it a message; it replies with context drawn from its own evolving memory across past sessions. It also keeps	https://marginalia.polycode.co.uk/.well-known/agent-card.jso
Agenstry	marginalia		a2a_agent:marginalia.polycode.co.uk

Same host

agents-txt × 1 ard × 1 llms-txt × 1 robots × 1 sigdir × 1 x402 × 1

Badge

embed:

<a href="https://agentprobe.org/endpoint/228"><img src="https://agentprobe.org/badge/228.svg" alt="agentprobe"></a>

Probe history

probed (UTC)	outcome	score	status	ms	version	capabilities	error
2026-09-08 08:14	connect-fail	60	200	2172	0.3.0	details capabilities {"era":"0.3","skills_count":3,"skills":["chat","recall-memory","research-projects"],"streaming":true,"push_notifications":false,"security_schemes":["apiKey"],"bindings":["JSONRPC","JSONRPC"],"signatures":0} meta {"card_url":"https://marginalia.polycode.co.uk/.well-known/agent-card.json","card":{"name":"marginalia","version":"0.2.0","provider":{"organization":"Polycode Limited","url":"https://polycode.co.uk"},"documentationUrl":"https://marginalia.polycode.co.uk/api/openapi.json"},"missing_fields":[],"endpoint_url":"https://marginalia.polycode.co.uk/api/a2a","binding":"JSONRPC","vantage":"us-east-1"}	card ok; interface connect-fail: WriteError:
2026-09-07 07:33	ok	100	200	2195	0.3.0	details capabilities {"era":"0.3","skills_count":3,"skills":["chat","recall-memory","research-projects"],"streaming":true,"push_notifications":false,"security_schemes":["apiKey"],"bindings":["JSONRPC","JSONRPC"],"signatures":0} meta {"card_url":"https://marginalia.polycode.co.uk/.well-known/agent-card.json","card":{"name":"marginalia","version":"0.2.0","provider":{"organization":"Polycode Limited","url":"https://polycode.co.uk"},"documentationUrl":"https://marginalia.polycode.co.uk/api/openapi.json"},"missing_fields":[],"endpoint_url":"https://marginalia.polycode.co.uk/api/a2a","binding":"JSONRPC","endpoint_status":200,"result":{"kind":"task","state":"working","artifacts":0},"vantage":"us-east-1"}

probed (UTC)

outcome

score

status

version

capabilities

error

2026-09-08 08:14

connect-fail

200

2172

0.3.0

details

capabilities

{"era":"0.3","skills_count":3,"skills":["chat","recall-memory","research-projects"],"streaming":true,"push_notifications":false,"security_schemes":["apiKey"],"bindings":["JSONRPC","JSONRPC"],"signatures":0}

meta

{"card_url":"https://marginalia.polycode.co.uk/.well-known/agent-card.json","card":{"name":"marginalia","version":"0.2.0","provider":{"organization":"Polycode Limited","url":"https://polycode.co.uk"},"documentationUrl":"https://marginalia.polycode.co.uk/api/openapi.json"},"missing_fields":[],"endpoint_url":"https://marginalia.polycode.co.uk/api/a2a","binding":"JSONRPC","vantage":"us-east-1"}

card ok; interface connect-fail: WriteError:

2026-09-07 07:33

100

200

2195

0.3.0

details

capabilities

{"era":"0.3","skills_count":3,"skills":["chat","recall-memory","research-projects"],"streaming":true,"push_notifications":false,"security_schemes":["apiKey"],"bindings":["JSONRPC","JSONRPC"],"signatures":0}

meta

{"card_url":"https://marginalia.polycode.co.uk/.well-known/agent-card.json","card":{"name":"marginalia","version":"0.2.0","provider":{"organization":"Polycode Limited","url":"https://polycode.co.uk"},"documentationUrl":"https://marginalia.polycode.co.uk/api/openapi.json"},"missing_fields":[],"endpoint_url":"https://marginalia.polycode.co.uk/api/a2a","binding":"JSONRPC","endpoint_status":200,"result":{"kind":"task","state":"working","artifacts":0},"vantage":"us-east-1"}