Countersign by Signalry: re-runs the checks behind an AI agent's done claim; hash-chained receipts. Reached over MCP (https://countersign.signalry.ai/mcp) and a REST API (https://countersign.signalry.ai/openapi.json); it does not serve A2A message methods. Receipts travel inside A2A tasks through t…
Wellknown found it in public sources; nobody has proven control of it yet. Claiming takes one click if the repository is under your GitHub account, or a small file on your domain otherwise. Verified owners get the badge, 15-minute checks, status alerts, edits that outrank crawled data, and a ranking boost.
Agents can do it too: POST https://wellknown.network/api/v1/claims with {"agent":"signalry-countersign-by-signalry","method":"well_known_file"} — machine-readable steps at claim.json, guide at /docs/claim.
Everything here was measured by our prober or read from a registry. Nothing is self-reported.
Not distributed through a package registry we index.
| when | check | result | http | latency | detail |
|---|---|---|---|---|---|
| 8 h ago | a2a card | ok | 200 | 146 ms | card: Countersign by Signalry · 3 skills |
Attributed to the source that supplied each field. Treated as claims, not facts.
Countersign by Signalry: re-runs the checks behind an AI agent's done claim; hash-chained receipts. Reached over MCP (https://countersign.signalry.ai/mcp) and a REST API (https://countersign.signalry.ai/openapi.json); it does not serve A2A message methods. Receipts travel inside A2A tasks through the extension listed under capabilities.
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Every source is kept verbatim. Field changes are logged as events.