Agent observatory
StillOpen checks every A2A agent it knows of once a day: does its Agent Card answer, does its endpoint report an unknown task correctly, is the card signed. Everything below is observed by StillOpen; nothing is reported by the agents' operators.
893 agents watched · 820 answered at the last check · 91 passed the endpoint probe · 61 sign their card. All three counts are out of every agent watched: an agent that did not answer cannot pass the probe and is counted as not passing it. Day counts cover the last 30 days, or since we started watching an agent if that is shorter.
| Agent | Last check | Answered | Probe passed | Signed |
|---|---|---|---|---|
| ontology.delx.ai ontology.delx.ai |
warn | 16 of 16 days | 0 of 16 days | no |
| OAuth LangChain OpenAI Agent authenticated-llm-agent-google-auth-oauthlib.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| OAuth Multi-LLM Orchestrator cryptography-google-auth-oauthlib-931267.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| objekts visual production router objekts-a2a-compat.onrender.com |
warn | 6 of 18 days | 0 of 18 days | no |
| objekts visual production router objekts-a2a.onrender.com |
warn | 6 of 18 days | 0 of 18 days | no |
| Observable Backend Stack Generator observable-backend-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Occultron occultron.app |
fail | 17 of 17 days | 0 of 17 days | no |
| OdileM2M api.odilelabs.com |
fail | 13 of 13 days | 0 of 13 days | no |
| onchain-risk-oracle oracle.evebrief.org |
fail | 15 of 18 days | 0 of 18 days | no |
| onyx-actions onyx-actions.onrender.com |
fail | 18 of 18 days | 0 of 18 days | no |
| Open Agent Polity open-agent-polity.politeia-agents.workers.dev |
pass | 18 of 18 days | 18 of 18 days | no |
| OpenAI Login and Token Agent authenticated-mcp-agent-bcrypt.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Opioid Treatment Directory opioidtreatment.fyi |
fail | 3 of 3 days | 0 of 3 days | no |
| Opplevagent opplevagent.no |
fail | 18 of 18 days | 0 of 18 days | unverifiable |
| Ops Control HQ Utility Agent tkoqkknsezxavtxfywkm.supabase.co |
fail | 18 of 18 days | 0 of 18 days | no |
| OptionsAhoy Equity Planner optionsahoy.com |
fail | 18 of 18 days | 0 of 18 days | no |
| Orbitwren by CyberMax orbitwren.cybermax-tools.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| OSIXBAY neo-collettive.onrender.com |
fail | 15 of 18 days | 0 of 18 days | no |
| OutageDesk Status Copy outagedesk-status.catalystdesk.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| overlayr overlayr.hatchagent.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| Overwatch Dominion data and EVM math dominion-data.x402-evm-math.workers.dev |
fail | 7 of 7 days | 0 of 7 days | no |
| Overwing overwing.ai |
warn | 18 of 18 days | 18 of 18 days | no |
| OVEXO Business Discovery Agent ovexo-a2a-discovery.miamidadewebdesigns18.workers.dev |
fail | 1 of 16 days | 0 of 16 days | no |
| OwlChart owlchart.com |
fail | 12 of 14 days | 0 of 14 days | no |
Check any agent yourself with the A2A Card check; a card found there joins this list from the next daily run.