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 |
|---|---|---|---|---|
| GAIP gaip-agent-to-art-prototype-production.up.railway.app |
warn | 18 of 18 days | 0 of 18 days | no |
| GanjaMon AI grokandmon.com |
fail | 18 of 18 days | 0 of 18 days | no |
| GetBody getbody.md |
warn | 18 of 18 days | 0 of 18 days | valid over the card as served, not the spec's form |
| GF Agent Toll gfpick-agent-api.vercel.app |
warn | 18 of 18 days | 2 of 18 days | invalid |
| Ghost — web search for agents, one x402 payment ghost-identity.ghost-agent-os.workers.dev |
warn | 17 of 18 days | 0 of 18 days | no |
| GhOsT77 ghost77-agent.onrender.com |
warn | 1 of 1 days | 1 of 1 days | no |
| GitDealFlow Signal Agent signals.gitdealflow.com |
fail | 18 of 18 days | 0 of 18 days | no |
| Glif glif.app |
fail | 18 of 18 days | 0 of 18 days | no |
| Global Database Agent a2a.globaldatabase.com |
pass | 18 of 18 days | 0 of 18 days | no |
| Gloria lucid.itsgloria.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Goce Petrov, brand designer agent.gocepetrov.com |
warn | 18 of 18 days | 18 of 18 days | no |
| Golden Cat Concierge golden-cat-network.bronkobologna.chatgpt.site |
warn | 18 of 18 days | 0 of 18 days | no |
| GoodAgent goodagent.144-217-89-210.sslip.io |
warn | 18 of 18 days | 0 of 18 days | no |
| Google OAuth Credential Service authenticated-llm-oauth-agent.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Google OAuth LangChain Agent google-auth-oauthlib-langchain-la-c1a755.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Google Sign-In Claude Agent authenticated-llm-agent-anthropic.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | unverifiable |
| Google Sign-In LangChain Agent google-auth-oauthlib-langchain-la-d46b90.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| GOSCE Portfolio Router router.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| GotSOL.app gotsol.app |
fail | 1 of 1 days | 0 of 1 days | no |
| GPUClouds gpuclouds.fyi |
fail | 3 of 3 days | 0 of 3 days | no |
| Graph Advocate graphadvocate.com |
fail | 18 of 18 days | 0 of 18 days | no |
| GRITH Gate grithland.com |
fail | 18 of 18 days | 18 of 18 days | valid |
| GroundTruth Field Evidence Agent groundtruth-oracle.vercel.app |
fail | 18 of 18 days | 0 of 18 days | no |
| geo.lonestaroracle.xyz geo.lonestaroracle.xyz |
fail | 16 of 16 days | 0 of 16 days | no |
| graphadvocate.com graphadvocate.com |
fail | 16 of 16 days | 0 of 16 days | no |
| grokandmon.com grokandmon.com |
fail | 16 of 16 days | 0 of 16 days | no |
| gsc-cpg.ai gsc-cpg.ai |
fail | 13 of 16 days | 0 of 16 days | no |
| gsc-radar.ai gsc-radar.ai |
fail | 12 of 16 days | 0 of 16 days | no |
| guildaidemo.talknicer.com guildaidemo.talknicer.com |
fail | 16 of 16 days | 0 of 16 days | no |
Check any agent yourself with the A2A Card check; a card found there joins this list from the next daily run.