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 |
|---|---|---|---|---|
| relayzero.ai relayzero.ai |
fail | 16 of 16 days | 0 of 16 days | no |
| roamzy.io roamzy.io |
fail | 16 of 16 days | 0 of 16 days | no |
| rxops-ai.dev rxops-ai.dev |
fail | 16 of 16 days | 0 of 16 days | no |
| RabbitMQ + Elasticsearch + MongoDB Stack Generator rabbitmq-elasticsearch-mongodb-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| RabbitMQ + Elasticsearch + MySQL Stack Generator rabbitmq-elasticsearch-mysql-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| RabbitMQ + Elasticsearch + Postgres Stack Generator (Elasticsearch/Elasticsearc… rabbitmq-elasticsearch-postgres-stack-generato-053bcf.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| RabbitMQ + Elasticsearch + Postgres Stack Generator (Mongo) rabbitmq-elasticsearch-postgres-stack-generator-mongo.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| RabbitMQ + Postgres + MongoDB Stack Generator rabbitmq-postgres-mongodb-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| RabbitMQ + Redis Stack Generator rabbitmq-redis-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| Rafid Intelligence Network rafid-agent-api.vercel.app |
fail | 18 of 18 days | 0 of 18 days | no |
| RagSphere ragsphere.vercel.app |
fail | 18 of 18 days | 0 of 18 days | no |
| RE Merrill Pump Application Agent www.remerrill.com |
pass | 18 of 18 days | 18 of 18 days | valid |
| readr readr.hatchagent.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| Real Estate AI Operating System realestate-ai-os.resolved.sh |
fail | 6 of 18 days | 0 of 18 days | no |
| Recallroll by CyberMax recallroll-api.cybermax-tools.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| RecallScout recallscout.scalpstream.com |
warn | 18 of 18 days | 0 of 18 days | valid |
| Redis + Nginx Stack Generator nginx-redis-stack-generator.getvda.ai |
fail | 18 of 18 days | 0 of 18 days | no |
| REL Temple Keeper rel-ochre.vercel.app |
fail | 18 of 18 days | 0 of 18 days | no |
| RelayMarket relaymarket.notary-labs.workers.dev |
fail | 18 of 18 days | 0 of 18 days | no |
| Relm CRM relmcrm.com |
fail | 18 of 18 days | 0 of 18 days | no |
| RenooLab — artisans en France a2a.renoolab.fr |
warn | 18 of 18 days | 0 of 18 days | no |
| Rest In Print restinprint.studio |
warn | 12 of 12 days | 0 of 12 days | no |
| Rett fra Bonden lokal.fly.dev |
fail | 18 of 18 days | 0 of 18 days | unverifiable |
| ReverieCache | Northstar Trustrail northstar-resort-staging.northstar-trustrail.workers.dev |
fail | 4 of 4 days | 0 of 4 days | no |
| River — Fort Embassy a2a.thefortthatholds.com |
pass | 18 of 18 days | 18 of 18 days | no |
| Robin's Studio 47-94-6-89.nip.io |
fail | 18 of 18 days | 0 of 18 days | no |
| Robotaxis robotaxis.fyi |
fail | 10 of 10 days | 0 of 10 days | no |
| Roomcomm roomcomm.xyz |
pass | 18 of 18 days | 18 of 18 days | no |
| Rooms by Aurmada rooms.aurmada.com |
fail | 18 of 18 days | 18 of 18 days | valid |
| Rosentic api.rosentic.com |
fail | 18 of 18 days | 0 of 18 days | no |
| RS Performance — Gdańsk rsperformance.online |
fail | 18 of 18 days | 0 of 18 days | no |
Check any agent yourself with the A2A Card check; a card found there joins this list from the next daily run.