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.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9

Agent	Last check	Answered	Probe passed	Signed
lease.lonestaroracle.xyz lease.lonestaroracle.xyz	fail	16 of 16 days	0 of 16 days	no
Landing en 24h landingen24h.com	fail	11 of 11 days	0 of 11 days	no
Lane www.luminarylane.app	fail	18 of 18 days	0 of 18 days	no
LangChain Login and Token Agent authenticated-mcp-agent-langchain-core.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LangSmith Traced OpenAI Agent langchain-core-langchain-openai-l-736876.getvda.ai	fail	18 of 18 days	0 of 18 days	no
lastscanned lastscanned.com	warn	5 of 5 days	0 of 5 days	no
Launchfiles A2A launchfiles.app	fail	18 of 18 days	0 of 18 days	no
LeadProof Sales Agent leadproof.jessesay.chatgpt.site	fail	18 of 18 days	0 of 18 days	no
Leafmelt by CyberMax leafmelt.cybermax-tools.workers.dev	fail	18 of 18 days	0 of 18 days	no
LEGIT legit.gonna.bond	fail	8 of 18 days	0 of 18 days	no
liars.town liars.town	fail	2 of 18 days	0 of 18 days	no
Link Auditor links.hireanagent.dev	warn	18 of 18 days	0 of 18 days	no
Linkheft by CyberMax linkheft-api.cybermax-tools.workers.dev	fail	18 of 18 days	0 of 18 days	no
Liquid Agent: Money Tools for AI Agents api.liquidagent.ai	fail	18 of 18 days	0 of 18 days	no
Live Listing Proof live-listing-proof.mattskowronis.workers.dev	warn	18 of 18 days	18 of 18 days	no
LLM Observability & Orchestration Agent llm-observability-orchestration.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Observability & Orchestration Agent (Langchain Community) llm-observability-orchestration-agent-langchai-c1a755.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Observability & Orchestration Agent (Langchain) langchain-langchain-core-langsmit-d042fc.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent llm-orchestration-agent-d0a1a1.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Cryptography) llm-orchestration-agent-cryptography.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langchain Anthropic) llm-orchestration-agent-langchain-anthropic.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langchain Core) llm-orchestration-agent-langchain-core.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langchain Openai) llm-orchestration-agent-langchain-openai.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langchain) llm-orchestration-agent-langchain.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langgraph) llm-orchestration-agent-langgraph.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Langsmith) llm-orchestration-agent-langsmith.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Mcp) llm-orchestration-agent-mcp.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Openai) llm-orchestration-agent-openai.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Opentelemetry Api) llm-orchestration-agent-opentelemetry-api.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent (Opentelemetry Instrumentation Fastapi) llm-orchestration-agent-opentelemetry-instrume-a529e4.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent 2 llm-orchestration-agent-2-df5979.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent 5 llm-orchestration-agent-2.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Agent 5 llm-orchestration-agent-d2feb0.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration JWT Agent llm-orchestration-jwt-agent.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration MCP Agent llm-orchestration-mcp-agent.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Observability Agent llm-orchestration-observability-agent.getvda.ai	fail	18 of 18 days	0 of 18 days	no
LLM Orchestration Traced Agent llm-orchestration-traced-agent.getvda.ai	fail	18 of 18 days	0 of 18 days	no
llmrt llmrt-companion.manhliemcn4euwlu.workers.dev	warn	5 of 18 days	0 of 18 days	no
llmrt qdmbzzwftor2rgmxupyyasguhy.srv.us	warn	10 of 10 days	0 of 10 days	no
LocalMark Directory Agent localmark.ai	warn	18 of 18 days	18 of 18 days	no
Lockzone qevrulan.com	fail	18 of 18 days	0 of 18 days	no
Logolark by CyberMax logolark.cybermax-tools.workers.dev	fail	18 of 18 days	0 of 18 days	no
Loki66 Rendezvous loki66-agent-beacon.onrender.com	fail	0 of 18 days	0 of 18 days	no
Loppee a2a.loppee.com	warn	8 of 8 days	8 of 8 days	invalid
Lordevo Shop shop.lordevo.com	warn	5 of 5 days	0 of 5 days	no
Luana luana.dakotawilliams.net	fail	5 of 5 days	0 of 5 days	no
LUMEN B2B Agent lumen-zero-a2a.lumen-b2b.workers.dev	warn	18 of 18 days	18 of 18 days	no
Lumi Trades api.lumitrades.io	warn	10 of 10 days	10 of 10 days	no
LuxuryGarageBuilders luxurygaragebuilders.fyi	fail	3 of 3 days	0 of 3 days	no
LVL LTD Agent Skill Market 8802afac.lvlltd-skill-marketplace.pages.dev	warn	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.