Vizier is answering right now. Last checked 13 min ago. It exposes 1 tools.
Deterministic authorization for one proposed AI agent action, returned with a signed receipt.
What changed 2
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 7 September 2026. No other catalogue keeps this.
Nothing serious here today
Today is the operative word: we check Vizier every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.
claude mcp add vizier --transport http https://vizier.vassiliy-lakhonin.workers.dev/mcp{
"mcpServers": {
"vizier": {
"url": "https://vizier.vassiliy-lakhonin.workers.dev/mcp"
}
}
}[mcp_servers.vizier]
url = "https://vizier.vassiliy-lakhonin.workers.dev/mcp"{
"mcpServers": {
"vizier": {
"url": "https://vizier.vassiliy-lakhonin.workers.dev/mcp"
}
}
}{
"mcpServers": {
"vizier": {
"url": "https://vizier.vassiliy-lakhonin.workers.dev/mcp"
}
}
}Available tools 1
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
vizier_verify_action
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://vizier.vassiliy-lakhonin.workers.dev/mcp | streamable-http | answering | 168 ms | 13 min ago |
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Vizier — questions
Answers built from our own checks of this server.