listClusters

Returns the caller org's clusters from both sources: the managed clusters projected from Visor's node pools, and the BYO clusters attached to the caller's project. A Visor outage costs the managed half only — the BYO half still lists, because a page that 502s on an optional provider is worse than a page that shows what it can.

Arguments

This tool declares no arguments. Call it with an empty arguments object.

Call it

A tools/call carries its arguments in one flat object. This tool declares none, so the object is empty.

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "listClusters",
         "arguments": {}
       }
     }'

tools/list needs no credential; tools/call does — called without one the door answers HTTP 200 with a JSON-RPC result whose isError is set and whose text says what was missing. How to get a key →

The operation behind it

The same capability over plain HTTP is in the clusters API reference, on https://api.hanzo.ai.

All 755 tools · The door · API reference

Generated from tools/list on https://api.hanzo.ai/v1/mcp — 833 tools captured 2026-08-01, of which 755 are documented here (the operator surface is not published) (this build read the vendored copy; the door was unreachable).