# vigil-presence-gate

`station__vigil-governor__vigil-presence-gate` · external (needs EXECUTION_BACKEND_URL configured) · domain `vigil-governor` · pv-relevance `pv-core`

Run the vigil-presence-gate microgram — decides allow | confirm | block for a proposed operation given operator presence and action class. Gates irreversible and destructive operations when the operator is absent or sensors are degraded.

> **Note:** This tool routes through an external execution backend. If `EXECUTION_BACKEND_URL` is unset on the server, calls return JSON-RPC error `-32603 "Tool execution backend not configured"`. Tools with `backend: native` execute in-process and are always callable.

## Agent metadata

- `idempotent`: unknown
- `read_only`: unknown
- `expected_latency_ms`: unknown (not yet contract-tested)
- `cost_tokens_estimate`: unknown

## Input schema

- `presence` *string* (required) — EMPTY | NEARBY | OCCUPIED
- `sensors_online` *integer* (required)
- `action_class` *string* (required) — reversible | irreversible | destructive

## Example call

```json
POST /api/mcp
Content-Type: application/json

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__vigil-governor__vigil-presence-gate",
    "arguments": {
      "presence": "",
      "sensors_online": 0,
      "action_class": ""
    }
  }
}
```

## Related

- [/tools](/tools) — all 3062 tools
- [/tools/vigil-governor__vigil-presence-gate](/tools/vigil-governor__vigil-presence-gate) — HTML page
- [/tools/vigil-governor__vigil-presence-gate/json](/tools/vigil-governor__vigil-presence-gate/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide