# pv-who-umc-quick

`station__pv-compute__pv-who-umc-quick` · external (needs EXECUTION_BACKEND_URL configured) · domain `pv-compute` · pv-relevance `pv-core`

WHO-UMC causality assessment

> **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

- `alternatives` *integer* (required) — Alternative causes exist: 1=yes, -1=no, 0=unknown
- `dechallenge` *integer* (required) — Improved after withdrawal: 1=yes, 0=unknown, -1=no
- `plausibility` *integer* (required) — Pharmacological plausibility: 1=yes, 0=unknown, -1=no
- `rechallenge` *integer* (required) — Recurred on re-exposure: 1=yes, 0=unknown, -1=no
- `temporal` *integer* (required) — Temporal relationship: 1=yes, 0=unknown, -1=no

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__pv-compute__pv-who-umc-quick",
    "arguments": {
      "alternatives": 0,
      "dechallenge": 0,
      "plausibility": 0,
      "rechallenge": 0,
      "temporal": 0
    }
  }
}
```

## Related

- [/tools](/tools) — all 3062 tools
- [/tools/pv-compute__pv-who-umc-quick](/tools/pv-compute__pv-who-umc-quick) — HTML page
- [/tools/pv-compute__pv-who-umc-quick/json](/tools/pv-compute__pv-who-umc-quick/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide