# causality-rucam

`station__agent-intel__causality-rucam` · external (needs EXECUTION_BACKEND_URL configured) · domain `agent-intel` · pv-relevance `non-pv`

Score range: -4 to +14.

> **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

- `age` *integer* (required) — Patient age in years
- `alcohol` *boolean* (required)
- `alternative_causes` *object* (required)
- `concomitant_drugs` *object* (required)
- `drug_withdrawn` *boolean* (required)
- `percentage_decrease` *number* — Percentage decrease in liver values after withdrawal (0-100)
- `pregnancy` *boolean* (required)
- `previous_hepatotoxicity` *object* (required)
- `reaction_type` *object* (required) — Type of liver reaction pattern
- `rechallenge_performed` *boolean* (required)
- `rechallenge_result` *object* — Result of rechallenge (omit if not performed)
- `time_to_improvement` *integer* — Days from withdrawal to improvement (omit if not withdrawn)
- `time_to_onset` *integer* (required) — Days from drug start to reaction onset

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__agent-intel__causality-rucam",
    "arguments": {
      "age": 0,
      "alcohol": false,
      "alternative_causes": {},
      "concomitant_drugs": {},
      "drug_withdrawn": false,
      "pregnancy": false,
      "previous_hepatotoxicity": {},
      "reaction_type": {},
      "rechallenge_performed": false,
      "time_to_onset": 0
    }
  }
}
```

## Related

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