# Microgram: drug-comparison

`station__algovigilance__microgram-drug-comparison` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Differential drug safety classification: compares two drug profiles by pre-computed signal ratio and PRR ratio to determine which has worse safety profile

## Agent metadata

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

## Input schema

- `signal_count_a` *number* (required) — Input variable signal_count_a
- `signal_count_b` *number* (required) — Input variable signal_count_b
- `signal_ratio` *number* (required) — signal_count_a / signal_count_b (999 if b=0 and a>0, 1.0 if both=0)
- `prr_ratio` *number* (required) — prr_max_a / prr_max_b (999 if b=0 and a>0, 1.0 if both=0)

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-drug-comparison",
    "arguments": {
      "signal_count_a": 0,
      "signal_count_b": 0,
      "signal_ratio": 0,
      "prr_ratio": 0
    }
  }
}
```

## Related

- [/tools](/tools) — all 7718 tools
- [/tools/algovigilance__microgram-drug-comparison](/tools/algovigilance__microgram-drug-comparison) — HTML page
- [/tools/algovigilance__microgram-drug-comparison/json](/tools/algovigilance__microgram-drug-comparison/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide