# Microgram: smm-fatal-screen

`station__algovigilance__microgram-smm-fatal-screen` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

First gate in SMM chain. Detects fatal violations and applies study-type-specific multipliers. Empirical fatal = FATAL_ZERO band (0.0 multiplier). Pre-empirical fatal = FATAL_FLOOR band (0.30 multiplier). No fatal = CLEAN. If study_type is null with fatal, defaults to pre-empirical path (conservative).

## Agent metadata

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

## Input schema

- `study_type` *string* — Input variable study_type
- `has_fatal_violation` *boolean* — Input variable has_fatal_violation

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-smm-fatal-screen",
    "arguments": {}
  }
}
```

## Related

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