# Microgram: trial-trial-power-analysis

`station__algovigilance__microgram-trial-trial-power-analysis` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Compute per-arm sample size for the specified test type.

## Agent metadata

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

## Input schema

- `alpha` *number* (required) — Input parameter alpha.
- `effect_size` *number* — Input parameter effect_size.
- `event_prob` *number* — Input parameter event_prob.
- `hazard_ratio` *number* — Input parameter hazard_ratio.
- `p1` *number* — Input parameter p1.
- `p2` *number* — Input parameter p2.
- `power` *number* (required) — Input parameter power.
- `test_type` *string* (required) — Test type: "two_proportion" | "two_mean" | "survival"

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-trial-trial-power-analysis",
    "arguments": {
      "alpha": 0,
      "power": 0,
      "test_type": ""
    }
  }
}
```

## Related

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