# Microgram: entropy-compute

`station__algovigilance__microgram-entropy-compute` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Compute information-theoretic entropy measures. Modes: shannon (H), cross (H_cross), kl (D_KL), mutual (MI), normalized (H_norm), conditional (H_Y|X). Supports from_counts for raw integers.

## Agent metadata

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

## Input schema

- `mode` *string* (required) — shannon, cross, kl, mutual, normalized, or conditional
- `distribution_p` *object* (required) — Primary probability distribution or counts
- `distribution_q` *object* — Secondary distribution (required for cross, kl)
- `joint_rows` *number* — Row count for joint matrix (required for mutual, conditional)
- `base` *string* — Log base: bits (default), nats, hartleys
- `from_counts` *boolean* — If true, normalize raw counts to probabilities

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-entropy-compute",
    "arguments": {
      "mode": "",
      "distribution_p": {}
    }
  }
}
```

## Related

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