# Microgram: compatibility-predictor

`station__algovigilance__microgram-compatibility-predictor` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Compatibility Predictor: predicts whether two micrograms will be cross-compatible based on empirical matrix findings. Encodes three discovered laws: (1) Complementarity — different operators predict higher compatibility, (2) Family affinity — same name family predicts compatibility, (3) Size asymmetry — different tree sizes predict compatibility. Derived from 2,047,657-run matrix analysis across 433 micrograms.

## Agent metadata

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

## Input schema

- `operator_a` *string* (required) — Dominant operator of microgram A (gt, gte, lt, lte, eq, contains, is_null, is_not_null, matches, none)
- `operator_b` *string* (required) — Dominant operator of microgram B
- `family_a` *string* — Name family prefix of microgram A (e.g., ab, adapt, signal)
- `family_b` *string* — Name family prefix of microgram B
- `size_a` *number* — Node count of microgram A
- `size_b` *number* — Node count of microgram B

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-compatibility-predictor",
    "arguments": {
      "operator_a": "",
      "operator_b": ""
    }
  }
}
```

## Related

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