# Microgram: kvl-loop-conservation

`station__algovigilance__microgram-kvl-loop-conservation` · native (always callable) · domain `algovigilance` · pv-relevance `pv-core`

Kirchhoff's Voltage Law analog for chain loops — verify that confidence/severity does not amplify across loop iterations without new evidence input. In circuit theory, voltage drops around a loop sum to zero. In chain loops, verdict strength must be conserved unless new data enters.

## Agent metadata

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

## Input schema

- `confidence_before` *number* (required) — Verdict confidence at loop iteration N-1 (0.0-1.0)
- `confidence_after` *number* (required) — Verdict confidence at loop iteration N (0.0-1.0)
- `new_evidence_fields` *number* — Number of new input fields added between iterations (0 = no new data)
- `iteration` *number* — Current loop iteration number

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-kvl-loop-conservation",
    "arguments": {
      "confidence_before": 0,
      "confidence_after": 0
    }
  }
}
```

## Related

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