# Microgram: conservation-checker

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

Validates primitive compositions against the conservation law ∃ = ∂(×(ς, ∅)). Routes compositions through existence, boundary, state, and void checks. Exercises the × (Product) axiomatic operator.

## Agent metadata

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

## Input schema

- `has_existence` *boolean* (required) — Input variable has_existence
- `has_boundary` *boolean* (required) — Input variable has_boundary
- `has_state` *boolean* (required) — Input variable has_state
- `has_void` *boolean* (required) — Input variable has_void
- `primitive_count` *number* — Input variable primitive_count
- `composition_tier` *string* — Input variable composition_tier

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__algovigilance__microgram-conservation-checker",
    "arguments": {
      "has_existence": false,
      "has_boundary": false,
      "has_state": false,
      "has_void": false
    }
  }
}
```

## Related

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