# run-elastic-equilibrium

`station__microgram__run-elastic-equilibrium` · external (needs EXECUTION_BACKEND_URL configured) · domain `microgram` · pv-relevance `pv-core`

Flywheel material elastic equilibrium classifier. FATIGUE_FAILURE_IMMINENT (cycles > limit, takes priority), YIELD_EXCEEDED (stress >= yield_point), NOMINAL (within elastic range). Requires pre-computed fatigue_exceeded (1=exceeded, 0=ok) and stress_exceeded (1=at-or-above-yield, 0=ok).

> **Note:** This tool routes through an external execution backend. If `EXECUTION_BACKEND_URL` is unset on the server, calls return JSON-RPC error `-32603 "Tool execution backend not configured"`. Tools with `backend: native` execute in-process and are always callable.

## Agent metadata

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

## Input schema

- `fatigue_cycles` *integer* (required) — Input parameter: fatigue_cycles
- `stress` *number* (required) — Input parameter: stress
- `stress_exceeded` *integer* (required) — Input parameter: stress_exceeded
- `yield_point` *number* (required) — Input parameter: yield_point
- `fatigue_exceeded` *integer* (required) — Input parameter: fatigue_exceeded
- `fatigue_limit` *integer* (required) — Input parameter: fatigue_limit

## Example call

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

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "station__microgram__run-elastic-equilibrium",
    "arguments": {
      "fatigue_cycles": 0,
      "stress": 0,
      "stress_exceeded": 0,
      "yield_point": 0,
      "fatigue_exceeded": 0,
      "fatigue_limit": 0
    }
  }
}
```

## Related

- [/tools](/tools) — all 3062 tools
- [/tools/microgram__run-elastic-equilibrium](/tools/microgram__run-elastic-equilibrium) — HTML page
- [/tools/microgram__run-elastic-equilibrium/json](/tools/microgram__run-elastic-equilibrium/json) — JSON form (agent-friendly)
- [/api/mcp](/api/mcp) — endpoint
- [/AGENTS.md](/AGENTS.md) — agent guide