> ## Documentation Index
> Fetch the complete documentation index at: https://docs.rotastellar.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Constellation Pareto Frontier

> Computes the Pareto frontier across a constellation for multi-objective trade-off analysis

<Note>
  **Base URL:** `https://rotastellar-cae.subhadip-mitra.workers.dev`
  — No API key required. CORS-validated.
</Note>

<RequestExample>
  ```bash theme={null}
  curl -X POST https://rotastellar-cae.subhadip-mitra.workers.dev/v1/constellation/pareto \
    -H "Content-Type: application/json" \
    -H "Origin: https://rotastellar.com" \
    -d '{
      "fleet": [
        {
          "norad_id": "99901",
          "name": "RS-LEO-1",
          "role": "compute",
          "orbit": { "altitude_km": 550, "inclination_deg": 53 }
        },
        {
          "norad_id": "99902",
          "name": "RS-LEO-2",
          "role": "compute",
          "orbit": { "altitude_km": 550, "inclination_deg": 53 }
        }
      ],
      "preset_id": "split-learning"
    }'
  ```
</RequestExample>

<ResponseExample>
  ```json 200 OK theme={null}
  {
    "frontier": [
      {
        "satellite": "RS-LEO-1",
        "pareto": [
          { "ocu": 0.25, "latency_s": 120, "reliability": 0.99 },
          { "ocu": 0.50, "latency_s": 80, "reliability": 0.97 },
          { "ocu": 0.75, "latency_s": 55, "reliability": 0.94 }
        ]
      },
      {
        "satellite": "RS-LEO-2",
        "pareto": [
          { "ocu": 0.25, "latency_s": 125, "reliability": 0.99 },
          { "ocu": 0.50, "latency_s": 82, "reliability": 0.96 },
          { "ocu": 0.75, "latency_s": 58, "reliability": 0.93 }
        ]
      }
    ],
    "constellation_metrics": {
      "total_ocu": 1.50,
      "min_latency_s": 55,
      "avg_reliability": 0.963,
      "isl_overhead_s": 14
    }
  }
  ```
</ResponseExample>