Academic Letter Grade with Red-Pen Marginalia

{
  "input": {
    "body": {
      "target": "The quick brown fox jumps over the lazy dog. This sentence demonstrates all letters of the English alphabet in a single, coherent statement. It is commonly used for testing typewriters and fonts."
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  }
}

{
  "summary": "You've correctly identified and explained a pangram with accurate supporting information. The writing is clear and grammatically sound, hitting all the factual marks. However, the submission plays it entirely by the book—there's no original observation, no creative angle, no deeper question about *why* this particular sentence endures. It's the kind of answer that would score well on a quiz but wouldn't make anyone think twice. Add a perspective, an example, a counterpoint, or a tangent, and you'd have something memorable.",
  "marginalia": [
    "Textbook definition of 'pangram'—you nailed the what but skipped the why.",
    "Nice structure, but where's the insight? This reads like Wikipedia.",
    "Lazy dog reference is ironic; your analysis could use more energy.",
    "Good historical context. Show us *how* it's used, not just that it is.",
    "Competent but safe. You're describing, not exploring."
  ],
  "letter_grade": "B"
}