Quick pre-flight quality score: composite (0-100) + grade (A-F) + three framework sub-scor

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xB40a687ca5483Ebc02F870348f6e08971Cae1308",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1000",
    "maxTimeoutSeconds": 300
  }
]

{
  "bazaar": {
    "category": "ai",
    "discoverable": true,
    "info": {
      "input": {
        "body": {
          "prompt": "Explain PQS scoring in one sentence to an AI agent operator.",
          "vertical": "general"
        },
        "bodyType": "json",
        "method": "POST",
        "pathParams": {},
        "type": "http"
      },
      "output": {
        "example": {
          "frameworks": {
            "geval": 6,
            "peem": 5.5,
            "ragas": 5.7
          },
          "grade": "C",
          "methodology_url": "https://promptqualityscore.com/blog/five-framework-synthesis?utm_source=pqs-grade&utm_medium=api&utm_campaign=2026-05-grade-launch",
          "score": 58,
          "upgrade_url": "https://promptqualityscore.com/pro?utm_source=pqs-grade&utm_medium=api&utm_campaign=2026-05-grade-launch",
          "verdict": "PEEM flags weak output format and role definition. Specify how the answer should be shaped and who is asking."
        },
        "type": "json"
      }
    },
    "routeTemplate": ":var1",
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "properties": {
                "prompt": {
                  "description": "Prompt text to grade (1-10000 chars)",
                  "maxLength": 10000,
                  "minLength": 1,
                  "type": "string"
                },
                "vertical": {
                  "default": "general",
                  "description": "Optional domain: software/content/business/education/science/crypto/general/research",
                  "enum": [
                    "software",
                    "content",
                    "business",
                    "education",
                    "science",
                    "crypto",
                    "general",
                    "research"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "prompt"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "pathParams": {
              "type": "object"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        },
        "output": {
          "properties": {
            "example": {
              "type": "object"
            },
            "type": {
              "type": "string"
            }
          },
          "required": [
            "type"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    },
    "tags": [
      "pqs-grade",
      "prompt-quality",
      "preflight",
      "scoring",
      "llm-tooling",
      "x402",
      "pqs"
    ]
  }
}

curl "https://promptqualityscore.com/api/pqs-grade"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

const res = await fetch("https://promptqualityscore.com/api/pqs-grade");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

import httpx
res = httpx.get("https://promptqualityscore.com/api/pqs-grade")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header