{"mode":"preview","message":"This endpoint is POST-only with payment. The example_response below shows what a successful POST returns.","example_response":{"pqs_version":"2.0","batch_size":2,"results":[{"prompt":"Explain PQS scoring in one sentence to an AI agent operator.","vertical":"general","score":46,"out_of":80,"grade":"C","dimensions":{"clarity":7,"specificity":6,"context":6,"constraints":5,"output_format":7,"role_definition":5,"examples":4,"cot_structure":6,"total":46},"top_fixes":["Specify the exact output format you want (bullets, JSON, prose).","Name the target reader or persona explicitly.","Add one concrete example of the ideal response."]},{"prompt":"Summarize this trade: BTC 0.4 at 63100.","vertical":"crypto","score":39,"out_of":80,"grade":"D","dimensions":{"clarity":6,"specificity":4,"context":4,"constraints":5,"output_format":7,"role_definition":5,"examples":4,"cot_structure":6,"total":39},"top_fixes":["State the output format (one-liner, table, or bullet list).","Name the audience (trader, PM, retail investor).","Add the desired depth (one sentence, one paragraph, or analysis)."]}],"summary":{"total_scored":2,"avg_score":42.5,"avg_out_of":80,"lowest_grade":"D","highest_score":46,"lowest_score":39},"powered_by":"PQS - promptqualityscore.com"},"upgrade":"POST /api/score/batch with x402 payment ($0.25 USDC on Base) and body { prompts: [...] } (1-10 items, each a string or { prompt, vertical } object) for batch 8-dimension scoring.","try_free":"POST /api/score/free with body { prompt, vertical } for unauthenticated 5/min real scoring.","powered_by":"PQS - promptqualityscore.com"}