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PQS: Prompt Quality Score – Cross-Model Compare (Solana x402)
x402
PQS: Prompt Quality Score – Cross-Model Compare (Solana x402) is a paid API for AI agents from api.relai.fi, paid per call via x402, $1.25/call, status unknown (last checked 2026-09-14).
Scores a prompt for quality across multiple AI models and verticals, returning a comparative quality assessment
Price / call$1.25
Success—
StatusUnknown
How this service works
Cross-model scoring (Solana x402)
Output
Returns a cross-model prompt quality score and comparative analysis for the given prompt, indicating how effective and well-formed the prompt is across different AI models within the specified vertical.
Example use cases
Example prompt
“Can you score this prompt for quality using PQS across models — 'Write a Python function that parses JSON and handles errors gracefully' — and use the software vertical?”
Technical details
Endpoint
GEThttps://api.relai.fi/relay/1779373065272/api/score/compare/solWhen to prefer
Use this endpoint when you need an objective, cross-model quality score for a prompt before deploying it, especially when optimizing prompts for specific verticals like software, content, research, or crypto. Prefer this over manual review or single-model evaluation when you want a comparative, multi-model perspective on prompt effectiveness.
Side effects
- Empty or missing prompt returns 400 validation error
- Prompt exceeding 10,000 characters returns length error
- Invalid vertical enum value returns schema validation error
- Payment not provided or insufficient (x402 payment required) returns 402
- Service unavailable returns 503
- Malformed request returns 400
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| prompt | string | Prompt to score |
| vertical | string |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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