# Services from promptqualityscore.com on Zero

> promptqualityscore.com serves 9 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/promptqualityscore.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/promptqualityscore.com/health.json

## Services

- [PQS Prompt Injection Detection & Sanitizer](https://www.zero.xyz/c/promptqualityscore-com-6c69a122/llms.txt): $0.025/call via x402. Detects prompt-injection attempts in a given prompt using heuristic and/or LLM-based analysis, returns a confidence score, injection pattern classification, and a sanitized version of the prompt.
- [PQS /api/score — 8-Dimension Prompt Quality Scorer](https://www.zero.xyz/c/promptqualityscore-com-fc9e687f/llms.txt): $0.025/call via x402. Scores a prompt across 8 dimensions (clarity, context, examples, constraints, specificity, chain-of-thought structure, output format, role definition) with a grade, percentile, and top 3 actionable fixes
- [PQS Full Prompt Score with Optimized Rewrite](https://www.zero.xyz/c/pqs-full-prompt-score-with-optimized-rewrite-5f4efa20/llms.txt): $0.125/call via x402. Scores an AI prompt across 8 quality dimensions, returns a grade with sub-scores, and delivers an optimized rewritten version with explanation.
- [PQS - Prompt Quality Score via Venice.ai](https://www.zero.xyz/c/pqs-prompt-quality-score-via-venice-ai-394aa43f/llms.txt): $0.05/call via x402. Scores an AI prompt across 8 quality dimensions, returns a grade and fixed version by proxying through Venice.ai inference
- [PromptQualityScore Variants API](https://www.zero.xyz/c/promptqualityscore-com-20348645/llms.txt): $0.1/call via x402. Generates N ranked prompt rewrites scored on an 8-dimension rubric, returned best-first with delta vs. baseline
- [PQS Compare - Head-to-Head Prompt Scoring Across Models](https://www.zero.xyz/c/pqs-compare-head-to-head-prompt-scoring-across-models-83e2f4b1/llms.txt): $1.25/call via x402. Scores a prompt against 8 quality dimensions, runs it through multiple LLMs (GPT-4o and Claude), compares outputs with scores, and returns an optimized prompt with a winner verdict.
- [PromptQualityScore Batch Scoring](https://www.zero.xyz/c/promptqualityscore-com-7206fd13/llms.txt): $0.25/call via x402. Scores up to 10 prompts in a single batch request using an 8-dimensional quality rubric across multiple frameworks
- [PromptQualityScore Preflight Check](https://www.zero.xyz/c/promptqualityscore-com-4a94b2c8/llms.txt): $0.05/call via x402. Runs a quick pass/fail pre-flight check on a prompt's quality and optionally validates an endpoint's on-chain trust signals before committing to a paid LLM call.
- [PQS Grade — Prompt Quality Quick Score](https://www.zero.xyz/c/promptqualityscore-com-42826a44/llms.txt): $0.001/call via x402. Scores a prompt text with a composite 0-100 score, A-F letter grade, three framework sub-scores (PEEM, RAGAS, G-Eval), and a pass/fail verdict for use as a cheap pre-flight filter before expensive LLM calls

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)