# Services from pqs.onchainintel.net on Zero

> pqs.onchainintel.net serves 5 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/pqs.onchainintel.net
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/pqs.onchainintel.net/health.json

## Services

- [PQS Preflight – Prompt Quality & Endpoint Trust Check](https://www.zero.xyz/c/pqs-onchainintel-net-4711170a/llms.txt): $0.05/call via x402. Scores a prompt against an 8-dimension quality rubric (pass/fail at 28/80) and optionally retrieves on-chain trust signals for a target endpoint URL before committing to a paid LLM call.
- [PQS Batch Prompt Quality Scoring](https://www.zero.xyz/c/pqs-onchainintel-net-0def59d8/llms.txt): $0.25/call via x402. Scores up to 10 prompts in a single API call across 8 quality dimensions, returning structured quality breakdowns and improvement suggestions for each.
- [PQS Score - 8-Dimensional Prompt Quality Breakdown](https://www.zero.xyz/c/pqs-onchainintel-net-6522be89/llms.txt): $0.025/call via x402. Scores a single prompt across 8 quality dimensions using 5 evaluation frameworks and returns a ranked list of top fixes
- [PQS Cross-Model Scoring: Claude vs GPT-4o Comparison](https://www.zero.xyz/c/pqs-onchainintel-net-a370506f/llms.txt): $1.25/call via x402. Runs the same prompt through both Claude and GPT-4o and uses a third model as judge to score and compare the outputs
- [PQS Full Analysis - Prompt Quality Score with Before/After Outputs](https://www.zero.xyz/c/pqs-onchainintel-net-f13253af/llms.txt): $0.125/call via x402. Runs a full 8-dimensional prompt quality analysis returning the optimized prompt plus before/after LLM outputs to show the improvement

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)