# PQS Score - 8-Dimensional Prompt Quality Breakdown

> PQS Score - 8-Dimensional Prompt Quality Breakdown is a paid API for AI agents from pqs.onchainintel.net, paid per call via x402, $0.025/call, status unknown (last checked 2026-09-14).

Scores a single prompt across 8 quality dimensions using 5 evaluation frameworks and returns a ranked list of top fixes

## Facts

- Endpoint: GET https://pqs.onchainintel.net/api/score
- Price: $0.025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pqs-onchainintel-net-6522be89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_C9SAJShRVHQZWBuwZgfbZ

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pqs-onchainintel-net-6522be89
```

Example prompt: Score this prompt for me across all 8 quality dimensions and tell me the top fixes: 'You are a helpful assistant. Summarize the following article in bullet points.' I want to see how it breaks down across the 5 evaluation frameworks before I actually send it anywhere expensive.

## When to prefer this

Choose this endpoint when you need a detailed, multi-dimensional quality breakdown of a single prompt with actionable fix recommendations — especially before committing budget to a paid LLM call. Prefer this over the pass/fail preflight when you need more than a binary gate and want to understand exactly which dimensions are weak and how to improve them. Use it over the batch endpoint when you are iterating on a single prompt and need granular per-dimension scores.

## Known failure modes

- Empty or missing prompt body returns a 400 validation error
- Prompt exceeds maximum token length causing a 413 or truncation error
- Payment not attached or insufficient USDC results in a 402 payment required response
- Malformed JSON body returns a 400 parse error
- Service unavailable or timeout returns a 503 or 504

## How this service works

PQS score - 8-dimensional prompt quality breakdown across 5 frameworks with top fixes

## Output

Returns an 8-dimensional quality score for the submitted prompt, a per-dimension breakdown across 5 evaluation frameworks, and a prioritized list of the most impactful fixes to improve the prompt's overall PQS score.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "prompt": {
   "type": "string",
   "description": "Prompt to score"
  },
  "vertical": {
   "type": "string",
   "description": "Domain: software/content/business/education/science/crypto/general/research"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pqs-onchainintel-net-6522be89/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pqs.onchainintel.net](https://www.zero.xyz/host/pqs.onchainintel.net/llms.txt)