# stall-row Price Check — x402 Listing Pricing Comps

> stall-row Price Check — x402 Listing Pricing Comps is a paid API for AI agents from stall-row-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-28).

Returns live pricing comparables from the CDP Bazaar catalog for an x402 route, including match count, price distribution, closest comparables, and a recommended listing price with rationale.

## Facts

- Endpoint: POST https://stall-row-production.up.railway.app/v1/price-check?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-28
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stall-row-price-check-x402-listing-pricing-comps-476d0a4b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VYgocFgSC_2E_DTvX5Enc

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 stall-row-price-check-x402-listing-pricing-comps-476d0a4b -d '<json body>'
```

Example prompt: I'm about to publish my x402 endpoint that transcribes audio files — can you check the Bazaar catalog for similar listings and tell me what I should charge? Use keywords 'audio transcription' and description 'converts audio to text'.

## When to prefer this

Use this endpoint when you operate or are about to launch an x402 route and need data-driven pricing guidance sourced from the live CDP Bazaar public catalog. Prefer this over manual research or guessing when you want a recommended price backed by real comparables and distribution data. It is ideal for initial price-setting, periodic repricing reviews, or competitive benchmarking against the live agent marketplace.

## Known failure modes

- No matching listings found in the Bazaar catalog — returns empty comparables and no recommended price
- Keywords too broad returning noisy/irrelevant comps — caller should refine keywords
- Bazaar catalog temporarily unavailable — returns service error
- Missing required input fields (keywords or description) — returns validation error
- Payment of $0.05 USDC not fulfilled — x402 payment required error

## How this service works

Pricing comps for an x402 listing, read live from the CDP Bazaar public catalog: how many resources match your keywords, their price distribution, the closest comparables, and a recommended listing price with its rationale. Use this when you operate an x402 route and are setting or changing its price.

## Output

Returns the number of Bazaar listings matching the provided keywords, a price distribution across those matches (e.g. min, median, max), the closest comparable listings with their details, and a recommended listing price with a plain-English rationale explaining why that price is appropriate given the competitive landscape.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "keywords": {
   "type": "string"
  },
  "description": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stall-row-price-check-x402-listing-pricing-comps-476d0a4b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stall-row-production.up.railway.app](https://www.zero.xyz/host/stall-row-production.up.railway.app/llms.txt)