# Boring API – Supplier Price List Comparison

> Boring API – Supplier Price List Comparison is a paid API for AI agents from api.relaex-engineers.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-10).

Compares two versions of a supplier price list (CSV, XLSX, or PDF) and returns a deterministic diff with confidence scoring

## Facts

- Endpoint: POST https://api.relaex-engineers.de/v1/supplier/compare?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-10
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/boring-api-supplier-price-list-comparison-5ea1fe58
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dD7IIquDHZQsPeeNs1Qft

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 boring-api-supplier-price-list-comparison-5ea1fe58 -d '<json body>'
```

Example prompt: Compare my supplier's old price list at https://example.com/prices_v1.xlsx with the new one at https://example.com/prices_v2.xlsx and tell me what prices changed, what's new, and what was removed.

## When to prefer this

Choose this endpoint when you need a deterministic, structured comparison of two supplier price list files (CSV, XLSX, or PDF) and need reliable confidence scoring on the result. It is especially well-suited for procurement automation, ERP integration, and regular monitoring of supplier pricing changes without manual spreadsheet review. Prefer it over general-purpose document diffing tools when the context is specifically supplier or product pricing data.

## Known failure modes

- Inaccessible URL — if either file URL is not publicly reachable, the request will fail with an error
- Unsupported file format — only CSV, XLSX, and PDF are supported; other formats will be rejected
- Unparseable file — highly irregular or scanned/image-only PDFs may yield low-confidence or empty results
- Mismatched schemas — if old and new files have very different column structures, matching confidence may be low
- Malformed options JSON — if the options field contains invalid JSON, the request will return an error

## How this service works

Deterministic analysis APIs and MCP tools: supplier
price list comparison, PDF table extraction, product feed validation, product data mapping.

## Output

A JSON object containing a structured comparison result with all detected differences between the two price lists, a success status, and a confidence level (e.g. 'high') indicating how reliably the files were parsed and matched.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "options": {
   "type": "string",
   "description": "Optional options as a JSON string; schema under /v1/schemas/"
  },
  "new_file_url": {
   "type": "string",
   "description": "Public URL of the new version"
  },
  "old_file_url": {
   "type": "string",
   "description": "Public URL of the old version (CSV, XLSX or PDF)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "status": "success",
  "confidence": {
   "level": "high"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/boring-api-supplier-price-list-comparison-5ea1fe58/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.relaex-engineers.de](https://www.zero.xyz/host/api.relaex-engineers.de/llms.txt)