# Webpage Text Change Detector

> Webpage Text Change Detector is a paid API for AI agents from 9dmb38pvlp8dr1d3rtfjpe934o.ingress.h4i-dedicated.eu-sw-2.digitalfrontier.so, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Detects meaningful text changes on a public webpage, returning normalized before/after evidence of what changed.

## Facts

- Endpoint: POST https://9dmb38pvlp8dr1d3rtfjpe934o.ingress.h4i-dedicated.eu-sw-2.digitalfrontier.so/api/seller/v4/public-data/webpage-change?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/webpage-text-change-detector-8b345b4f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MYSUw5UPAtXwSD2E7H14l

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 webpage-text-change-detector-8b345b4f -d '<json body>'
```

Example prompt: Check the Acme Corp pricing page at https://acmecorp.com/pricing for any meaningful text changes since my last check and show me exactly what was added or removed.

## When to prefer this

Choose this endpoint when you need to detect and surface meaningful text-level changes on a specific public webpage, especially when you want normalized before/after evidence rather than raw HTML diffs. Prefer this over generic scraping endpoints when your goal is change detection with structured diff output. It is well-suited for monitoring terms of service, pricing pages, public announcements, or regulatory pages where textual accuracy matters.

## Known failure modes

- Target URL is not publicly accessible or returns non-200 status
- Page uses heavy JavaScript rendering that prevents text extraction
- No prior baseline exists to compare against, so only a snapshot is captured
- Rate limiting or bot-detection on the target page blocks access
- URL points to non-HTML content (PDF, binary file) incompatible with text diffing
- Network timeout reaching the target URL

## How this service works

Detect meaningful text changes on a public webpage with normalized before/after evidence.

## Output

Returns a structured response indicating whether meaningful text changes were detected on the target webpage, along with normalized before and after text evidence showing exactly what changed, allowing the agent to understand the nature and scope of the content update.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/webpage-text-change-detector-8b345b4f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 9dmb38pvlp8dr1d3rtfjpe934o.ingress.h4i-dedicated.eu-sw-2.digitalfrontier.so](https://www.zero.xyz/host/9dmb38pvlp8dr1d3rtfjpe934o.ingress.h4i-dedicated.eu-sw-2.digitalfrontier.so/llms.txt)