Pricing

$0.01 / page comparison

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Website Change Detector & Diff API

Try for free

Detect page changes and deterministic diffs. Price: $0.01 per successful comparison.

Pricing

$0.01 / page comparison

Rating

0.0

(0)

Developer

Gavin Coates

Actor stats

Bookmarked

Total users

Monthly active users

an hour ago

Last modified

Price

$0.01 per successful page comparison using the page-comparison pay-per-event billing event.

A failed fetch or failed comparison does not produce the successful comparison event.

Examples:

1 comparison: $0.01
100 comparisons: $1.00
1,000 comparisons: $10.00

Good uses

website change detector
price-page monitoring
stock or availability changes
documentation changes
policy or terms changes
competitor-page monitoring
compact hash-based change checks
deterministic text diffs

Input

Baseline:

{
  "url": "https://example.com/"
}

Hash comparison:

{
  "url": "https://example.com/",
  "previous_hash": "previous-current-hash",
  "include_current_text": false
}

Detailed text comparison:

{
  "url": "https://example.com/",
  "previous_text": "previous normalized text",
  "selector": "main",
  "ignore_selectors": [".clock", ".rotating-banner"]
}

Output

Results can include changed, comparison_status, current_hash, normalized text, added/removed excerpts, change ratio, HTTP metadata, title, final URL, and fetch timing.

Comparison behavior

baseline: no previous text/hash was supplied.
hash: compact changed/unchanged comparison.
text: deterministic text-diff comparison.
Keep selector, ignore selectors, and text-length settings consistent between repeated checks.

Limits and security

public HTTP/HTTPS only
private/local/link-local/reserved targets blocked
redirect targets revalidated
response size bounded
request timeout bounded
static HTTP content only; client-side JavaScript is not executed

MCP

The Actor is available through Apify's hosted MCP server and the Industrial Platform MCP portfolio. Its required input is url.

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