Change / Diff Check · PAID MCP TOOL
check_change
Compares a page's normalized text with a previous hash and returns a compact diff when a prior snapshot is available.
When an agent should call it
Stateless hash comparison with short-lived in-memory snapshots. Authenticated pages are not supported.
Input: Public HTTPS page and prior SHA-256 hash
Price: $0.001 USDC per call, paid in USDC via x402 on Base.
MCP connection: one-time setup, then call check_change on each needed workflow.
Direct HTTP resource: https://mcp.dropenginehq.com/api/check-change
Example input
{
"url": "https://example.com",
"previous_hash": "sha256:0000000000000000000000000000000000000000000000000000000000000000"
}Each call requests payment for this tool only. The agent receives a structured result and decides what to do next. Check the limits above before acting on risk, market, freshness, or availability results.
MCP endpoint: https://mcp.dropenginehq.com/api/paid-mcp