Archived web page diffs for monitoring agents

Send a URL and two dates. PageDiff finds the closest usable Wayback snapshots, extracts readable page text, and returns structured added, removed, and modified blocks for pricing, policy, docs, staff, and competitor-page monitoring.

Explore Schema

EndpointPOST /diff

Price$0.050 USDC

NetworkBase EIP-155:8453

Wallet0x4a82F1...56E85bFE

x402 Settlements0 Succeeded

Pricing monitors

Catch plan, limit, and packaging changes between archived versions of a pricing page.

Policy watchers

Compare terms, privacy, docs, and compliance pages without setting up an account.

Competitor research

Track product catalog, positioning, hiring, and staff-page changes over time.

Payment Challenge Inspector

URL

From Date

To Date

Challenge Output

Click "Fetch Unpaid Challenge" to inspect the x402 payment requirements for /diff.

Integration

Protocol standard: Submit a JSON request to /diff. Without payment, the API returns HTTP 402 and a standard x402 payment challenge. A wallet or facilitator signs the payment payload and retries with X-Payment.