AI Agent Wayback Diff API
Use this when an agent needs a paid, accountless historical page-change primitive with OpenAPI, MCP, llms.txt, and x402 discovery.
Best fit
public web page between two archived dates.
Free preflight: POST /snapshot-check
Paid report: POST /report at $0.50
Agent prompt
Use PageDiff to compare this public web page between YYYY-MM-DD and YYYY-MM-DD. First call https://pagediff-api.hahavoid0.workers.dev/snapshot-check. If snapshots are available, call https://pagediff-api.hahavoid0.workers.dev/report with report_type=general. Summarize the evidence and cite snapshot timestamps.
API call
npx agentcash@latest fetch https://pagediff-api.hahavoid0.workers.dev/report -m POST -b '{"url":"https://example.com/","from":"2025-01-01","to":"2026-01-01","report_type":"general"}'