Amazon Search Monitor — New Product Alerts (Vigia)

Monitor an Amazon search or category and get only NEW products since last check, with an entrant-velocity spike signal. Catch new competitors entering your niche. Charged only on new products, never per run. Ideal for e-commerce and market-intel agents.

What it does

Catch new products entering an Amazon search or category. You get only what changed since your last check — never a full re-dump to diff yourself.

Why Vigia — 5 advantages a raw scraper can't match

1. Charged only on real change. You pay for new products since the last check — a run where nothing changed costs $0. Raw scrapers bill every run or every row regardless.
2. Never billed on a failed source. The source check is charged only when the source actually responded. If it's down, you don't pay for our outage.
3. Append-only delta + spike signal. The first monitored run stores a free baseline; later runs deliver only what's new, plus a velocity-spike alert when volume suddenly surges (trend / review-bomb / hiring-surge).
4. Hard cost cap you control. Set maxTotalChargeUsd and the run can never bill above it — predictable spend, no surprise invoice.
5. Agent-ready output. Clean, normalized rows and a RUN_SUMMARY.json with ready-to-use signals — chainable from any MCP / A2A agent in one step.

Example input

{
  "searchUrls": [
    "https://www.amazon.com/s?k=standing+desk"
  ],
  "monitorEnabled": true,
  "maxTotalChargeUsd": 1.0
}

Set monitorEnabled: true so the first run stores a free baseline and later runs return only new results. Pin a monitorId to keep separate targets from sharing state.

Output

Each row is a normalized change record: record_id, query_id, title, url, author, published_at, score, text. A RUN_SUMMARY.json accompanies every run with the aggregated signal (counts, velocity spikes, trend).

How you're charged

• Product alert — billed once per new product since the last check.
• Source check ($0.12) — billed once per monitored target, only when the source responded. A failed source is free.
• A no-change run costs $0. Vigia never scrapes the source itself; it chains a licensed scraper, caps every call, and passes you only the delta.

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Part of the Vigia monitoring suite — change-only billing, outage-safe, agent-ready.