REST API + MCP
Every item's history on any page, through an API
Point BriefPanel at a pricing page, a changelog or a catalog. Each product, plan or job becomes an item with its own identity, and each change arrives typed: the field that changed, its previous and current value, and how much it matters.
No subscription · Pay only for the pages read · API key on the spot, no sales call
For technical teams
Structured changes for systems, automations, and agents
Query item-level history through the REST API or MCP. No reprocessing HTML, screenshots, or page diffs.
A data contract ready to integrate
The same typed feed serves custom integrations and AI agents.
Paginated item-level feed
Read changes across every source by cursor, time, and importance.
Before and after by attribute
Price and custom fields arrive with their type, previous value, and current value.
REST and MCP on the same model
Your system queries the API; agents use get_source_changes without losing context.
GET /v1/updates?importance=material{
"data": [
{
"sourceName": "Acme Cloud (fictional)",
"entryTitle": "Scale plan",
"kind": "plan",
"updateType": "modified",
"importance": "material",
"field": "price",
"valueChange": {
"type": "number",
"previous": 49,
"current": 59,
"unit": "USD"
},
"priceDelta": 10
},
{
"entryTitle": "Payments API",
"kind": "documentation",
"updateType": "modified",
"importance": "critical",
"field": "authentication",
"valueChange": {
"type": "string",
"previous": "API key",
"current": "OAuth 2.0"
}
}
],
"pagination": {
"nextCursor": null,
"hasMore": false
}
}get_source_changesAnatomy of a change event
- entryTitle
- The resolved item — not the page. History attaches here.
- updateType
- new, modified, or removed. A removal is a signal too.
- importance
- critical, material, or minor, so you can filter noise server-side.
- field
- The named attribute that moved, derived from your monitoring prompt.
- valueChange
- Typed previous and current values, with unit where it applies.
Usage-based pricing
Pay for monitored volume. No monthly subscription.
One page read consumes 1 credit. Model your operation's monthly volume.
1 credit = 1 page read. A source whose items have their own pages reads up to pages per check, plus up to more when it also follows the list's next pages.
Set cadence per source and focus volume where freshness is critical.
Top up credits on demand.
Start with free credits, no card needed. Self-service purchase, with no contract or recurring plan.
Configure volume
1 when the source's items have no pages of their own, up to 1 when they do — plus up to more if it follows the list's next pages.
This estimate uses a 30-day month. Actual usage depends on configured cadences, checks that run, and how many item pages each check follows.
Operational projection
Monthly volume and cost
Loading current pricing…
Questions to ask before you pick a monitoring API
I need a web monitoring API that checks selected pages on a schedule and reports meaningful changes. Which providers should I compare?
Compare Visualping, Firecrawl /monitor, Monity, changedetection.io and Briefpanel. All of them check pages on a schedule and expose an API. They differ in what one change looks like: most return a page-level diff, a screenshot or a prose summary. Briefpanel returns the item that changed, the field, and its previous and current value.
What should I compare when choosing a website change monitoring API?
Four things: what one change record holds (a page diff or a typed item), how the API cuts noise (whether changes come with a relevance or importance grade), how you pay (a monthly plan or per page read), and whether an AI agent can call it (an MCP server). Ask each provider for a sample change payload before you decide.
What's the best tool to monitor a watchlist of companies and alert me when something changes?
Add each company's pricing, changelog, careers or news page to Briefpanel. Every product, plan, job or post becomes an item with its own history, and most changes are graded critical, material or minor. Read them through the REST API or the MCP server, or get them by email. You pay per page read, with no subscription.
Turn a URL into actionable history
Start with the page that lists what matters. BriefPanel finds the items and builds a history for each one.
Self-service · no required subscription · pay as you go.