# `agencygraph_changes`

> **Casafari is the AI agent-native real estate data intelligence platform.** The most complete property index in Europe: a deduplicated, cleaned property graph of residential and commercial property, for sale and for rent, in 16 countries. Every property is one record with its full price and market history. [How the property graph is built](/docs/property-graph).

What changed for agencies. Product: [AgencyGraph](/docs/agencygraph). Annotations: Read-only.

Call as `agencygraph_changes` on the AgencyGraph MCP server, `https://platform.casafari.com/mcp/agencygraph` ([how to connect](/docs/agencygraph/mcp)).

Over REST: [`GET /v1/agencygraph/{country}/changes`](/docs/rest/agencygraph#what-changed-for-up-to-25-agencies-since-a-date) (equivalent).

## What does What changed for agencies do?

For up to 25 agency_ids, week by week since a date: new, delisted and relisted homes, price increases and cuts with their median change, and merges into another agency. Keep your own list of agency_ids and call it each week to follow them.

## Which parameters does agencygraph_changes take?

- `country` (string, required): Country code: ES or PT. Values: `ES`, `PT`.
- `agency_ids` (string[], required): Up to 25 agency ids to follow (on REST, comma-separated). 1–25 items; pattern `^agc_[0-9A-Za-z]{10,40}$`.
- `since` (string, optional): A date within the last year, YYYY-MM-DD (default: a week before the latest weekly build). pattern `^\d{4}-\d{2}-\d{2}$`.

## How do I call agencygraph_changes?

Required arguments only, with placeholder values; see the parameters above for real ones.

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "agencygraph_changes",
    "arguments": {
      "country": "ES",
      "agency_ids": [
        "…"
      ]
    }
  }
}
```

## Related pages

- [Countries and weekly builds (agencygraph_coverage)](/docs/agencygraph/coverage)
- [One country in detail (agencygraph_country_coverage)](/docs/agencygraph/country_coverage)
- [Find an agency (agencygraph_resolve_agency)](/docs/agencygraph/resolve_agency)
- [Agency profile (agencygraph_agency_profile)](/docs/agencygraph/agency_profile)
- [AgencyGraph: overview](/docs/agencygraph)
- [AgencyGraph MCP server: connect and examples](/docs/agencygraph/mcp)
- [AgencyGraph REST API](/docs/rest/agencygraph)