Sync catalog changes since a watermark

Delta sync for local mirrors: returns catalog entries created/updated since since (a prior server_timestamp), capped at 10,000 per page. Pagination is by the returned server_timestamp watermark, distinct from browseCatalog’s opaque cursor.

GET /api/registry/catalog/sync

Sync catalog changes since a watermark

cURL

curl --request GET \
  --url https://agenticadvertising.org/api/registry/catalog/sync

import requests

url = "https://agenticadvertising.org/api/registry/catalog/sync"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://agenticadvertising.org/api/registry/catalog/sync', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://agenticadvertising.org/api/registry/catalog/sync",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://agenticadvertising.org/api/registry/catalog/sync"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://agenticadvertising.org/api/registry/catalog/sync")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://agenticadvertising.org/api/registry/catalog/sync")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

200

{
  "entries": [
    {
      "property_rid": "<string>",
      "property_id": "<string>",
      "classification": "<string>",
      "source": "<string>",
      "status": "<string>",
      "adagents_url": "<string>",
      "created_by": "<string>",
      "created_at": "<string>",
      "updated_at": "<string>",
      "source_updated_at": "<string>"
    }
  ],
  "server_timestamp": "<string>",
  "next_cursor": "<string>"
}

{
  "error": "<string>"
}

Query Parameters

since · string · required

Watermark from a prior response server_timestamp (required).

Example:

"2026-03-27T10:00:00.000Z"

limit · string

Page size, capped at 10,000.

Response

200

application/json

Catalog delta

entries · object[] · required

Show child attributes

server_timestamp · string · required

Watermark to pass as since on the next sync (avoids clock skew).

next_cursor · string | null · required