Publisher lookup

Given a domain, returns the inventory this entity publishes and which agents it authorizes.

This endpoint is unauthenticated and returns the same response shape for every caller. Compare to /api/registry/operator, where AAO membership tier and profile ownership unlock additional agent visibility (members_only, private). AAO membership does not change the /publisher response today.

Property source precedence: publisher-attested adagents.json properties win first. When no publisher-attested adagents properties exist for the domain, brand.json properties supplement and override lower-trust rows, followed by approved community catalogs, then crawler-discovered rows. Each property carries a source field (adagents_json / brand_json / community / discovered).

Per-agent rollup: each entry in authorized_agents may carry properties_authorized + properties_total + publisher_wide. The rollup is suppressed (fields absent) when (a) properties are entirely brand.json-hydrated — no adagents.json claim has been made — or (b) the publisher has more than 50 authorized agents (above-cap entries are returned without rollup; rollup_truncated is set with { cap, total_agents }). Use /api/registry/publisher/authorization?domain=X&agent=Y for the per-agent count when the index rollup is absent.

GET /api/registry/publisher

Publisher lookup

cURL

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

import requests

url = "https://agenticadvertising.org/api/registry/publisher"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://agenticadvertising.org/api/registry/publisher', 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/publisher",
  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/publisher"

	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/publisher")
  .asString();

require 'uri'
require 'net/http'

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

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

{
  "domain": "voxmedia.com",
  "member": {
    "slug": "<string>",
    "display_name": "<string>",
    "membership_tier": "<string>",
    "membership_tier_label": "<string>",
    "is_founding_member": true
  },
  "adagents_valid": true,
  "hosting": {
    "expected_url": "<string>",
    "hosted_url": "<string>",
    "resolved_url": "<string>",
    "last_validated": "<string>",
    "last_http_status": 349,
    "last_bytes": 1,
    "origin_verified_at": "<string>",
    "origin_last_checked_at": "<string>"
  },
  "properties": [
    {
      "id": "<string>",
      "type": "<string>",
      "name": "<string>",
      "identifiers": [
        {
          "type": "domain",
          "value": "examplepub.com"
        }
      ],
      "tags": [
        "<string>"
      ]
    }
  ],
  "authorized_agents": [
    {
      "url": "<string>",
      "authorized_for": "<string>",
      "properties_authorized": 1,
      "properties_total": 1,
      "publisher_wide": true
    }
  ],
  "manager_domain": "<string>",
  "files": {
    "adagents_json": {
      "expected_url": "<string>",
      "registry_url": "<string>"
    },
    "brand_json": {
      "name": "<string>"
    }
  },
  "brand": {
    "name": "<string>",
    "description": "<string>",
    "logo_url": "<string>",
    "colors": [
      "<string>"
    ],
    "industries": [
      "<string>"
    ]
  },
  "formats": [
    {
      "display_name": "<string>",
      "format_kind": "<string>",
      "format_option_id": "<string>",
      "sample_render_url": "<string>",
      "params": {},
      "applies_to_property_ids": [
        "<string>"
      ],
      "applies_to_property_tags": [
        "<string>"
      ],
      "seller_preference": "<string>",
      "experimental": true
    }
  ],
  "rollup_truncated": {
    "cap": 123,
    "total_agents": 1
  },
  "auto_crawl_triggered": true
}

{
  "error": "<string>"
}

Query Parameters

domain · string · required

Example:

"voxmedia.com"

Response

200

application/json

Publisher lookup result

domain · string · required

Example:

"voxmedia.com"

member · object | null · required

Show child attributes

adagents_valid · boolean | null · required

hosting · object · required

Show child attributes

properties · object[] · required

Show child attributes

authorized_agents · object[] · required

Show child attributes

discovery_method · enum<string> | null

How the publisher's adagents.json was discovered on the most recent successful crawl or registry write. direct: publisher's own /.well-known/ served the document. authoritative_location: publisher's stub redirected to a canonical URL. ads_txt_managerdomain: manifest was discovered via ads.txt MANAGERDOMAIN delegation. adagents_authoritative: manager file named this publisher through publisher_properties fan-out. community_catalog: moderator-approved community catalog. Null until first crawl after migration 470.

Available options: direct, authoritative_location, ads_txt_managerdomain, adagents_authoritative, community_catalog, null

manager_domain · string | null

The manager domain whose adagents.json was used to authorize this publisher's agents. Non-null only when discovery_method is ads_txt_managerdomain. Matches the MANAGERDOMAIN value from the publisher's ads.txt.

files · object

Plain-English summary of what AAO has found at the publisher's origin. The publisher page leads with this — you have a valid adagents.json is the primary signal, not mode === self. Optional in the schema for backwards compatibility; the handler always populates it.

Show child attributes

brand · object

Display-oriented brand identity summary from brand.json. The full raw document remains available from the publisher's /.well-known/brand.json or hosted registry URL.

Show child attributes

formats · object[]

Display-oriented summary of top-level adagents.json formats[], normalized for publisher pages and agent discovery clients. Each entry preserves format_kind, format_option_id, and canonical params.

Show child attributes

rollup_truncated · object

Set when the publisher has more authorized agents than the per-agent rollup cap. Above the cap, agents beyond cap are returned without properties_authorized / properties_total / publisher_wide; call /api/registry/publisher/authorization?domain=X&agent=Y for the per-agent count. Lets a caller decide whether to fan out individual calls or stop reading.

Show child attributes

auto_crawl_triggered · boolean

Set to true when this request triggered a background crawl of the publisher's origin (we hadn't crawled before). The client should refetch in ~3-5s to pick up fresh data. Debounced per-domain so a tight refresh loop won't keep firing crawls.