> ## Documentation Index
> Fetch the complete documentation index at: https://docs.adcontextprotocol.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Discover agent

> Probe an agent URL to discover its name, type, supported protocols, and basic statistics.



## OpenAPI

````yaml https://raw.githubusercontent.com/adcontextprotocol/adcp/v3.0.26/static/openapi/registry.yaml get /api/public/discover-agent
openapi: 3.1.0
info:
  title: AgenticAdvertising.org Registry API
  description: >-
    REST API for the AgenticAdvertising.org registry. Resolve brands,

    discover properties, look up agents, and validate authorization in the

    AdCP ecosystem.


    Most endpoints are public and require no authentication. Endpoints marked

    with a lock icon accept either an organization API key or a user JWT

    obtained via the OAuth 2.1 flow — see
    [Authentication](https://agenticadvertising.org/docs/registry/index#authentication).


    **Base URL:** `https://agenticadvertising.org`
  version: 1.0.0
  contact:
    name: AgenticAdvertising.org
    url: https://agenticadvertising.org
servers:
  - url: https://agenticadvertising.org
    description: Production
security: []
tags:
  - name: Brand Resolution
    description: Resolve advertiser domains to canonical brand identities.
  - name: Property Resolution
    description: >-
      Resolve publisher domains to their property configurations and authorized
      agents.
  - name: Agent Discovery
    description: >-
      Browse the federated agent network, search agent inventory profiles,
      publisher index, and registry statistics.
  - name: Change Feed
    description: Poll cursor-based registry change events for local sync.
  - name: Lookups & Authorization
    description: >-
      Look up agents by domain or property, and validate ad-serving
      authorization.
  - name: Validation Tools
    description: >-
      Validate publisher adagents.json files and generate compliant
      configurations.
  - name: Search
    description: Cross-entity search across brands, publishers, agents, and properties.
  - name: Agent Probing
    description: >-
      Connect to live agents and inspect their capabilities, formats, and
      inventory.
  - name: Brand Discovery
    description: Discover and crawl brand.json files across domains.
  - name: Agent Compliance
    description: Agent compliance status, storyboard test results, and compliance history.
  - name: Policy Registry
    description: >-
      Browse, resolve, and contribute governance policies for campaign
      compliance.
paths:
  /api/public/discover-agent:
    get:
      tags:
        - Agent Probing
      summary: Discover agent
      description: >-
        Probe an agent URL to discover its name, type, supported protocols, and
        basic statistics.
      operationId: discoverAgent
      parameters:
        - schema:
            type: string
          required: true
          name: url
          in: query
      responses:
        '200':
          description: Discovered agent info
          content:
            application/json:
              schema:
                type: object
                properties:
                  name:
                    type: string
                  description:
                    type: string
                  protocols:
                    type: array
                    items:
                      type: string
                  type:
                    type: string
                  stats:
                    type: object
                    properties:
                      format_count:
                        type: integer
                      product_count:
                        type: integer
                      publisher_count:
                        type: integer
                required:
                  - name
                  - protocols
                  - type
                  - stats
        '504':
          description: Connection timeout
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                  message:
                    type: string
                required:
                  - error
                  - message

````