Hosting

Google-managed remote

Transport

Streamable HTTP

Endpoint

https://agentregistry.googleapis.com/mcp

Authentication

Google Cloud authentication: OAuth 2.0 using Application Default Credentials (ADC) in supported Google clients, or a client OAuth ID/secret or bearer token in compatible third-party clients. The principal needs mcp.tools.call plus the underlying product permissions; API key authentication is only available for services that explicitly support it.

Requirements

• A Google Cloud project and access to the target product/resource.
• Enable this MCP service and its underlying Google Cloud API as required by the product guide.
• An MCP client that supports Streamable HTTP.
• An identity with the MCP Tool User role (roles/mcp.toolUser) or equivalent mcp.tools.call permission, plus permissions for the underlying product operations.

Setup steps

1. Choose the correct global or regional endpoint for your data location; this catalog lists the documented endpoint.
2. In the Google Cloud project, enable the MCP service and the underlying product API if the product guide requires it.
3. Authenticate the client with Google Cloud ADC (simplest with Antigravity/Gemini CLI) or configure OAuth 2.0 credentials in a compatible client.
4. Grant the connecting identity roles/mcp.toolUser and only the product IAM roles needed for the intended operations.
5. Add agentregistry.googleapis.com to the client as a Streamable HTTP MCP server and complete sign-in.
6. Refresh the client tool list and check that the tools match the product reference; availability may depend on permissions and selected toolset.

Official Google Cloud docs enumerate 20 tools for discovery and management. Reads search/list registry metadata; create/update/delete service and binding operations change registry configuration. Access requires Google Cloud IAM permissions, including mcp.tools.call and product-specific permissions.

• list_agents

  Return a paginated list of agents within a specified Google Cloud project and location. Use this to enumerate all agents or filter by basic resource attributes. Don't use this for natural language discovery; use search_agents instead.

  01
• search_agents

  Perform a keyword or prefix search to discover agents within a specific project and location. Use this when you need to find an agent based on natural language queries, specific skills, tags, or descriptions.

  02
• get_agent

  Retrieve the full metadata and configuration details of a specific agent using its unique resource name. Use this when you already know the agent's ID and need to inspect its capabilities, protocols, or endpoints.

  03
• list_endpoints

  Return a paginated list of registered endpoints accessed by agents in a given project and location.

  04
• get_endpoint

  Retrieve details of a single registered endpoint using its unique resource name, including its connection interfaces and protocol bindings.

  05
• list_mcp_servers

  Return a paginated list of MCP servers within a specified Google Cloud project and location. Use this to enumerate servers. For keyword discovery, use search_mcp_servers instead.

  06
• search_mcp_servers

  Perform a keyword or prefix search to discover MCP servers. Use this to find servers based on the specific tools they offer, their descriptions, or natural language queries.

  07
• get_mcp_server

  Retrieve the full metadata of a specific MCP server using its unique resource name. Use this to inspect the exact tools and schemas exposed by a known server.

  08
• list_services

  List services in a given project and location. A service can represent a manually onboarded MCP server, agent or REST endpoint.

  09
• get_service

  Retrieve a specific service record. A service can represent a manually onboarded MCP server, agent or REST endpoint. This shows the underlying registration specification used to manually onboard a resource.

  10
• create_service

  Manually register a new custom workload by creating a Service resource. A service can represent a manually onboarded MCP server, agent or REST endpoint. Use this to onboard third-party agents, remote MCP servers, or REST endpoints by providing their specification.

  11
• update_service

  Update the specification or parameters of an existing service. A service can represent a manually onboarded MCP server, agent or REST endpoint. Use this to patch an uploaded Agent Card, MCP tool specification, or endpoint bindings.

  12
• delete_service

  Delete a service record, effectively deregistering the manually onboarded agent, MCP server, or REST endpoint from the registry.

  13
• list_bindings

  Return a paginated list of bindings within a specified Google Cloud project and location.

  14
• get_binding

  Retrieve details of a single binding using its unique resource name.

  15
• create_binding

  Create a new binding between an agent and another resource (agent, MCP server, or endpoint).

  16
• update_binding

  Update the specification or parameters of an existing binding.

  17
• delete_binding

  Delete a binding record, effectively removing the connection between resources.

  18
• fetch_available_bindings

  Fetch available bindings for a given source resource.

  19
• get_operation

  Gets the latest state of a long-running operation.

  20

• official tool reference

  Product-specific Google MCP reference publishes 20 exact tool identifiers and descriptions in its tools reference.

• official server catalog

  Official Google Cloud catalog lists this product as an available remote MCP server.

• official setup guide

  Google Cloud describes remote MCP client setup, Streamable HTTP transport, supported authentication options, and ADC setup.

• official authentication guide

  Google documents supported identity types and authorization requirements for Google Cloud MCP calls.

• official setup and tool reference

  Current Google Cloud docs describe available discovery/administrative tools, IAM permissions, and a public tools/list request.

• official tool schema

  Official reference provides exact schema for list_agents and links to the documented registry tool catalog.

Documentation checked 2026-10-28. Connection has not been runtime tested.