Google API Gateway API
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For Agents
Provision and manage Google Cloud API Gateway resources to front Cloud Run, Functions, and App Engine backends. Useful for agents that need to expose internal services as authenticated, rate-limited public APIs.
Use for: Create a new API and upload an OpenAPI spec as a config, Deploy a gateway that routes to my Cloud Run service, Update an existing API config to a new spec version, Grant a service account invoke permission on a gateway
Not supported: Does not handle backend service hosting, full enterprise API management, or runtime traffic processing — use for control-plane management of Google Cloud API Gateway resources only.
The Google Cloud API Gateway API lets developers create and manage gateways, API configs, and APIs that front backend services running on Cloud Run, Cloud Functions, or App Engine. It exposes resources for the API, ApiConfig (the OpenAPI spec plus auth and rate-limit policy), and Gateway (the deployable endpoint), along with IAM helpers for resource-level permissions and operation tracking for asynchronous deploys.
Install Jentic One Beta
Connect the API Gateway API to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the API Gateway API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
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Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with API Gateway API.
Create and update API resources that group related ApiConfigs
Upload an OpenAPI spec as an ApiConfig with auth and quota policy
Deploy a Gateway that routes traffic to a specific ApiConfig
Manage IAM policy on gateways, APIs, and configs
Track long-running deploy operations through to completion
List APIs, configs, and gateways across project locations
Use Cases
Patterns agents use API Gateway API for, with concrete tasks.
★ Expose Cloud Run services as a managed public API
Teams running services on Cloud Run or Cloud Functions front them with API Gateway to add API key auth, JWT validation, and quota enforcement without writing middleware. The agent uploads an OpenAPI spec as an ApiConfig and deploys a Gateway that becomes the public entry point for the backend.
Create API 'orders-api', upload openapi.yaml as config 'v1', then create a gateway 'orders-prod' bound to that config in us-central1.
Versioned API rollouts
Engineering ships new contract versions by uploading a new ApiConfig and pointing the Gateway at it. Because the Gateway resource is independently mutable, switching versions is a single update call, and a rollback is the inverse update — no DNS or load-balancer change required.
Patch gateway projects/p/locations/us-central1/gateways/orders-prod to reference apiConfig v2 and poll the returned operation until done.
IAM-locked partner APIs
When the gateway should only accept calls from specific partner service accounts, IAM bindings on the gateway resource restrict who can invoke it. The setIamPolicy and getIamPolicy endpoints on the gateway resource make this auditable through Terraform or scripts.
Set IAM policy on the orders-prod gateway granting roles/apigateway.invoker to serviceAccount:partner@example.iam.gserviceaccount.com.
AI agent gateway operations through Jentic
An infra-focused AI agent rolls out new API versions by reading a Pull Request that updates the OpenAPI spec, uploading the new ApiConfig, swapping the gateway, and reporting success. Through Jentic the agent uses search-load-execute and never holds the project's service account JSON.
Read openapi.yaml from the PR diff, create config 'v3', update gateway orders-prod to reference it, and post the new gateway URL into the PR.
Key Endpoints
15 endpoints — the google cloud api gateway api lets developers create and manage gateways, api configs, and apis that front backend services running on cloud run, cloud functions, or app engine.
METHOD
PATH
DESCRIPTION
GET
/v1/{+parent}/apis
List APIs in a project
GET
/v1/{+parent}/configs
List API configs under an API
GET
/v1/{+parent}/gateways
List gateways in a location
GET
/v1/{+resource}:getIamPolicy
Get IAM policy on a gateway, API, or config
GET
/v1/{+name}/locations
List supported locations
DELETE
/v1/{+name}
Delete an API, config, or gateway
GET
/v1/{+parent}/apis
List APIs in a project
GET
/v1/{+parent}/configs
List API configs under an API
GET
/v1/{+parent}/gateways
List gateways in a location
GET
/v1/{+resource}:getIamPolicy
Get IAM policy on a gateway, API, or config
GET
/v1/{+name}/locations
List supported locations
DELETE
/v1/{+name}
Delete an API, config, or gateway
Why Jentic?
Three things that make agents converge on Jentic-routed access.
Credential isolation
Google Cloud service account credentials are stored encrypted in the Jentic vault. Agents call API Gateway management operations through Jentic with scoped access tokens; the JSON key never reaches the agent context.
Intent-based discovery
Agents search Jentic with phrases like 'deploy api gateway' or 'upload openapi config' and Jentic returns the matching API Gateway operation with its input schema, so the agent does not need the gcloud CLI or the full Cloud reference.
Time to first call
Direct integration: 1-2 days for IAM, gcloud setup, and operation polling. Through Jentic: under one hour to start creating APIs, configs, and gateways.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using API Gateway API through Jentic.
What authentication does the Google API Gateway API use?
OAuth 2.0 with Google Cloud credentials (service account or user). Through Jentic the credentials are vaulted and exchanged for short-lived scoped access tokens at call time.
Can I deploy a new gateway version without downtime?
Yes. Upload a new ApiConfig under the same API resource, then patch the gateway to reference the new config. Traffic shifts at the platform level once the operation completes, so there is no DNS change required.
What are the rate limits for the Google API Gateway API?
Control-plane operations (create, update, list) follow the standard Google Cloud per-project per-minute quotas. Data-plane traffic through the deployed gateway has its own quotas configured per ApiConfig and is independent of this control-plane API.
How do I deploy a gateway through Jentic?
Search Jentic for 'create google api gateway', load the schema for the gateways.create operation under /v1/{+parent}/gateways, and execute it with parent project and location plus the apiConfig reference. Poll the returned operation until done.
Is the Google API Gateway API free?
Control-plane calls are free. Data-plane traffic through deployed gateways is billed per million requests, separately from this management API.
What is the relationship between Api, ApiConfig, and Gateway?
An Api is the logical grouping; an ApiConfig is a versioned OpenAPI spec plus policy; a Gateway is the deployed endpoint that points at one ApiConfig. Updating the gateway to a different config switches traffic without recreating resources.
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