Google API Gateway API
Browse all Google APIs40
AI ReadinessFoundational (D-)40/100
Official vendor OpenAPI document · agent-readyCloud InfrastructureNetworkingoauth215 EndpointsREST
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.
1
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fgoogleapis.com%2Fapigateway" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fgoogleapis.com%2Fapigateway" | 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
Jentic AI Readiness Score
This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.
A
API Gateway API
- Foundational (D-)40/100
69
Foundational Compliance56
Developer Experience & Jentic Compatibility17
AI-Readiness & Agent Experience94
Agent Usability63
Security66
AI DiscoverabilityPowered by JenticScoring Framework 1.0.0 | Scoring Engine 0.4.0
Show dimension breakdown
69
Foundational Compliance
Base layer of spec validity and structural soundness.
Grade: B+Signals: 4
78%
Lint Results
Aggregated quality score from linter diagnostics, weighted by severity.
100%
Resolution Completeness
Percentage of `$ref` references that resolve successfully.
0%
Specification Validity
Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).
100%
Structural Integrity
Structural correctness score based on schema issues using logarithmic dampening.
56
Developer Experience & Jentic Compatibility
Clarity, completeness, and ingestion readiness for developers and tooling.
Grade: CSignals: 4
0%
Example Density
How richly the API is illustrated with examples.
100%
Example Validity
Percentage of examples that conform to their schemas.
25%
Response Coverage
Percentage of operations with complete response definitions (success, client error, server error).
100%
Tooling Readiness
Health of API ingestion, bundling, and resolution within Jentic pipelines.
17
AI-Readiness & Agent Experience
Semantic breadth, depth, and agent comprehension for AI systems.
Grade: FSignals: 4
70%
Description Coverage
Coverage of descriptions across API elements.
0%
Error Standardization
Coverage of RFC 9457 Problem Details for error responses.
0%
OperationId Quality
Coverage, uniqueness, and casing consistency of operationIds for AI inference.
0%
Summary Coverage
Coverage of summaries across operations/tags/info.
94
Agent Usability
Functional utility, complexity comfort, and AI orchestration readiness.
Grade: A+Signals: 1
94%
Complexity Comfort
Agent comfort level based on API operational and structural complexity.
63
Security
Trust, risk posture, and security compliance.
Grade: B-Signals: 1
62%
Authentication Strength
Average quality of security schemes based on authentication method strength (weakest link for OAuth2).
66
AI Discoverability
Findability, semantic richness, and reasoning readiness.
Grade: BSignals: 1
66%
Descriptive Richness
Clarity and depth of descriptions across API elements.
Score it yourself
Every API in the directory is allowlisted, so you can re-score it with no key required.
npx @jentic/api-scorecard-cli score <openapi-url>Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring the API Gateway API by hand means configuring Google OAuth2, scoping a service account for Cloud control-plane access, and minting access tokens for each management call yourself. Through Jentic you install once, import the API Gateway API from the API Directory, store the OAuth credential once, and your agent calls it.
Permission scoping
This API puts the resource name in the URL path (/v1/{parent}/gateways, /v1/{name}), so a rule can pin your agent to one project or location: it can list APIs, configs, and gateways there and nothing else. You choose the operations it may call, so destructive ones like deleting a gateway are not included unless you add them.
Credential isolation
Your Google Cloud OAuth credential is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'deploy an API gateway' or 'upload an OpenAPI config', and Jentic returns the matching API Gateway operation with its input schema so the agent calls the right endpoint without the gcloud CLI or the full Cloud reference.
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.
Can I limit what my agent is allowed to do with the Google API Gateway API?
Yes. Because this API carries the resource name in the URL path, such as /v1/{parent}/gateways and /v1/{name}, your self-hosted Jentic One instance lets you write rules that pin the agent to one project or location, so it can list and manage APIs, configs, and gateways there and nothing else. You decide which operations the agent may call, so destructive ones like deleting a gateway or config are excluded unless you explicitly add them. Your own rules, not the agent, decide which operations and which Google Cloud OAuth credential are in scope at call time.
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