Genkit Agents API

sdk-framework

Properties

vendor: Google
url: https://developers.googleblog.com/build-agentic-full-stack-apps-with-genkit/
whatItIs: Preview API inside Google's open-source Genkit framework that packages agent definitions, session state, streaming, remote clients, human-approval interrupts, HTTP routes, and multi-agent delegation behind a single interface for building full-stack agentic apps. Distinct from Google's Agent Development Kit (already tracked as google-adk): Genkit is a general-purpose GenAI app toolkit that added this agent-specific API, whereas ADK is purpose-built only for multi-agent orchestration.
hosting: both
pricingModel: open-source (Apache-2.0); model inference billed separately by whichever provider is plugged in
modelProviders: multi-model via unified plugin interface (Google/Gemini, OpenAI, Anthropic, Ollama, Vertex AI referenced in Genkit's own docs)
stateModel: session state with flexible server- or client-managed persistence, supporting history branching and long-running detached tasks
toolModel: function-calling + multi-agent delegation (remote clients over a unified wire protocol)
includesBrowser: false
includesMemory: false
longRunning: long-running detached tasks supported
hitlSupport: true
observability: integrates with the Genkit Developer UI to test, debug, and inspect agent snapshots
maturity: preview
launched: 2026-07-01
notes: The Agents API preview first shipped in TypeScript and Go. Python Genkit v0.12.0 (released 24 Sep) now also carries Agents under the experimental namespace (imports moved from genkit.agent to genkit.exp); the release notes say 'Agents moved to the experimental namespace. They will graduate to stable over time.' The release notes give no stable or GA date. Vendor explicitly warns the API can introduce breaking changes in minor releases. Maturity stays preview.

Properties

vendor

Google

url

https://developers.googleblog.com/build-agentic-full-stack-apps-with-genkit/

whatItIs

Preview API inside Google's open-source Genkit framework that packages agent definitions, session state, streaming, remote clients, human-approval interrupts, HTTP routes, and multi-agent delegation behind a single interface for building full-stack agentic apps. Distinct from Google's Agent Development Kit (already tracked as google-adk): Genkit is a general-purpose GenAI app toolkit that added this agent-specific API, whereas ADK is purpose-built only for multi-agent orchestration.

hosting

both

pricingModel

open-source (Apache-2.0); model inference billed separately by whichever provider is plugged in

modelProviders

multi-model via unified plugin interface (Google/Gemini, OpenAI, Anthropic, Ollama, Vertex AI referenced in Genkit's own docs)

stateModel

session state with flexible server- or client-managed persistence, supporting history branching and long-running detached tasks

toolModel

function-calling + multi-agent delegation (remote clients over a unified wire protocol)

includesBrowser

false

includesMemory

false

longRunning

long-running detached tasks supported

hitlSupport

true

observability

integrates with the Genkit Developer UI to test, debug, and inspect agent snapshots

maturity

preview

launched

2026-07-01

notes

The Agents API preview first shipped in TypeScript and Go. Python Genkit v0.12.0 (released 24 Sep) now also carries Agents under the experimental namespace (imports moved from genkit.agent to genkit.exp); the release notes say 'Agents moved to the experimental namespace. They will graduate to stable over time.' The release notes give no stable or GA date. Vendor explicitly warns the API can introduce breaking changes in minor releases. Maturity stays preview.