Restate website screenshot

Restate

Restate is a durable execution platform for building resilient distributed applications, microservice orchestration, durable workflows, stateful services, and AI agents. Founded by Apache Flink and Apache Kafka veterans (Stephan Ewen, Igal Shilman, Till Rohrmann), Restate ships a single-binary Rust runtime that journals every step of handler execution so code survives crashes, restarts, and infrastructure failures. The platform exposes an Ingress API on port 8080 for HTTP invocation of services, virtual objects, and workflows (with idempotency keys, async /send semantics, and delayed invocations) and an Admin API on port 9070 for deployment registration, service introspection, invocation control (cancel, kill, pause, resume, restart, purge), subscriptions, and cluster health. Official SDKs target TypeScript, Java/Kotlin, Python, Go, Rust, and Ruby, with first-class integrations for AWS Lambda, Cloudflare Workers, Deno Deploy, Vercel, and Kubernetes (via the restate-operator). Restate Cloud is the managed offering with SOC 2 Type I compliance, enterprise SSO (Okta, Google Workspace, Azure AD), HIPAA BAAs, and an in-preview client-side journal encryption feature.

Restate publishes 3 APIs on the APIs.io network. Tagged areas include AI Agents, Durable Execution, Durable Workflows, Event-Driven, and Kafka.

Restate’s developer surface includes developer portal, documentation, getting-started guide, tutorials, CLI, pricing, engineering blog, and 16 more developer resources.

26.4/100 emerging ▬ flat Agent 5/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.6
3 APIs 1 Agent Skills 13 Features 8 Use Cases
AI AgentsDurable ExecutionDurable WorkflowsEvent-DrivenKafkaMicroservice OrchestrationOrchestrationProCode_API_CompositionResilienceSagasSelf-HostingService ProtocolState MachinesStateful ServicesStep FunctionsVirtual ObjectsWorkflowsXState

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 26.4/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 10.5 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 5/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/restate-dev: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Restate Admin API

The Restate Admin API is the HTTP control plane for a running Restate Server, exposed by default on port 9070. It manages service deployment registration, lists and introspects ...

Restate Ingress API

The Restate Ingress API is the HTTP data-plane for invoking services, virtual objects, and workflows running on Restate Server, exposed by default on port 8080. Requests follow ...

Restate Service Protocol

The Restate Service Protocol is the wire protocol Restate Server uses to communicate with handler endpoints implemented in any official SDK. It journals every side-effect (durab...

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

Features 13

Notable capabilities this provider offers.

Durable Execution

Restate journals every handler step so code survives crashes, restarts, and infrastructure failures and resumes exactly where it left off.

Virtual Objects

Stateful, single-writer addressable entities with built-in key-value state and exclusive concurrency for safe stateful services.

Workflows

Long-running, durable workflow handlers with deterministic replay, sleeps that can span months, and external signal awakeables.

Sagas and Compensations

First-class patterns for compensating side-effects across distributed transactions with guaranteed cleanup paths.

Durable Promises and Awakeables

External-event integration where workflows pause for human input, webhooks, or asynchronous callbacks without losing state.

Kafka Event Subscriptions

Subscribe Restate handlers to Kafka topics so events are turned into durable, exactly-once handler invocations.

Idempotent HTTP Invocations

Idempotency-Key header makes any Ingress invocation safe to retry, with responses cached for 24 hours.

Delayed and Scheduled Invocations

Schedule invocations into the future with ?delay= or use Restate as a cron substitute for durable timers.

Embedded SQL Introspection

Query journal, invocation, service, and state metadata over an embedded Apache DataFusion SQL engine for live introspection.

Single-Binary Distributed Server

A single Rust binary that runs single-node for development and scales to a multi-node cluster with embedded RocksDB and Raft.

Restate Cloud

Managed Restate clusters with SOC 2 Type I, enterprise SSO (Okta, Google Workspace, Azure AD), HIPAA BAAs, and tunneling.

Client-Side Journal Encryption

Developer-preview feature that encrypts journal entries with customer-owned keys before they reach Restate Cloud.

Web UI and CLI

First-party Web UI and restate CLI for inspecting invocations, registering deployments, and managing services.

Scroll for all 13

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Restate Dev Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Use Cases 8

What developers build with this provider.

Microservice Orchestration

Coordinate multi-service business transactions with automatic retries, compensation, and timeout handling using durable handlers.

Durable AI Agents

Build agents that survive process crashes and replay tool calls deterministically, with integrations for OpenAI, LangChain, Pydantic AI, Vercel AI, Google ADK, and LiteLLM.

Step Functions and Workflow Engines

Replace AWS Step Functions / Azure Durable Functions / hand-rolled state machines with code-first workflows in your language of choice.

Background Jobs and Async Tasks

Run reliable background jobs with retries, idempotency, and scheduling without a separate queue and worker infrastructure.

Saga-Based Distributed Transactions

Implement compensating-action sagas for cross-service operations like order fulfillment, payments, and inventory reservation.

Stateful Serverless APIs

Combine virtual-object state with FaaS deployment on AWS Lambda, Cloudflare Workers, Deno Deploy, or Vercel for stateful serverless apps.

Event-Driven Workflows

Subscribe handlers to Kafka topics so each event triggers a durable, exactly-once workflow invocation.

Human-in-the-Loop Approvals

Pause workflows on awakeables that wait for webhook callbacks, signed URLs, or human approvals for arbitrary durations.

Scroll for all 8

Integrations 24

Pre-built integrations with other platforms and tools.

TypeScript SDK

Official Restate SDK for Node.js and TypeScript - the most-used SDK and the basis for many examples.

Java/Kotlin SDK

Official Restate SDK for the JVM, with Spring Boot, Maven, and Gradle templates.

Python SDK

Official Restate SDK for Python, with AWS Lambda and standalone templates.

Go SDK

Official Restate SDK for Go with the standard handler/object/workflow programming model.

Rust SDK

Official Restate SDK for Rust, sharing the same shared-core protocol implementation as the server.

Ruby SDK

Official Restate SDK for Ruby (newer addition to the SDK family).

Restate Operator for Kubernetes

Official Kubernetes operator (restate-operator) for deploying Restate clusters on EKS, GKE, AKS, and bare-metal Kubernetes.

AWS Lambda

Deploy Restate handlers as AWS Lambda functions via the restatedev/cdk constructs and lambda templates.

Cloudflare Workers

Deploy Restate handlers to Cloudflare Workers via the cloudflare-workers-template.

Deno Deploy

Deploy Restate handlers to Deno Deploy via the deno-template.

Vercel

Deploy Restate handlers to Vercel via the vercel-template and vercel-workflow projects.

Kafka

Subscribe handlers to Kafka topics for event-driven, exactly-once invocation.

XState

Run XState state machines as durable Restate workflows via restatedev/xstate.

OpenAI Agents SDK

Make OpenAI Agents SDK loops crash-tolerant with Restate as the durable runtime.

LangChain

Integrate Restate as the durable orchestrator behind LangChain agent workflows.

Pydantic AI

Drive Pydantic AI agent workflows with Restate for fault tolerance and step replay.

Google ADK

Build resilient agents with the Google Agent Development Kit (ADK) and Restate.

Vercel AI SDK

Use Restate as the durable runtime for Vercel AI SDK agents and chat applications.

LiteLLM

Integrate LiteLLM with Restate for durable LLM routing and retry across providers.

Langfuse

Trace Restate handler executions and LLM calls in Langfuse for observability.

OpenTelemetry

Emit traces, metrics, and logs from Restate Server and SDKs via OpenTelemetry.

PostgreSQL and Databases

Use Restate to coordinate database transactions across services with durable execution guarantees.

Apache DataFusion

Embedded Apache DataFusion SQL engine powers introspection queries against journals and state.

Knative

Build stateful serverless applications by combining Knative and Restate.

Scroll for all 24

Solutions 4

Packaged solutions this provider offers.

Restate Server (Open Source)

BSL-licensed single-binary Rust server, free for self-hosted use and the canonical runtime for the Restate Service Protocol.

Restate Cloud

Fully-managed Restate clusters with SOC 2, enterprise SSO, HIPAA BAA support, and Cloud Tunnel client for hybrid deployments.

Restate On-Prem / BYOC

Bring-your-own-cloud option for running Restate in customer-controlled AWS, GCP, or Azure accounts with Restate-managed operations.

Restate for AI Agents

Targeted positioning for durable agent orchestration with integrations across major LLM and agent frameworks.

Resources

Get Started 5

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Build 3

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Learn 1

Tutorials, courses, talks, and written guidance

Operate 1

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 3

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: restate-dev
name: Restate
segments:
- ProCode_API_Composition
- Workflows
description: Restate is a durable execution platform for building resilient distributed applications, microservice orchestration,
  durable workflows, stateful services, and AI agents. Founded by Apache Flink and Apache Kafka veterans (Stephan Ewen, Igal
  Shilman, Till Rohrmann), Restate ships a single-binary Rust runtime that journals every step of handler execution so code
  survives crashes, restarts, and infrastructure failures. The platform exposes an Ingress API on port 8080 for HTTP invocation
  of services, virtual objects, and workflows (with idempotency keys, async /send semantics, and delayed invocations) and
  an Admin API on port 9070 for deployment registration, service introspection, invocation control (cancel, kill, pause, resume,
  restart, purge), subscriptions, and cluster health. Official SDKs target TypeScript, Java/Kotlin, Python, Go, Rust, and
  Ruby, with first-class integrations for AWS Lambda, Cloudflare Workers, Deno Deploy, Vercel, and Kubernetes (via the restate-operator).
  Restate Cloud is the managed offering with SOC 2 Type I compliance, enterprise SSO (Okta, Google Workspace, Azure AD), HIPAA
  BAAs, and an in-preview client-side journal encryption feature.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Consumer
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/restate-dev.png
tags:
- AI Agents
- Durable Execution
- Durable Workflows
- Event-Driven
- Kafka
- Microservice Orchestration
- Orchestration
- ProCode_API_Composition
- Resilience
- Sagas
- Self-Hosting
- Service Protocol
- State Machines
- Stateful Services
- Step Functions
- Virtual Objects
- Workflows
- XState
created: '2026-05-25'
modified: '2026-05-25'
url: https://raw.githubusercontent.com/api-evangelist/restate-dev/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: restate-dev:admin-api
  name: Restate Admin API
  description: The Restate Admin API is the HTTP control plane for a running Restate Server, exposed by default on port 9070.
    It manages service deployment registration, lists and introspects services and handlers, controls invocations (cancel,
    kill, pause, resume, restart, purge), manages Kafka and event subscriptions, queries system state via embedded SQL, and
    reports cluster health and version. The Admin API is the surface the Restate CLI and Web UI drive, and an OpenAPI document
    for the running server is available at the /openapi endpoint.
  humanURL: https://docs.restate.dev/operate/clients
  tags:
  - Admin
  - Control Plane
  - Deployments
  - Invocations
  - Subscriptions
  properties:
  - type: Documentation
    url: https://docs.restate.dev/operate/clients
  - type: APIReference
    url: https://docs.restate.dev/references/admin-api
  - type: GitHubRepository
    url: https://github.com/restatedev/restate
- aid: restate-dev:ingress-api
  name: Restate Ingress API
  description: The Restate Ingress API is the HTTP data-plane for invoking services, virtual objects, and workflows running
    on Restate Server, exposed by default on port 8080. Requests follow the path conventions /{ServiceName}/{handler}, /{VirtualObject}/{key}/{handler},
    and /{Workflow}/{workflowId}/run, with JSON bodies. Append /send for fire-and-forget invocations that return an invocation
    ID, pass a ?delay= parameter for delayed/scheduled invocations, and use the Idempotency-Key header for at-most-once semantics
    (responses are cached for 24 hours). The Ingress also brokers Kafka-event-driven handler invocations and exposes per-service
    OpenAPI documents at :9070/services/{ServiceName}/openapi.
  humanURL: https://docs.restate.dev/invoke/http
  tags:
  - Data Plane
  - HTTP
  - Idempotency
  - Ingress
  - Invocation
  - Virtual Objects
  - Workflows
  properties:
  - type: Documentation
    url: https://docs.restate.dev/invoke/http
  - type: GitHubRepository
    url: https://github.com/restatedev/restate
- aid: restate-dev:service-protocol
  name: Restate Service Protocol
  description: The Restate Service Protocol is the wire protocol Restate Server uses to communicate with handler endpoints
    implemented in any official SDK. It journals every side-effect (durable steps, RPCs, state reads/writes, sleeps, awakeables)
    so handlers can be replayed deterministically and resume from the exact step they were on when an infrastructure failure
    occurred. Implementations of this protocol are what make a language an official Restate SDK; the shared core lives in
    sdk-shared-core and the protocol definitions in the Restate Server source tree.
  humanURL: https://docs.restate.dev/develop/sdks
  tags:
  - Durability
  - Journal
  - Protocol
  - SDK
  properties:
  - type: Documentation
    url: https://docs.restate.dev/develop/sdks
  - type: GitHubRepository
    url: https://github.com/restatedev/sdk-shared-core
common:
- type: TrustCenter
  url: security/restate-dev-trust-center.yml
- type: DomainSecurity
  url: security/restate-dev-domain-security.yml
- type: Portal
  url: https://restate.dev
- type: Documentation
  url: https://docs.restate.dev
- type: GettingStarted
  url: https://docs.restate.dev/get_started/quickstart
- type: GettingStarted
  url: https://docs.restate.dev/get_started/quickstart
- type: Tutorial
  url: https://docs.restate.dev/get_started/tour
- type: SDKs
  url: https://docs.restate.dev/develop/sdks
- type: CLI
  url: https://docs.restate.dev/operate/clients
- type: Pricing
  url: https://restate.dev/pricing
- type: Cloud
  url: https://restate.dev/cloud
- type: Blog
  url: https://restate.dev/blog
- type: UseCases
  url: https://restate.dev/use-cases
- type: Careers
  url: https://restate.dev/careers
- type: Team
  url: https://restate.dev/team
- type: Contact
  url: https://restate.dev/contact
- type: TermsOfService
  url: https://restate.dev/terms-and-conditions
- type: PrivacyPolicy
  url: https://restate.dev/privacy
- type: Imprint
  url: https://restate.dev/imprint
- type: Login
  url: https://cloud.restate.dev
- type: Signup
  url: https://cloud.restate.dev
- type: GitHubOrganization
  url: https://github.com/restatedev
- type: LlmsText
  url: https://docs.restate.dev/llms.txt
- type: AgentSkills
  url: https://github.com/restatedev/skills
- type: Features
  data:
  - name: Durable Execution
    description: Restate journals every handler step so code survives crashes, restarts, and infrastructure failures and resumes
      exactly where it left off.
  - name: Virtual Objects
    description: Stateful, single-writer addressable entities with built-in key-value state and exclusive concurrency for
      safe stateful services.
  - name: Workflows
    description: Long-running, durable workflow handlers with deterministic replay, sleeps that can span months, and external
      signal awakeables.
  - name: Sagas and Compensations
    description: First-class patterns for compensating side-effects across distributed transactions with guaranteed cleanup
      paths.
  - name: Durable Promises and Awakeables
    description: External-event integration where workflows pause for human input, webhooks, or asynchronous callbacks without
      losing state.
  - name: Kafka Event Subscriptions
    description: Subscribe Restate handlers to Kafka topics so events are turned into durable, exactly-once handler invocations.
  - name: Idempotent HTTP Invocations
    description: Idempotency-Key header makes any Ingress invocation safe to retry, with responses cached for 24 hours.
  - name: Delayed and Scheduled Invocations
    description: Schedule invocations into the future with ?delay= or use Restate as a cron substitute for durable timers.
  - name: Embedded SQL Introspection
    description: Query journal, invocation, service, and state metadata over an embedded Apache DataFusion SQL engine for
      live introspection.
  - name: Single-Binary Distributed Server
    description: A single Rust binary that runs single-node for development and scales to a multi-node cluster with embedded
      RocksDB and Raft.
  - name: Restate Cloud
    description: Managed Restate clusters with SOC 2 Type I, enterprise SSO (Okta, Google Workspace, Azure AD), HIPAA BAAs,
      and tunneling.
  - name: Client-Side Journal Encryption
    description: Developer-preview feature that encrypts journal entries with customer-owned keys before they reach Restate
      Cloud.
  - name: Web UI and CLI
    description: First-party Web UI and restate CLI for inspecting invocations, registering deployments, and managing services.
- type: UseCases
  data:
  - name: Microservice Orchestration
    description: Coordinate multi-service business transactions with automatic retries, compensation, and timeout handling
      using durable handlers.
  - name: Durable AI Agents
    description: Build agents that survive process crashes and replay tool calls deterministically, with integrations for
      OpenAI, LangChain, Pydantic AI, Vercel AI, Google ADK, and LiteLLM.
  - name: Step Functions and Workflow Engines
    description: Replace AWS Step Functions / Azure Durable Functions / hand-rolled state machines with code-first workflows
      in your language of choice.
  - name: Background Jobs and Async Tasks
    description: Run reliable background jobs with retries, idempotency, and scheduling without a separate queue and worker
      infrastructure.
  - name: Saga-Based Distributed Transactions
    description: Implement compensating-action sagas for cross-service operations like order fulfillment, payments, and inventory
      reservation.
  - name: Stateful Serverless APIs
    description: Combine virtual-object state with FaaS deployment on AWS Lambda, Cloudflare Workers, Deno Deploy, or Vercel
      for stateful serverless apps.
  - name: Event-Driven Workflows
    description: Subscribe handlers to Kafka topics so each event triggers a durable, exactly-once workflow invocation.
  - name: Human-in-the-Loop Approvals
    description: Pause workflows on awakeables that wait for webhook callbacks, signed URLs, or human approvals for arbitrary
      durations.
- type: Integrations
  data:
  - name: TypeScript SDK
    description: Official Restate SDK for Node.js and TypeScript - the most-used SDK and the basis for many examples.
  - name: Java/Kotlin SDK
    description: Official Restate SDK for the JVM, with Spring Boot, Maven, and Gradle templates.
  - name: Python SDK
    description: Official Restate SDK for Python, with AWS Lambda and standalone templates.
  - name: Go SDK
    description: Official Restate SDK for Go with the standard handler/object/workflow programming model.
  - name: Rust SDK
    description: Official Restate SDK for Rust, sharing the same shared-core protocol implementation as the server.
  - name: Ruby SDK
    description: Official Restate SDK for Ruby (newer addition to the SDK family).
  - name: Restate Operator for Kubernetes
    description: Official Kubernetes operator (restate-operator) for deploying Restate clusters on EKS, GKE, AKS, and bare-metal
      Kubernetes.
  - name: AWS Lambda
    description: Deploy Restate handlers as AWS Lambda functions via the restatedev/cdk constructs and lambda templates.
  - name: Cloudflare Workers
    description: Deploy Restate handlers to Cloudflare Workers via the cloudflare-workers-template.
  - name: Deno Deploy
    description: Deploy Restate handlers to Deno Deploy via the deno-template.
  - name: Vercel
    description: Deploy Restate handlers to Vercel via the vercel-template and vercel-workflow projects.
  - name: Kafka
    description: Subscribe handlers to Kafka topics for event-driven, exactly-once invocation.
  - name: XState
    description: Run XState state machines as durable Restate workflows via restatedev/xstate.
  - name: OpenAI Agents SDK
    description: Make OpenAI Agents SDK loops crash-tolerant with Restate as the durable runtime.
  - name: LangChain
    description: Integrate Restate as the durable orchestrator behind LangChain agent workflows.
  - name: Pydantic AI
    description: Drive Pydantic AI agent workflows with Restate for fault tolerance and step replay.
  - name: Google ADK
    description: Build resilient agents with the Google Agent Development Kit (ADK) and Restate.
  - name: Vercel AI SDK
    description: Use Restate as the durable runtime for Vercel AI SDK agents and chat applications.
  - name: LiteLLM
    description: Integrate LiteLLM with Restate for durable LLM routing and retry across providers.
  - name: Langfuse
    description: Trace Restate handler executions and LLM calls in Langfuse for observability.
  - name: OpenTelemetry
    description: Emit traces, metrics, and logs from Restate Server and SDKs via OpenTelemetry.
  - name: PostgreSQL and Databases
    description: Use Restate to coordinate database transactions across services with durable execution guarantees.
  - name: Apache DataFusion
    description: Embedded Apache DataFusion SQL engine powers introspection queries against journals and state.
  - name: Knative
    description: Build stateful serverless applications by combining Knative and Restate.
- type: Solutions
  data:
  - name: Restate Server (Open Source)
    description: BSL-licensed single-binary Rust server, free for self-hosted use and the canonical runtime for the Restate
      Service Protocol.
  - name: Restate Cloud
    description: Fully-managed Restate clusters with SOC 2, enterprise SSO, HIPAA BAA support, and Cloud Tunnel client for
      hybrid deployments.
  - name: Restate On-Prem / BYOC
    description: Bring-your-own-cloud option for running Restate in customer-controlled AWS, GCP, or Azure accounts with Restate-managed
      operations.
  - name: Restate for AI Agents
    description: Targeted positioning for durable agent orchestration with integrations across major LLM and agent frameworks.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com