Azure Durable Functions

Azure Durable Functions is a serverless extension for writing stateful workflows and orchestrations in code using Azure Functions. The extension exposes built-in HTTP APIs for managing orchestrations, durable entities, and task hubs.

Azure Durable Functions publishes 2 APIs on the APIs.io network: Entities API and Orchestrations API. Tagged areas include API Composition, Durable Execution, Serverless Orchestration, and Workflows.

Azure Durable Functions’ developer surface includes authentication, documentation, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

37.1/100 thin ▬ flat Agent 23/100 agent aware self hosted · MIT Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs 1 MCP Servers

API Composition Durable ExecutionServerless OrchestrationWorkflows

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 37.1/100 · thin

Contract Quality 9.8 / 20

Developer Ergonomics 3.8 / 16

Access Clarity 2.5 / 16

Operational Transparency 3.8 / 10

Contract Governance 0.0 / 10

Discoverability 4.7 / 8

Open Source Surface 10.0 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/durable-functions: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Azure Durable Functions Entities API

Durable entity management

Azure Durable Functions Orchestrations API

Orchestration instance management

Open Collections 4

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Azure Durable Functions HTTP Entities API

OPEN COLLECTION

Azure Durable Functions HTTP API

OPEN COLLECTION

Azure Durable Functions HTTP Entities Orchestrations API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Durable Functions Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Durable Functions Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Durable Functions Finops

FINOPS

Security Posture 3

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

Durable Functions Authentication

apiKey · 1 scheme

SECURITY

Durable Functions Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Durable Functions Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Durable Functions Agentic Access

14 operations · 10 acting · 1 human-in-the-loop

14 operations · 10 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

MCPServer

MCPServer

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

SecurityPolicy

SecurityPolicy

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Releases

Releases

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Repository

Repository

Source (apis.yml)

aid: durable-functions
name: Azure Durable Functions
description: Azure Durable Functions is a serverless extension for writing stateful workflows and orchestrations in code using
  Azure Functions. The extension exposes built-in HTTP APIs for managing orchestrations, durable entities, and task hubs.
type: Index
deliveryModel:
  model: self-hosted
  license: MIT
  open_source: true
  commercial: false
  callable_host: true
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/durable-functions.png
tags:
- API Composition
- Durable Execution
- Serverless Orchestration
- Workflows
tags_raw:
- API Composition
- Durable Execution
- Serverless Orchestration
- Workflow
url: https://raw.githubusercontent.com/api-evangelist/durable-functions/refs/heads/main/apis.yml
created: '2026-03-27'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: durable-functions:durable-functions-entities-api
  name: Azure Durable Functions Entities API
  description: Durable entity management
  humanURL: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api
  baseURL: https://{appName}.azurewebsites.net
  tags:
  - Entities
  properties:
  - type: OpenAPI
    url: openapi/durable-functions-entities-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/
  - type: HTTP API Reference
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-create-first-csharp
- aid: durable-functions:durable-functions-orchestrations-api
  name: Azure Durable Functions Orchestrations API
  description: Orchestration instance management
  humanURL: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api
  baseURL: https://{appName}.azurewebsites.net
  tags:
  - Orchestrations
  properties:
  - type: OpenAPI
    url: openapi/durable-functions-orchestrations-api-openapi.yml
  - type: Documentation
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/
  - type: HTTP API Reference
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-http-api
  - type: GettingStarted
    url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-create-first-csharp
common:
- type: IssueTracker
  url: https://github.com/Azure/azure-functions-durable-extension/issues
- type: Releases
  url: https://github.com/Azure/azure-functions-durable-extension/releases
- type: SecurityPolicy
  url: https://github.com/Azure/azure-functions-durable-extension/blob/dev/SECURITY.md
- type: CodeOfConduct
  url: https://github.com/Azure/.github/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/Azure/azure-functions-durable-extension/blob/dev/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/Azure/azure-functions-durable-extension/blob/dev/LICENSE
- type: AgenticAccess
  url: agentic-access/durable-functions-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/durable-functions-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/durable-functions-domain-security.yml
- type: Authentication
  url: authentication/durable-functions-authentication.yml
- type: Website
  url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-overview
- type: Documentation
  url: https://learn.microsoft.com/en-us/azure/azure-functions/durable/
- type: GitHubOrganization
  url: https://github.com/Azure
- type: Repository
  url: https://github.com/Azure/azure-functions-durable-extension
- name: MCP Server
  url: https://github.com/Azure/azure-functions-mcp-extension
  type: MCPServer
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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