Stack Overflow

Stack Overflow is the world's largest question-and-answer community for developers, with over 23 million questions on programming, software development, and technology topics. Stack Overflow offers two API products: the public Stack Exchange API v2.3 for read/write access to Stack Overflow questions, answers, comments, users, tags, and badges; and the Stack Overflow for Teams API v3, a private team knowledge-base API with endpoints for questions, answers, articles, user groups, and SME management.

Stack Overflow publishes 10 APIs on the APIs.io network, including Answers API, Articles API, Badges API, and 7 more. Tagged areas include Answers, Code, Developer Community, Developer Tools, and Knowledge Base.

The Stack Overflow catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Stack Overflow’s developer surface includes authentication, engineering blog, signup flow, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub

38.4/100 thin ▬ flat Agent 32/100 agent aware Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0

AccessFreemiumSelf serve⚡ Free to try

10 APIs

Answers Code Developer Community Developer Tools Knowledge Base Programming Q&A QuestionsStack Overflow

Kin Score

Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0

Composite quality — 38.4/100 · thin

Contract Quality 15.9 / 25

Developer Ergonomics 2.9 / 20

Access Clarity 7.9 / 20

Operational Transparency 1.4 / 13

Contract Governance 3.5 / 12

Discoverability 6.9 / 10

Agent readiness — 32/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 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

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/stack-overflow: 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 10

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

Open Collections 13

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

Rate Limits 1

Documented rate limits and quota policies.

Stack Overflow Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

Examples 1

Example request and response payloads for these APIs.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Stack Overflow Scopes

3 scopes · authorizationCode

3 scopes

SCOPES

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 1

Reference material describing how the API behaves

JSONSchema

JSONSchema

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Vocabulary

Vocabulary

SpectralRules

SpectralRules

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity

Authentication

OAuthScopes

Authentication

Commercial 1

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: stack-overflow
specificationVersion: '0.23'
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stack-overflow.png
name: Stack Overflow
description: 'Stack Overflow is the world''s largest question-and-answer community for developers, with over 23 million questions
  on programming, software development, and technology topics. Stack Overflow offers two API products: the public Stack Exchange
  API v2.3 for read/write access to Stack Overflow questions, answers, comments, users, tags, and badges; and the Stack Overflow
  for Teams API v3, a private team knowledge-base API with endpoints for questions, answers, articles, user groups, and SME
  management.'
url: https://raw.githubusercontent.com/api-evangelist/stack-overflow/refs/heads/main/apis.yml
tags:
- Answers
- Code
- Developer Community
- Developer Tools
- Knowledge Base
- Programming
- Q&A
- Questions
- Stack Overflow
created: '2026-05-02'
modified: '2026-05-19'
apis:
- aid: stack-overflow:stack-overflow-answers-api
  name: Stack Overflow Answers API
  description: Operations for managing answers to questions in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Answers
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-answers-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-articles-api
  name: Stack Overflow Articles API
  description: Operations for managing knowledge articles in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Articles
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-articles-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-badges-api
  name: Stack Overflow Badges API
  description: Operations for retrieving badge information on Stack Overflow.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Badges
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-badges-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-comments-api
  name: Stack Overflow Comments API
  description: Operations for retrieving and writing comments on Stack Overflow posts.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Comments
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-comments-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-questions-api
  name: Stack Overflow Questions API
  description: Operations for managing questions in a Stack Overflow for Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Questions
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-questions-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-search-api
  name: Stack Overflow Search API
  description: Operations for searching Stack Overflow questions and content.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-search-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-smes-api
  name: Stack Overflow SMEs API
  description: Operations for managing Subject Matter Experts (SMEs) for tags in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - SMEs
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-smes-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-tags-api
  name: Stack Overflow Tags API
  description: Operations for managing tags in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-tags-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-user-groups-api
  name: Stack Overflow User Groups API
  description: Operations for managing user groups in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - User Groups
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-user-groups-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
- aid: stack-overflow:stack-overflow-users-api
  name: Stack Overflow Users API
  description: Operations for managing users in a Teams workspace.
  humanURL: https://api.stackexchange.com/
  baseURL: https://api.stackexchange.com/2.3
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/stack-overflow-users-api-openapi.yml
  - type: Documentation
    url: https://api.stackexchange.com/docs
  - type: TermsOfService
    url: https://stackexchange.com/legal/api-terms-of-use
  - type: RateLimits
    url: https://api.stackexchange.com/docs/throttle
  - type: Signup
    url: http://stackapps.com/apps/oauth/register
  - type: Documentation
    url: https://api.stackoverflowteams.com/docs
  - type: Blog
    url: https://stackoverflow.blog/2023/05/17/stack-overflow-for-teams-api-v3/
common:
- type: AgenticAccess
  url: agentic-access/stack-overflow-agentic-access.yml
- type: DomainSecurity
  url: security/stack-overflow-domain-security.yml
- type: Authentication
  url: authentication/stack-overflow-authentication.yml
- type: OAuthScopes
  url: scopes/stack-overflow-scopes.yml
- type: GitHubOrganization
  url: https://github.com/stackexchange
- type: LinkedIn
  url: https://www.linkedin.com/company/stack-overflow
- url: https://stackoverflow.com
  type: Website
- url: https://stackoverflow.blog/
  type: Blog
- url: https://api.stackexchange.com/docs/authentication
  type: Authentication
- url: http://stackapps.com/apps/oauth/register
  type: Signup
- url: https://stackexchange.com/legal/api-terms-of-use
  type: TermsOfService
- url: json-ld/stack-overflow-context.jsonld
  type: JSONLD
- url: json-schema/stack-overflow-question-schema.json
  type: JSONSchema
- url: vocabulary/stack-overflow-vocabulary.yml
  type: Vocabulary
- url: rules/stack-overflow-rules.yml
  type: SpectralRules

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