# Stack Exchange

**Canonical:** https://apis.io/providers/stackexchange/  
**Website:** https://stackexchange.com/  
**APIs profiled:** 17

Stack Exchange is the network of Q&A communities founded by Joel Spolsky and Jeff Atwood and headlined by Stack Overflow, the largest community of software developers on the web. The Stack Exchange API v2.3 (api.stackexchange.com) is a single, read-mostly HTTP/JSON interface that spans 180+ Q&A sites — Stack Overflow, Server Fault, Super User, Ask Ubuntu, Stats, Math Overflow, and the long tail of topical communities — and exposes the entire Q&A graph (questions, answers, comments, users, tags, badges, reputation, revisions, notifications, inbox, suggested-edits, network sites) under a uniform method surface. Stack Exchange also operates Stack Overflow for Teams (private knowledge bases with its own v3 REST API) and ships an official Stack Overflow MCP server that grounds AI agents in community-verified content.

## Kin Score — 41.5 / 100 (developing)

Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.5 from 41.0).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 21.0 |
| Governance | 28.8 |
| Contract Governance | 28.8 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 38.1 |
| Commercial Clarity | 52.6 |
| Access Clarity | 52.6 |

## Agent readiness — 34.7 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (17)

- **Stack Overflow for Teams API v3** — Newer REST API powering Stack Overflow for Teams (private/internal instances). Resource-oriented (questions, answers, articles, comments, tags, users, collections, communities) ...
- **Stack Exchange Access Tokens API** — OAuth access token introspection and invalidation.
- **Stack Exchange Answers API** — Answer objects — list, fetch by id, and per-question answers.
- **Stack Exchange Badges API** — Badges defined on a site — by id, name, type, and recipients.
- **Stack Exchange Comments API** — Comments attached to questions and answers across the network.
- **Stack Exchange Events API** — Recent network events (1.5 minute live window) for the authenticated user.
- **Stack Exchange Filters API** — Custom response filter creation and inspection.
- **Stack Exchange Info API** — Site-wide statistics, totals, and metadata.
- **Stack Exchange Me API** — Convenience surfaces that infer the user from the OAuth access token.
- **Stack Exchange Posts API** — Generic post surfaces covering both questions and answers as `post` objects.
- **Stack Exchange Questions API** — Question objects across the network — list, fetch, related, linked, search-equivalents.
- **Stack Exchange Revisions API** — Revision history for posts.
- **Stack Exchange Search API** — Question search — basic title-match, full-text excerpts, and advanced.
- **Stack Exchange Sites API** — Enumeration and metadata for the 180+ Stack Exchange Q&A sites.
- **Stack Exchange Suggested Edits API** — Pending edits proposed by users awaiting review.
- **Stack Exchange Tags API** — Tag catalog, synonyms, wikis, top askers/answerers, and related tags.
- **Stack Exchange Users API** — Site users, their reputation, badges, tags, top posts, timeline, and write surfaces.

## Agentic access (1)

- **Stackexchange Agentic Access** — 70 operations

## Security (2)

- **Stackexchange Authentication** — apiKey/oauth2 · 2 schemes
- **Stackexchange Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Stackexchange Plans Pricing**

## Tags

Q&A, Developer Community, Knowledge Graph, Stack Overflow, Stack Exchange, Reputation, Tags, Community, MCP, AI Grounding

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/stackexchange/). Scores are computed from the provider's own public artifacts under a published rubric.