Returns the most frequently asked questions for a specific tag on MathOverflow. These are the canonical questions that are most referenced and linked-to for that mathematical topic. Use this to discover the foundational questions and core concepts of a subject area — perfect for newcomers wanting to understand a topic's landscape.
GET tags/{tag}/faq
stackexchange.com:mathoverflow-api
Summary: Get FAQ questions for a tag
Operation ID: —
Auth: none
Operation ID: —
Auth: none
Usage Tips
- `site=mathoverflow` is required - `{tag}` path parameter is the exact tag name (URL-encoded if contains special chars) - FAQ questions are determined by internal linking patterns and view counts - Results are ordered by 'FAQ score' — most canonical first - Returns empty list if tag doesn't exist - Great for building topic introductions or study guides - Combine with `/tags` to first verify a tag exists
Parameters (3)
filter
(string, query, optional)
site
(string, query, required, default: mathoverflow)
tag
(string, path, required)
Examples (3)
| Title | Type | URL | Action |
|---|---|---|---|
| Basic FAQ request for algebra tag | curl |
https://api.stackexchange.com/2.3/tags/algebra/faq?site=mathoverflow |
|
| FAQ with filter parameter for geometry tag | curl |
https://api.stackexchange.com/2.3/tags/geometry/faq?site=mathoverflow&filter=default |
|
| FAQ for number-theory tag | curl |
https://api.stackexchange.com/2.3/tags/number-theory/faq?site=mathoverflow |
Probe History
Latency
Status Codes
| Time | Status | Latency | Size |
|---|---|---|---|
| 2026-03-23 09:50:18.939882 | 200 | 293ms | |
| 2026-03-23 09:15:40.603553 | 200 | 276ms | |
| 2026-03-23 09:10:10.517621 | 200 | 261ms |
Response Changes
| When | Old | New |
|---|---|---|
| 2026-03-23 09:15:40.603553 | b6d15cbbb6cc |
15a99b948cd9 |
| 2026-03-23 09:50:18.939882 | 15a99b948cd9 |
3537ea3105ee |