Docs menu

Metaculus API endpoint

Metaculus category questions API

Returns Metaculus question rows for a category. Allowed category slugs: artificial-intelligence, computing-and-math, cryptocurrencies, economy-business, elections, environment-climate, geopolitics, health-pandemics, law, metaculus, natural-sciences, nuclear, politics, social-sciences, space, sports-entertainment, technology.

GETapiKey2 credits/requestMetaculusmetaculus.questionsResponseDoc/metaculus/category/{slug}/questions

Endpoint facts

Method: GET
API path: /metaculus/category/{slug}/questions
Auth: apiKey
Credits: 2 credits/request
Charged on: Successful 2xx responses only
Platform: Metaculus
Response schema: #/definitions/metaculus.questionsResponseDoc

Metaculus Scraper API Try Metaculus category questions API in Playground Metaculus API documentation

How this endpoint behaves

Path parameters:

slug: required Metaculus category slug. Allowed values: artificial-intelligence, computing-and-math, cryptocurrencies, economy-business, elections, environment-climate, geopolitics, health-pandemics, law, metaculus, natural-sciences, nuclear, politics, social-sciences, space, sports-entertainment, technology.

Query parameters:

limit: rows to return. Defaults to 10; maximum 25.

Notable response behavior:

data.feed is category.
data.source_url uses /questions/?categories={slug}&for_main_feed=false.
Unsupported category slugs return invalid-parameter errors before upstream IO.
Upstream authentication, challenge, or parser drift is returned as a typed upstream error.

Live monitoring

Monitored request: GET /metaculus/category/politics/questions
Checks passed, 7 days to 14 Oct 2026: 100%
Median response time: 3.41 s

Current status of every endpoint

Sampled response

Request, 14 Oct 2026: GET /metaculus/category/politics/questions?limit=20
Items in questions: 20
Fields filled in every checked item: 18
Fields empty in some or all items: 6

Field	Filled in, of 20 checked	Values in the sample
id	20
question_id	20
title	20
question_title	20
slug	20
url	20	metaculus.com
status	20
question_type	20
unit	9
comment_count	12	1 to 20, median 3
forecaster_count	20	7 to 288, median 127
forecasts_count	20	23 to 567, median 276
latest_forecast_center	18	0.12 to 1, median 0.46
latest_forecast_lower	18	0.06 to 1, median 0.32
latest_forecast_upper	18	0.15 to 1, median 0.58
open_time	20	2024-04-13 to 2026-10-12
scheduled_close_time	20	2026-09-29 to 2027-09-27
scheduled_resolve_time	20	2026-10-05 to 2027-10-01
published_at	20	2024-04-13 to 2026-10-11
edited_at	20	2026-09-29 to 2026-10-13
categories	20	median 2 entries
projects	20	median 1 entry
public_page_derived	20
resolved	1	true in 1 of 1

Request parameters

Parameter	Type	Required	Description	Example
slug (path)	string	Yes	Metaculus category slug Allowed values: artificial-intelligence, computing-and-math, cryptocurrencies, economy-business, elections, environment-climate, geopolitics, health-pandemics, law, metaculus, natural-sciences, nuclear, politics, social-sciences, space, sports-entertainment, technology.	artificial-intelligence
limit	integer	No	Rows to return, default 10, max 25
x-api-key (header)	string	Yes	API key required

cURL example

curl -X GET "https://api.crawlora.net/api/v1/metaculus/category/artificial-intelligence/questions?limit=10" \
  -H "x-api-key: $CRAWLORA_API_KEY"

Example JSON response

{
  "code": 200,
  "msg": "OK",
  "data": {
    "limit": 1,
    "feed": "category",
    "source_url": "https://www.metaculus.com/questions/?categories=artificial-intelligence&for_main_feed=false",
    "fetched_at": "2026-06-07T14:00:00Z",
    "questions": [
      {
        "id": 43612,
        "title": "Example artificial intelligence question",
        "comment_count": 16,
        "public_page_derived": true
      }
    ]
  }
}

Request schema

No body schema

Response schema

#/definitions/metaculus.questionsResponseDoc

Field	Type	Required	Example	Description
code	integer	No	200
data	metaculus.QuestionsResponse	No
data.feed	string	No	questions	Feed the questions came from, for example `questions`.
data.fetched_at	string	No	2026-06-07T14:00:00Z	Time the data was fetched, in UTC (RFC 3339).
data.limit	integer	No	10	Maximum number of questions requested.
data.questions	array	No		Questions in the feed, one item per question.
data.questions[].categories	array	No		Categories the question is filed under.
data.questions[].categories[].emoji	string	No	💼	Emoji shown next to the category or project on Metaculus.
data.questions[].categories[].id	integer	No	3698	Metaculus id of the category or project.
data.questions[].categories[].name	string	No	Economy & Business	Display name, for example `Economy & Business`.
data.questions[].categories[].slug	string	No	economy-business	URL slug, for example `economy-business`.
data.questions[].categories[].type	string	No	category	Kind of project, for example `category` or `tournament`.
data.questions[].comment_count	integer	No	16	Number of comments on the question.
data.questions[].edited_at	string	No	2026-06-07T13:14:34Z	Time the question was last edited, in UTC (RFC 3339).
data.questions[].forecaster_count	integer	No	54	Number of forecasters who have forecast on the question.
data.questions[].forecasts_count	integer	No	149	Total number of forecasts submitted on the question.
data.questions[].id	integer	No	43612	Metaculus post id of the question. Use it with the question endpoints.
data.questions[].latest_forecast_center	number	No	0.52	Central value of the latest community forecast, as Metaculus reports it.
data.questions[].latest_forecast_lower	number	No	0.37	Lower bound of the latest community forecast interval.
data.questions[].latest_forecast_upper	number	No	0.66	Upper bound of the latest community forecast interval.
data.questions[].open_time	string	No	2026-06-01T17:00:00Z	Time the question opened for forecasts, in UTC (RFC 3339).
data.questions[].projects	array	No		Tournaments and projects the question belongs to.
data.questions[].projects[].emoji	string	No	💼	Emoji shown next to the category or project on Metaculus.
data.questions[].projects[].id	integer	No	3698	Metaculus id of the category or project.
data.questions[].projects[].name	string	No	Economy & Business	Display name, for example `Economy & Business`.
data.questions[].projects[].slug	string	No	economy-business	URL slug, for example `economy-business`.
data.questions[].projects[].type	string	No	category	Kind of project, for example `category` or `tournament`.
data.questions[].public_page_derived	boolean	No	true	Always `true`: the values are those shown publicly on Metaculus, without a login.
data.questions[].published_at	string	No	2026-05-29T15:33:53Z	Time the question was published, in UTC (RFC 3339).
data.questions[].question_id	integer	No	43609	Metaculus id of the underlying question, which can differ from the post `id`.
data.questions[].question_title	string	No	What will be the World Bank monthly price of liquid sulphur in June 2026?	Full wording of the question.
data.questions[].question_type	string	No	numeric	Question type, for example `binary`, `numeric` or `multiple_choice`.
data.questions[].resolved	boolean	No	false	Whether the question has been resolved.
data.questions[].scheduled_close_time	string	No	2026-07-15T00:00:00Z	Time the question is scheduled to close to forecasts, in UTC (RFC 3339).
data.questions[].scheduled_resolve_time	string	No	2026-09-07T00:00:00Z	Time the question is scheduled to resolve, in UTC (RFC 3339).
data.questions[].slug	string	No	tampa-sulphur-price-in-june-2026	URL slug of the question.
data.questions[].status	string	No	open	Question status on Metaculus, for example `open`.
data.questions[].title	string	No	Tampa sulphur price in June 2026?	Question title as shown on Metaculus.
data.questions[].unit	string	No	USD/metric ton	Unit of the answer for numeric questions, for example `USD/metric ton`.
data.questions[].url	string	No	https://www.metaculus.com/questions/43612/tampa-sulphur-price-in-june-2026/	Metaculus page URL of the question.
data.source_url	string	No	https://www.metaculus.com/questions/	URL the data was read from.
msg	string	No	OK

Failure responses

Status	Description	Schema
400	Bad Request	#/definitions/app.Response
404	Not Found	#/definitions/app.Response
429	Too Many Requests	#/definitions/app.Response
500	Internal Server Error	#/definitions/app.Response
503	Service Unavailable	#/definitions/app.Response

Code examples

Use environment variables for secrets and keep Crawlora API keys server-side.

curl -X GET "https://api.crawlora.net/api/v1/metaculus/category/artificial-intelligence/questions?limit=10" \
  -H "x-api-key: $CRAWLORA_API_KEY"

Shared guides

Authentication Errors and retries Rate limits and credits Pricing Acceptable use

More Metaculus endpoint docs Metaculus Scraper API Metaculus comments feed API documentation Metaculus project questions API documentation Metaculus question detail API documentation Metaculus question forecast history API documentation Metaculus question forecasts API documentation Metaculus question metadata API documentation

Open in Playground Back to group

Docs menu

Metaculus API endpoint

Metaculus category questions API

GETapiKey2 credits/requestMetaculusmetaculus.questionsResponseDoc/metaculus/category/{slug}/questions

Endpoint facts

Method: GET
API path: /metaculus/category/{slug}/questions
Auth: apiKey
Credits: 2 credits/request
Charged on: Successful 2xx responses only
Platform: Metaculus
Response schema: #/definitions/metaculus.questionsResponseDoc

Metaculus Scraper API Try Metaculus category questions API in Playground Metaculus API documentation

How this endpoint behaves

Path parameters:

slug: required Metaculus category slug. Allowed values: artificial-intelligence, computing-and-math, cryptocurrencies, economy-business, elections, environment-climate, geopolitics, health-pandemics, law, metaculus, natural-sciences, nuclear, politics, social-sciences, space, sports-entertainment, technology.

Query parameters:

limit: rows to return. Defaults to 10; maximum 25.

Notable response behavior:

data.feed is category.
data.source_url uses /questions/?categories={slug}&for_main_feed=false.
Unsupported category slugs return invalid-parameter errors before upstream IO.
Upstream authentication, challenge, or parser drift is returned as a typed upstream error.

Live monitoring

Monitored request: GET /metaculus/category/politics/questions
Checks passed, 7 days to 14 Oct 2026: 100%
Median response time: 3.41 s

Current status of every endpoint

Sampled response

Request, 14 Oct 2026: GET /metaculus/category/politics/questions?limit=20
Items in questions: 20
Fields filled in every checked item: 18
Fields empty in some or all items: 6

Field	Filled in, of 20 checked	Values in the sample
id	20
question_id	20
title	20
question_title	20
slug	20
url	20	metaculus.com
status	20
question_type	20
unit	9
comment_count	12	1 to 20, median 3
forecaster_count	20	7 to 288, median 127
forecasts_count	20	23 to 567, median 276
latest_forecast_center	18	0.12 to 1, median 0.46
latest_forecast_lower	18	0.06 to 1, median 0.32
latest_forecast_upper	18	0.15 to 1, median 0.58
open_time	20	2024-04-13 to 2026-10-12
scheduled_close_time	20	2026-09-29 to 2027-09-27
scheduled_resolve_time	20	2026-10-05 to 2027-10-01
published_at	20	2024-04-13 to 2026-10-11
edited_at	20	2026-09-29 to 2026-10-13
categories	20	median 2 entries
projects	20	median 1 entry
public_page_derived	20
resolved	1	true in 1 of 1

Request parameters

Parameter	Type	Required	Description	Example
slug (path)	string	Yes	Metaculus category slug Allowed values: artificial-intelligence, computing-and-math, cryptocurrencies, economy-business, elections, environment-climate, geopolitics, health-pandemics, law, metaculus, natural-sciences, nuclear, politics, social-sciences, space, sports-entertainment, technology.	artificial-intelligence
limit	integer	No	Rows to return, default 10, max 25
x-api-key (header)	string	Yes	API key required

cURL example

curl -X GET "https://api.crawlora.net/api/v1/metaculus/category/artificial-intelligence/questions?limit=10" \
  -H "x-api-key: $CRAWLORA_API_KEY"

Example JSON response

{
  "code": 200,
  "msg": "OK",
  "data": {
    "limit": 1,
    "feed": "category",
    "source_url": "https://www.metaculus.com/questions/?categories=artificial-intelligence&for_main_feed=false",
    "fetched_at": "2026-06-07T14:00:00Z",
    "questions": [
      {
        "id": 43612,
        "title": "Example artificial intelligence question",
        "comment_count": 16,
        "public_page_derived": true
      }
    ]
  }
}

Request schema

No body schema

Response schema

#/definitions/metaculus.questionsResponseDoc

Field	Type	Required	Example	Description
code	integer	No	200
data	metaculus.QuestionsResponse	No
data.feed	string	No	questions	Feed the questions came from, for example `questions`.
data.fetched_at	string	No	2026-06-07T14:00:00Z	Time the data was fetched, in UTC (RFC 3339).
data.limit	integer	No	10	Maximum number of questions requested.
data.questions	array	No		Questions in the feed, one item per question.
data.questions[].categories	array	No		Categories the question is filed under.
data.questions[].categories[].emoji	string	No	💼	Emoji shown next to the category or project on Metaculus.
data.questions[].categories[].id	integer	No	3698	Metaculus id of the category or project.
data.questions[].categories[].name	string	No	Economy & Business	Display name, for example `Economy & Business`.
data.questions[].categories[].slug	string	No	economy-business	URL slug, for example `economy-business`.
data.questions[].categories[].type	string	No	category	Kind of project, for example `category` or `tournament`.
data.questions[].comment_count	integer	No	16	Number of comments on the question.
data.questions[].edited_at	string	No	2026-06-07T13:14:34Z	Time the question was last edited, in UTC (RFC 3339).
data.questions[].forecaster_count	integer	No	54	Number of forecasters who have forecast on the question.
data.questions[].forecasts_count	integer	No	149	Total number of forecasts submitted on the question.
data.questions[].id	integer	No	43612	Metaculus post id of the question. Use it with the question endpoints.
data.questions[].latest_forecast_center	number	No	0.52	Central value of the latest community forecast, as Metaculus reports it.
data.questions[].latest_forecast_lower	number	No	0.37	Lower bound of the latest community forecast interval.
data.questions[].latest_forecast_upper	number	No	0.66	Upper bound of the latest community forecast interval.
data.questions[].open_time	string	No	2026-06-01T17:00:00Z	Time the question opened for forecasts, in UTC (RFC 3339).
data.questions[].projects	array	No		Tournaments and projects the question belongs to.
data.questions[].projects[].emoji	string	No	💼	Emoji shown next to the category or project on Metaculus.
data.questions[].projects[].id	integer	No	3698	Metaculus id of the category or project.
data.questions[].projects[].name	string	No	Economy & Business	Display name, for example `Economy & Business`.
data.questions[].projects[].slug	string	No	economy-business	URL slug, for example `economy-business`.
data.questions[].projects[].type	string	No	category	Kind of project, for example `category` or `tournament`.
data.questions[].public_page_derived	boolean	No	true	Always `true`: the values are those shown publicly on Metaculus, without a login.
data.questions[].published_at	string	No	2026-05-29T15:33:53Z	Time the question was published, in UTC (RFC 3339).
data.questions[].question_id	integer	No	43609	Metaculus id of the underlying question, which can differ from the post `id`.
data.questions[].question_title	string	No	What will be the World Bank monthly price of liquid sulphur in June 2026?	Full wording of the question.
data.questions[].question_type	string	No	numeric	Question type, for example `binary`, `numeric` or `multiple_choice`.
data.questions[].resolved	boolean	No	false	Whether the question has been resolved.
data.questions[].scheduled_close_time	string	No	2026-07-15T00:00:00Z	Time the question is scheduled to close to forecasts, in UTC (RFC 3339).
data.questions[].scheduled_resolve_time	string	No	2026-09-07T00:00:00Z	Time the question is scheduled to resolve, in UTC (RFC 3339).
data.questions[].slug	string	No	tampa-sulphur-price-in-june-2026	URL slug of the question.
data.questions[].status	string	No	open	Question status on Metaculus, for example `open`.
data.questions[].title	string	No	Tampa sulphur price in June 2026?	Question title as shown on Metaculus.
data.questions[].unit	string	No	USD/metric ton	Unit of the answer for numeric questions, for example `USD/metric ton`.
data.questions[].url	string	No	https://www.metaculus.com/questions/43612/tampa-sulphur-price-in-june-2026/	Metaculus page URL of the question.
data.source_url	string	No	https://www.metaculus.com/questions/	URL the data was read from.
msg	string	No	OK

Failure responses

Status	Description	Schema
400	Bad Request	#/definitions/app.Response
404	Not Found	#/definitions/app.Response
429	Too Many Requests	#/definitions/app.Response
500	Internal Server Error	#/definitions/app.Response
503	Service Unavailable	#/definitions/app.Response

Code examples

Use environment variables for secrets and keep Crawlora API keys server-side.

curl -X GET "https://api.crawlora.net/api/v1/metaculus/category/artificial-intelligence/questions?limit=10" \
  -H "x-api-key: $CRAWLORA_API_KEY"

Shared guides

Authentication Errors and retries Rate limits and credits Pricing Acceptable use

Open in Playground Back to group

Metaculus category questions API

Endpoint facts

How this endpoint behaves

Live monitoring

Sampled response

Request parameters

cURL example

Example JSON response

Failure responses

Code examples

Shared guides

Related

Metaculus category questions API

Endpoint facts

How this endpoint behaves

Live monitoring

Sampled response

Request parameters

cURL example

Example JSON response

Failure responses

Code examples

Shared guides

Related