Substack

List Substack categories

List Substack categories with their subcategories and the recommended view.

GET/v1/substack/categories
1credit
x-api-keystringheader

API key (`sfk_...`)

Response fields
287

Endpoint-specific response payload.

datalookupStatus
string

`found` on success.

one of: found, not_found

Top-level categories.

datacategories[]id
integer

The category's id, numeric or text.

datacategories[]name
stringnullable

The category's name.

datacategories[]canonicalName
stringnullable

The category's canonical name.

datacategories[]slug
stringnullable

The category's URL slug.

datacategories[]active
booleannullable

Whether the category is active.

datacategories[]rank
integernullable

The category's rank.

datacategories[]parentTagId

The parent category's id, when it has one.

datacategories[]emoji
stringnullable

The category's emoji.

datacategories[]leaderboardDescription
stringnullable

The leaderboard description.

datacategories[]deprecated
booleannullable

Whether the category is deprecated.

datacategories[]type
stringnullable

The category's type.

datacategories[]leaderboardEnabled
booleannullable

Whether the category has a leaderboard.

datacategories[]createdAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datacategories[]updatedAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

The category's subcategories.

datacategories[]subcategories[]
objectoptional

Null when the second call failed; `categories` is still served.

datarecommendedcategoryId
stringnullable

The category this view names.

datarecommendedranking
stringnullable

The leaderboard ranking.

datarecommendedhasMore
booleannullable

Whether another page exists.

The recommended categories.

datarecommendedcategories[]id
integer

The category's id, numeric or text.

datarecommendedcategories[]name
stringnullable

The category's name.

datarecommendedcategories[]canonicalName
stringnullable

The category's canonical name.

datarecommendedcategories[]slug
stringnullable

The category's URL slug.

datarecommendedcategories[]active
booleannullable

Whether the category is active.

datarecommendedcategories[]rank
integernullable

The category's rank.

datarecommendedcategories[]parentTagId

The parent category's id, when it has one.

datarecommendedcategories[]emoji
stringnullable

The category's emoji.

datarecommendedcategories[]leaderboardDescription
stringnullable

The leaderboard description.

datarecommendedcategories[]deprecated
booleannullable

Whether the category is deprecated.

datarecommendedcategories[]type
stringnullable

The category's type.

datarecommendedcategories[]leaderboardEnabled
booleannullable

Whether the category has a leaderboard.

datarecommendedcategories[]createdAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedcategories[]updatedAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

The category's subcategories.

datarecommendedcategories[]subcategories[]
objectoptional

Publications in this view.

datarecommendedpublications[]id
integer

Numeric publication id.

datarecommendedpublications[]name
stringnullable

The publication's name.

datarecommendedpublications[]subdomain
stringnullable

The publication's Substack subdomain.

datarecommendedpublications[]customDomain
stringnullable

The publication's custom domain, when it has one.

datarecommendedpublications[]apexDomain
stringnullable

The publication's apex domain, when it has one.

datarecommendedpublications[]url
stringnullable

The publication's canonical base URL.

datarecommendedpublications[]host
stringnullable

The host its pages are served from.

datarecommendedpublications[]description
stringnullable

The publication's description.

datarecommendedpublications[]language
stringnullable

The publication's language code.

datarecommendedpublications[]kind
stringnullable

`newsletter`, `podcast` or Substack's own type.

datarecommendedpublications[]createdAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedpublications[]firstPostAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedpublications[]hasPosts
booleannullable

Whether the publication has posts.

datarecommendedpublications[]isExplicit
booleannullable

Whether the publication is marked explicit.

datarecommendedpublications[]isInviteOnly
booleannullable

Whether the publication is invite-only.

datarecommendedpublications[]isFlagged
booleannullable

Whether the publication is flagged.

datarecommendedpublications[]noIndex
booleannullable

Whether search engines are asked not to index it.

datarecommendedpublications[]isOnSubstack
booleannullable

Whether the publication is hosted by Substack.

datarecommendedpublications[]commentsEnabled
booleannullable

Whether comments are enabled.

datarecommendedpublications[]notesEnabled
booleannullable

Whether Notes are enabled.

datarecommendedpublications[]defaultCommentSort
stringnullable

The default comment order.

datarecommendedpublications[]annualDisabled
booleannullable

Whether annual plans are disabled.

datarecommendedpublications[]monthlyDisabled
booleannullable

Whether monthly plans are disabled.

datarecommendedpublications[]paymentsState
stringnullable

The publication's payments state.

datarecommendedpublications[]freeTrialEnabled
booleannullable

Whether a free trial is offered.

datarecommendedpublications[]pausedUntil
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedpublications[]emailBannerUrl
stringnullable

The email banner image URL.

datarecommendedpublications[]copyright
stringnullable

The copyright line the publication prints.

datarecommendedpublications[]logoUrl
stringnullable

The publication's logo URL.

datarecommendedpublications[]wideLogoUrl
stringnullable

The publication's wide logo URL.

datarecommendedpublications[]coverImageUrl
stringnullable

The publication's cover image URL.

datarecommendedpublications[]foundingPlanName
stringnullable

The name of the founding-member plan.

datarecommendedpublications[]hasRecommendations
booleannullable

Whether the publication recommends others.

The benefit lists for each subscription tier.

Benefits for free subscribers.

datarecommendedpublications[]benefitsfree[]
stringoptional

Benefits for paid subscribers.

datarecommendedpublications[]benefitspaid[]
stringoptional

Benefits for founding members.

datarecommendedpublications[]benefitsfounding[]
stringoptional

The publication's main author.

datarecommendedpublications[]authorid
integernullable

Numeric user id.

datarecommendedpublications[]authorname
stringnullable

The name shown for the author.

datarecommendedpublications[]authorhandle
stringnullable

The author's handle.

datarecommendedpublications[]authorslug
stringnullable

The author's profile slug.

datarecommendedpublications[]authorbio
stringnullable

The author's short biography.

datarecommendedpublications[]authorphotoUrl
stringnullable

The author's profile photo URL.

The author's main badge, when there is one.

datarecommendedpublications[]authorbadgetype
stringnullable

The kind of badge, such as `bestseller`.

datarecommendedpublications[]authorbadgetier
integernullable

The badge tier, when it has one.

datarecommendedpublications[]authorbadgehandle
stringnullable

The handle the badge belongs to.

datarecommendedpublications[]authorbadgeservice
stringnullable

The service the badge comes from.

datarecommendedpublications[]authorbadgeurl
stringnullable

A link for the badge, when it has one.

datarecommendedpublications[]authorbadges
objectnullable

The author's reader status fields, when available.

datarecommendedpublications[]authorbestsellerTier
integernullable

The author's bestseller tier.

The author's primary publication, when there is one.

datarecommendedpublications[]authorprimaryPublicationid
integernullable

Numeric publication id.

datarecommendedpublications[]authorprimaryPublicationname
stringnullable

The publication's name.

datarecommendedpublications[]authorprimaryPublicationsubdomain
stringnullable

The publication's Substack subdomain.

datarecommendedpublications[]authorprimaryPublicationcustomDomain
stringnullable

The publication's custom domain, when it has one.

datarecommendedpublications[]authorprimaryPublicationlogoUrl
stringnullable

The publication's logo URL.

Approximate audience figures the publication prints. These are bands, not counts.

datarecommendedpublications[]audiencepaidLabel
stringnullable

The band Substack displays for paid subscribers.

datarecommendedpublications[]audiencepaidOrderOfMagnitude
integernullable

The order of magnitude behind the paid band.

datarecommendedpublications[]audiencetotalLabel
stringnullable

The band Substack displays for all subscribers.

datarecommendedpublications[]audiencetotalOrderOfMagnitude
integernullable

The order of magnitude behind the total band.

datarecommendedpublications[]audiencefreeLabel
stringnullable

The band Substack displays for free subscribers.

datarecommendedpublications[]audiencefreeShort
stringnullable

The short free-subscriber band.

datarecommendedpublications[]audiencechatMembersLabel
stringnullable

The band Substack displays for chat members.

People with a byline on the publication.

datarecommendedpublications[]contributors[]id
integernullable

Numeric user id.

datarecommendedpublications[]contributors[]name
stringnullable

The contributor's name.

datarecommendedpublications[]contributors[]handle
stringnullable

The contributor's handle.

datarecommendedpublications[]contributors[]role
stringnullable

The contributor's role on the publication.

datarecommendedpublications[]contributors[]owner
booleannullable

Whether the contributor owns the publication.

datarecommendedpublications[]contributors[]photoUrl
stringnullable

The contributor's photo URL.

datarecommendedpublications[]contributors[]bio
stringnullable

The contributor's short biography.

The contributor's badge.

datarecommendedpublications[]contributors[]badgetype
stringnullable

The kind of badge, such as `bestseller`.

datarecommendedpublications[]contributors[]badgetier
integernullable

The badge tier, when it has one.

datarecommendedpublications[]contributors[]badgehandle
stringnullable

The handle the badge belongs to.

datarecommendedpublications[]contributors[]badgeservice
stringnullable

The service the badge comes from.

datarecommendedpublications[]contributors[]badgeurl
stringnullable

A link for the badge, when it has one.

datarecommendedpublications[]contributors[]bestsellerTier
integernullable

The contributor's bestseller tier.

The publication's sections.

datarecommendedpublications[]sections[]id
integernullable

Numeric section id.

datarecommendedpublications[]sections[]name
stringnullable

The section's name.

datarecommendedpublications[]sections[]description
stringnullable

The section's description.

datarecommendedpublications[]sections[]slug
stringnullable

The section's URL slug.

datarecommendedpublications[]sections[]isPodcast
booleannullable

Whether the section is a podcast.

datarecommendedpublications[]sections[]isLive
booleannullable

Whether the section is a live stream.

datarecommendedpublications[]sections[]isDefaultOn
booleannullable

Whether the section is on by default.

datarecommendedpublications[]sections[]logoUrl
stringnullable

The section's logo URL.

datarecommendedpublications[]sections[]coverImageUrl
stringnullable

The section's cover image URL.

datarecommendedpublications[]sections[]hideFromNavbar
booleannullable

Whether the section is hidden from navigation.

datarecommendedpublications[]sections[]hidePostsFromPubListings
booleannullable

Whether the section's posts are hidden from publication lists.

Links the publication shows.

datarecommendedpublications[]links[]id
integernullable

Numeric link id.

datarecommendedpublications[]links[]url
string

The link.

datarecommendedpublications[]links[]platform
stringnullable

`apple_podcasts`, `spotify`, `youtube` or another label Substack uses.

datarecommendedpublications[]links[]sectionId
integernullable

The section the link belongs to, when it has one.

The subscription plans the publication offers.

datarecommendedpublications[]plans[]id
stringnullable

The plan's id.

datarecommendedpublications[]plans[]nickname
stringnullable

The plan's display name.

datarecommendedpublications[]plans[]amount
integernullable

Price in the currency's minor unit.

datarecommendedpublications[]plans[]currency
stringnullable

Currency code for the price.

datarecommendedpublications[]plans[]interval
stringnullable

`month`, `year` or Substack's own value.

datarecommendedpublications[]plans[]intervalCount
integernullable

How many intervals one charge covers.

datarecommendedpublications[]plans[]active
booleannullable

Whether the plan is on sale.

datarecommendedpublications[]plans[]founding
boolean

Whether this is a founding-member plan.

The publication's podcast, when it has one.

datarecommendedpublications[]podcastexists
booleannullable

Whether the publication has a podcast.

datarecommendedpublications[]podcasthasFreeEpisodes
booleannullable

Whether free episodes are available.

datarecommendedpublications[]podcasthasPaidEpisodes
booleannullable

Whether paid episodes are available.

datarecommendedpublications[]podcastartUrl
stringnullable

The podcast artwork URL.

datarecommendedpublications[]podcastbyline
stringnullable

The podcast byline.

datarecommendedpublications[]podcastdescription
stringnullable

The podcast description.

datarecommendedpublications[]podcastfeedUrl
stringnullable

The podcast feed URL.

datarecommendedpublications[]podcasttitle
stringnullable

The podcast title.

datarecommendedpublications[]podcastpaidEpisodeArtUrl
stringnullable

Artwork for paid episodes.

Publications featured on the homepage.

datarecommendedhomepageFeaturedPublications[]id
integer

Numeric publication id.

datarecommendedhomepageFeaturedPublications[]name
stringnullable

The publication's name.

datarecommendedhomepageFeaturedPublications[]subdomain
stringnullable

The publication's Substack subdomain.

datarecommendedhomepageFeaturedPublications[]customDomain
stringnullable

The publication's custom domain, when it has one.

datarecommendedhomepageFeaturedPublications[]apexDomain
stringnullable

The publication's apex domain, when it has one.

datarecommendedhomepageFeaturedPublications[]url
stringnullable

The publication's canonical base URL.

datarecommendedhomepageFeaturedPublications[]host
stringnullable

The host its pages are served from.

datarecommendedhomepageFeaturedPublications[]description
stringnullable

The publication's description.

datarecommendedhomepageFeaturedPublications[]language
stringnullable

The publication's language code.

datarecommendedhomepageFeaturedPublications[]kind
stringnullable

`newsletter`, `podcast` or Substack's own type.

datarecommendedhomepageFeaturedPublications[]createdAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedhomepageFeaturedPublications[]firstPostAt
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedhomepageFeaturedPublications[]hasPosts
booleannullable

Whether the publication has posts.

datarecommendedhomepageFeaturedPublications[]isExplicit
booleannullable

Whether the publication is marked explicit.

datarecommendedhomepageFeaturedPublications[]isInviteOnly
booleannullable

Whether the publication is invite-only.

datarecommendedhomepageFeaturedPublications[]isFlagged
booleannullable

Whether the publication is flagged.

datarecommendedhomepageFeaturedPublications[]noIndex
booleannullable

Whether search engines are asked not to index it.

datarecommendedhomepageFeaturedPublications[]isOnSubstack
booleannullable

Whether the publication is hosted by Substack.

datarecommendedhomepageFeaturedPublications[]commentsEnabled
booleannullable

Whether comments are enabled.

datarecommendedhomepageFeaturedPublications[]notesEnabled
booleannullable

Whether Notes are enabled.

datarecommendedhomepageFeaturedPublications[]defaultCommentSort
stringnullable

The default comment order.

datarecommendedhomepageFeaturedPublications[]annualDisabled
booleannullable

Whether annual plans are disabled.

datarecommendedhomepageFeaturedPublications[]monthlyDisabled
booleannullable

Whether monthly plans are disabled.

datarecommendedhomepageFeaturedPublications[]paymentsState
stringnullable

The publication's payments state.

datarecommendedhomepageFeaturedPublications[]freeTrialEnabled
booleannullable

Whether a free trial is offered.

datarecommendedhomepageFeaturedPublications[]pausedUntil
stringnullable

ISO 8601 timestamp, or null when Substack does not publish one.

datarecommendedhomepageFeaturedPublications[]emailBannerUrl
stringnullable

The email banner image URL.

datarecommendedhomepageFeaturedPublications[]copyright
stringnullable

The copyright line the publication prints.

datarecommendedhomepageFeaturedPublications[]logoUrl
stringnullable

The publication's logo URL.

datarecommendedhomepageFeaturedPublications[]wideLogoUrl
stringnullable

The publication's wide logo URL.

datarecommendedhomepageFeaturedPublications[]coverImageUrl
stringnullable

The publication's cover image URL.

datarecommendedhomepageFeaturedPublications[]foundingPlanName
stringnullable

The name of the founding-member plan.

datarecommendedhomepageFeaturedPublications[]hasRecommendations
booleannullable

Whether the publication recommends others.

The benefit lists for each subscription tier.

Benefits for free subscribers.

datarecommendedhomepageFeaturedPublications[]benefitsfree[]
stringoptional

Benefits for paid subscribers.

datarecommendedhomepageFeaturedPublications[]benefitspaid[]
stringoptional

Benefits for founding members.

datarecommendedhomepageFeaturedPublications[]benefitsfounding[]
stringoptional

The publication's main author.

datarecommendedhomepageFeaturedPublications[]authorid
integernullable

Numeric user id.

datarecommendedhomepageFeaturedPublications[]authorname
stringnullable

The name shown for the author.

datarecommendedhomepageFeaturedPublications[]authorhandle
stringnullable

The author's handle.

datarecommendedhomepageFeaturedPublications[]authorslug
stringnullable

The author's profile slug.

datarecommendedhomepageFeaturedPublications[]authorbio
stringnullable

The author's short biography.

datarecommendedhomepageFeaturedPublications[]authorphotoUrl
stringnullable

The author's profile photo URL.

The author's main badge, when there is one.

datarecommendedhomepageFeaturedPublications[]authorbadgetype
stringnullable

The kind of badge, such as `bestseller`.

datarecommendedhomepageFeaturedPublications[]authorbadgetier
integernullable

The badge tier, when it has one.

datarecommendedhomepageFeaturedPublications[]authorbadgehandle
stringnullable

The handle the badge belongs to.

datarecommendedhomepageFeaturedPublications[]authorbadgeservice
stringnullable

The service the badge comes from.

datarecommendedhomepageFeaturedPublications[]authorbadgeurl
stringnullable

A link for the badge, when it has one.

datarecommendedhomepageFeaturedPublications[]authorbadges
objectnullable

The author's reader status fields, when available.

datarecommendedhomepageFeaturedPublications[]authorbestsellerTier
integernullable

The author's bestseller tier.

The author's primary publication, when there is one.

datarecommendedhomepageFeaturedPublications[]authorprimaryPublicationid
integernullable

Numeric publication id.

datarecommendedhomepageFeaturedPublications[]authorprimaryPublicationname
stringnullable

The publication's name.

datarecommendedhomepageFeaturedPublications[]authorprimaryPublicationsubdomain
stringnullable

The publication's Substack subdomain.

datarecommendedhomepageFeaturedPublications[]authorprimaryPublicationcustomDomain
stringnullable

The publication's custom domain, when it has one.

datarecommendedhomepageFeaturedPublications[]authorprimaryPublicationlogoUrl
stringnullable

The publication's logo URL.

Approximate audience figures the publication prints. These are bands, not counts.

datarecommendedhomepageFeaturedPublications[]audiencepaidLabel
stringnullable

The band Substack displays for paid subscribers.

datarecommendedhomepageFeaturedPublications[]audiencepaidOrderOfMagnitude
integernullable

The order of magnitude behind the paid band.

datarecommendedhomepageFeaturedPublications[]audiencetotalLabel
stringnullable

The band Substack displays for all subscribers.

datarecommendedhomepageFeaturedPublications[]audiencetotalOrderOfMagnitude
integernullable

The order of magnitude behind the total band.

datarecommendedhomepageFeaturedPublications[]audiencefreeLabel
stringnullable

The band Substack displays for free subscribers.

datarecommendedhomepageFeaturedPublications[]audiencefreeShort
stringnullable

The short free-subscriber band.

datarecommendedhomepageFeaturedPublications[]audiencechatMembersLabel
stringnullable

The band Substack displays for chat members.

People with a byline on the publication.

datarecommendedhomepageFeaturedPublications[]contributors[]id
integernullable

Numeric user id.

datarecommendedhomepageFeaturedPublications[]contributors[]name
stringnullable

The contributor's name.

datarecommendedhomepageFeaturedPublications[]contributors[]handle
stringnullable

The contributor's handle.

datarecommendedhomepageFeaturedPublications[]contributors[]role
stringnullable

The contributor's role on the publication.

datarecommendedhomepageFeaturedPublications[]contributors[]owner
booleannullable

Whether the contributor owns the publication.

datarecommendedhomepageFeaturedPublications[]contributors[]photoUrl
stringnullable

The contributor's photo URL.

datarecommendedhomepageFeaturedPublications[]contributors[]bio
stringnullable

The contributor's short biography.

The contributor's badge.

datarecommendedhomepageFeaturedPublications[]contributors[]badgetype
stringnullable

The kind of badge, such as `bestseller`.

datarecommendedhomepageFeaturedPublications[]contributors[]badgetier
integernullable

The badge tier, when it has one.

datarecommendedhomepageFeaturedPublications[]contributors[]badgehandle
stringnullable

The handle the badge belongs to.

datarecommendedhomepageFeaturedPublications[]contributors[]badgeservice
stringnullable

The service the badge comes from.

datarecommendedhomepageFeaturedPublications[]contributors[]badgeurl
stringnullable

A link for the badge, when it has one.

datarecommendedhomepageFeaturedPublications[]contributors[]bestsellerTier
integernullable

The contributor's bestseller tier.

The publication's sections.

datarecommendedhomepageFeaturedPublications[]sections[]id
integernullable

Numeric section id.

datarecommendedhomepageFeaturedPublications[]sections[]name
stringnullable

The section's name.

datarecommendedhomepageFeaturedPublications[]sections[]description
stringnullable

The section's description.

datarecommendedhomepageFeaturedPublications[]sections[]slug
stringnullable

The section's URL slug.

datarecommendedhomepageFeaturedPublications[]sections[]isPodcast
booleannullable

Whether the section is a podcast.

datarecommendedhomepageFeaturedPublications[]sections[]isLive
booleannullable

Whether the section is a live stream.

datarecommendedhomepageFeaturedPublications[]sections[]isDefaultOn
booleannullable

Whether the section is on by default.

datarecommendedhomepageFeaturedPublications[]sections[]logoUrl
stringnullable

The section's logo URL.

datarecommendedhomepageFeaturedPublications[]sections[]coverImageUrl
stringnullable

The section's cover image URL.

datarecommendedhomepageFeaturedPublications[]sections[]hideFromNavbar
booleannullable

Whether the section is hidden from navigation.

datarecommendedhomepageFeaturedPublications[]sections[]hidePostsFromPubListings
booleannullable

Whether the section's posts are hidden from publication lists.

Links the publication shows.

datarecommendedhomepageFeaturedPublications[]links[]id
integernullable

Numeric link id.

datarecommendedhomepageFeaturedPublications[]links[]url
string

The link.

datarecommendedhomepageFeaturedPublications[]links[]platform
stringnullable

`apple_podcasts`, `spotify`, `youtube` or another label Substack uses.

datarecommendedhomepageFeaturedPublications[]links[]sectionId
integernullable

The section the link belongs to, when it has one.

The subscription plans the publication offers.

datarecommendedhomepageFeaturedPublications[]plans[]id
stringnullable

The plan's id.

datarecommendedhomepageFeaturedPublications[]plans[]nickname
stringnullable

The plan's display name.

datarecommendedhomepageFeaturedPublications[]plans[]amount
integernullable

Price in the currency's minor unit.

datarecommendedhomepageFeaturedPublications[]plans[]currency
stringnullable

Currency code for the price.

datarecommendedhomepageFeaturedPublications[]plans[]interval
stringnullable

`month`, `year` or Substack's own value.

datarecommendedhomepageFeaturedPublications[]plans[]intervalCount
integernullable

How many intervals one charge covers.

datarecommendedhomepageFeaturedPublications[]plans[]active
booleannullable

Whether the plan is on sale.

datarecommendedhomepageFeaturedPublications[]plans[]founding
boolean

Whether this is a founding-member plan.

The publication's podcast, when it has one.

datarecommendedhomepageFeaturedPublications[]podcastexists
booleannullable

Whether the publication has a podcast.

datarecommendedhomepageFeaturedPublications[]podcasthasFreeEpisodes
booleannullable

Whether free episodes are available.

datarecommendedhomepageFeaturedPublications[]podcasthasPaidEpisodes
booleannullable

Whether paid episodes are available.

datarecommendedhomepageFeaturedPublications[]podcastartUrl
stringnullable

The podcast artwork URL.

datarecommendedhomepageFeaturedPublications[]podcastbyline
stringnullable

The podcast byline.

datarecommendedhomepageFeaturedPublications[]podcastdescription
stringnullable

The podcast description.

datarecommendedhomepageFeaturedPublications[]podcastfeedUrl
stringnullable

The podcast feed URL.

datarecommendedhomepageFeaturedPublications[]podcasttitle
stringnullable

The podcast title.

datarecommendedhomepageFeaturedPublications[]podcastpaidEpisodeArtUrl
stringnullable

Artwork for paid episodes.

datarecommendedUnavailable
boolean

True when the recommended view was temporarily unavailable, so `recommended: null` means unavailable, not empty.

Metadata describing the request and billing outcome.

metarequestId
string

Unique request identifier for tracing this API call.

min 1 chars

metacreditsCharged
integer

Credits charged for this request.

≥ 0

metaversion
string

Public API version that served the response.

one of: v1

Code example

curl "https://api.socialfetch.dev/v1/substack/categories" \
  -H "x-api-key: YOUR_API_KEY"

Responses

Substack categories.