GET /v1/reddit/subreddit-details

Reddit Subreddit Details API

Get a subreddit — title, description, subscribers, and community rules signals as structured JSON.

1 credit per request

Try in Playground Get your API key — free Read the docs

TL;DR

Get a subreddit — title, description, subscribers, and community rules signals as structured JSON. The Reddit Subreddit Details API (Reddit) is a single authenticated GET request to /v1/reddit/subreddit-details that responds with clean JSON and costs 1 credit. Pass cache=true for a free 24h cache hit; default is always fresh. Start with 100 free credits — no credit card.

What is the Reddit Subreddit Details API?

The Reddit Subreddit Details API lets you fetch full metadata and key stats for Reddit subreddit details with a single REST call. No OAuth, no infrastructure to maintain, and no platform SDKs — send the request, get clean structured JSON back. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh.

What you get

Subreddit Details fields as clean structured JSON
IDs, URLs, and titles where the platform exposes them
Engagement or popularity signals when available
Stable IDs for joining with other endpoints

Try it

Open in Playground

Fill in the parameters below and copy a ready-to-run request, or open the live Playground to run it against your account (no API key paste).

Parameters

url*stringSubreddit URL, r/name, or bare name, e.g. r/technology. The URL platform must match this endpoint's platform. Do not pass cross-platform URLs, e.g. YouTube to TikTok, Instagram to Facebook, LinkedIn to X/Twitter, or Pinterest to Rumble.cacheoptionalbooleanSet true to serve from the 24h response cache. Default false — always fetch fresh data.

API keyoptionalPaste your key to get a ready-to-run snippet. It stays in your browser.Sign in to run live

curl "https://api.captapi.com/v1/reddit/subreddit-details?url=https%3A%2F%2Fwww.reddit.com%2Fr%2Fspace" \
  -H "Authorization: Bearer capt_live_..."
# or: -H "x-api-key: capt_live_..."

Edit the parameters and the code updates instantly. Switch languages and hit copy.

Example response

{
  "success": true,
  "data": {
    "platform": "reddit",
    "name": "space",
    "url": "https://www.reddit.com/r/space",
    "title": "/r/space: news, articles and discussion",
    "description": "Share & discuss informative content on:\n\n* Astrophysics\n* Cosmology\n* Space Exploration\n* Planetary Science\n* Astrobiology",
    "members": 27936127,
    "category": "Lifestyles",
    "language": "en",
    "type": "public",
    "createdAt": "1201327674.0",
    "nsfw": false,
    "icon": "https://styles.redditmedia.com/t5_2qh87/styles/communityIcon_ub69d1lpjlf51.png",
    "banner": "https://styles.redditmedia.com/t5_2qh87/styles/bannerBackgroundImage_n7bxapsg3kq81.png"
  }
}

Billing metadata is returned in response headers: X-Captapi-Credits (credits charged), X-Captapi-Cache (hit or miss), and X-Captapi-Source. Failed requests (4xx/5xx) are never charged. See the full list of error codes in the error reference.

Response structure

A successful call returns success, cached, creditsUsed, and a data object with the following fields:

Top-level fields

platformPlatform identifier (e.g. youtube, instagram).
nameName of the item or account.
urlCanonical URL of the item.
titleTitle of the item.
descriptionDescription text.
membersMember count.
categoryCategory of the item.
languageDetected or requested language code.
typeContent type of the item.
createdAtCreation date (ISO 8601).
nsfwWhether the content is marked NSFW.
iconIcon URL.
bannerBanner image URL.

Parameters

Name	Type	Required	Description
url	string	Yes	Subreddit URL, r/name, or bare name, e.g. r/technology. The URL platform must match this endpoint's platform. Do not pass cross-platform URLs, e.g. YouTube to TikTok, Instagram to Facebook, LinkedIn to X/Twitter, or Pinterest to Rumble.
cache	boolean	No	Set true to serve from the 24h response cache. Default false — always fetch fresh data.

Authentication: send your key as Authorization: Bearer capt_live_.... A typical call costs 1 credit. Pass cache=true for a free 24h cache hit; default is always fresh.

Using an AI agent? This endpoint is the MCP tool reddit_subreddit_details via @captapi/mcp. Set it up →

How it works

1. Sign up — get 100 free credits, no card required.
2. Create a key from your dashboard.
3. Send one request to /v1/reddit/subreddit-details and parse the JSON response.

Use cases

Analytics

Track views, likes, and engagement over time.

Competitor Monitoring

Benchmark the performance of other creators.

Dashboards

Power reporting and BI with real metadata.

Content Curation

Filter and rank videos by performance.

Frequently asked questions

What does the Reddit Subreddit Details API do?+

The Reddit Subreddit Details API lets you fetch full metadata and key stats from a public Reddit subreddit details using one GET request to /v1/reddit/subreddit-details. It returns clean JSON — no OAuth or infrastructure setup required.

How many credits does the Reddit Subreddit Details API cost?+

Each successful call costs 1 credit. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh. Failed or empty results are never charged.

Do I need a Reddit API key or OAuth?+

No. A single Captapi key works across every platform Captapi supports — YouTube, TikTok, Instagram, Facebook, Twitter/X, Reddit, Threads, Bluesky, Pinterest, LinkedIn, Rumble, Spotify, Kwai, and more. We handle proxies, rate limits, retries, and authentication for you.

Is the Reddit Subreddit Details API suitable for production use?+

Yes. It is a stable REST endpoint with predictable JSON and automatic retries. Pass cache=true to serve from the 24h shared cache (0 credits on hit); default is always fresh. Use it for analytics, monitoring, and content automation.

More Reddit APIs

Reddit Subreddit Posts API Reddit Post Details API Reddit Post Comments API Reddit Post Transcript API Reddit Search API Reddit Subreddit Search API

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