GET /v1/reddit/post-transcript

Reddit Post Transcript API

Get a Reddit post's discussion as readable text — title, body, and comments in one transcript-style payload. Flat 2 credits per call.

2 credits per request

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

TL;DR

Get a Reddit post's discussion as readable text — title, body, and comments in one transcript-style payload. Flat 2 credits per call. The Reddit Post Transcript API (Reddit) is a single authenticated GET request to /v1/reddit/post-transcript that responds with clean JSON and costs 2 credits. 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 Post Transcript API?

Paste a Reddit post URL and get the discussion as structured text: the post title and body plus comments flattened into a transcript-style response. This is discussion text, not speech-to-text from a video. Flat 2 credits per call.

What you get

Full transcript text with start/end timestamps when available
Auto-detected language and segment count
AI audio transcription fallback when no captions exist
Clean JSON ready for search, subtitles, or AI pipelines

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*stringReddit post URL. 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.limitoptionalintegerMax items to return (default 50, max 200). Billed per result.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/post-transcript?url=https%3A%2F%2Fwww.reddit.com%2Fr%2Fspace%2Fcomments%2F1umfd43%2Fradiation_exposure_may_become_the_biggest%2F" \
  -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",
    "url": "https://www.reddit.com/r/space/comments/1umfd43/radiation_exposure_may_become_the_biggest/",
    "post": {
      "platform": "reddit",
      "id": "1umfd43",
      "url": "https://www.reddit.com/r/space/comments/1umfd43/radiation_exposure_may_become_the_biggest/",
      "title": "Radiation exposure may become the biggest challenge for future Moon and Mars missions",
      "text": "[removed]",
      "subreddit": "space",
      "author": "Low-Mathematician137",
      "upvotes": 0,
      "comments": 65,
      "publishedAt": "2026-07-03T14:04:13+00:00",
      "flair": "Discussion",
      "nsfw": false,
      "thumbnail": null
    },
    "transcript": "Title: Radiation exposure may become the biggest challenge for future Moon and Mars missions\n\n[removed]\n\nEffingWasps: Insert that very recent but weirdly broadly applicable “this has been talked about extensively you’re just 21” meme\n\nb407driver: Become? It has always been the greatest (unsolved) challenge.\n\nWaarm: The current biggest challenge is funding.\n\nAdmirable_Site_8337: “…..seems to receive little public discussion……”\n\nSigh………………\n\n………….\n\n…………\n\nLioraB: Line the ships with astrophage.",
    "transcriptSegments": [
      {
        "speaker": "post",
        "text": "Radiation exposure may become the biggest challenge for future Moon and Mars missions",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "Low-Mathematician137",
        "text": "[removed]",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "EffingWasps",
        "text": "Insert that very recent but weirdly broadly applicable “this has been talked about extensively you’re just 21” meme",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "b407driver",
        "text": "Become? It has always been the greatest (unsolved) challenge.",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      },
      {
        "speaker": "Waarm",
        "text": "The current biggest challenge is funding.",
        "start": 0,
        "duration": 0,
        "timestamp": "00:00"
      }
    ],
    "wordCount": 67,
    "segments": 7,
    "commentsIncluded": 5
  }
}

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).
urlCanonical URL of the item.
transcriptComplete text transcript.
wordCountTotal number of words in the transcript.
segmentsTranscript segment count, or sponsor segment list on video-sponsors endpoints.
commentsIncludedComments included. Example: 5.

Post

The post object contains:

platformPlatform identifier (e.g. youtube, instagram).
idStable platform ID for the item.
urlCanonical URL of the item.
titleTitle of the item.
textText content.
subredditSubreddit the post belongs to.
authorAuthor name or handle.
upvotesUpvote count.
commentsComment count.
publishedAtPublish date (ISO 8601).
flairPost flair.
nsfwWhether the content is marked NSFW.
thumbnailThumbnail image URL.

Transcript segments

Each item in transcriptSegments contains:

speakerSpeaker label for the segment.
textText content.
startStart time in seconds.
durationLength in seconds.
timestampHuman-readable timestamp (MM:SS format).

Parameters

Name	Type	Required	Description
url	string	Yes	Reddit post URL. 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.
limit	integer	No	Max items to return (default 50, max 200). Billed per result.
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 2 credits. Pass cache=true for a free 24h cache hit; default is always fresh.

Using an AI agent? This endpoint is the MCP tool reddit_post_transcript 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/post-transcript and parse the JSON response.

Use cases

Accessibility

Provide captions and transcripts for hearing-impaired users.

Content Analysis

Analyze spoken content for keywords, topics, and sentiment.

Search & Discovery

Make video content searchable by text.

Content Creation

Extract quotes and key phrases from videos.

Language Learning

Provide text alongside audio for language learners.

Research

Analyze large volumes of video content efficiently.

SEO

Extract text content for search engine optimization.

Frequently asked questions

What does the Reddit Post Transcript API do?+

The Reddit Post Transcript API lets you extract the full, timestamped transcript from a public Reddit post using one GET request to /v1/reddit/post-transcript. It returns clean JSON — no OAuth or infrastructure setup required.

How many credits does the Reddit Post Transcript API cost?+

Each successful call costs 2 credits. 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.

What if the Reddit post has no captions?+

When no captions are available, Captapi transcribes the audio with AI (Whisper) automatically, so you still get a usable transcript.

Is the Reddit Post Transcript 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 Search API Reddit Subreddit Details API Reddit Subreddit Search API

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