How to get a Reddit post transcript
GET request to /v1/reddit/post-transcript with your input. You get clean JSON back in seconds for 2 credits per call — no OAuth, scraping or platform SDKs. Written post text — title, body and top comments. Not a speech transcript. Flat 2 credits.How to get a Reddit post transcript (step by step)
- 1
Get a free API key
Create a free Captapi account (100 credits, no card) and generate an API key from the dashboard.
- 2
Call the Reddit Post Transcript API
Send an authenticated GET request to /v1/reddit/post-transcript with your input. No OAuth, no scraping setup.
- 3
Read the JSON response
Parse the clean JSON response. Pass cache=true for a free 24h cache hit; default is always fresh.
Code example
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_..."What the response looks like
{
"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",
"name": "t3_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": null,
"subreddit": "space",
"author": "Low-Mathematician137",
"authorFullname": "t2_hkovnh8i",
"score": 0,
"upvoteRatio": 0.421875,
"scoreHidden": null,
"comments": 64,
"subscriberCount": null,
"isVideo": false,
"publishedAt": "2026-07-03T14:04:13.000Z",
"flair": "Discussion",
"nsfw": false,
"thumbnail": null,
"crosspostOf": null
},
"transcript": "Title: Radiation exposure may become the biggest challenge for future Moon and Mars missions\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\ndegh555: The OP is observing that future manned missions will require significantly longer durations beyond the protection of the magnetosphere. Apollo 11 lasted 8 days, a trip to mars would last 60-90 times longer.\n\niqisoverrated: Trips that last longer will have significantly more supplies (particularly water) and infrastructure along - which can be packed around the living space to provide extra protection.\n\nAdmirable_Site_8337: “…..seems to receive little public discussion……”\n\nSigh………………\n\n………….\n\n…………\n\nLioraB: Line the ships with astrophage.\n\niqisoverrated: I've been reading more about Artemis and future Mars mission planning, and one aspect that seems to receive surprisingly little public discussion is radiation exposure beyond low Earth …",
"timingSource": "none",
"estimatedReadSeconds": 582,
"transcriptSegments": [
{
"speaker": "post",
"text": "Title: Radiation exposure may become the biggest challenge for future Moon and Mars missions",
"index": 0,
"wordCount": 14,
"charStart": 0,
"charEnd": 92
},
{
"speaker": "EffingWasps",
"text": "EffingWasps: Insert that very recent but weirdly broadly applicable “this has been talked about extensively you’re just 21” meme",
"index": 1,
"wordCount": 19,
"charStart": 94,
"charEnd": 222
},
{
"speaker": "b407driver",
"text": "b407driver: Become? It has always been the greatest (unsolved) challenge.",
"index": 2,
"wordCount": 10,
"charStart": 224,
"charEnd": 297
},
{
"speaker": "Waarm",
"text": "Waarm: The current biggest challenge is funding.",
"index": 3,
"wordCount": 7,
"charStart": 299,
"charEnd": 347
},
{
"speaker": "degh555",
"text": "degh555: The OP is observing that future manned missions will require significantly longer durations beyond the protection of the magnetosphere. Apollo 11 lasted 8 days, a trip to mars would last 60-90 times longer.",
"index": 4,
"wordCount": 34,
"charStart": 349,
"charEnd": 564
},
{
"speaker": "iqisoverrated",
"text": "iqisoverrated: Trips that last longer will have significantly more supplies (particularly water) and infrastructure along - which can be packed around the living space to provide extra protection.",
"index": 5,
"wordCount": 27,
"charStart": 566,
"charEnd": 762
},
{
"speaker": "Admirable_Site_8337",
"text": "Admirable_Site_8337: “…..seems to receive little public discussion……”\n\nSigh………………\n\n………….\n\n…………",
"index": 6,
"wordCount": 8,
"charStart": 764,
"charEnd": 858
},
{
"speaker": "LioraB",
"text": "LioraB: Line the ships with astrophage.",
"index": 7,
"wordCount": 6,
"charStart": 860,
"charEnd": 899
}
],
"wordCount": 1941,
"commentsIncluded": 25
}
}Billing metadata (credits charged, cache hit/miss) is returned in the X-Captapi-Credits and X-Captapi-Cache response headers.
Request 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). Flat 2 credits per call. |
| cache | boolean | No | Set true to serve from the 24h response cache (0 credits on hit). Default false — always fetch fresh. |
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 cache (0 credits on hit); default is always fresh. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. 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 access, rate limits, retries, and authentication for you.
Is this the video's speech?
No. It returns the post's written content — title, body and top comments. Reddit does not expose speech transcripts for v.redd.it video. timingSource is always none; offsets are characters, not timestamps.
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 cache (0 credits on hit); default is always fresh. Selected profile endpoints also accept cacheMaxAge=1d|3d|7d|14d|30d. Use it for analytics, monitoring, and content automation.
Ready to get a Reddit post transcript?
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Get your free API key