Reddit API Capability

List Post Comments

List public comments from one Reddit thread by canonical post URL, with cursor pagination.

Capability ID reddit.post.comments.list

Cost 1 credit per request

Maximum runtime 30 seconds

# List Post Comments

List public comments from one Reddit thread by canonical post URL, with cursor pagination.

- Platform: [Reddit](https://docs.upscrape.com/docs/platforms/reddit)
- Capability ID: `reddit.post.comments.list`
- Cost: 1 credit per request
- Maximum runtime: 30 seconds
- Execute endpoint: `POST https://data.upscrape.com/execute`

## Request

Use the exact public capability ID in the shared execute envelope.

```bash
curl --request POST \
  --url https://data.upscrape.com/execute \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --header "Content-Type: application/json" \
  --header "Prefer: wait=30" \
  --data '{
  "input": {
    "limit": 25,
    "url": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/"
  },
  "capability": "reddit.post.comments.list"
}'
```

## Input

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `after` | `string` | No | Opaque cursor from a previous result's next field. |
| `limit` | `integer` | No | Page size (default 50). |
| `url` | `string` | Yes | Absolute reddit.com thread URL. |

### Example input

```json
{
  "limit": 25,
  "url": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/"
}
```

## Response

Successful output is returned in `results[0].data`. Raw platform output is intentionally open-ended and may evolve with the upstream source.

### Illustrative sample output

This redacted fixture is an example, not a fixed response schema.

```json
{
  "items": [
    {
      "author": "emily_in_boots",
      "body": "I'm a developer who writes both devvit and PRAW bots. It's completely impossible to migrate mission critical bots we depend on to devvit. I have spoken to pl00h and other devvit admins about this as well. I use both praw and devvit and choose the best tool for the job, but often that is still praw. We need a fully relational database. We need the compute power to run LLMs - would be very expensive…",
      "created_utc": 1785948996,
      "id": "t1_p1w1jph",
      "nsfw": false,
      "parent_permalink": null,
      "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform",
      "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w1jph/",
      "score": 0,
      "subreddit": "redditdev",
      "type": "comment"
    },
    {
      "author": "baseballlover723",
      "body": "Lastly, my bots reflect countless hours of coding and an enormous repository of code that would take years to port. Yeah, we have half a decade worth of investment into tools built on the public API. And the contract they offered me was terrible. I sure hope nobody else signed that contract for a mod tool port (and if you did, you should not say anything, because that would breach your contract). …",
      "created_utc": 1785950432,
      "id": "t1_p1w7dw0",
      "nsfw": false,
      "parent_permalink": null,
      "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform",
      "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w7dw0/",
      "score": 0,
      "subreddit": "redditdev",
      "type": "comment"
    },
    {
      "author": "abrownn",
      "body": "Excellent comment and this reflects many of my concerns as well, namely point 4, 5, 6, and 7. Many mods make atypical mod bots/tools that wouldn't be at home on the Devvit platform that are critical to moderation and keeping communities safe.",
      "created_utc": 1785950800,
      "id": "t1_p1w8war",
      "nsfw": false,
      "parent_permalink": null,
      "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform",
      "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w8war/",
      "score": 0,
      "subreddit": "redditdev",
      "type": "comment"
    }
  ],
  "next": "t1_p3j3e9c"
}
```
### Illustrative output fields

Derived from the sample above for orientation only. These fields are not a fixed response schema.

| Path | Observed type | Example |
| --- | --- | --- |
| `items` | `array` | 3 items |
| `items` | `array` | 3 items |
| `next` | `string` | t1_p3j3e9c |

## Execution behavior

A `200` response completed inline. A `202` response was queued; poll `GET /jobs/{id}` until the job reaches `completed` or `failed`. Use an `Idempotency-Key` when retrying must not create a duplicate logical job.

## Related documentation

- [Authentication](https://docs.upscrape.com/docs/api/authentication)
- [Jobs and results](https://docs.upscrape.com/docs/api/jobs)
- [Errors and retries](https://docs.upscrape.com/docs/api/errors)
- [Idempotency](https://docs.upscrape.com/docs/api/idempotency)

POST /execute Shared execution endpoint

Input parameters

after string optional

Opaque cursor from a previous result's next field.

limit integer optional

Page size (default 50).

Example 25

url string required

Absolute reddit.com thread URL.

Example https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/

Response

Successful output is returned in results[0].data. Raw platform output is intentionally open-ended and may evolve with the upstream source.

Illustrative sample The full redacted fixture is shown in the response panel.

Illustrative output fields

Derived from the sample above for orientation only. These observed fields are not a fixed response schema.

Path	Observed type	Example
`items`	`array`	3 items
`items`	`array`	3 items
`next`	`string`	t1_p3j3e9c

Execution behavior

A 200 response completed inline. A 202 response was queued; poll GET /jobs/:id until the job reaches completed or failed.

curl --request POST \ --url https://data.upscrape.com/execute \ --header "Authorization: Bearer YOUR_API_KEY" \ --header "Content-Type: application/json" \ --header "Prefer: wait=30" \ --data '{ "input": { "limit": 25, "url": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/" }, "capability": "reddit.post.comments.list" }'

import json import requests payload = json.loads(r'''{ "input": { "limit": 25, "url": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/" }, "capability": "reddit.post.comments.list" }''') response = requests.post( "https://data.upscrape.com/execute", headers={ "Authorization": "Bearer YOUR_API_KEY", "Content-Type": "application/json", "Prefer": "wait=30", }, json=payload, ) response.raise_for_status() print(json.dumps(response.json(), indent=2))

{ "items": [ { "author": "emily_in_boots", "body": "I'm a developer who writes both devvit and PRAW bots. It's completely impossible to migrate mission critical bots we depend on to devvit. I have spoken to pl00h and other devvit admins about this as well. I use both praw and devvit and choose the best tool for the job, but often that is still praw. We need a fully relational database. We need the compute power to run LLMs - would be very expensive…", "created_utc": 1785948996, "id": "t1_p1w1jph", "nsfw": false, "parent_permalink": null, "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform", "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w1jph/", "score": 0, "subreddit": "redditdev", "type": "comment" }, { "author": "baseballlover723", "body": "Lastly, my bots reflect countless hours of coding and an enormous repository of code that would take years to port. Yeah, we have half a decade worth of investment into tools built on the public API. And the contract they offered me was terrible. I sure hope nobody else signed that contract for a mod tool port (and if you did, you should not say anything, because that would breach your contract). …", "created_utc": 1785950432, "id": "t1_p1w7dw0", "nsfw": false, "parent_permalink": null, "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform", "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w7dw0/", "score": 0, "subreddit": "redditdev", "type": "comment" }, { "author": "abrownn", "body": "Excellent comment and this reflects many of my concerns as well, namely point 4, 5, 6, and 7. Many mods make atypical mod bots/tools that wouldn't be at home on the Devvit platform that are critical to moderation and keeping communities safe.", "created_utc": 1785950800, "id": "t1_p1w8war", "nsfw": false, "parent_permalink": null, "parent_title": "Our Plans for the Future of Reddit’s Public Data API and the Developer Platform", "permalink": "https://www.reddit.com/r/redditdev/comments/1vgbm9c/our_plans_for_the_future_of_reddits_public_data/p1w8war/", "score": 0, "subreddit": "redditdev", "type": "comment" } ], "next": "t1_p3j3e9c" }