> **For coding agents and LLMs:** This is one page from the Social Fetch docs (markdown export). The sections below mirror the orientation block in [`/llms.txt`](https://www.socialfetch.dev/llms.txt); use [`/llms.json`](https://www.socialfetch.dev/llms.json) when you need a structured operation inventory. The catalog covers documented operations with on-site reference pages.

## This page

- **On-site (HTML):** [https://www.socialfetch.dev/docs/api/v1/facebook/posts/comments/get](https://www.socialfetch.dev/docs/api/v1/facebook/posts/comments/get)
- **Markdown (.mdx) URL:** [https://www.socialfetch.dev/docs/api/v1/facebook/posts/comments/get.mdx](https://www.socialfetch.dev/docs/api/v1/facebook/posts/comments/get.mdx)

## API base URL and authentication

- **API origin (from OpenAPI `servers`):** `https://api.socialfetch.dev`
- **Authentication:** send `x-api-key: sfk_...` on `/v1/**` routes unless the operation is explicitly anonymous (check OpenAPI `security`, the [API reference hub](https://www.socialfetch.dev/docs/api.mdx), [`/llms.txt`](https://www.socialfetch.dev/llms.txt), or [`/llms.json`](https://www.socialfetch.dev/llms.json) for each route).
- **OpenAPI JSON:** [https://www.socialfetch.dev/openapi.json](https://www.socialfetch.dev/openapi.json)

## Recommended docs entrypoints (this site)

- [Documentation overview](https://www.socialfetch.dev/docs.mdx) — top-level orientation (markdown).
- [Quickstart](https://www.socialfetch.dev/docs/quickstart.mdx) — authenticate with `x-api-key`, validate auth with `whoami`, and understand the JSON envelope.
- [SDK](https://www.socialfetch.dev/docs/sdk.mdx) — official TypeScript SDK guide, including `SocialFetchClient`, `Result`, and `unwrap()`.
- [SDK reference](https://www.socialfetch.dev/docs/sdk-reference.mdx) — exhaustive SDK method inventory and route mapping for agents, tooling, and power users.
- [Choose the right endpoint](https://www.socialfetch.dev/docs/choose-endpoint.mdx) — task-oriented route selection for smoke tests, profiles, list endpoints, and single-item lookups.
- [Capability matrix](https://www.socialfetch.dev/docs/capability-matrix.mdx) — fast comparison of identifiers, pagination, outcomes, media download, and SDK coverage.
- [`/llms.json`](https://www.socialfetch.dev/llms.json) — structured machine-readable operation inventory with parameter names, pagination, outcomes, credits, and SDK mapping.
- [API reference hub](https://www.socialfetch.dev/docs/api.mdx) — human-friendly index of operations with links into generated pages.
- [Errors](https://www.socialfetch.dev/docs/errors.mdx) — shared error envelope and HTTP status guidance.
- [Credits](https://www.socialfetch.dev/docs/credits.mdx) — metering, `402`, and planning batch jobs.
- Outcome semantics such as `found`, `not_found`, and `private` are documented in [Errors](https://www.socialfetch.dev/docs/errors.mdx) and on operation pages when present in the OpenAPI contract.

## Markdown docs convention

- Every docs page has a markdown twin: append **`.mdx`** to the docs pathname (for example `/docs/quickstart` → `/docs/quickstart.mdx`).
- Agents that send `Accept: text/markdown` on `/docs/**` HTML URLs may receive markdown directly (same URL, `Vary: Accept`).

---
# List Facebook post or reel comments (https://www.socialfetch.dev/docs/api/v1/facebook/posts/comments/get)

## Summary

Lists top-level comments for a public Facebook post or reel URL with optional cursor-based pagination.

**Tags:** `Facebook`

## HTTP

- **Method:** GET
- **Path:** `/v1/facebook/posts/comments`
- **Base URL:** `https://api.socialfetch.dev`

## Capability summary

- **SDK mapping:** `client.facebook.getPostComments({ url?, cursor?, feedbackId? })`
- **Accepted identifiers:** `url` (query)
- **Pagination:** cursor via `cursor`, next cursor: `data.page.nextCursor`, has more: `data.page.hasMore`
- **Business outcome field:** `data.lookupStatus` with values `found`, `not_found`

## Credits

- **Base:** 1 credit per successful lookup.
- **Maximum on success (200):** 1 credit.
- **Normalization failure (502):** 1 credit charged.
- **Authoritative field:** `meta.creditsCharged`.

## Authentication

- **`x-api-key`**: API key (`sfk_...`)

## Parameters

### `url` (query)

- **Required:** no
- **Constraints:** type `string`; minLength: 1; maxLength: 4096
- **Description:** Link to the Facebook post or reel whose comments should be listed.

### `cursor` (query)

- **Required:** no
- **Constraints:** type `string`; minLength: 1
- **Description:** Opaque cursor from a previous response to fetch the next page.

### `feedbackId` (query)

- **Required:** no
- **Constraints:** type `string`; minLength: 1
- **Description:** Optional Facebook feedback identifier for the target post; when available it can improve lookup performance.

## Pagination

This endpoint uses **cursor-based pagination** via the `cursor` query parameter.

- Read **hasMore** from `data.page.hasMore`.
- When that value is `true`, read **nextCursor** from `data.page.nextCursor` and pass it as the `cursor` query parameter on the **next** request (URL-encode when building a query string).
- Omit `cursor` on the **first** request.
- Stop when **hasMore** is `false` or **nextCursor** is null (end of list).

## Responses (status codes)

- **200**: Comment listing result. Check `data.lookupStatus` for `found` or `not_found`.
- **400**: Invalid request
- **401**: Missing or invalid API key
- **402**: Insufficient credits
- **500**: Unexpected or billing error
- **502**: Lookup could not be completed from the response (unexpected or invalid data).
- **503**: Service temporarily unavailable; safe to retry with backoff.

## Response body (200)

Comment listing result. Check `data.lookupStatus` for `found` or `not_found`.

### Field outline

- **data** (required) — type `object`. Endpoint-specific response payload.
  - **lookupStatus** (required) — type `string`; enum: found, not_found. Whether the post or reel was resolved for this request.
  - **comments** (required) — type `array`. Top-level comments for the resolved post or reel.
    - _items:_
      - **id** (required) — type `string`; minLength: 1. Stable identifier for the comment.
      - **text** (required) — type `string`. Comment text.
      - **createdAt** (required) — type `string`. ISO-8601 timestamp when the comment was created.
      - **replyCount** (required) — type `integer`; minimum: 0. Direct reply count for the comment thread.
      - **reactionCount** (required) — type `integer`; minimum: 0. Total reaction count on the comment.
      - **author** (required) — type `object`. Comment author.
        - **name** (required) — type `string`; minLength: 1. Display name of the commenter.
        - **platformUserId** (optional) — type `string`. Platform-specific commenter id when available.
        - **shortName** (required) — type `string`; nullable. Short display name for the commenter when available.
  - **page** (required) — type `object`. Pagination information for this response.
    - **nextCursor** (required) — type `string`; nullable. Cursor to pass in the next request when more pages exist.
    - **hasMore** (required) — type `boolean`. Whether another page of comments is available.
- **meta** (required) — type `object`. Metadata describing the request and billing outcome.
  - **requestId** (required) — type `string`; minLength: 1. Unique request identifier for tracing this API call.
  - **creditsCharged** (required) — type `integer`; minimum: 0. Credits charged for this request.
  - **version** (required) — type `string`; enum: v1. Public API version that served the response.

### Example JSON (found)

```json
{
  "data": {
    "lookupStatus": "found",
    "comments": [
      {
        "id": "Y29tbWVudDox",
        "text": "Great post.",
        "createdAt": "2026-04-20T05:10:39.000Z",
        "replyCount": 0,
        "reactionCount": 10,
        "author": {
          "name": "Example User",
          "platformUserId": "100012345678901",
          "shortName": "Example"
        }
      }
    ],
    "page": {
      "nextCursor": "opaque-next-page-cursor",
      "hasMore": true
    }
  },
  "meta": {
    "requestId": "req_01example",
    "creditsCharged": 1,
    "version": "v1"
  }
}
```

### Example JSON (no_comments)

```json
{
  "data": {
    "lookupStatus": "found",
    "comments": [],
    "page": {
      "nextCursor": null,
      "hasMore": false
    }
  },
  "meta": {
    "requestId": "req_01example_nc",
    "creditsCharged": 1,
    "version": "v1"
  }
}
```

### Example JSON (not_found)

```json
{
  "data": {
    "lookupStatus": "not_found",
    "comments": [],
    "page": {
      "nextCursor": null,
      "hasMore": false
    }
  },
  "meta": {
    "requestId": "req_01example_nf",
    "creditsCharged": 1,
    "version": "v1"
  }
}
```

### Machine-readable error codes

When an error JSON body is returned, it may include one of these `error.code` values (derived from the OpenAPI schemas for this operation; additional codes may exist at runtime):

- `bad_request`

## Error handling & retries

Interpret HTTP status codes using the descriptions below. Do not assume a JSON body unless the OpenAPI schema defines one for that status.

- **400**: Invalid request **Retry:** Fix the request; retrying the same invalid payload will not help.
- **401**: Missing or invalid API key **Retry:** Fix the API key first; retrying without changes will not help.
- **402**: Insufficient credits **Retry:** Do not retry without resolving billing/credits (retrying the same request will not help).
- **500**: Unexpected or billing error
- **502**: Lookup could not be completed from the response (unexpected or invalid data). **Retry:** May be transient; a few retries with backoff are reasonable.
- **503**: Service temporarily unavailable; safe to retry with backoff. **Retry:** Usually safe to retry with exponential backoff and jitter.

### Suggested client defaults

- Send the API key using the `x-api-key` header on every request.
- On `503` (and sometimes `502`), retry with backoff; cap retries and surface a clear error to the user.
- On `402`, surface an actionable billing message rather than blind retries.

## Examples

### TypeScript SDK

```typescript
import { SocialFetchClient } from "@socialfetch/sdk";

const client = new SocialFetchClient({
  apiKey: process.env.SOCIALFETCH_API_KEY!,
});

const result = await client.facebook.getPostComments({
  url: "https://www.facebook.com/profile.php?id=61575098504636",
});

if (!result.ok) {
  console.error(result.error);
} else {
  console.log(result.value.data);
}
```

### Node.js

```javascript
const response = await fetch(
  "https://api.socialfetch.dev/v1/facebook/posts/comments",
  {
    headers: {
      "x-api-key": "YOUR_API_KEY",
    }
  }
);

const data = await response.json();
console.log(data);
```

### cURL

```bash
curl "https://api.socialfetch.dev/v1/facebook/posts/comments" \
  -H "x-api-key: YOUR_API_KEY"
```

### Python

```python
import requests

response = requests.get(
    "https://api.socialfetch.dev/v1/facebook/posts/comments",
    headers={"x-api-key": "YOUR_API_KEY"},
)
data = response.json()
print(data)
```

### Example: next page (pagination)

After a successful response, if pagination is not finished, request the next page using `cursor` (URL-encode when composing the query string):

```javascript
const previous = await response.json();
const nextCursor = previous?.data?.page?.nextCursor;
const hasMore = previous?.data?.page?.hasMore;
if (!hasMore || nextCursor == null) {
  // no more pages
} else {
  const nextUrl = new URL("https://api.socialfetch.dev/v1/facebook/posts/comments");
  nextUrl.searchParams.set("cursor", nextCursor);
  // optionally preserve sort: nextUrl.searchParams.set("sortBy", "latest");
  const nextResponse = await fetch(nextUrl.toString(), {
    headers: { "x-api-key": "YOUR_API_KEY" },
  });
  const nextData = await nextResponse.json();
}
```