> **For coding agents and LLMs:** This is one page from the Social Fetch docs (markdown export). For curated orientation and workflow guidance, start with [`/llms.txt`](https://www.socialfetch.dev/llms.txt); for agent onboarding and crawl rules, use [`/agents.txt`](https://www.socialfetch.dev/agents.txt); for the full endpoint list with links to pages like this one, use [`/llms-endpoints.txt`](https://www.socialfetch.dev/llms-endpoints.txt); for one platform's parameters and curls, use [`/llms-{platform}.txt`](https://www.socialfetch.dev/llms-tiktok.txt); use [`/llms.json`](https://www.socialfetch.dev/llms.json) when you need structured JSON for tool registration.

## This page

- **On-site (HTML):** <https://www.socialfetch.dev/docs/api/v1/stack-overflow/posts/postid/revisions/get>
- **Markdown (.mdx) URL:** <https://www.socialfetch.dev/docs/api/v1/stack-overflow/posts/postid/revisions/get.mdx>

## API base URL and authentication

- **API origin (from OpenAPI `servers`):** `https://api.socialfetch.dev`
- **Authentication:** send `x-api-key: sfk_...` on `/v1/**` and `/v2/**` 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>

## 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()`.
- [Capability matrix](https://www.socialfetch.dev/docs/capability-matrix.mdx) — every operation with identifiers, pagination, outcomes, media download, credits, and its SDK method. Generated from OpenAPI, so use it for route selection instead of scanning individual pages.
- [Recipes](https://www.socialfetch.dev/docs/recipes.mdx) — copyable workflows (brand monitoring, transcripts, Ad Library, creator scoring, Reddit research) with credit callouts and SDK examples.
- [Integrations](https://www.socialfetch.dev/docs/integrations.mdx) — MCP for AI clients, n8n verified node, Apify Store Actors, Make custom app, SDK, and REST API connection paths.
- [MCP product page](https://www.socialfetch.dev/mcp) — hosted MCP overview, OAuth, Skills install.
- [MCP integration](https://www.socialfetch.dev/docs/integrations/mcp.mdx) — hosted `/mcp` server, OAuth, Cursor/VS Code/Claude install snippets, 910 endpoint tools, plus docs_search/docs_read for implementation help.
- [n8n integration](https://www.socialfetch.dev/docs/integrations/n8n.mdx) — install `n8n-nodes-socialfetch`, credentials, and workflow examples.
- [Apify integration](https://www.socialfetch.dev/docs/integrations/apify.mdx) — Store Actors under @social-fetch, PPE billing, dataset export, and quick start.
- [Make integration](https://www.socialfetch.dev/docs/integrations/make.mdx) — custom app modules for Make scenarios, API key credentials, and module catalog.
- [`/llms-endpoints.txt`](https://www.socialfetch.dev/llms-endpoints.txt) — every documented operation with a direct link to that route's agent-readable markdown page (prefer this over parsing OpenAPI).
- [`/llms-{platform}.txt`](https://www.socialfetch.dev/llms-tiktok.txt) — per-platform endpoint files generated from OpenAPI (parameters, credits, curls).
- [`/agents.txt`](https://www.socialfetch.dev/agents.txt) — agent crawl/onboarding file with capabilities, auth rules, and allowlist.
- [`/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`).
- Published blog posts use the same convention: `/blog/{slug}` → `/blog/{slug}.mdx`, or `Accept: text/markdown` on the HTML URL (`Vary: Accept`).

---
# List Stack Overflow post revisions (https://www.socialfetch.dev/docs/api/v1/stack-overflow/posts/postid/revisions/get)

## Summary

List the versions of a Stack Overflow post, with the text before and after each edit.

**Tags:** `Stack Overflow`

## HTTP

- **Method:** GET
- **Path:** `/v1/stack-overflow/posts/{postId}/revisions`
- **Base URL:** `https://api.socialfetch.dev`

## Capability summary

- **SDK mapping:** `client.stackOverflow.listPostRevisions({ postId: 11227902 })`
- **Accepted identifiers:** `postId` (path)
- **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.
- **Failed requests (`lookup_failed`, `503`):** not charged.
- **Authoritative field:** `meta.creditsCharged`.

## Authentication

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

## Parameters

### `postId` (path)

- **Required:** yes
- **Constraints:** type `integer`; minimum: 1; maximum: 2147483647
- **Description:** Post id (a question or an answer) on the chosen site, e.g. `11227902`.

### `site` (query)

- **Required:** no
- **Constraints:** type `string`
- **Description:** Stack Exchange site, by its API name (`askubuntu`, `serverfault`, `math`, `ru.stackoverflow`). Default: `stackoverflow`. The sites endpoint lists them all.

### `limit` (query)

- **Required:** no
- **Constraints:** type `integer`; minimum: 1; maximum: 100
- **Description:** Up to this many rows per page, 1 to 100. Default: 30. A page can hold fewer than `limit` rows where rows share a creation second or a block of 100 rows ends. Follow `page.nextCursor` until `hasMore` is false.

### `cursor` (query)

- **Required:** no
- **Constraints:** type `string`; minLength: 1; maxLength: 1024
- **Description:** Cursor from `page.nextCursor` of the previous response. It only works with the same filters.

## 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**: Revision listing.
- **400**: Invalid request
- **401**: Missing or invalid API key
- **402**: Insufficient credits
- **500**: Unexpected or billing error
- **502**: Lookup could not be completed.
- **503**: Service temporarily unavailable; safe to retry with backoff.

## Response body (200)

Revision listing.

### Field outline

- **data** (required) — type `object`. Endpoint-specific response payload.
  - **lookupStatus** (required) — type `string`; enum: found, not_found. `not_found` when the post does not exist or was deleted.
  - **site** (required) — type `string`. The Stack Exchange site the revisions belong to.
  - **postId** (required) — type `integer`. The post the revisions belong to.
  - **revisions** (required) — type `array`. The revisions on this page, newest first.
    - _items:_
      - **guid** (required) — type `string`; nullable. Identifier of the revision.
      - **number** (required) — type `integer`; nullable. Position in the post's history, 1 for the first version.
      - **type** (required) — type `string`; nullable. `single_user` (an edit by one user) or `vote_based` (a rollback, a close or a community change).
      - **postId** (required) — type `integer`; nullable. The post the revision belongs to.
      - **postType** (required) — type `string`; nullable. `question` or `answer`.
      - **createdAt** (required) — type `string`; nullable. When the revision was made, ISO 8601 UTC.
      - **author** (required) — type `object`; nullable. Who made it; null when the revision has no single author.
      - **comment** (required) — type `string`; nullable. The edit summary as plain text. A bounty or bot row carries markup, which is stripped.
      - **isRollback** (required) — type `boolean`; nullable. Whether the revision restored an older version.
      - **setCommunityWiki** (required) — type `boolean`; nullable. Whether the revision turned the post into a community wiki.
      - **title** (required) — type `string`; nullable. The title after the revision; null for answers.
      - **tags** (required) — type `array`. The tags after the revision; empty for answers.
        - _items:_
          - type `string`
      - **bodyHtml** (required) — type `string`; nullable. The text after the revision, as HTML.
      - **previousTitle** (required) — type `string`; nullable. The title before the revision.
      - **previousTags** (required) — type `array`. The tags before the revision.
        - _items:_
          - type `string`
      - **previousBodyHtml** (required) — type `string`; nullable. The text before the revision, as HTML.
  - **page** (required) — type `object`. Pagination state for the current page.
    - **hasMore** (required) — type `boolean`. Whether another page is available.
    - **nextCursor** (required) — type `string`; nullable. Cursor for the next page; null on the last page.
  - **limitReached** (required) — type `boolean`. True when the list stopped at the site's 25-page ceiling (2,500 rows, or 625 when the page carries text), or when a user's answer or comment list is too large for page-offset paging and has served its first 100 rows (25 when it carries text). Sort by `creation` to page deeper. False for every list that ends because it ran out.
- **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",
    "site": "stackoverflow",
    "postId": 11227902,
    "revisions": [
      {
        "guid": "C05EDB0D-195A-4C66-9BB2-B60372F07489",
        "number": 56,
        "type": "single_user",
        "postId": 11227902,
        "postType": "answer",
        "createdAt": "2024-03-04T17:37:13.000Z",
        "author": {
          "id": 224132,
          "accountId": 78868,
          "name": "Peter Cordes",
          "url": "https://stackoverflow.com/users/224132/peter-cordes",
          "imageUrl": "https://i.sstatic.net/N4ivW.png?s=256",
          "reputation": 384159,
          "type": "registered",
          "acceptRate": null
        },
        "comment": "Rollback to Revision 54",
        "isRollback": true,
        "setCommunityWiki": false,
        "title": null,
        "tags": [],
        "bodyHtml": "<p><strong>You are a victim of <a href=\"https://en.wikipedia.org/wiki/Branch_predictor\" rel=\"nofollow noreferrer\">branch prediction</a> fail.</strong></p>\n<hr />\n<h2>What is Branch Prediction?</h2>\n<p>Consider a railroad junction:</p>\n<p><a href=\"https://commons.wikimedia.org/wiki/File:Entroncamento_do_Transpraia.JPG\"…",
        "previousTitle": null,
        "previousTags": [],
        "previousBodyHtml": "<p><strong>You are a victim of <a href=\"https://en.wikipedia.org/wiki/Branch_predictor\" rel=\"nofollow noreferrer\">branch prediction</a> fail.</strong></p>\n<hr />\n<h2>What is Branch Prediction?</h2>\n<p>Consider a railroad junction:</p>\n<p><a href=\"https://commons.wikimedia.org/wiki/File:Entroncamento_do_Transpraia.JPG\"…"
      }
    ],
    "page": {
      "hasMore": true,
      "nextCursor": "eyJrIjowLCJwIjoxLCJ6IjoxMDAsIm8iOjEsInciOjEwMCwiZiI6ImJhMzk5ODQ1NmQxOTY3ZjgifQ"
    },
    "limitReached": false
  },
  "meta": {
    "requestId": "req_24b0d0cf-ee7a-4878-8c4e-1b9a0baf7fd9",
    "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. **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.stackOverflow.listPostRevisions({
  postId: 11227902,
});

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/stack-overflow/posts/11227902/revisions",
  {
    headers: {
      "x-api-key": "YOUR_API_KEY"
    }
  }
);

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

### cURL

```bash
curl "https://api.socialfetch.dev/v1/stack-overflow/posts/11227902/revisions" \
  -H "x-api-key: YOUR_API_KEY"
```

### Python

```python
import requests

response = requests.get(
    "https://api.socialfetch.dev/v1/stack-overflow/posts/11227902/revisions",
    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/stack-overflow/posts/abc123/revisions");
  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();
}
```