---
title: "LinkedIn Post Transcript API"
method: GET
path: "/v1/linkedin/post-transcript"
tags: ["LinkedIn"]
---

# LinkedIn Post Transcript API

`GET /v1/linkedin/post-transcript`

## Request

- Base URL: `https://api.captapi.com`
- URL: `https://api.captapi.com/v1/linkedin/post-transcript`
- Auth: one of:
  - HTTP bearer
  - API key in header `X-API-Key`

LinkedIn post text as a transcript — paragraph segments, timingSource none.

Paste a LinkedIn post/activity URL and get the public post body as structured text: transcript, wordCount, author, publishedAt, and transcriptSegments split on blank-line paragraphs (including NBSP gaps). timingSource is always "none" today (on every path) — no caption track or speech-to-text. When timingSource is "none", segment start/duration/timestamp are omitted (returned only when timingSource is "captions"). Each segment has index, wordCount, charStart/charEnd into transcript. estimatedReadSeconds is a single top-level 200 wpm estimate — never inside duration. There is no segments count key and no language key — LinkedIn does not expose a speech language, and we do not guess from the body. timings{nativeMs,totalMs} time the fetch. Read from LinkedIn's logged-out post page only: a deleted post is 404; LinkedIn's sign-in page or a failed fetch is 502 UPSTREAM_UNAVAILABLE, retryable, 0 credits. Flat 1 credit.

Docs: https://captapi.com/apis/linkedin-post-transcript

## Query parameters

- `url` string, required
- `cache` boolean

## Response `200`

Success. The data object for this endpoint.

- object
  - `success` unknown, required
  - `data` object, required
    - `platform` string: Platform identifier for this response (matches the endpoint's platform).
    - `url` string: Canonical URL of the item.
    - `transcript` string: Full LinkedIn post body text (not speech-to-text from a video).
    - `transcriptSegments` object[]
      - `text` string: Text content.
      - `index` integer: 0-based segment order within transcriptSegments.
      - `wordCount` integer: Word count of the full transcript (emoji-only tokens count as 0; URLs count as 1).
      - `charStart` integer: Start offset into transcript (transcript.slice(charStart, charEnd) === text).
      - `charEnd` integer: End offset into transcript (exclusive).
    - `wordCount` integer: Word count of the full transcript (emoji-only tokens count as 0; URLs count as 1).
    - `segments` integer: Timed caption/ASR: array of {text,startMs,endMs}. File-upload video-transcript: segment count. Sponsor endpoints: sponsor segment list.
    - `author` object
      - `name` string: Name of this author item.
      - `url` string: Canonical URL of the item.
    - `publishedAt` string: ISO-8601 when guest HTML/JSON-LD exposes it (including VideoObject datePublished on ugcPost URLs).
    - `timingSource` string: Always "none" on this endpoint today (on every path). "captions" is reserved for future cue support — do not branch on it; nothing emits it yet.
    - `estimatedReadSeconds` integer: Whole-transcript reading-time estimate at 200 wpm. Not per-segment duration.
    - `language` unknown

## Other responses

- `400`: Bad request: wrong platform URL, unknown endpoint, or an invalid parameter value. Not billed.
- `401`: Missing, invalid or revoked API key. Not billed.
- `402`: Not enough credits for this request. Not billed.
- `404`: The resource does not exist or is not public. Not billed.
- `422`: A required parameter is missing or has the wrong type. Not billed.
- `429`: Rate limit reached. Wait for Retry-After seconds. Not billed.
- `502`: The platform could not be reached or returned nothing usable. Retryable, not billed. 503 and 504 use the same envelope.

---

[API](https://skmtc.dev/captapi/apis/captapi-api.md) · [All operations](https://skmtc.dev/captapi/apis/captapi-api/llms.txt) · [OpenAPI document](https://skmtc.dev/captapi/apis/captapi-api/revisions/c9b9ac5ff1bd?raw)