Loom Transcript Fetcher
Fetch the transcript from a Loom video using Loom's GraphQL API.
Instructions
Given the Loom URL: $ARGUMENTS
1. Extract the Video ID
Parse the Loom URL to extract the 32-character hex video ID. Supported URL formats:
https://www.loom.com/share/
https://www.loom.com/embed/
https://www.loom.com/share/?sid=
The video ID is the 32-character hex string after
/share/
or
/embed/
.
2. Fetch Video Metadata
Use the
WebFetch
tool to POST to
https://www.loom.com/graphql
to get the video title and details.
Use this curl command via Bash:
curl
-s
'https://www.loom.com/graphql'
\
-H
'Content-Type: application/json'
\
-H
'Accept: application/json'
\
-H
'x-loom-request-source: loom_web_45a5bd4'
\
-H
'apollographql-client-name: web'
\
-H
'apollographql-client-version: 45a5bd4'
\
-d
'{
"operationName": "GetVideoSSR",
"variables": {"id": "", "password": null},
"query": "query GetVideoSSR($id: ID!, $password: String) { getVideo(id: $id, password: $password) { ... on RegularUserVideo { id name description createdAt owner { display_name } } } }"
}'
3. Fetch the Transcript URLs
Use curl via Bash to call the GraphQL API:
curl
-s
'https://www.loom.com/graphql'
\
-H
'Content-Type: application/json'
\
-H
'Accept: application/json'
\
-H
'x-loom-request-source: loom_web_45a5bd4'
\
-H
'apollographql-client-name: web'
\
-H
'apollographql-client-version: 45a5bd4'
\
-d
'{
"operationName": "FetchVideoTranscript",
"variables": {"videoId": "", "password": null},
"query": "query FetchVideoTranscript($videoId: ID!, $password: String) { fetchVideoTranscript(videoId: $videoId, password: $password) { ... on VideoTranscriptDetails { id video_id source_url captions_source_url } ... on GenericError { message } } }"
}'
Replace
with the actual video ID extracted in step 1.
The response contains:
source_url
— JSON transcript URL
captions_source_url
— VTT (WebVTT) captions URL
4. Download and Parse the Transcript
Fetch
both
URLs returned from step 3 (if available):
VTT captions
(
captions_source_url
): Download with
curl -sL ""
. This is a WebVTT file with timestamps and text.
JSON transcript
(
source_url
): Download with
curl -sL ""
. This is a JSON file with transcript segments.
Prefer the VTT captions as the primary source since they include proper timestamps. Fall back to the JSON transcript if VTT is unavailable.
5. Present the Transcript
Format and present the full transcript to the user:
Video:
[Title from metadata]
Author:
[Owner name]
Date:
[Created date]
0:00
- First transcript segment text...
0:14
- Second transcript segment text...
(continue for all segments)
Error Handling
If the GraphQL response contains a
GenericError
, report the error message to the user.
If both
source_url
and
captions_source_url
are null/missing, tell the user that no transcript is available for this video.
If the video URL is invalid or the ID cannot be extracted, ask the user for a valid Loom URL.
Notes
No authentication or cookies are required — Loom's transcript API is publicly accessible.
Only English transcripts are available through this API.
Transcripts are auto-generated and may contain minor errors.