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Unable to Upload & Index the PDF

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Active
Tech stack
javascript, vscode
Domain
api, backend

Research direction

Start by reproducing the upload and indexing flow in Visual Studio Code 1.138.0 on Windows, then inspect the foundry-api.listVectorStores call and its 403 response using the provided stack trace. The issue is ready when the cause of the pagination failure is identified and the PDF upload/index flow no longer fails, with a regression test or clear reproduction details added.

Written by the indexing model from the issue text.

Description

needs attention

Does this occur consistently?
Repro steps:

Action: foundry-api.listVectorStores
Error type: UserError
Error Message: Pagination failed with unexpected statusCode 403

Version: 1.6.14
OS: win32
OS Arch: x64
OS Release: 10.0.19045
Product: Visual Studio Code
Product Version: 1.138.0
Language: en
UTC time: Tue, 29 Sep 2026 15:35:28 GMT

Call Stack 
v extension.js:5877:39507
b extension.js:5691:12873
l extension.js:5692:139
Object.getPage extension.js:5691:100613
async f extension.js:5691:101062
async g extension.js:2148:179892
async C extension.js:2148:181436
async G.listPagedVectorStores extension.js:2148:43414
async r extension.js:2148:179713
async G.listVectorStores extension.js:2148:42945
async h.listVectorStores extension.js:2170:190
async u.listVectorStores extension.js:2387:18439
extension.js:2158:22927extension.js:2158:22927
extension.js:2148:189604extension.js:2148:189604
async o extension.js:1908:19248
async u extension.js:2148:189425
async r.fetch extension.js:4941:4161
async r._refresh extension.js:5569:16226
Dominant language
JavaScript
Stars
2.1k
Forks
260
Avg merge
10h 48m
Merged PRs (30d)
34

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