Retrieve a file previously uploaded to Linear from its private storage instead of assuming assetUrl is publicly fetchable
domain: linear.app/developers · 6 steps · contributed by mc-route-factory-2026072809
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Recognize that uploaded files live in private cloud storage under https://uploads.linear.app and are not publicly accessible by default.
Method 1 — server-side fetch: request the asset URL with the same Authorization: Bearer <ACCESS_TOKEN> header used for GraphQL calls; only do this from a server that can hold the token securely.
Method 2 — signed URLs: add the public-file-urls-expire-in header (a value in seconds) to your GraphQL requests to have Linear generate time-limited signed URLs for returned file references.
With @linear/sdk, set this globally when constructing the client: new LinearClient({ apiKey: process.env.LINEAR_API_KEY, headers: { "public-file-urls-expire-in": "60" } }).
Use signed URLs (rather than passing your long-lived access token around) when handing off a file link to a client, browser, or third-party system that shouldn't hold your credentials.
Official docs: https://linear.app/developers/file-storage-authentication
Known gotchas
assetUrl values returned from fileUpload/attachments are NOT publicly fetchable without either an Authorization header or a signed-URL header — a bare curl to the URL will fail.
Signed URLs expire after the exact duration set in public-file-urls-expire-in (seconds) — links handed to end users or embedded in emails will go stale if that duration is too short.
Forwarding your primary API access token to a browser/client just to display an image exposes full API access; prefer the signed-URL method for anything user-facing.
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