Upload and inject a Chrome extension into a Browserbase session (extensions API)
domain: docs.browserbase.com · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Upload your extension: POST /v1/extensions as multipart/form-data with a 'file' field (the extension archive) and the X-BB-API-Key header - returns the extension id.
Manage it: GET /v1/extensions, GET /v1/extensions/{id}, DELETE /v1/extensions/{id}.
When creating a session, pass extensionId (top-level) or browserSettings.extensionId to inject it.
The extension is then active in that session's browser.
Docs: https://docs.browserbase.com/reference/api/openapi.v1.yaml (extensions); Browser Sessions core features list 'Chrome extensions'.
Known gotchas
The upload requires the extension archive as the multipart 'file' field - that field is required.
Extensions apply at session creation time; create the session with extensionId set, not after.
Extension injection applies to Chromium-based sessions.
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