403 Forbidden Error on X (Twitter) Media Upload

Questions
1

Hi everyone,

I am trying to upload an image to X (Twitter) using the HTTP Request Node but I keep receiving a 403 Forbidden error.

My Setup:

  • n8n Version: 2.1.5 (Self-hosted)

  • Endpoint: https://api.x.com/2/media/upload

  • Auth Method: X OAuth2 API (Built-in n8n credential)

  • Permissions: App is set to “Read and Write and Direct Messages” in X Developer Portal.

The Request:

  • Method: POST

  • Body Type: Form-Data

  • Parameters: * media: (Binary file from previous node)

    • media_category: tweet_image

    • media_type: image/png

Even though my credentials seem correct and have full write permissions, I cannot bypass this error. Is there a specific header or parameter I’m missing for the v2 media upload endpoint in n8n?

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