docs(model_armor): document skip_unscannable_attachments and max_file_attachments

[devin-ai-integration]

Summary

Companion docs for BerriAI/litellm#33554, which fixes the v1.92.0 Model Armor regression where attachment shapes that worked on v1.91.x started returning HTTP 400.

Updates docs/proxy/guardrails/model_armor.md:

• Documents skip_unscannable_attachments (default false): lets reference-only attachments (file_id, gs://, http(s)://) and undecodable inline base64 pass through unscanned, while fail_on_error still governs real Model Armor API errors.
• Documents max_file_attachments (default 10): the per-request attachment cap is now configurable. Over the cap blocks under fail_on_error: true; under fail_on_error: false every attachment is scanned rather than silently dropping the overflow (the old truncate-to-10 behavior).
• Corrects the "Attachments That Cannot Be Scanned" table row for over-cap requests (was "first 10 scanned, rest pass through unscanned") and clarifies that oversize documents (>4 MB) stay fail-closed by default and are not covered by skip_unscannable_attachments.

Verified with npm run build (no new warnings from this page).

Link to Devin session: https://app.devin.ai/sessions/2a1e5e4797394ff79c4d8d6a9513d2f0
Requested by: @yucheng-berri

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
litellm	Ready	Preview, Comment	Jul 16, 2026 7:24pm