docs: add Modal Backend page to Agent Canvas backends#569
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Add documentation for deploying the OpenHands agent server on Modal as a remote backend for Agent Canvas. Includes: - Full deploy.py script and step-by-step setup instructions - Modal secret creation, CLI install, and Canvas connection - Cost breakdown, limitations, and security guidance - API key rotation and teardown procedures Also adds the Modal entry to the Backends navigation group in docs.json and the recommended setups table in backends.mdx. Co-authored-by: openhands <openhands@all-hands.dev>
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Code Review: Modal Backend Documentation
🟢 Good taste — Well-structured, comprehensive documentation.
Summary
This PR adds a new backend option (Modal) to the Agent Canvas documentation. The changes include:
- New with 278 lines of detailed setup instructions
- Navigation integration via
- Backend comparison table entry in
Analysis
The new documentation is thorough and follows the existing patterns in the repo:
✅ Strengths
- Clear step-by-step instructions with numbered sections
- Appropriate security warnings (API key handling, filesystem access)
- Realistic cost breakdown table
- Honest "Limitations" section covering Docker-in-Docker, single-user, and public URL concerns
- Complete teardown instructions
- Related guides linking to other backend options
✅ Python deployment script quality
- Well-commented with inline documentation
- Uses correctly for background process
- Environment variable () for tools directory is reasonable
- Configuration constants at the top for easy customization
✅ Navigation integration
- Added to navigation structure correctly
- Added to backends comparison table with appropriate context
Minor Observations
These are non-blocking suggestions:
🟡 Headless setup: The command opens a browser. For users on headless servers, is an alternative. Worth a note for completeness.
🟡 Version pinned: The image tag is hardcoded. A note like "use the latest released version from releases" would help users find the current version.
Risk Assessment
- Overall PR:
⚠️ Risk Assessment: 🟢 LOW - This is documentation-only with no code that could introduce runtime bugs
- Security notes are appropriately prominent
- No breaking changes to existing content
Verdict
✅ Worth merging — Documentation is complete, accurate, and follows established patterns.
This review was generated by an AI agent (OpenHands) on behalf of the user through OpenHands Automation. View conversation
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2 participants
Summary
Add documentation for deploying the OpenHands agent server on Modal as a remote backend for Agent Canvas.
Changes
New page
openhands/usage/agent-canvas/backend-setup/modal.mdx— Full setup guide covering:deploy.pyscript with inline commentsUpdated pages
docs.json— Addedmodalto the Backends navigation groupopenhands/usage/agent-canvas/backends.mdx— Added a Modal row to the Recommended Setups tableNotes
docker.mdx,vm.mdx,cloud.mdx)<Warning>) and absolute internal links per the doc style guideThis PR was created by an AI agent (OpenHands) on behalf of the user.