Proposal: cast universal bridge

Development Fund Proposal Submission

Proposal file: /proposals/cast-universal-bridge.md

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Summary

This proposal introduces Cast, a tool that generates contract-specific OpenAPI v3.1 schemas directly from Daml .dar files. It bridges the gap between Daml’s strict type system and the standard Web2 ecosystem, enabling instant SDK generation and interactive documentation via Scalar UI.

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Checklist

• [x] Proposal file added under /proposals/
• [x] Milestones and funding amounts defined
• [x] Acceptance criteria included
• [x] Alignment with Canton priorities described

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Notes for Reviewers

Submitted as an independent contribution by Ali Tap. This tool specifically addresses the "generic payload" limitation of the current JSON API by providing deep AST analysis of Daml packages for better developer experience.