Proposal: Canton Transaction Debugger

OPENPull Request
by infrasingularity04-05-2026Incoming
1.4M CC requested
daml-tooling
View on GitHub ↗← All Proposals

Development Fund Proposal Submission

Proposal file: /proposals/canton-transaction-debugger.md

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Summary

A Canton-native Transaction Debugger that turns failed Ledger API submissions into human-readable diagnoses and shareable, privacy-aware debug bundles. It extends the existing Canton developer toolchain (Ledger API rejection payloads, correlation IDs, structured logs) rather than replacing any component, and reduces time-to-root-cause for privacy- and authorization-heavy failures from hours to minutes.

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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

Label: daml-tooling

This proposal is a single-objective debugger build. Scoped localnet replay is included as a small, bounded follow-on (Milestone 6) and does not gate MVP value or compete with the debugger objective. Funding is broken out per milestone with deliverables and acceptance criteria tied to ecosystem value (adoption, time-to-diagnosis, support load), not artifact delivery.

The team (InfraSingularity) ships Daml-based projects and operates production Canton validator infrastructure. Relevant SIGs: Daml Language & Developer Tooling, Canton APIs, dApp Integration.

Champion: TBD

Total funding request: 1,430,000 CC across 6 milestones (14 weeks).