Code and errors

Diagnose errors, find code samples, surface breaking changes and known issues across the Canton stack.

4 tools in this group.

diagnose_error

Paste a Canton/Daml/Splice error message or stack trace fragment and get the most likely resolved fixes from CCPEDIA's historical corpus: forum threads where the same error was discussed, related GitHub issues, and the SDK version range the error appeared in. Canton-specific - do NOT use for non-Canton errors. Best when the input contains a distinctive error code (e.g. TOPOLOGY_TOO_MANY_PENDING_TOPOLOGY_TRANSACTIONS, UNAVAILABLE, ValidatorLicense) or a verbatim exception class. Returns top 3 matches each from forum_posts and github_items.

curl -X POST https://ccpedia.xyz/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"diagnose_error","arguments":{}}}'

get_breaking_changes

Compare two Canton/Daml/Splice SDK versions and return the list of changes between them. release notes from github_releases plus any forum/GitHub reports near the release window. Canton-specific. Use when a developer is planning an upgrade and asks "what breaks moving from X to Y?". Pass version strings as they appear in github_releases tags (with or without the leading "v").

curl -X POST https://ccpedia.xyz/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_breaking_changes","arguments":{}}}'

get_issue_status

Look up one GitHub issue or PR by repo + number. Canton/Daml/Splice repos only.

curl -X POST https://ccpedia.xyz/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_issue_status","arguments":{}}}'

get_recurring_issue_fingerprint

Identify error patterns that recur across multiple Canton SDK or Splice release windows. structural bugs the ecosystem keeps hitting versus one-off regressions. Returns the top keywords/error codes mentioned in forum_posts that span at least 3 distinct months over the last 18 months. Canton/Daml/Splice ecosystem only. Useful for triage prioritisation and for choosing what to add to a runbook.

curl -X POST https://ccpedia.xyz/mcp \
  -H 'content-type: application/json' \
  -H 'accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"get_recurring_issue_fingerprint","arguments":{}}}'