v1.42.0 Release

Release Notes

• #4697 feat(improvement): Add-scores-and-experiments-empty-states-to-dev-server

  The dev server now includes Scores and Experiments pages (AI section, beta) showing how to get started with step.score() and group.experiment(). Data for these features is displayed in Inngest Cloud after deploying; the dev server pages let you register interest in local support.

• #4718 fix(traces): scope span self-join by run_id

  Fixed the runs list hanging on large Postgres deployments when deferredFrom/isDeferred was selected. No migration or manual index needed.

• #4720 feat: Surface event scheduling in the dashboard

  • Surface scheduled at in the dashboard's run's page iff the event is scheduled in the future

• #4721 refactor(runs): remove legacy tokens from run output header

  Removed Model/token values parsed from step.run output in favor of a nudge towards the better AI metadata setup.

• #4724 feat(api): add v2 send event endpoint

  Added a send event endpoint to the v2 rest api, cli and mcp.

  POST /v2/events

  inngest api --prod send-event \
    --name "app/user.created" \
    --data '{"userId":"user_123","email":"ada@example.com"}' \
    --id "user-created-user_123"
  

• #4737 fix(traces): hide expand/collapse all when there is nothing to toggle

  Expand and contract buttons in the trace viewer are hidden when they will not change what's displayed

• #4744 feat(ui): adding a concurrency color in the graph

  Changing the Overview and the Functions page to show concurrency limits being reached in UI.

• #4749 fix(batch): propagate timeout scheduling errors so source events retry

  Fixed an issue where transient scheduling failures could prevent a new batch's timeout job from being enqueued, causing the batch to remain pending past its configured timeout until it reached its batch limit.

Migration Notes

• #4697 feat(improvement): Add-scores-and-experiments-empty-states-to-dev-server

  🤖 Generated with Claude Code

  https://claude.ai/code/session_01QgjtSu6eF6j3bc8GWC6buN

• #4722 chore(queue): remove system queue migrations

  None

  Validation

  • go test -count=1 ./pkg/execution/queue ./pkg/execution/state/redis_state ./pkg/execution/executor ./pkg/execution/deletion ./tests/execution/queue
  • git diff --check

• #4723 feat(queue): let custom scanners declare roles

  None

  Validation

  • go test -count=1 ./pkg/execution/queue

• #4726 fix(queue): preserve sentinel shard selection errors

  None

  Checks

  • go test -count=1 ./pkg/execution/queue
  • git diff --check

• #4753 fix(ui): adding legend for concurrency limit on hover

  

Changelog

🚀 Features

• Add SDK feature observations (#4700)
• (connect) Adding support for connect HA (#4714)
• (queue) Let custom scanners declare roles (#4723)
• (api) Add v2 sandbox contracts (#4716)
• Surface event scheduling in the dashboard (#4720)
• (ai metadata) More robust AI model cost data (#4728)
• (improvement) Add-scores-and-experiments-empty-states-to-dev-server (#4697)
• (improvement) Cloud MCP UI (#4729)
• (ui-mcp) Re-add MCP setup page (#4740)
• (mcp) Restore setup docs with public operations (#4748)
• (ui) Adding a concurrency color in the graph (#4744)
• (api) Add v2 send event endpoint (#4724)

🐛 Bug Fixes

• (traces) Scope span self-join by run_id (#4718)
• 64 bit linux download link for install.sh script (#4727)
• (queue) Preserve sentinel shard selection errors (#4726)
• Revert "feat(improvement): Cloud MCP UI (#4729)" (#4739)
• (ui-mcp) Revert MCP setup page redesign (#4745)
• (redis-state) Tolerate legacy idempotency tombstones (#4747)
• (batch) Propagate timeout scheduling errors so source events retry (#4749)
• (traces) Hide expand/collapse all when there is nothing to toggle (#4737)
• (ui) Adding legend for concurrency limit on hover (#4753)
• (queue) Disable constraint checks when key queues are disabled (#4754)

🚜 Refactor

• (runs) Remove legacy tokens from run output header (#4721)
• (queue) Split queue reader capabilities (#4743)
• (connect) Remove the async ACK gateway -> executor (#4215)

📚 Documentation

• (api) Improve v2 app sync and insights docs (#4732)

⚙️ Miscellaneous Tasks

• (queue) Remove system queue migrations (#4722)
• (batch) Add more context to schedule batch execution (#4742)
• (connect) Adding run id to logs (#4698)