v0.8.47

simstudioai/simv0.8.47Sep 19, 2026by github-actions[bot]

Upgrading?

AI Summary

This release introduces enhanced AI Agent Builders with full MCP support and a dedicated Sim MCP server. It also includes model fallbacks, knowledge base improvements, and various bug fixes for connectors and file search.

Key Highlights

  • Best AI Agent Builders with MCP Support (#7999)
  • Sim MCP server for the full Sim API (#7985)
  • Model fallbacks to Agent, Evaluator, and Router (#7972)
  • Knowledge ranking and caching improvements (#7996, #7989)
  • Bug fixes for file search and document recovery (#7995, #7993)

Breaking Changes

  • Access requests feature moved from rollout flag to EE

New Features

  • Best AI Agent Builders with MCP Support
  • Model fallbacks for Agent, Evaluator, and Router
  • Sim MCP server for the full Sim API
  • Access requests feature moved to EE
  • Centralized UI styling and refactoring
  • Improved accessibility for icon-only buttons

Full Release Notes

## Features

- feat(library): Best AI Agent Builders with MCP Support (#7999)
- feat(workflows): add model fallbacks to Agent, Evaluator, and Router (#7972)
- feat(mcp): Sim MCP server for the full Sim API (#7985)
- feat(access-requests): remove rollout flag and move feature into ee (#7986)

## Improvements

- improvement(knowledge): rank inside the permitted set for organization search (#7996)
- improvement(knowledge): cache admitted usage checks on the search path (#7989)
- refactor(emcn): centralize product icon-button padding (#7987)
- refactor(emcn): centralize document file-type icons (#7984)
- refactor(emcn): centralize composer action button appearance (#7983)
- refactor(ui): centralize bulk-action buttons in EMCN (#7982)
- refactor(ui): remove styles already supplied by EMCN controls (#7979)
- refactor(emcn): share filled stop icon across chat controls (#7977)

## Bug Fixes

- fix(file-search): avoid foreground GIN cleanup stalls (#7995)
- fix(knowledge): preserve live document processing during recovery (#7993)
- fix(knowledge): preserve live document jobs during recovery (#7994)
- fix(connectors): explain disabled settings with tooltips (#7981)
- fix(settings): stabilize group search and modal dropdowns (#7980)
- fix(traces): make trace backfills bounded and resumable (#7974)
- fix(connectors): save service account changes with source settings (#7978)
- fix(a11y): name icon-only buttons across product UI (#7975)

## Contributors

- @BillLeoutsakosvl346
- @TheodoreSpeaks
- @icecrasher321
- @mzxchandra
- @waleedlatif1

[View changes on GitHub](https://github.com/simstudioai/sim/compare/v0.8.46...v0.8.47)

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