# Braintrust: Custom code preprocessors temporarily disabled on Braintrust Cloud

> Braintrust status incident “Custom code preprocessors temporarily disabled on Braintrust Cloud” on 2026-11-13: impact major (vendor’s label), 1 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8
Last updated: 2026-11-13T01:21:19Z

- Impact (vendor’s label): major
- Status: identified
- Started: 2026-11-13 01:21 UTC · Resolved: not resolved · Duration: ongoing
- Updates: 1 · Affected components: API, API
- [Vendor status page: https://status.braintrust.dev/incidents/01M797XB9ZRP4H9P2AVMWAMNC8](https://status.braintrust.dev/incidents/01M797XB9ZRP4H9P2AVMWAMNC8)
- [Company: Braintrust](https://rewindex.com/company/braintrust.md)

## Timeline of updates

- **identified** 2026-11-13 01:21 UTC: We have temporarily disabled custom code preprocessors across Braintrust Cloud while we work on fixing an ongoing issue with it. This may affect how conversations render in the Thread view, and the output of Topics facets and any scorers that rely on a custom preprocessor. Saved preprocessor code is unchanged and nothing has been deleted. Logging, querying, experiments, and all other functionality are unaffected, and no other regions are impacted. A fix is in progress and we expect to re-enable custom code preprocessors shortly.

## Rewindex changes for this incident

- 2026-11-13 01:21 UTC: [Major incident: Custom code preprocessors temporarily disabled on Braintrust Cloud](https://rewindex.com/change/iac127c500afa94.md)

## Cite this

Status incident (vendor impact label: major) posted by Braintrust, started 2026-11-13 01:21 UTC, not resolved, 1 update(s).

- Canonical URL: https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8
- Citation: Braintrust, “Custom code preprocessors temporarily disabled on Braintrust Cloud” (2026-11-13 01:21 UTC). Archived by Rewindex: https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8 (CC BY 4.0).
- Markdown link: `[Braintrust: Custom code preprocessors temporarily disabled on Braintrust Cloud (2026-11-13)](https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8)`


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Canonical: https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8 · Markdown: https://rewindex.com/company/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8.md · JSON: https://rewindex.com/api/v1/companies/braintrust/incidents/01M797XB9ZRP4H9P2AVMWAMNC8 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-13T03:26:35.814Z