# clm_C5DA42071EB6

subject: Claude (/record/claude.md)  
predicate: feature_removed  
value: files-api-2025-04-14 beta header  
valid_from: 2026-08-27  
valid_to: null  
published: 2026-08-27  
recorded: 2026-10-31  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-10-31  
checked: 2026-10-31 · its source page states the value and the date  

> Requests to the /v1/files endpoints, and Messages API requests that reference an uploaded file, no longer require the files-api-2025-04-14 beta header.

What https://platform.claude.com/docs/en/release-notes/overview#2026-08-27 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-08-27 (primary, Anthropic, published 2026-08-27)

---

AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.