# clm_BC5A9F4B1B41

subject: Claude (/record/claude.md)  
predicate: feature_added  
value: Files API  
valid_from: 2025-05-22  
valid_to: null  
published: 2025-05-22  
recorded: 2026-11-14  
confidence: 0.70  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-14  
cite: AsOf. "Claude feature added: Files API", as of 2025-05-22. Claim clm_BC5A9F4B1B41, https://asof.is/claim/clm_BC5A9F4B1B41, accessed 2026-11-15. Source: https://platform.claude.com/docs/en/release-notes/overview#2026-08-19.  
checked: 2026-11-14 · its source page states the value and the date, as read by an AI model  

> We’ve launched the Files API in beta, enabling you to upload files and reference them in the Messages API and code execution tool.

What https://platform.claude.com/docs/en/release-notes/overview#2025-05-22 says, word for word.

## Sources

- https://platform.claude.com/docs/en/release-notes/overview#2026-08-19 (primary, Anthropic, published 2026-08-19)
- https://platform.claude.com/docs/en/release-notes/overview#2025-05-22 (primary, Anthropic, published 2025-05-22)

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