AsOf

Anthropic · featureURL source blocks

valid: Two independent sources agree, or a primary source states it: the record asserts this claim, unless it is a post, is marked for review or carries a confidence below 0.5.asserted

What the statuses mean

Valid from
2025-02-27
Valid until
still holds
Published
2025-02-27
Recorded by AsOf
2026-11-14
Checked
2026-11-14 · its source page states the value and the date, as read by an AI model
Confidence
0.70

Sources

“February 27, 2025 We’ve added URL source blocks for images and PDFs in the Messages API.”— what the page says, read 2026-11-14

Cite this claim

Each form names the value, its as-of date (2025-02-27), the day you read it (2026-11-14), the claim's stable URL and id and its primary source. The URL never changes: a superseded claim stays at the same address.

Plain text
AsOf. "Anthropic feature added: URL source blocks", as of 2025-02-27. Claim clm_7FFD517D7742, https://asof.is/claim/clm_7FFD517D7742, accessed 2026-11-14. Source: https://platform.claude.com/docs/en/release-notes/overview#2025-02-27.
APA
AsOf. (2025). Anthropic feature added: URL source blocks (as of 2025-02-27) [Record clm_7FFD517D7742]. Retrieved November 14, 2026, from https://asof.is/claim/clm_7FFD517D7742 (source: https://platform.claude.com/docs/en/release-notes/overview#2025-02-27)
BibTeX
@misc{asof_clm_7FFD517D7742,
  author = {AsOf},
  title = {Anthropic feature added: URL source blocks},
  year = {2025},
  howpublished = {\url{https://asof.is/claim/clm_7FFD517D7742}},
  note = {Claim clm\_7FFD517D7742, as of 2025-02-27; source: https://platform.claude.com/docs/en/release-notes/overview\#2025-02-27},
  urldate = {2026-11-14}
}

On the record

/claim/clm_7FFD517D7742.md/v1/claims/clm_7FFD517D7742submit a correction