Current capability status
What can be checked today?
ClaudeWatermarks separates directly inspectable artifacts from Anthropic's model-level text marking. This status page makes that boundary explicit so a local result is never presented as authorship proof.
Evidence boundary: Anthropic says third-party detection details are forthcoming. ClaudeWatermarks does not present ordinary Unicode or clipboard residue as Anthropic's model-level watermark.
Available now in this browser
- Locate supported hidden Unicode and control characters.
- Read rich clipboard HTML after an explicit permission action.
- Preview and remove only selected text artifacts.
- Validate readable C2PA Content Credentials in selected files.
Not available as a general third-party check
Anthropic describes an imperceptible model-level mark in supported Claude text, but says details about third-party detection are forthcoming. This site therefore does not label zero-width characters, clipboard formatting, writing style, or detector scores as that mark.
How to interpret a negative result
“No inspected text artifacts found” means only that this checker did not find the signals it explicitly supports. It does not prove that text was written by a human, lacks a model-level mark, or never passed through Claude.