Anthropic Claude Writing Watermark Checker

Paste text or upload PDF and DOCX to see if writing looks like Claude. Claude uses SynthID-Text with a private key — this Actor returns isAiGenerated as a classifier until a public detector exists. JSON includes confidence, likely source, and limitations. For editors and reviewers. No Claude login.

Publisher description, verbatim

Last 7 dayson this actor

No changes seen in the last 7 days.

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Key figures28 readings

Price / 1k$5.00per 1,000 text-checked

Users / 30d1→ 0 over 28 readings

Users, all time8↑ 6 over 28 readings

Runs / 30d41↑ 40 over 27 readings

Runs / user / mo41.0runs per monthly user

Recorded changes

2026-09-06schemaInput schema changed—on record
2026-09-06contentREADME updated+189 characters+189characters
2026-08-29changeListed—on record

showing 3 of 3 in the last 30 days · followers get the next one by email

History

28 readings since 2026-08-29

Users / 30d28 readings

Users, all time28 readings

Runs / 30d27 readings

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Numbers on this page are measured only by an independent census of the Apify Store — not self-reported. Not indexed: too little has happened to this actor for us to have anything worth saying yet.