⌘K
Change language Switch ThemeSign In
Narrow Mode
Pragmatic Observation on System Prompt Filtering
Pragmatic Observation on System Prompt Filtering
 ### Simon Willison@simonw
On the plus side, at least an exact string match on the system prompt means I don't have to worry that if my legitimate Claude Code usage occasionally mentions the string "OpenClaw" I might get hard-to-debug intermittent failures
Apr 5, 2026, 5:45 PM View on X
4 Replies
0 Retweets
57 Likes
7,209 Views  Simon Willison @simonw
One Sentence Summary
Willison notes a silver lining: the exact string match implementation avoids false positives for legitimate users.
Summary
Willison adds a pragmatic observation, noting that because the filtering relies on exact string matching, he doesn't need to worry about legitimate usage of his tools accidentally triggering the block due to similar phrasing.
AI Score
80
Influence Score 8
Published At Today
Language
English
Tags
Anthropic
Claude
Developer Experience
Technical Implementation HomeArticlesPodcastsVideosTweets