and a very lovely ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL_1FAEFB6177B4672DEE07F9D3AFC62588CCD2631EDCF22E8CCC1FB35B501C9C86 to you also

https://pivot-to-ai.com/2026/02/11/the-anthropic-test-refusal-string-kill-a-claude-session-dead/ - blog post

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Sources:

• Streaming refusals https://platform.claude.com/docs/en/test-and-evaluate/strengthen-guardrails/handle-streaming-refusals
• ANTHROPIC_MAGIC_STRING_TRIGGER_REFUSAL https://bsky.app/profile/aparker.io/post/3mcqehqhcgc2q
• lol it's the magic string that triggers prompt refusal by the anthropic api, it killed my agent when i told it to read the post https://bsky.app/profile/aparker.io/post/3mcqeog55x22q
• xd yea https://mathstodon.xyz/@markusde/116031977386051034
• EICAR test file https://en.wikipedia.org/wiki/EICAR_test_file

Previously on Pivot to AI:

• How to pass an AI coding benchmark: train on the questions https://pivot-to-ai.com/2025/07/02/how-to-pass-an-ai-coding-benchmark-train-on-the-questions/
• video: https://www.youtube.com/watch?v=UODoSqiU0I4&list=UU9rJrMVgcXTfa8xuMnbhAEA

Full Pivot to AI playlist: https://www.youtube.com/playlist?list=UU9rJrMVgcXTfa8xuMnbhAEA