{"version":"2.1.319","anchor":"prompt-string-removal-via-modelmix-config","canonical_anchor":"prompt-string-removal-via-modelmix-config","heading":"Remote config can remove more text from Claude's instructions","tier":"internal","area":"System Prompt","scope":"individual","heads_up":false,"url":"https:\/\/changelogs.core-directive.com\/v\/2.1.319\/e\/prompt-string-removal-via-modelmix-config","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.319","markdown":"### Remote config can remove more text from Claude's instructions\n\nClaude Code now also removes every string listed in its model-mix configuration from the system prompt\n\n**What**\n\nClaude Code already had a way to remove certain strings from the system prompt. The system prompt is the set of instructions Claude gets before your conversation. It now also removes every string listed in `removePromptStrings` in its model-mix configuration. Before, it removed only the strings it already had.\n\n**Why**\n\nConfiguration sent from Anthropic's side can now strip text from Claude's instructions, for example for experiments.\n\n- Area: System Prompt\n- Tier: Under the hood\n- Useful: 2\/5\n- Signal: 4\/5\n- Scope: individual\n- Heads-up: no"}