CLAUDE.md Every-Request Injection

• Entity ID: ent-20260423-r31a000000060
• Type: mechanism
• Scope: private
• Status: active

Description

Per Kangraemin MITM analysis: CLAUDE.md content is sent on every single API request, not just the first — prepended as a block on every turn's user message. Not placed in the API system field. This means CLAUDE.md edits take effect from the next turn onward without a session restart, but also that each turn re-pays the associated cached tokens.

Key claims

• CLAUDE.md is re-injected on every request, not just the first

Relations

• CLAUDE.md Every-Request Injection --[implements]--> CLAUDE.md as User Context Not System Prompt

Sources

src-20260423-542f02260352