diff --git a/harnesses/contexts/minimax/v1/harness.yaml b/harnesses/contexts/minimax/v1/harness.yaml
index 1d50c07..c7d99e2 100644
--- a/harnesses/contexts/minimax/v1/harness.yaml
+++ b/harnesses/contexts/minimax/v1/harness.yaml
@@ -7,6 +7,7 @@ provides: [claude-code]
 
 env:
   ANTHROPIC_BASE_URL: "https://api.minimax.io/anthropic"
+  ANTHROPIC_AUTH_TOKEN_FILE: "/run/agent/secrets/minimax/api_key"
   CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS: "1"
   CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC: "1"
   DISABLE_PROMPT_CACHING: "1"