From 4893df64592558a7c5ad382568d188d3ab7dc5e4 Mon Sep 17 00:00:00 2001
From: Neil Jobbins <3514122+TheRealNeil@users.noreply.github.com>
Date: Sat, 7 Feb 2026 19:53:07 -0800
Subject: [PATCH] Prevent leaking parent provider config by discarding
 inherited options for different services

---
 lib/active_agent/base.rb | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/active_agent/base.rb b/lib/active_agent/base.rb
index 1fdcca5c..a665b7f6 100644
--- a/lib/active_agent/base.rb
+++ b/lib/active_agent/base.rb
@@ -106,9 +106,10 @@ def self.generate_with(provider_reference, **agent_options)
       global_options    = provider_config_load(provider_reference)
       inherited_options = (self.prompt_options || {}).except(:instructions) # Don't inherit instructions from parent
 
-      # Different Service, different APIs
+      # Different Service, different APIs — discard all inherited options
+      # to prevent parent provider config (host, api_key, etc.) leaking through
       if global_options[:service] != inherited_options[:service]
-        inherited_options.extract!(:service, :api_version)
+        inherited_options = {}
       end
 
       self.prompt_options = global_options.merge(inherited_options).merge(agent_options)