diff --git a/config.agent.example.yaml b/config.agent.example.yaml
index b0c3b08f..32ca55d5 100644
--- a/config.agent.example.yaml
+++ b/config.agent.example.yaml
@@ -2,10 +2,10 @@
 # Location `<aichat-config-dir>/agents/<agent-name>/config.yaml`
 
 model: openai:gpt-4o             # Specify the LLM to use
-temperature: null                # Set default temperature parameter
-top_p: null                      # Set default top-p parameter, range (0, 1)
+temperature: null                # Set default temperature parameter, range (0, 1)
+top_p: null                      # Set default top-p parameter, with a range of (0, 1) or (0, 2) depending on the model
 use_tools: null                  # Which additional tools to use by agent. (e.g. 'fs,web_search')
 agent_prelude: null              # Set a session to use when starting the agent. (e.g. temp, default)
-
+instructions: null               # Override the instructions for the agent, have no effect for dynamic instructions
 variables:                       # Custom default values for the agent variables
   <key>: <value>
diff --git a/config.example.yaml b/config.example.yaml
index 470f93d2..aa26de7c 100644
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -1,7 +1,7 @@
 # ---- llm ----
 model: openai:gpt-4o             # Specify the LLM to use
-temperature: null                # Set default temperature parameter
-top_p: null                      # Set default top-p parameter, range (0, 1)
+temperature: null                # Set default temperature parameter (0, 1)
+top_p: null                      # Set default top-p parameter, with a range of (0, 1) or (0, 2) depending on the model
 
 # ---- behavior ----
 stream: true                     # Controls whether to use the stream-style API.
diff --git a/src/config/agent.rs b/src/config/agent.rs
index d3f248e0..a666bdfe 100644
--- a/src/config/agent.rs
+++ b/src/config/agent.rs
@@ -173,8 +173,6 @@ impl Agent {
     }
 
     pub fn export(&self) -> Result<String> {
-        let mut agent = self.clone();
-        agent.definition.instructions = self.interpolated_instructions();
         let mut value = json!({});
         value["name"] = json!(self.name());
         let variables = self.variables();
@@ -182,7 +180,9 @@ impl Agent {
             value["variables"] = serde_json::to_value(variables)?;
         }
         value["config"] = json!(self.config);
-        value["definition"] = json!(self.definition);
+        let mut definition = self.definition.clone();
+        definition.instructions = self.interpolated_instructions();
+        value["definition"] = json!(definition);
         value["functions_dir"] = Config::agent_functions_dir(&self.name)
             .display()
             .to_string()
@@ -224,6 +224,7 @@ impl Agent {
             .session_dynamic_instructions
             .clone()
             .or_else(|| self.shared_dynamic_instructions.clone())
+            .or_else(|| self.config.instructions.clone())
             .unwrap_or_else(|| self.definition.instructions.clone());
         for (k, v) in self.variables() {
             output = output.replace(&format!("{{{{{k}}}}}"), v)
@@ -398,6 +399,8 @@ pub struct AgentConfig {
     pub use_tools: Option<String>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub agent_prelude: Option<String>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub instructions: Option<String>,
     #[serde(default, skip_serializing_if = "IndexMap::is_empty")]
     pub variables: AgentVariables,
 }
@@ -437,6 +440,9 @@ impl AgentConfig {
         if let Some(v) = read_env_value::<String>(&with_prefix("agent_prelude")) {
             self.agent_prelude = v;
         }
+        if let Some(v) = read_env_value::<String>(&with_prefix("instructions")) {
+            self.instructions = v;
+        }
         if let Ok(v) = env::var(with_prefix("variables")) {
             if let Ok(v) = serde_json::from_str(&v) {
                 self.variables = v;