diff --git a/src/agent/agent_loop.rs b/src/agent/agent_loop.rs
index 63af2a6..21cd5a4 100644
--- a/src/agent/agent_loop.rs
+++ b/src/agent/agent_loop.rs
@@ -1448,8 +1448,8 @@ mod tests {
             context_window_tokens: None,
             model_extra: std::collections::HashMap::new(),
             max_tool_iterations: 1,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         }
@@ -1554,9 +1554,9 @@ mod tests {
 
     #[test]
     fn test_truncate_tool_result_handles_utf8_char_boundaries() {
-        let input = "范".repeat(20_500);
+        let input = "范".repeat(100_500);
 
-        let output = truncate_tool_result(&input, 20_000);
+        let output = truncate_tool_result(&input, 100_000);
 
         assert!(output.contains("Output truncated"));
         assert!(output.is_char_boundary(output.len()));
diff --git a/src/cli/init.rs b/src/cli/init.rs
index e4fcfef..3337fd3 100644
--- a/src/cli/init.rs
+++ b/src/cli/init.rs
@@ -555,7 +555,7 @@ impl InitWizard {
             provider: selected_provider.clone(),
             model: selected_model.clone(),
             max_tool_iterations: 100,
-            tool_result_max_chars: 20000,
+            tool_result_max_chars: 100_000,
             context_tool_result_trim_chars: 2000,
         };
 
diff --git a/src/config/mod.rs b/src/config/mod.rs
index fe46693..b8da547 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -438,7 +438,7 @@ fn default_max_tool_iterations() -> usize {
 }
 
 fn default_tool_result_max_chars() -> usize {
-    20_000
+    100_000
 }
 
 fn default_context_tool_result_trim_chars() -> usize {
@@ -1077,7 +1077,7 @@ mod tests {
         assert_eq!(provider_config.temperature, Some(0.0));
         assert_eq!(provider_config.max_tokens, None);
         assert_eq!(provider_config.llm_timeout_secs, 120);
-        assert_eq!(provider_config.tool_result_max_chars, 20_000);
+        assert_eq!(provider_config.tool_result_max_chars, 100_000);
         assert_eq!(provider_config.context_tool_result_trim_chars, 2_000);
         assert_eq!(provider_config.context_summary_char_budget(), 32_000);
     }
@@ -1322,7 +1322,7 @@ mod tests {
 
         let config = Config::load(file.path().to_str().unwrap()).unwrap();
         assert_eq!(config.agents["default"].max_tool_iterations, 100);
-        assert_eq!(config.agents["default"].tool_result_max_chars, 20_000);
+        assert_eq!(config.agents["default"].tool_result_max_chars, 100_000);
         assert_eq!(
             config.agents["default"].context_tool_result_trim_chars,
             2_000
diff --git a/src/gateway/agent_prompt_provider.rs b/src/gateway/agent_prompt_provider.rs
index 5364db5..1497803 100644
--- a/src/gateway/agent_prompt_provider.rs
+++ b/src/gateway/agent_prompt_provider.rs
@@ -121,7 +121,7 @@ mod tests {
             context_window_tokens: None,
             model_extra: HashMap::new(),
             max_tool_iterations: 1,
-            tool_result_max_chars: 20_000,
+            tool_result_max_chars: 100_000,
             context_tool_result_trim_chars: 20_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
diff --git a/src/gateway/provider_config_service.rs b/src/gateway/provider_config_service.rs
index 0bee5a7..f498e5d 100644
--- a/src/gateway/provider_config_service.rs
+++ b/src/gateway/provider_config_service.rs
@@ -65,7 +65,7 @@ mod tests {
             context_window_tokens: None,
             model_extra: HashMap::new(),
             max_tool_iterations: 1,
-            tool_result_max_chars: 20_000,
+            tool_result_max_chars: 100_000,
             context_tool_result_trim_chars: 20_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
diff --git a/src/gateway/session.rs b/src/gateway/session.rs
index 8f961b1..b21d5ae 100644
--- a/src/gateway/session.rs
+++ b/src/gateway/session.rs
@@ -742,8 +742,8 @@ mod tests {
             context_window_tokens: None,
             model_extra: HashMap::new(),
             max_tool_iterations: 1,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         }
@@ -1004,8 +1004,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1052,8 +1052,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1130,8 +1130,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1218,8 +1218,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1308,8 +1308,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 1,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1397,8 +1397,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1468,8 +1468,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1548,8 +1548,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 30,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
@@ -1615,8 +1615,8 @@ mod tests {
             max_tool_iterations: 1,
             llm_timeout_secs: 1,
             memory_maintenance_timeout_secs: 600,
-            tool_result_max_chars: 20_000,
-            context_tool_result_trim_chars: 20_000,
+            tool_result_max_chars: 100_000,
+            context_tool_result_trim_chars: 100_000,
             max_images_in_context: 1,
             max_image_age_rounds: 10,
         };
diff --git a/src/tools/file_read.rs b/src/tools/file_read.rs
index f170d8e..6a8a8a8 100644
--- a/src/tools/file_read.rs
+++ b/src/tools/file_read.rs
@@ -7,7 +7,7 @@ use crate::text::take_prefix_chars;
 use crate::tools::traits::{Tool, ToolResult};
 use crate::tools::extract_u64;
 
-const MAX_CHARS: usize = 128_000;
+const MAX_CHARS: usize = 100_000;
 const DEFAULT_LIMIT: usize = 2000;
 
 pub struct FileReadTool {