diff --git a/registry/coder/modules/claude-code/main.tf b/registry/coder/modules/claude-code/main.tf
index ae4ec412..83d31b41 100644
--- a/registry/coder/modules/claude-code/main.tf
+++ b/registry/coder/modules/claude-code/main.tf
@@ -171,7 +171,9 @@ resource "coder_script" "claude_code" {
       export LANG=en_US.UTF-8
       export LC_ALL=en_US.UTF-8
 
-      tmux new-session -d -s claude-code-agentapi -c ${var.folder} 'agentapi server -- bash -c "claude --dangerously-skip-permissions \"$CODER_MCP_CLAUDE_TASK_PROMPT\" | tee -a \"$HOME/.claude-code.log\""; exec bash'
+      # use low width to fit in the tasks UI sidebar. height is adjusted to ~match the default 80k (80x1000) characters
+      # visible in the terminal screen.
+      tmux new-session -d -s claude-code-agentapi -c ${var.folder} 'agentapi server --term-width 56 --term-height 1425 -- bash -c "claude --dangerously-skip-permissions \"$CODER_MCP_CLAUDE_TASK_PROMPT\" | tee -a \"$HOME/.claude-code.log\""; exec bash'
       echo "Waiting for agentapi server to start on port 3284..."
       for i in $(seq 1 15); do
         if lsof -i :3284 | grep -q 'LISTEN'; then
@@ -260,7 +262,9 @@ resource "coder_app" "claude_code" {
 
       if ! tmux has-session -t claude-code-agentapi 2>/dev/null; then
         echo "Starting a new Claude Code agentapi tmux session." | tee -a "$HOME/.claude-code.log"
-        tmux new-session -d -s claude-code-agentapi -c ${var.folder} 'agentapi server -- bash -c "claude --dangerously-skip-permissions | tee -a \"$HOME/.claude-code.log\""; exec bash'
+        # use low width to fit in the tasks UI sidebar. height is adjusted to ~match the default 80k (80x1000) characters
+        # visible in the terminal screen.
+        tmux new-session -d -s claude-code-agentapi -c ${var.folder} 'agentapi server --term-width 56 --term-height 1425 -- bash -c "claude --dangerously-skip-permissions | tee -a \"$HOME/.claude-code.log\""; exec bash'
       fi
 
       if tmux has-session -t claude-code 2>/dev/null; then