diff --git a/src/tools/interactive-bash/constants.ts b/src/tools/interactive-bash/constants.ts
index 4b83fc7..2dad94c 100644
--- a/src/tools/interactive-bash/constants.ts
+++ b/src/tools/interactive-bash/constants.ts
@@ -1,5 +1,22 @@
 export const DEFAULT_TIMEOUT_MS = 60_000
 
+export const BLOCKED_TMUX_SUBCOMMANDS = [
+  "capture-pane",
+  "capturep",
+  "save-buffer",
+  "saveb",
+  "show-buffer",
+  "showb",
+  "pipe-pane",
+  "pipep",
+]
+
 export const INTERACTIVE_BASH_DESCRIPTION = `Execute tmux commands for interactive terminal session management.
 
-Use session names following the pattern "omo-{name}" for automatic tracking.`
+Use session names following the pattern "omo-{name}" for automatic tracking.
+
+BLOCKED COMMANDS (use bash tool instead):
+- capture-pane / capturep: Use bash to read output files or pipe output
+- save-buffer / saveb: Use bash to save content to files
+- show-buffer / showb: Use bash to read buffer content
+- pipe-pane / pipep: Use bash for piping output`
diff --git a/src/tools/interactive-bash/tools.ts b/src/tools/interactive-bash/tools.ts
index 32ccadd..d9be453 100644
--- a/src/tools/interactive-bash/tools.ts
+++ b/src/tools/interactive-bash/tools.ts
@@ -1,5 +1,5 @@
 import { tool } from "@opencode-ai/plugin/tool"
-import { DEFAULT_TIMEOUT_MS, INTERACTIVE_BASH_DESCRIPTION } from "./constants"
+import { BLOCKED_TMUX_SUBCOMMANDS, DEFAULT_TIMEOUT_MS, INTERACTIVE_BASH_DESCRIPTION } from "./constants"
 import { getCachedTmuxPath } from "./utils"
 
 /**
@@ -62,6 +62,11 @@ export const interactive_bash = tool({
         return "Error: Empty tmux command"
       }
 
+      const subcommand = parts[0].toLowerCase()
+      if (BLOCKED_TMUX_SUBCOMMANDS.includes(subcommand)) {
+        return `Error: '${parts[0]}' is blocked. Use bash tool instead for capturing/printing terminal output.`
+      }
+
       const proc = Bun.spawn([tmuxPath, ...parts], {
         stdout: "pipe",
         stderr: "pipe",