diff --git a/skills/auto-tmux/SKILL.md b/skills/auto-tmux/SKILL.md
index a438f54..416196f 100644
--- a/skills/auto-tmux/SKILL.md
+++ b/skills/auto-tmux/SKILL.md
@@ -76,6 +76,7 @@ tmux capture-pane -t <session>:<window>.<pane> -p -S -120
 **向指定 pane 发送命令或确认键**
 ```bash
 skills/auto-tmux/scripts/auto-tmux.sh send -t <session>:<window>.<pane> --text "make test" --enter
+skills/auto-tmux/scripts/auto-tmux.sh paste -t <session>:<window>.<pane> --file /tmp/prompt.md --enter --dry-run
 skills/auto-tmux/scripts/auto-tmux.sh rescue -t <session>:<window>.<pane> --pattern "(y/n)" --reply y
 ```
 
diff --git a/skills/auto-tmux/references/automation.md b/skills/auto-tmux/references/automation.md
index 1d00a8a..4c97ab7 100644
--- a/skills/auto-tmux/references/automation.md
+++ b/skills/auto-tmux/references/automation.md
@@ -20,6 +20,7 @@
 | `inspect` | 输出单个 pane 元信息和最近输出 | 默认脱敏，只读 |
 | `capture` | 读取指定 pane 最近输出 | 默认脱敏，可保存到文件 |
 | `send` | 向指定 pane 发送文本或按键 | 先打印上下文，危险文本需 `--force` |
+| `paste` | 通过 tmux buffer 粘贴文件内容 | 适合长 prompt，多行内容先 `--dry-run` |
 | `broadcast` | 向指定 session 全部 pane 发送文本或按键 | 必须显式 session，支持 `--dry-run` |
 | `rescue` | pattern 命中后发送确认 | 不命中不发送 |
 | `scan` | 批量巡检 pane 输出 | 可按 session 限定范围 |
@@ -114,6 +115,7 @@ skills/auto-tmux/scripts/swarm-dispatch.sh --role worker --target "$target" --ta
 target="$(tmux list-panes -t ai-hub:worker1 -F '#S:#I.#P' | head -n 1)"
 skills/auto-tmux/scripts/auto-tmux.sh inspect -t "$target" -n 40
 skills/auto-tmux/scripts/auto-tmux.sh send -t "$target" --text "make test" --enter
+skills/auto-tmux/scripts/auto-tmux.sh paste -t "$target" --file /tmp/prompt.md --enter --dry-run
 ```
 
 如果要清空当前输入行后发送：
diff --git a/skills/auto-tmux/references/prompt-templates.md b/skills/auto-tmux/references/prompt-templates.md
index 54f153b..33174a0 100644
--- a/skills/auto-tmux/references/prompt-templates.md
+++ b/skills/auto-tmux/references/prompt-templates.md
@@ -95,6 +95,16 @@ skills/auto-tmux/scripts/auto-tmux.sh send \
   --enter
 ```
 
+长 prompt 可以用 tmux buffer 粘贴：
+
+```bash
+skills/auto-tmux/scripts/auto-tmux.sh paste \
+  -t "$target" \
+  --file /tmp/worker-prompt.md \
+  --enter \
+  --dry-run
+```
+
 ## 注意事项
 
 - Prompt 只定义职责和边界，不替代测试、lint、diff、CI 等硬门禁。
diff --git a/skills/auto-tmux/scripts/README.md b/skills/auto-tmux/scripts/README.md
index dc9d803..ef5df03 100644
--- a/skills/auto-tmux/scripts/README.md
+++ b/skills/auto-tmux/scripts/README.md
@@ -33,6 +33,7 @@ skills/auto-tmux/scripts/auto-tmux.sh capture -t "$target" -n 80
 
 # 发送命令并回车
 skills/auto-tmux/scripts/auto-tmux.sh send -t "$target" --text "make test" --enter
+skills/auto-tmux/scripts/auto-tmux.sh paste -t "$target" --file /tmp/prompt.md --enter --dry-run
 
 # 扫描某个 session 的错误
 skills/auto-tmux/scripts/auto-tmux.sh scan --session ai-hub --pattern "ERROR|Traceback"
diff --git a/skills/auto-tmux/scripts/auto-tmux-smoke-test.sh b/skills/auto-tmux/scripts/auto-tmux-smoke-test.sh
index f4f9426..6ecaf08 100755
--- a/skills/auto-tmux/scripts/auto-tmux-smoke-test.sh
+++ b/skills/auto-tmux/scripts/auto-tmux-smoke-test.sh
@@ -17,10 +17,11 @@ BRIEF_DIR="/tmp/auto-tmux-smoke-brief-$$"
 WATCH_DIR="/tmp/auto-tmux-smoke-watch-$$"
 DISPATCH_PROMPT="/tmp/auto-tmux-smoke-dispatch-$$.md"
 TASK_IMPORT_FILE="/tmp/auto-tmux-smoke-tasks-$$.txt"
+PASTE_FILE="/tmp/auto-tmux-smoke-paste-$$.txt"
 
 cleanup() {
   tmux kill-session -t "$SESSION" 2>/dev/null || true
-  rm -rf "$SWARM_DIR" "$SNAPSHOT_DIR" "$RECORD_DIR" "$BRIEF_DIR" "$WATCH_DIR" "$DISPATCH_PROMPT" "$TASK_IMPORT_FILE"
+  rm -rf "$SWARM_DIR" "$SNAPSHOT_DIR" "$RECORD_DIR" "$BRIEF_DIR" "$WATCH_DIR" "$DISPATCH_PROMPT" "$TASK_IMPORT_FILE" "$PASTE_FILE"
 }
 trap cleanup EXIT
 
@@ -46,6 +47,8 @@ worker_target="$(tmux list-panes -t "$SESSION:worker1" -F '#S:#I.#P' | head -n 1
 "$AUTO_TMUX" capture -t "$commander_target" -n 10 >/tmp/auto-tmux-smoke-capture.txt
 "$AUTO_TMUX" inspect -t "$commander_target" -n 10 >/tmp/auto-tmux-smoke-inspect.txt
 grep -q 'pane inspect' /tmp/auto-tmux-smoke-inspect.txt
+printf '%s\n' 'echo AUTO_TMUX_PASTE_OK' > "$PASTE_FILE"
+"$AUTO_TMUX" paste -t "$worker_target" --file "$PASTE_FILE" --enter --dry-run >/tmp/auto-tmux-smoke-paste-dry-run.txt
 "$AUTO_TMUX" broadcast --session "$SESSION" --text "pwd" --enter --dry-run >/tmp/auto-tmux-smoke-broadcast.txt
 "$AUTO_TMUX" send -t "$worker_target" --text "echo AUTO_TMUX_SMOKE_OK" --enter
 "$AUTO_TMUX" wait -t "$worker_target" --pattern "AUTO_TMUX_SMOKE_OK" --timeout 10 >/tmp/auto-tmux-smoke-wait.txt
diff --git a/skills/auto-tmux/scripts/auto-tmux.sh b/skills/auto-tmux/scripts/auto-tmux.sh
index 5922cd3..118f17b 100755
--- a/skills/auto-tmux/scripts/auto-tmux.sh
+++ b/skills/auto-tmux/scripts/auto-tmux.sh
@@ -18,6 +18,7 @@ Usage:
   auto-tmux.sh inspect -t TARGET [-n LINES] [--no-redact]
   auto-tmux.sh capture -t TARGET [-n LINES] [--save FILE] [--no-redact]
   auto-tmux.sh send -t TARGET (--text TEXT | --key KEY) [--enter] [--clear] [--force] [--dry-run]
+  auto-tmux.sh paste -t TARGET --file FILE [--enter] [--clear] [--force] [--dry-run]
   auto-tmux.sh broadcast --session NAME (--text TEXT | --key KEY) [--enter] [--clear] [--force] [--dry-run]
   auto-tmux.sh rescue -t TARGET [--pattern REGEX] [--reply TEXT] [-n LINES] [--force] [--dry-run]
   auto-tmux.sh scan [--session NAME] [-n LINES] [--pattern REGEX] [--rescue] [--reply TEXT] [--save-dir DIR]
@@ -36,6 +37,7 @@ Examples:
   auto-tmux.sh inspect -t <target-from-topology> -n 40
   auto-tmux.sh capture -t <target-from-topology> -n 80
   auto-tmux.sh send -t <target-from-topology> --text "make test" --enter
+  auto-tmux.sh paste -t <target-from-topology> --file /tmp/prompt.md --enter --dry-run
   auto-tmux.sh broadcast --session ai-hub --text "pwd" --enter --dry-run
   auto-tmux.sh rescue -t <target-from-topology> --pattern "(y/n)" --reply y
   auto-tmux.sh scan --session ai-hub --pattern "ERROR|Traceback"
@@ -379,6 +381,56 @@ cmd_send() {
   fi
 }
 
+cmd_paste() {
+  local target=""
+  local file=""
+  local enter="0"
+  local clear="0"
+  local force="0"
+  local dry_run="0"
+  while [[ $# -gt 0 ]]; do
+    case "$1" in
+      -t|--target) target="${2:-}"; shift 2 ;;
+      --file) file="${2:-}"; shift 2 ;;
+      --enter) enter="1"; shift ;;
+      --clear) clear="1"; shift ;;
+      --force) force="1"; shift ;;
+      --dry-run) dry_run="1"; shift ;;
+      -h|--help) usage; exit 0 ;;
+      *) die "unknown paste option: $1" ;;
+    esac
+  done
+
+  require_tmux
+  require_target "$target"
+  [[ -n "$file" ]] || die "paste requires --file FILE"
+  [[ -f "$file" ]] || die "paste file not found: $file"
+
+  printf -- '--- current context: %s ---\n' "$target" >&2
+  capture_print "$target" 40 0 >&2 || true
+
+  if [[ "$force" != "1" ]] && is_dangerous_text "$(cat "$file")"; then
+    die "refusing dangerous paste file without --force: $file"
+  fi
+
+  if [[ "$dry_run" == "1" ]]; then
+    printf '[dry-run] target=%s clear=%s file=%s bytes=%s enter=%s\n' \
+      "$target" "$clear" "$file" "$(wc -c < "$file" | tr -d ' ')" "$enter"
+    return 0
+  fi
+
+  cancel_copy_mode_if_needed "$target"
+  if [[ "$clear" == "1" ]]; then
+    tmux send-keys -t "$target" C-u
+  fi
+  local buffer_name="auto-tmux-paste-$$"
+  tmux load-buffer -b "$buffer_name" "$file"
+  tmux paste-buffer -t "$target" -b "$buffer_name" -d
+  if [[ "$enter" == "1" ]]; then
+    tmux send-keys -t "$target" Enter
+  fi
+}
+
 cmd_rescue() {
   local target=""
   local pattern="$DEFAULT_RESCUE_PATTERN"
@@ -619,6 +671,7 @@ main() {
     inspect) cmd_inspect "$@" ;;
     capture) cmd_capture "$@" ;;
     send) cmd_send "$@" ;;
+    paste) cmd_paste "$@" ;;
     broadcast) cmd_broadcast "$@" ;;
     rescue) cmd_rescue "$@" ;;
     scan) cmd_scan "$@" ;;