diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84ae3268..7288a1cc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1440,6 +1440,7 @@ add_executable(wowee_editor
     tools/editor/cli_companions_catalog.cpp
     tools/editor/cli_spell_mechanics_catalog.cpp
     tools/editor/cli_keybindings_catalog.cpp
+    tools/editor/cli_tree_summary_md.cpp
     tools/editor/cli_quest_objective.cpp
     tools/editor/cli_quest_reward.cpp
     tools/editor/cli_clone.cpp
diff --git a/tools/editor/cli_arg_required.cpp b/tools/editor/cli_arg_required.cpp
index d57e8b9a..adb6f1e6 100644
--- a/tools/editor/cli_arg_required.cpp
+++ b/tools/editor/cli_arg_required.cpp
@@ -135,7 +135,7 @@ const char* const kArgRequired[] = {
     "--info-wliq", "--validate-wliq",
     "--export-wliq-json", "--import-wliq-json",
     "--info-magic", "--summary-dir", "--rename-by-magic",
-    "--bulk-rename-by-magic", "--touch-tree",
+    "--bulk-rename-by-magic", "--touch-tree", "--tree-summary-md",
     "--gen-animations", "--gen-animations-combat", "--gen-animations-movement",
     "--info-wani", "--validate-wani",
     "--export-wani-json", "--import-wani-json",
diff --git a/tools/editor/cli_dispatch.cpp b/tools/editor/cli_dispatch.cpp
index c6dbdfff..b55d6570 100644
--- a/tools/editor/cli_dispatch.cpp
+++ b/tools/editor/cli_dispatch.cpp
@@ -89,6 +89,7 @@
 #include "cli_companions_catalog.hpp"
 #include "cli_spell_mechanics_catalog.hpp"
 #include "cli_keybindings_catalog.hpp"
+#include "cli_tree_summary_md.hpp"
 #include "cli_quest_objective.hpp"
 #include "cli_quest_reward.hpp"
 #include "cli_clone.hpp"
@@ -219,6 +220,7 @@ constexpr DispatchFn kDispatchTable[] = {
     handleCompanionsCatalog,
     handleSpellMechanicsCatalog,
     handleKeybindingsCatalog,
+    handleTreeSummaryMd,
     handleQuestObjective,
     handleQuestReward,
     handleClone,
diff --git a/tools/editor/cli_help.cpp b/tools/editor/cli_help.cpp
index b21e5ceb..607ad528 100644
--- a/tools/editor/cli_help.cpp
+++ b/tools/editor/cli_help.cpp
@@ -1359,6 +1359,8 @@ void printUsage(const char* argv0) {
     std::printf("                         Apply --rename-by-magic recursively to every file in <dir>. Conflicts are skipped without --force; exits 1 if any rename failed\n");
     std::printf("  --touch-tree <dir> [--json] [--quiet]\n");
     std::printf("                         CI integrity check: open every recognized .w* file in <dir>, parse standard header, report PASS/FAIL + extension mismatches. Exit 1 on any failure\n");
+    std::printf("  --tree-summary-md <dir> [out.md]\n");
+    std::printf("                         Emit a Markdown report of a content tree (per-format counts + per-file detail with catalog name + entry count). Stdout if no out path\n");
     std::printf("  --gen-animations <wani-base> [name]\n");
     std::printf("                         Emit .wani starter: 5 essential animations (Stand / Walk / Run / Death / AttackUnarmed) with fallback chains\n");
     std::printf("  --gen-animations-combat <wani-base> [name]\n");
diff --git a/tools/editor/cli_tree_summary_md.cpp b/tools/editor/cli_tree_summary_md.cpp
new file mode 100644
index 00000000..baf2d0ff
--- /dev/null
+++ b/tools/editor/cli_tree_summary_md.cpp
@@ -0,0 +1,196 @@
+#include "cli_tree_summary_md.hpp"
+#include "cli_arg_parse.hpp"
+#include "cli_format_table.hpp"
+
+#include <cstdint>
+#include <cstdio>
+#include <cstring>
+#include <filesystem>
+#include <fstream>
+#include <map>
+#include <sstream>
+#include <string>
+#include <vector>
+
+namespace wowee {
+namespace editor {
+namespace cli {
+
+namespace {
+
+namespace fs = std::filesystem;
+
+struct FileRow {
+    fs::path relPath;
+    const FormatMagicEntry* fmt;
+    uint32_t version;
+    uint32_t entryCount;
+    std::string catalogName;
+    bool hasHeader;
+    uintmax_t bytes;
+};
+
+// Read the standard catalog header (magic+version+name+
+// entryCount). World/asset formats don't have this layout —
+// for those we leave the header fields blank.
+bool peekHeader(const fs::path& path, char magic[4],
+                uint32_t& version, std::string& catalogName,
+                uint32_t& entryCount) {
+    std::ifstream is(path, std::ios::binary);
+    if (!is) return false;
+    if (!is.read(magic, 4) || is.gcount() != 4) return false;
+    if (!is.read(reinterpret_cast<char*>(&version), 4)) return false;
+    uint32_t nameLen = 0;
+    if (!is.read(reinterpret_cast<char*>(&nameLen), 4)) return false;
+    if (nameLen > (1u << 20)) return false;
+    catalogName.resize(nameLen);
+    if (nameLen > 0) {
+        if (!is.read(catalogName.data(), nameLen)) return false;
+    }
+    if (!is.read(reinterpret_cast<char*>(&entryCount), 4)) return false;
+    return true;
+}
+
+int handleSummary(int& i, int argc, char** argv) {
+    std::string dir = argv[++i];
+    std::string outPath;
+    if (parseOptArg(i, argc, argv)) outPath = argv[++i];
+    if (!fs::exists(dir) || !fs::is_directory(dir)) {
+        std::fprintf(stderr,
+            "tree-summary-md: not a directory: %s\n", dir.c_str());
+        return 1;
+    }
+    std::vector<FileRow> rows;
+    std::map<std::string, uint64_t> formatFileCounts;
+    std::map<std::string, uint64_t> formatEntryCounts;
+    uint64_t totalFiles = 0;
+    uint64_t totalRecognized = 0;
+    uint64_t totalBytes = 0;
+    for (const auto& entry : fs::recursive_directory_iterator(dir)) {
+        if (!entry.is_regular_file()) continue;
+        ++totalFiles;
+        char magic[4];
+        std::ifstream is(entry.path(), std::ios::binary);
+        if (!is.read(magic, 4) || is.gcount() != 4) continue;
+        const FormatMagicEntry* fmt = findFormatByMagic(magic);
+        if (!fmt) continue;
+        ++totalRecognized;
+        FileRow r;
+        r.relPath = fs::relative(entry.path(), dir);
+        r.fmt = fmt;
+        r.version = 0; r.entryCount = 0;
+        r.bytes = entry.file_size();
+        // Re-open and parse standard header for catalog formats.
+        // Skip for world/asset formats (infoFlag == nullptr).
+        if (fmt->infoFlag != nullptr) {
+            char headerMagic[4];
+            uint32_t v = 0, ec = 0;
+            std::string cn;
+            if (peekHeader(entry.path(), headerMagic, v, cn, ec)) {
+                r.version = v; r.catalogName = cn;
+                r.entryCount = ec; r.hasHeader = true;
+                formatEntryCounts[fmt->magic] += ec;
+            } else {
+                r.hasHeader = false;
+            }
+        } else {
+            r.hasHeader = false;
+        }
+        formatFileCounts[fmt->magic] += 1;
+        totalBytes += r.bytes;
+        rows.push_back(std::move(r));
+    }
+    // Build the markdown.
+    std::ostringstream md;
+    md << "# Wowee open-format inventory: " << dir << "\n\n";
+    md << "Generated by `--tree-summary-md`. "
+       << "Walks the directory recursively and identifies every "
+       << "Wowee open-format file by its 4-byte magic.\n\n";
+    md << "## Summary\n\n";
+    md << "| Stat | Value |\n";
+    md << "|------|-------|\n";
+    md << "| Total files scanned | " << totalFiles << " |\n";
+    md << "| Recognized .w* files | " << totalRecognized << " |\n";
+    md << "| Unrecognized files | "
+       << (totalFiles - totalRecognized) << " |\n";
+    md << "| Total recognized bytes | " << totalBytes << " |\n\n";
+    if (!formatFileCounts.empty()) {
+        md << "## Per-format breakdown\n\n";
+        md << "| Magic | Extension | Files | Total entries | Description |\n";
+        md << "|-------|-----------|-------|---------------|-------------|\n";
+        for (const auto& kv : formatFileCounts) {
+            std::string magicStr = kv.first;
+            const FormatMagicEntry* fmt = nullptr;
+            for (const FormatMagicEntry* p = formatTableBegin();
+                 p != formatTableEnd(); ++p) {
+                if (std::memcmp(p->magic, magicStr.data(), 4) == 0) {
+                    fmt = p; break;
+                }
+            }
+            uint64_t entries = formatEntryCounts.count(magicStr)
+                ? formatEntryCounts[magicStr] : 0;
+            md << "| `" << magicStr << "` | `"
+               << (fmt ? fmt->extension : "?") << "` | "
+               << kv.second << " | " << entries << " | "
+               << (fmt ? fmt->description : "?") << " |\n";
+        }
+        md << "\n";
+    }
+    if (!rows.empty()) {
+        md << "## Per-file detail\n\n";
+        md << "| Path | Magic | Version | Catalog name | Entries | Bytes |\n";
+        md << "|------|-------|---------|--------------|---------|-------|\n";
+        for (const auto& r : rows) {
+            char ms[5] = {r.fmt->magic[0], r.fmt->magic[1],
+                          r.fmt->magic[2], r.fmt->magic[3], 0};
+            md << "| `" << r.relPath.string() << "` | `"
+               << ms << "` | ";
+            if (r.hasHeader) {
+                md << r.version << " | `" << r.catalogName << "` | "
+                   << r.entryCount << " | ";
+            } else {
+                md << "- | - | - | ";
+            }
+            md << r.bytes << " |\n";
+        }
+        md << "\n";
+    }
+    md << "## How to inspect\n\n";
+    md << "Use `--info-magic <path>` to identify any file by magic, "
+       << "or the per-format `--info-*` flag listed in `--list-formats`.\n";
+    std::string output = md.str();
+    if (outPath.empty()) {
+        std::printf("%s", output.c_str());
+    } else {
+        std::ofstream out(outPath);
+        if (!out) {
+            std::fprintf(stderr,
+                "tree-summary-md: cannot write %s\n",
+                outPath.c_str());
+            return 1;
+        }
+        out << output;
+        std::printf("Wrote %s\n", outPath.c_str());
+        std::printf("  scanned files     : %llu\n",
+                    static_cast<unsigned long long>(totalFiles));
+        std::printf("  recognized .w*    : %llu\n",
+                    static_cast<unsigned long long>(totalRecognized));
+        std::printf("  unique formats    : %zu\n",
+                    formatFileCounts.size());
+    }
+    return 0;
+}
+
+} // namespace
+
+bool handleTreeSummaryMd(int& i, int argc, char** argv, int& outRc) {
+    if (std::strcmp(argv[i], "--tree-summary-md") == 0 &&
+        i + 1 < argc) {
+        outRc = handleSummary(i, argc, argv); return true;
+    }
+    return false;
+}
+
+} // namespace cli
+} // namespace editor
+} // namespace wowee
diff --git a/tools/editor/cli_tree_summary_md.hpp b/tools/editor/cli_tree_summary_md.hpp
new file mode 100644
index 00000000..942bee0a
--- /dev/null
+++ b/tools/editor/cli_tree_summary_md.hpp
@@ -0,0 +1,11 @@
+#pragma once
+
+namespace wowee {
+namespace editor {
+namespace cli {
+
+bool handleTreeSummaryMd(int& i, int argc, char** argv, int& outRc);
+
+} // namespace cli
+} // namespace editor
+} // namespace wowee