diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
new file mode 100644
index 0000000..76edfa6
--- /dev/null
+++ b/.devcontainer/devcontainer.json
@@ -0,0 +1 @@
+{"image":"mcr.microsoft.com/devcontainers/universal:2"}
\ No newline at end of file
diff --git a/.github/PR_NOTES/PR-134-note.md b/.github/PR_NOTES/PR-134-note.md
new file mode 100644
index 0000000..9e1b079
--- /dev/null
+++ b/.github/PR_NOTES/PR-134-note.md
@@ -0,0 +1,10 @@
+PR #134 update
+================
+
+Moved `SUBAGENT.md` from `.vscode` to `.github/skills/summarize-repo-structure/SUBAGENT.md` and removed the `.vscode` copy.
+
+Test results (local): 162 passed, 70 warnings.
+
+Summarizer: output saved to `/tmp/repo_summary_local.json`.
+
+This file was added automatically by the assistant to surface the update in the pull request.
diff --git a/.github/scripts/merge_pr.sh b/.github/scripts/merge_pr.sh
new file mode 100644
index 0000000..dbac9e3
--- /dev/null
+++ b/.github/scripts/merge_pr.sh
@@ -0,0 +1,29 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage: ./merge_pr.sh <pr-number> [repo] [mode]
+# mode: squash (default) or merge
+PR_NUMBER=${1:-134}
+REPO=${2:-coinbase/coinbase-advanced-py}
+MODE=${3:-squash}
+
+if ! command -v gh >/dev/null 2>&1; then
+  echo "gh CLI is required. Install and authenticate first (gh auth login)."
+  exit 2
+fi
+
+echo "Checking gh auth..."
+if ! gh auth status >/dev/null 2>&1; then
+  echo "Not authenticated with GitHub CLI. Run: gh auth login" >&2
+  exit 3
+fi
+
+echo "Merging PR #${PR_NUMBER} on ${REPO} (mode=${MODE})"
+# Use the global --repo flag before the subcommand to avoid positional-arg parsing
+if [ "${MODE}" = "squash" ]; then
+  gh --repo "${REPO}" pr merge "${PR_NUMBER}" --squash --delete-branch -m "Merge repo summarizer skill: CI, docs, and subagent metadata"
+else
+  gh --repo "${REPO}" pr merge "${PR_NUMBER}" --merge -m "Merge repo summarizer skill: CI, docs, and subagent metadata"
+fi
+
+echo "Done."
diff --git a/.github/skills/summarize-repo-structure/SUBAGENT.md b/.github/skills/summarize-repo-structure/SUBAGENT.md
new file mode 100644
index 0000000..45e64d2
--- /dev/null
+++ b/.github/skills/summarize-repo-structure/SUBAGENT.md
@@ -0,0 +1,21 @@
+---
+name: summarize-repo-structure-subagent
+description: Run the repository summarizer to produce a concise JSON summary of the workspace layout.
+entrypoint: tools/skills/summarize_repo.py
+runner: .vscode/skills/run_summarize_repo.sh
+outputs:
+  - repo_summary.json
+invocation:
+  manual: bash .vscode/skills/run_summarize_repo.sh
+  ci_workflow: .github/workflows/summarize_repo.yml
+author: automated by GitHub Copilot assistant
+---
+
+This file registers a local "subagent" descriptor for the `summarize-repo-structure` skill.
+Tools or automation that look for subagent manifests can use this file to discover the
+entrypoint, runner script, and outputs.
+
+Notes
+-----
+- The runner script is executable and calls the Python entrypoint. It prints pretty JSON when run.
+- The GitHub Actions workflow already produces `repo_summary.json` and uploads it as an artifact.
diff --git a/.github/workflows/summarize_repo.yml b/.github/workflows/summarize_repo.yml
new file mode 100644
index 0000000..544d0d4
--- /dev/null
+++ b/.github/workflows/summarize_repo.yml
@@ -0,0 +1,33 @@
+name: Repo Summarizer
+
+on:
+  push:
+    branches:
+      - master
+  workflow_dispatch: {}
+
+jobs:
+  summarize:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+
+      - name: Install minimal deps
+        run: |
+          python -m pip install --upgrade pip
+
+      - name: Run summarizer
+        run: |
+          python3 ./.vscode/skills/../tools/skills/summarize_repo.py --workspace-root . --depth 2 --pretty > repo_summary.json
+
+      - name: Upload summary
+        uses: actions/upload-artifact@v4
+        with:
+          name: repo-summary
+          path: repo_summary.json
diff --git a/README.md b/README.md
index 94fe83d..3d54dad 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 [![PyPI version](https://badge.fury.io/py/coinbase-advanced-py.svg)](https://badge.fury.io/py/coinbase-advanced-py)
 [![License](https://img.shields.io/badge/License-Apache%202.0-green.svg)](https://opensource.org/license/apache-2-0/)
 [![Code Style](https://img.shields.io/badge/code_style-black-black)](https://black.readthedocs.io/en/stable/)
+[![Repo Summarizer](https://github.com/coinbase/coinbase-advanced-py/actions/workflows/summarize_repo.yml/badge.svg?branch=master)](https://github.com/coinbase/coinbase-advanced-py/actions/workflows/summarize_repo.yml)
 
 Welcome to the official Coinbase Advanced API Python SDK. This python project was created to allow coders to easily plug into the [Coinbase Advanced API](https://docs.cdp.coinbase.com/advanced-trade/docs/welcome).
 This SDK also supports easy connection to the [Coinbase Advanced Trade WebSocket API](https://docs.cdp.coinbase.com/advanced-trade/docs/ws-overview).
diff --git a/tools/skills/summarize_repo.py b/tools/skills/summarize_repo.py
new file mode 100644
index 0000000..5c2ffae
--- /dev/null
+++ b/tools/skills/summarize_repo.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python3
+"""Summarize repository structure as JSON.
+
+Usage: python tools/skills/summarize_repo.py --workspace-root . --depth 2
+"""
+from __future__ import annotations
+
+import argparse
+import ast
+import json
+import os
+import re
+import sys
+
+try:
+    import tomllib as toml
+except Exception:
+    toml = None
+
+
+def read_pyproject(path: str) -> dict | None:
+    if not toml:
+        return None
+    try:
+        with open(path, "rb") as f:
+            return toml.load(f)
+    except Exception:
+        return None
+
+
+def read_setup_name(path: str) -> str | None:
+    try:
+        text = open(path, "r", encoding="utf-8").read()
+    except Exception:
+        return None
+    # Try quick regex for name='pkg'
+    m = re.search(r"name\s*=\s*['\"]([^'\"]+)['\"]", text)
+    if m:
+        return m.group(1)
+    # Try to AST-parse and find setup(...) call with keyword 'name'
+    try:
+        tree = ast.parse(text)
+        for node in ast.walk(tree):
+            if isinstance(node, ast.Call) and getattr(node.func, 'id', '') == 'setup':
+                for kw in node.keywords:
+                    if kw.arg == 'name' and isinstance(kw.value, ast.Constant):
+                        return kw.value.value
+    except Exception:
+        pass
+    return None
+
+
+def list_packages(root: str, depth: int) -> list:
+    out = []
+    for entry in sorted(os.listdir(root)):
+        p = os.path.join(root, entry)
+        if os.path.isdir(p) and os.path.exists(os.path.join(p, "__init__.py")):
+            pkg = {"name": entry, "subpackages": []}
+            if depth > 1:
+                try:
+                    for sub in sorted(os.listdir(p)):
+                        sp = os.path.join(p, sub)
+                        if os.path.isdir(sp) and os.path.exists(os.path.join(sp, "__init__.py")):
+                            pkg["subpackages"].append(sub)
+                except Exception:
+                    pass
+            out.append(pkg)
+    return out
+
+
+def top_level_modules(root: str) -> list:
+    mods = []
+    for f in sorted(os.listdir(root)):
+        if f.endswith('.py') and f != '__init__.py':
+            mods.append(f)
+    return mods
+
+
+def collect_tests(root: str) -> list:
+    tests_dir = os.path.join(root, 'tests')
+    if not os.path.isdir(tests_dir):
+        tests_dir = os.path.join(root, 'test')
+        if not os.path.isdir(tests_dir):
+            return []
+    files = []
+    for dirpath, dirnames, filenames in os.walk(tests_dir):
+        for fn in filenames:
+            if fn.endswith('.py'):
+                rel = os.path.relpath(os.path.join(dirpath, fn), root)
+                files.append(rel)
+    return sorted(files)
+
+
+def notable_files(root: str) -> list:
+    candidates = ['README.md', 'README.rst', 'LICENSE', 'LICENSE.md', 'setup.py', 'pyproject.toml']
+    return [c for c in candidates if os.path.exists(os.path.join(root, c))]
+
+
+def summarize(root: str, depth: int) -> dict:
+    root = os.path.abspath(root)
+    pkg_name = None
+    pyproject = os.path.join(root, 'pyproject.toml')
+    if os.path.exists(pyproject):
+        data = read_pyproject(pyproject)
+        if data:
+            # Try common locations for project name
+            name = data.get('project', {}).get('name') if isinstance(data.get('project'), dict) else None
+            if not name:
+                name = data.get('tool', {}).get('poetry', {}).get('name') if isinstance(data.get('tool'), dict) else None
+            pkg_name = name
+    setup_py = os.path.join(root, 'setup.py')
+    if not pkg_name and os.path.exists(setup_py):
+        pkg_name = read_setup_name(setup_py)
+
+    packages = list_packages(root, depth)
+    modules = top_level_modules(root)
+    tests = collect_tests(root)
+    notes = notable_files(root)
+
+    summary = f"Repository at {os.path.basename(root)}: {len(packages)} package(s), {len(modules)} top-level module(s), {len(tests)} test file(s)."
+
+    return {
+        'summary': summary,
+        'package_name': pkg_name,
+        'packages': packages,
+        'top_level_modules': modules,
+        'tests': tests[:20],
+        'notable_files': notes,
+    }
+
+
+def main(argv: list[str] | None = None) -> int:
+    ap = argparse.ArgumentParser(description='Summarize repository structure')
+    ap.add_argument('--workspace-root', '-w', default='.', help='Repository root')
+    ap.add_argument('--depth', '-d', type=int, default=2, help='Directory depth for package discovery')
+    ap.add_argument('--pretty', action='store_true', help='Pretty-print JSON')
+    args = ap.parse_args(argv)
+
+    out = summarize(args.workspace_root, args.depth)
+    if args.pretty:
+        print(json.dumps(out, indent=2, ensure_ascii=False))
+    else:
+        print(json.dumps(out, ensure_ascii=False))
+    return 0
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())