diff --git a/docs-site/requirements.txt b/docs-site/requirements.txt
new file mode 100644
index 000000000..e9079a625
--- /dev/null
+++ b/docs-site/requirements.txt
@@ -0,0 +1,5 @@
+# Pins the API reference doc generator used by scripts/generate-api-docs.sh.
+# pydoc-markdown parses the SDK source statically (no install/import of the
+# packages), pulling docspec-python transitively. Keep in sync with the version
+# installed in .github/workflows/api-docs.yml.
+pydoc-markdown==4.8.2
diff --git a/scripts/generate-api-docs.sh b/scripts/generate-api-docs.sh
new file mode 100755
index 000000000..e0b469fb4
--- /dev/null
+++ b/scripts/generate-api-docs.sh
@@ -0,0 +1,116 @@
+#!/bin/bash
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+PACKAGE="${1:?package required (core|adk|langchain|llamaindex)}"
+VERSION="${2:?version required (e.g. v1.0.0 or dev)}"
+BASE_URL="${3:-/}"
+
+# Absolute repo root: the pydoc-markdown config's search_path is resolved
+# relative to the config file's directory (a temp dir), not the CWD, so it must
+# be absolute. Captured before the later `cd docs-site`.
+ROOT="$(pwd)"
+
+# Map the URL slug to its package title and the curated list of public modules
+# to document. The list is explicit (not whole-package recursion) so internal
+# surface -- utils, itransport, the mcp_transport.v* protocol impls, and every
+# package's version module -- stays out of the page, matching the Go/JS docs.
+case "$PACKAGE" in
+  core)
+    TITLE="Core"
+    MODULES=(client sync_client tool sync_tool auth_methods protocol) ;;
+  adk)
+    TITLE="ADK"
+    MODULES=(client tool toolset credentials) ;;
+  langchain)
+    TITLE="LangChain"
+    MODULES=(client tools async_client async_tools) ;;
+  llamaindex)
+    TITLE="LlamaIndex"
+    MODULES=(client tools async_client async_tools) ;;
+  *) echo "Unknown package: $PACKAGE" >&2; exit 1 ;;
+esac
+
+DIR="packages/toolbox-${PACKAGE}"
+MODULE="toolbox_${PACKAGE}"
+
+# Per-build content tree in a temp dir, kept out of the checked-in
+# docs-site/content so concurrent package builds never trample each other.
+# The package's API reference is the home page, so /<pkg>/<version>/ lands
+# directly on the docs (the repo README lives only at the site root).
+CONTENT_DIR="$(mktemp -d)"
+CFG="$(mktemp)"
+# return 0 so a leftover non-zero never becomes the script's exit code, since an
+# EXIT trap's last status replaces it.
+cleanup() { rm -rf "$CONTENT_DIR"; rm -f "$CFG"; return 0; }
+trap cleanup EXIT
+
+# Build the YAML module block ("      - toolbox_<pkg>.<mod>" per line).
+MODULE_YAML=""
+for m in "${MODULES[@]}"; do
+  MODULE_YAML+="      - ${MODULE}.${m}"$'\n'
+done
+
+# Generate the package's API reference as a single markdown page.
+# pydoc-markdown parses the source statically (AST via docspec-python); it never
+# imports the package, so the wrappers (adk/langchain/llamaindex) document their
+# toolbox_core references as plain names without core being installed or built --
+# no dependency build step is needed for any package.
+#   filter (exclude_private, skip_empty_modules): drop _-prefixed internals and
+#     empty modules; dunders like __init__/__call__ are kept (public surface).
+#   google: parse Google-style Args:/Returns:/Raises: blocks.
+#   crossref: resolve {@link X}-style refs to in-page #anchors (no stray .md).
+#   renderer markdown -> a single _index.md, the Hugo section index for
+#     /<pkg>/<version>/. Parameters render as lists (Go-SDK style); the Raises
+#     section is kept as pydoc-markdown emits it.
+cat > "$CFG" <<YAML
+loaders:
+  - type: python
+    search_path: ["${ROOT}/${DIR}/src"]
+    modules:
+${MODULE_YAML}processors:
+  - type: filter
+    exclude_private: true
+    skip_empty_modules: true
+  - type: google
+  - type: crossref
+renderer:
+  type: markdown
+  filename: "${CONTENT_DIR}/_index.md"
+  render_toc: false
+YAML
+pydoc-markdown "$CFG"
+
+# Prepend Docsy frontmatter (type: docs + the friendly "<Title> (<version>)"
+# heading) to the generated page so Docsy renders the section index correctly.
+tmp="$(mktemp)"
+{ printf -- '---\ntitle: "%s"\ntype: docs\n---\n\n' "${TITLE} (${VERSION})"; cat "${CONTENT_DIR}/_index.md"; } > "$tmp"
+mv "$tmp" "${CONTENT_DIR}/_index.md"
+
+cd docs-site
+HUGO_PARAMS_VERSION="${VERSION}" HUGO_PARAMS_PACKAGE="${PACKAGE}" hugo \
+  --minify \
+  --contentDir "${CONTENT_DIR}" \
+  --baseURL "${BASE_URL}${PACKAGE}/${VERSION}/" \
+  --destination "public/${PACKAGE}/${VERSION}"
+
+# Hoist the home-scoped outputs from this version's dir up to the package root,
+# where the navbar version selector fetches them. They list every version of the
+# package, so they must live once per package (not per version) and are shared
+# across all of this package's version pages. keep_files on deploy preserves them.
+mv "public/${PACKAGE}/${VERSION}/releases.releases" "public/${PACKAGE}/releases.releases"
+mkdir -p "public/${PACKAGE}/latest"
+mv "public/${PACKAGE}/${VERSION}/latest.html" "public/${PACKAGE}/latest/index.html"
diff --git a/scripts/generate-root.sh b/scripts/generate-root.sh
new file mode 100755
index 000000000..dba506136
--- /dev/null
+++ b/scripts/generate-root.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+BASE_URL="${1:-/}"
+
+# Render the repo README (from the checked-out tag) as the root landing page.
+# Built only on tag pushes so the root URL tracks the latest release and stays
+# stable between main-branch dev builds.
+CONTENT_DIR="$(mktemp -d)"
+trap 'rm -rf "$CONTENT_DIR"' EXIT
+
+cat > "$CONTENT_DIR/_index.md" <<EOF
+---
+title: "MCP Toolbox Python API Reference"
+type: docs
+---
+EOF
+# Strip the README's leading H1 and its hand-maintained TOC block before
+# appending: Docsy already renders the page title as an H1 and an "On this page"
+# TOC, so leaving them in would duplicate both on the landing page.
+awk '
+  /<!-- TOC -->/ { intoc = 1 }
+  intoc { if (/<!-- \/TOC -->/) intoc = 0; next }
+  !h1done && /^# / { h1done = 1; next }
+  { print }
+' README.md >> "$CONTENT_DIR/_index.md"
+
+cd docs-site
+hugo \
+  --minify \
+  --contentDir "${CONTENT_DIR}" \
+  --baseURL "${BASE_URL}" \
+  --destination "public"