diff --git a/mcp/create-repo.sh b/mcp/create-repo.sh
new file mode 100755
index 0000000..a68964b
--- /dev/null
+++ b/mcp/create-repo.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# This script creates an MCP SDK repo from x/tools/internal/mcp (and friends).
+# It will be used as a one-off to create github.com/modelcontextprotocol/go-sdk.
+#
+# Requires https://github.com/newren/git-filter-repo.
+
+set -eu
+
+# Check if exactly one argument is provided
+if [ "$#" -ne 1 ]; then
+  echo "create-repo.sh: create a standalone mcp SDK repo from x/tools"
+  echo "Usage: $0 <mcp repo destination>"
+  exit 1
+fi >&2
+
+src=$(go list -m -f {{.Dir}} golang.org/x/tools)
+dest="$1"
+
+echo "Filtering MCP commits from ${src} to ${dest}..." >&2
+
+startdir=$(pwd)
+tempdir=$(mktemp -d)
+function cleanup {
+  echo "cleaning up ${tempdir}"
+  rm -rf "$tempdir"
+} >&2
+trap cleanup EXIT SIGINT
+
+echo "Checking out to ${tempdir}"
+
+git clone --bare "${src}" "${tempdir}"
+git -C "${tempdir}" --git-dir=. filter-repo \
+  --path internal/mcp/jsonschema --path-rename internal/mcp/jsonschema:jsonschema \
+  --path internal/mcp/design --path-rename internal/mcp/design:design \
+  --path internal/mcp/examples --path-rename internal/mcp/examples:examples \
+  --path internal/mcp/internal --path-rename internal/mcp/internal:internal \
+  --path internal/mcp/README.md --path-rename internal/mcp/README.md:README.md \
+  --path internal/mcp/CONTRIBUTING.md --path-rename internal/mcp/CONTRIBUTING.md:CONTRIBUTING.md \
+  --path internal/mcp --path-rename internal/mcp:mcp \
+  --path internal/jsonrpc2_v2 --path-rename internal/jsonrpc2_v2:internal/jsonrpc2 \
+  --path internal/xcontext \
+  --replace-text "${startdir}/mcp-repo-replace.txt" \
+  --force
+mkdir ${dest}
+cd "${dest}"
+git init
+
+cat << EOF > LICENSE
+MIT License
+
+Copyright (c) 2025 Go MCP SDK Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+EOF
+
+git add LICENSE && git commit -m "Initial commit: add LICENSE"
+git remote add filtered_source "${tempdir}"
+git pull filtered_source master --allow-unrelated-histories
+git remote remove filtered_source
+go mod init github.com/modelcontextprotocol/go-sdk && go get go@1.23.0
+go mod tidy
+git add go.mod go.sum
+git commit -m "all: add go.mod and go.sum file"
diff --git a/mcp/mcp-repo-replace.txt b/mcp/mcp-repo-replace.txt
new file mode 100644
index 0000000..3409dd7
--- /dev/null
+++ b/mcp/mcp-repo-replace.txt
@@ -0,0 +1,9 @@
+"github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2"==>"github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2"
+github.com/modelcontextprotocol/go-sdk/internal/xcontext==>github.com/modelcontextprotocol/go-sdk/internal/xcontext
+github.com/modelcontextprotocol/go-sdk/internal==>github.com/modelcontextprotocol/go-sdk/internal
+github.com/modelcontextprotocol/go-sdk/jsonschema==>github.com/modelcontextprotocol/go-sdk/jsonschema
+github.com/modelcontextprotocol/go-sdk/examples==>github.com/modelcontextprotocol/go-sdk/examples
+github.com/modelcontextprotocol/go-sdk/design==>github.com/modelcontextprotocol/go-sdk/design
+github.com/modelcontextprotocol/go-sdk/mcp==>github.com/modelcontextprotocol/go-sdk/mcp
+governed by an MIT-style==>governed by an MIT-style
+regex:Copyright (20\d\d) The Go Authors==>Copyright \1 The Go MCP SDK Authors