Add initial MCP spec implementation

Introduce MCP spec version '2025-03-26' with GitSpec integration and JSON schema parsing.

Author: wrmsr

x/mcp/__init__.py

@@ -0,0 +1,37 @@
+"""
+https://github.com/modelcontextprotocol/modelcontextprotocol/blob/9b15ff98b87d6a6a54055f4189feb22e750d9389/schema/2025-03-26/schema.json
+"""
+import os.path
+
+from omdev.cache import data as dcache
+from omlish.formats import json
+from omlish.specs import jsonschema as jsch
+
+
+##
+
+
+MCP_SPEC_VERSION = '2025-03-26'
+
+MCP_SPEC_DATA = dcache.GitSpec(
+    'https://github.com/modelcontextprotocol/modelcontextprotocol',
+    rev='9b15ff98b87d6a6a54055f4189feb22e750d9389',
+    subtrees=[
+        f'schema/{MCP_SPEC_VERSION}/schema.json',
+    ],
+)
+
+
+def _main() -> None:
+    spec_dir = dcache.default().get(MCP_SPEC_DATA)
+
+    with open(os.path.join(spec_dir, 'schema', MCP_SPEC_VERSION, 'schema.json')) as f:
+        spec_content = json.load(f)
+
+    spec_jsch = jsch.parse_keywords(spec_content)
+
+    print(json.dumps_pretty(jsch.render_keywords(spec_jsch)))
+
+
+if __name__ == '__main__':
+    _main()