Add file persistence #9
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Why?
Making pyodide able to persist files would allow a lot of new workflows such as image manipulation or dataframe manipulation. A large file can be uploaded to the MCP server and manipulated in python. The file can later be downloaded.
What?
Add a new CLI option,
--mount-fs, activates the persistence.New MCP tools:
upload_file: Copy request content to the file in the persistence storage.upload_file_from_uri: URI content will be copied to a file in the persistent storage. Any URI supported byfetchis supported.retrieve_file: Retrieve file from its filename. Following MCP protocol, a resource link is returned.delete_file: Delete a file from the persistence storage.New MCP Resource:
How?
We mount a NODEFS emscripten file system in a temporary directory of the local file system during the run of the MCP Server. Therefore, Deno requires access to the temporary directory.