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7. stageFileUploadChunk

Files & Drive

stageFileUploadChunk

Stage File Upload Chunk

Stage one chunk of an open Files upload: at most 4800 bytes, base64-encoded, with its index (0, 1, 2 ...) and its decoded byteSize.

write

Ask Claude, ChatGPT, Cursor or any AI connected to The Cloud "send the next part of the file", and it calls stageFileUploadChunk.

Example call

The MCP tools/call params, with the required arguments only.

{
  "arguments": {
    "base64": "<base64>",
    "byteSize": 1,
    "index": 1,
    "uploadId": "<uploadId>"
  },
  "name": "stageFileUploadChunk"
}

Arguments

• base64stringrequiredThe chunk's bytes as standard base64 (at most 4800 decoded bytes).
• byteSizeintegerrequiredThe chunk's decoded size in bytes.
• indexintegerrequiredThe chunk's position in the file, counting from 0.
• uploadIdstringrequiredThe upload id returned by beginFileUpload

Returns

The registry does not declare a return shape.

Declared limits

• byteSize: minimum -9007199254740991
• byteSize: maximum 9007199254740991
• index: minimum -9007199254740991
• index: maximum 9007199254740991

Ask for it

The Cloud routes these requests to this verb.

• send the next part of the file

Pair it with

The verbs that finish the job.

• beginFileUpload
• commitFileUpload

Questions

• What does stageFileUploadChunk do?

  Stage one chunk of an open Files upload: at most 4800 bytes, base64-encoded, with its index (0, 1, 2 ...) and its decoded byteSize. It is one of the tools The Cloud MCP server gives every connected AI.

• How do I use stageFileUploadChunk from Claude or ChatGPT?

  Connect your AI to The Cloud at https://mcp.thecloud.so/mcp and sign in once. Then ask Claude, ChatGPT, Cursor or any AI connected to The Cloud "send the next part of the file", and it calls stageFileUploadChunk.

• Is stageFileUploadChunk safe to let an AI call?

  stageFileUploadChunk changes your workspace. What an AI creates is Private until you share it.

Connect

One endpoint gives your AI this tool and every other one: connect Claude, ChatGPT, Cursor or Gemini, read what The Cloud is, or see pricing.