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Append Chat Media Upload

An MCP tool from the X (Twitter) API server, hosted on mcp.hjlabs.in.

Append Chat Media Upload Appends media data to an XChat upload session. [POST /2/chat/media/upload/{id}/append]

Name on the gateway: x_api__chat_media_upload_append · may change things.

Parameters

NameTypeDescription
id requiredstringid parameter
conversation_id requiredstringThe XChat conversation the upload belongs to.
media requiredstringThe media segment bytes: base64-encoded in JSON bodies, raw bytes in multipart…
media_hash_key requiredstringThe media hash key returned by the initialize step.
segment_index requiredintegerThe index of this segment in the upload sequence.

How to call it

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments
{
  "name": "x_api__chat_media_upload_append",
  "arguments": {
    "id": "…",
    "conversation_id": "…",
    "media": "…",
    "media_hash_key": "…",
    "segment_index": 0
  }
}

Or connect the X (Twitter) API server directly, which lists 258 tools including this one:

Run in your terminal
claude mcp add --transport http hj-x-api https://mcp.hjlabs.in/mcp/x-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Try asking

Use the append chat media upload tool with id set to ….

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