Home / Servers / X (Twitter) API / add_user_public_key

Add Public Key

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

Add Public Key Registers a user's public key for X Chat encryption. [POST /2/users/{id}/public_keys]

Name on the gateway: x_api__add_user_public_key · may change things.

Parameters

Name	Type	Description
`id` required	`string`	Unique identifier of a User
`public_key` required	`object`	Public key registration payload.

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__add_user_public_key",
  "arguments": {
    "id": "…",
    "public_key": "…"
  }
}

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"

Use the add public key tool with id set to ….