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Add Prefix

An MCP tool from the Cloudflare API server, hosted on mcp.hjlabs.in.

Add Prefix Add a new prefix under the account. [POST /accounts/{account_id}/addressing/prefixes]

Name on the gateway: cloudflare_api__ip_address_management_prefixes_add_prefix · may change things.

Parameters

Name	Type	Description
`account_id` required	`string`	account_id parameter
`asn` required	`integer`	Autonomous System Number (ASN) the prefix will…
`cidr` required	`string`	IP Prefix in Classless Inter-Domain Routing…
`delegate_loa_creation`	`boolean`	Whether Cloudflare is allowed to generate the…
`description`	`string`	Description of the prefix.
`loa_document_id`	`string`	Identifier for the uploaded LOA document.

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": "cloudflare_api__ip_address_management_prefixes_add_prefix",
  "arguments": {
    "account_id": "…",
    "asn": 0,
    "cidr": "…"
  }
}

Or connect the Cloudflare API server directly, which lists 3,127 tools including this one:

Run in your terminal

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

Use the add prefix tool with account_id set to ….