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Create a User Agent Blocking rule
An MCP tool from the Cloudflare API server, hosted on mcp.hjlabs.in.
Create a User Agent Blocking rule Creates a new User Agent Blocking rule in a zone. [POST /zones/{zone_id}/firewall/ua_rules]
Name on the gateway: cloudflare_api__user_agent_blocking_rules_create_a_user_agent_blocking_rule · may change things.
Parameters
| Name | Type | Description |
|---|---|---|
zone_id required | string | zone_id parameter |
configuration required | object | A user agent configuration. |
description | string | An informative summary of the rule. This value… |
mode required | block | challenge | whitelist | js_challenge | managed_challenge | The action to apply to a matched request. |
paused | boolean | When true, indicates that the rule is currently… |
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:
{
"name": "cloudflare_api__user_agent_blocking_rules_create_a_user_agent_blocking_rule",
"arguments": {
"zone_id": "…",
"configuration": "…",
"mode": "…"
}
}Or connect the Cloudflare API server directly, which lists 3,127 tools including this one:
claude mcp add --transport http hj-cloudflare-api https://mcp.hjlabs.in/mcp/cloudflare-api \
--header "Authorization: Bearer YOUR_API_KEY"Try asking
Use the create a user agent blocking rule tool with zone_id set to ….