update_dns_record

Update an existing DNS record

Changes DNS routing for domains

Part of the MCP Cloudflare MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

mcp-cloudflare-crunchtools Write Risk 5/5

// WHEN AI AGENTS USE THIS TOOL

AI agents use update_dns_record to create or modify resources in MCP Cloudflare. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON UPDATE_DNS_RECORD

Without a policy, an AI agent could call update_dns_record repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach MCP Cloudflare.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

mcp-cloudflare.yaml

tools:
  update_dns_record:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full MCP Cloudflare policy for all 14 tools.

// DETAILS

Tool Name update_dns_record

Category Write

MCP Server MCP Cloudflare MCP Server

Risk Level Medium

// MORE MCP CLOUDFLARE TOOLS

Destructive delete_dns_record Destructive delete_page_rule Destructive purge_cache Write create_dns_record Write create_page_rule Write update_page_rule Read Cross-platform Read get_dns_record

View all 14 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like update_dns_record have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the update_dns_record tool do? +

Update an existing DNS record. It is categorised as a Write tool in the MCP Cloudflare MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_dns_record? +

Add a rule in your Intercept YAML policy under the tools section for update_dns_record. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the MCP Cloudflare MCP server.

What risk level is update_dns_record? +

update_dns_record is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_dns_record? +

Yes. Add a rate_limit block to the update_dns_record rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block update_dns_record completely? +

Set action: deny in the Intercept policy for update_dns_record. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides update_dns_record? +

update_dns_record is provided by the MCP Cloudflare MCP server (mcp-cloudflare-crunchtools). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

update_dns_record

Enforce policies on MCP Cloudflare