create-topic

Create a subscription topic

Adds new email subscription category

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

@resend-mcp Write Risk 3/5

// WHEN AI AGENTS USE THIS TOOL

AI agents use create-topic to create or modify resources in Resend. 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 CREATE-TOPIC

Without a policy, an AI agent could call create-topic 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 Resend.

// RECOMMENDED POLICY

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

resend.yaml

tools:
  create-topic:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Resend policy for all 44 tools.

// DETAILS

Tool Name create-topic

Category Write

MCP Server Resend MCP Server

Risk Level Medium

// MORE RESEND TOOLS

Destructive cancel-email Destructive remove-api-key Destructive remove-broadcast Destructive remove-contact Destructive remove-segment Destructive remove-topic Write create-api-key Write create-broadcast

View all 44 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like create-topic 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 create-topic tool do? +

Create a subscription topic. It is categorised as a Write tool in the Resend MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create-topic? +

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

What risk level is create-topic? +

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

Can I rate-limit create-topic? +

Yes. Add a rate_limit block to the create-topic 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 create-topic completely? +

Set action: deny in the Intercept policy for create-topic. 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 create-topic? +

create-topic is provided by the Resend MCP server (@resend-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

create-topic

Enforce policies on Resend