update_deal · Sanka MCP Server MCP: Risk & Policy

WHAT IT DOES

What update_deal does on Sanka MCP Server

AI agents use update_deal to create or update resources in Sanka MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Sanka MCP Server environment.

WHY IT NEEDS A POLICY

Why update_deal needs a policy

This tool creates or modifies data reversibly by updating deal records. It does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or retrieve data without side effects (Read). While updates to deals could have business impact, the modification is reversible, placing it in the Write category.

From the tool's definition Tool name 'update_deal' combined with description stating 'Update an existing deal in Sanka or a connected CRM' indicates modification of existing data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_deal Rate-limited

update_deal stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_deal": {
      "limits": [
        {
          "counter": "update_deal_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Sanka MCP Server, so you can run agents against it safely.

FAQ

Questions about update_deal

What does the update_deal tool do? +

Update an existing deal in Sanka or a connected CRM. Use. It is categorised as a Write tool in the Sanka MCP Server 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_deal? +

Register the Sanka MCP Server MCP server in PolicyLayer and add a rule for update_deal: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Sanka MCP Server. Nothing to install.

What risk level is update_deal? +

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

Can I rate-limit update_deal? +

Yes. Add a rate_limit block to the update_deal rule in your PolicyLayer 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_deal completely? +

Set action: deny in the PolicyLayer policy for update_deal. 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_deal? +

update_deal is provided by the Sanka MCP Server MCP server (sankahq/sanka-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.