create_expense

Create an expense in Sanka. Preserve the source amount and currency. Set

SERVERSanka MCP Server SOURCEsankahq/sanka-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/sankahq-sanka-mcp/create-expense.md

WHAT IT DOES

What create_expense does on Sanka MCP Server

AI agents use create_expense 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.

RISK

Why create_expense is rated Medium

This tool creates a new expense record, which is a reversible write operation. While expenses may relate to financial tracking, the tool itself creates a record rather than moving money, authorizing payments, or committing financial obligations (which would be Financial category).

From the tool's definition Tool name is 'create_expense' and description states 'Create an expense in Sanka', which is a data creation operation. The incomplete description ('Set') suggests additional configuration but does not indicate destructive or financial transaction capabilities.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_expense safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Sanka MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_expense, this is the rule to start with:

create_expense Rate-limited

create_expense 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": {
    "create_expense": {
      "limits": [
        {
          "counter": "create_expense_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Sanka MCP Server, apply this rule, and every create_expense call is checked against it from then on.

FAQ

Questions about create_expense

What does the create_expense tool do? +

Create an expense in Sanka. Preserve the source amount and currency. Set. 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 create_expense? +

Register the Sanka MCP Server MCP server in PolicyLayer and add a rule for create_expense: 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 create_expense? +

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

Can I rate-limit create_expense? +

Yes. Add a rate_limit block to the create_expense 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 create_expense completely? +

Set action: deny in the PolicyLayer policy for create_expense. 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_expense? +

create_expense 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.

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