booking_cancel

SERVERServicialo SOURCE@servicialo/mcp-server

Critical RISK CLASS

Category Financial

Parameters 74 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/com-servicialo-mcp-server/booking-cancel.md

WHAT IT DOES

What booking_cancel does on Servicialo

AI agents use booking_cancel to commit financial operations through Servicialo, usually the final step of a payment, billing, or trading workflow. A call moves real money.

Parameter	Type	Required
`apiKey`	string	—
`reason`	string	Yes
`confirm`	boolean	Yes
`orgSlug`	string	Yes
`sessionId`	string	Yes
`cancelledBy`	string	—
`applyCancellationPolicy`	boolean	—

Parameters from the server's own tool schema.

RISK

Why booking_cancel is rated Critical

This tool cancels a booking and by default triggers a financial penalty transaction based on the cancellation policy. It directly commits financial obligations (penalty charges) against a party, placing it firmly in the Financial category. The irreversible nature of the financial transaction and the potential for incorrect charges (or wrongful waivers via applyCancellationPolicy:false) make the blast radius critical.

From the tool's definition 'the charge is computed from the no-charge/partial/full windows and, if the policy has autoApply, registered as a penalty transaction (money-write)'

Risk signalsHandles credentials or secrets (apiKey)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs booking_cancel safely

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

booking_cancel Approval-gated

Any call to booking_cancel is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "booking_cancel": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about booking_cancel

What does the booking_cancel tool do? +

Cancel an existing session. By default applies the org cancellation policy: the charge is computed from the no-charge/partial/full windows and, if the policy has autoApply, registered as a penalty transaction (money-write). Set applyCancellationPolicy: false to waive the charge. Requires confirm: true. It is categorised as a Financial tool in the Servicialo MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

What parameters does booking_cancel accept? +

booking_cancel accepts 7 parameters: apiKey, reason, confirm, orgSlug, sessionId, cancelledBy, applyCancellationPolicy. Required: reason, confirm, orgSlug, sessionId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on booking_cancel? +

Register the Servicialo MCP server in PolicyLayer and add a rule for booking_cancel: 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 Servicialo. Nothing to install.

What risk level is booking_cancel? +

booking_cancel is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit booking_cancel? +

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

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

booking_cancel is provided by the Servicialo MCP server (@servicialo/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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