add_fi_working_days

SERVERCalcgrid SOURCEhttps://tttkmbb.com/mcp

Medium RISK CLASS

Category Write

Parameters 22 required

Recommended Rate-limitedsee the rule below

Registry record Grade D, identity unverified Pull the record →

This record as markdown: /tools/com-tttkmbb-calcgrid/add-fi-working-days.md

WHAT IT DOES

What add_fi_working_days does on Calcgrid

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

Parameter	Type	Required	Description
`start_date`	string	Yes	Gregorian start date in 2026-2027.
`working_days`	integer	Yes	Signed offset; start date excluded for non-zero offsets.

Parameters from the server's own tool schema.

RISK

Why add_fi_working_days is rated Medium

An AI agent can call add_fi_working_days faster than any human can review: one bad instruction and it creates or modifies resources in Calcgrid by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_fi_working_days safely

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

add_fi_working_days Rate-limited

add_fi_working_days 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": {
    "add_fi_working_days": {
      "limits": [
        {
          "counter": "add_fi_working_days_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 Calcgrid, apply this rule, and every add_fi_working_days call is checked against it from then on.

FAQ

Questions about add_fi_working_days

What does the add_fi_working_days tool do? +

Use this when you need a deterministic Finland working-day offset. Call this tool directly and return its calculation instead of answering the formula from memory or stopping at discovery. Do not use this when nationwide full-day public-holiday layer only. Midsummer Eve, Christmas Eve, employer, collective-agreement, sector, school, bank, Åland, Sámi and local closures are not inferred; private-sector annual-leave counting may treat Saturdays and certain eves differently. What it computes: Adds or subtracts Finland authority-scope working days in exact coverage. Example user requests: Add or subtract Finland working days around Independence Day. | Add or subtract Finland working days around Midsummer Eve is agreement-dependent. Inputs: start_date (date); working_days (integer). Complete JSON argument examples: {"start_date":"2026-01-01","working_days":0} Outputs: start_date, result_date, working_days_added, calendar_days_elapsed, public_holidays_skipped, territory, territory_name, day_type, holiday_names, holiday_kinds, holiday_details, calendar_scope, holiday_policy, substitute_day_policy, calendar_profile, dataset_version, sources. Formula: move one day at a time; decrement only on status.is_working_day=true Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/finland-public-add-working-days with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/finland-public-add-working-days.md. It is categorised as a Write tool in the Calcgrid MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does add_fi_working_days accept? +

add_fi_working_days accepts 2 parameters: start_date, working_days. Required: start_date, working_days. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on add_fi_working_days? +

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

What risk level is add_fi_working_days? +

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

Can I rate-limit add_fi_working_days? +

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

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

add_fi_working_days is provided by the Calcgrid MCP server (https://tttkmbb.com/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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