# count_or_add_business_days

utilpeek: Count business days between two dates or add working days, skipping public holidays. For the holiday list use get_public_holidays. Returns the business days between two dates (mode count; both ends included by default, like NETWORKDAYS) or the date N business days after or before a date (mode add, like WORKDAY), skipping weekends (configurable) and, with a country, its public holidays; plus the holidays skipped. Input: mode, start, for count end and optional include_start / include_end, for add days, optional weekend, country and subdivision. Ranges up to 20 years; with a country, dates in 1990-2100. Bad input is a 422 (not charged). Holiday rules are modelled by a library: confirm with an official source for legal or payroll use. Typically under 0.2 s. Price: USD 0.001. Free: 10 utilpeek calls per IP per UTC day. Docs: https://tanod.dev/learn/business-days-api.html

Agent View of the PolicyLayer registry record for `count_or_add_business_days`. HTML page: https://policylayer.com/tools/dev-tanod-tanod/count-or-add-business-days

## Facts

- Tool: `count_or_add_business_days`
- Server: Tanod (`https://tanod.dev/mcp`) — https://policylayer.com/tools/dev-tanod-tanod.md
- Homepage: https://github.com/https://tanod.dev/mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 9 (2 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `end` | object | no | count only: end date, YYYY-MM-DD, at most 20 years from start (before start gives a negative count). |
| `days` | object | no | add only: business days to add (negative subtracts). The start date is never counted (like Excel WORKDAY); 0 returns start. |
| `mode` | string | yes | count: business days between start and end; add: the date `days` business days after (or before) start. |
| `start` | string | yes | Start date, YYYY-MM-DD (1900-01-01..2199-12-31). |
| `country` | object | no | Optional ISO 3166-1 alpha-2 country whose public holidays are not business days (the /v1/holidays data; dates in 1990-2100). |
| `weekend` | array | no | Weekday names that are not business days (default ["sat", "sun"]; e.g. ["fri", "sat"]; [] for none). |
| `include_end` | object | no | count only: count the end date (default true; both true is Excel NETWORKDAYS, include_end false the half-open [start, end) of numpy.busday_count). |
| `subdivision` | object | no | Optional subdivision code or name for that country (e.g. CA or California for US). |
| `include_start` | object | no | count only: count the start date (default true). |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "count_or_add_business_days",
    "arguments": {
      "mode": "<mode>",
      "start": "<start>"
    }
  }
}
```

## Why count_or_add_business_days is rated Low

Even though count_or_add_business_days only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.

## Use case

AI agents call count_or_add_business_days to retrieve information from Tanod without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Tanod:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "count_or_add_business_days": {}
  }
}
```

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## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=dev-tanod-tanod · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-tanod-tanod