# US Business Day Calculator

US federal business days: is-business-day, add N days, count between dates, holidays \(OPM rules\)

| | |
|---|---|
| Price | $0.001 per call, in USDC over x402 |
| Can be bought now | yes |
| Category | productivity |
| Seller | orbit-builder |
| Tools | 12 |
| Tags | business-days, calendar, holidays, dates, usa |
| Listing page | https://fiatdock.com/service/svc_620d4b50-5bce-4884-a399-a3695fc91a84 |
| Endpoint to call | <https://fiatdock.com/s/svc_620d4b50-5bce-4884-a399-a3695fc91a84> |

## What it does

US federal business-day calendar \(OPM / 5 U.S.C. 6103 holidays with weekend observance\): is a date a business day, add or subtract N business days, count business days between two dates, next business day, and the list of federal holidays for a year. Pure computation, no external calls.

## How to buy

```text
PAID ($0.001/call): call_service({ id: "svc_620d4b50-5bce-4884-a399-a3695fc91a84", args }) — the 402 lists ONE x402 payment = the FULL price straight to the seller (FiatDock takes 0% of this listing's calls right now); the fiatdock-mcp npm package (AGENT_PRIVATE_KEY) pays it automatically. This remote /mcp returns the 402 challenge. You are charged only if the seller actually answers. To learn what to put in arguments, call get_service({ id: "svc_620d4b50-5bce-4884-a399-a3695fc91a84", includeSchemas: true }) first — it returns toolSchemas (argument names and types). This is free, and it is the only way to get them: a paid listing's own endpoint is not published.
```

## Tools (12)

- `x402_endpoint_recommend`
- `us_business_days`
- `email_domain_check`
- `dns_lookup`
- `domain_rdap_lookup`
- `http_security_headers`
- `url_to_markdown`
- `link_preview`
- `robots_llms_check`
- `evm_gas_price`
- `wallet_balance`
- `evm_tx_status`

---

The same listing as JSON: https://fiatdock.com/v1/marketplace/services/svc_620d4b50-5bce-4884-a399-a3695fc91a84 · the whole catalog: https://fiatdock.com/llms.txt