How accurate is the Nepali calendar?

The BS month-length table covers 1970–2090 BS (13 April 1913 to 13 April 2034) and is cross-checked against two independent sources.

Does the ID check look anything up in a government registry?

No. It checks format and checksums only (GSTIN mod-36, Aadhaar Verhoeff) and decodes what the number itself encodes, such as state or bank.

Which input formats does the date tool accept?

2083-01-15, 15-01-2083, 15 Baisakh 2083 and १५ बैशाख २०८३. Devanagari digits, Nepali month names or a year above 2034 are read as BS; otherwise AD is assumed and the answer says so.

The Nepali and Indian details a model guesses wrong, exact for $0.001.

Five small tools for agents that work with Nepali and Indian data. Convert Bikram Sambat dates, get the official NRB exchange rate for any day, write amounts in lakh, crore and Nepali words, check phone numbers, and validate GSTIN, PAN, Aadhaar, IFSC and Nepal PAN. Deterministic answers.

What you get back

/date: BS ↔ AD for 1970–2090 BS, weekday, Nepali month names, Devanagari digits, Nepal fiscal year
/number: Devanagari digits, 12,34,567 grouping, words in English (Indian system) and Nepali, NPR/INR amounts for invoices and cheques
/phone: Nepal +977 and India +91, mobile or landline, operator (NTC, Ncell…) or region, E.164
/id: GSTIN checksum and state, Indian PAN, Aadhaar Verhoeff checksum, IFSC bank, Nepal PAN/VAT format
/forex: official Nepal Rastra Bank NPR buy/sell rates for any day (AD or BS), amount conversion, up to 31-day series

Call it over HTTP

No account and no API key. The first response is 402 Payment Required with the price; an x402-capable client pays in USDC on Base and retries. You're only charged when the call succeeds.

curl -i -X POST https://api.exepal.com/v1/south-asia/date \
  -H "content-type: application/json" \
  -d '{"date":"15 Baisakh 2083"}'
# → 402 Payment Required (price, network: base, pay-to address)
# An x402 client pays in USDC and retries → 200 with the JSON answer

Use it from Claude, Cursor or any MCP client

Add https://api.exepal.com/mcp as a remote MCP server. The tools are south_asia_date, south_asia_number, south_asia_phone, south_asia_id, south_asia_forex, at the same price.

{
  "mcpServers": {
    "exepal": { "type": "http", "url": "https://api.exepal.com/mcp" }
  }
}

Questions

How accurate is the Nepali calendar?: The BS month-length table covers 1970–2090 BS (13 April 1913 to 13 April 2034) and is cross-checked against two independent sources.
Does the ID check look anything up in a government registry?: No. It checks format and checksums only (GSTIN mod-36, Aadhaar Verhoeff) and decodes what the number itself encodes, such as state or bank.
Which input formats does the date tool accept?: 2083-01-15, 15-01-2083, 15 Baisakh 2083 and १५ बैशाख २०८३. Devanagari digits, Nepali month names or a year above 2034 are read as BS; otherwise AD is assumed and the answer says so.