MCP Server
Zaleso
com.zaleso/tools
What this MCP does
Provides Nigerian tax, payroll, VAT, and currency calculations alongside invoice, JSON, Base64, QR-code, and password utilities.
Capabilities
Tools
10
tools
amount_in_words
Amount in words
Spell a monetary amount in words, the way a cheque or an invoice requires — "Four Thousand and Fifty Naira and Seventy-Five Kobo Only". Supports NGN, USD, EUR and GBP with the correct major and minor unit names. It is the row that goes above the signature line on the invoices at https://zaleso.com/invoice
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['amount'], 'properties': {'amount': {'type': 'number', 'description': 'The amount, e.g. 4050.75'}, 'currency': {'enum': ['NGN', 'USD', 'EUR', 'GBP'], 'type': 'string', 'description': 'Default NGN'}}}
base64_convert
Base64 encode or decode
Encode text to Base64, or decode Base64 back to text. UTF-8 throughout, so accented text, emoji, Arabic, Devanagari and CJK survive the round trip — the naive btoa/atob version does not. Interactive version: https://zaleso.com/base64
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['text'], 'properties': {'mode': {'enum': ['encode', 'decode'], 'type': 'string', 'description': 'Default encode'}, 'text': {'type': 'string', 'description': 'The text to encode, or the Base64 to decode.'}}}
invoice_totals
Invoice totals (any currency)
Compute invoice totals from line items: per-line totals, subtotal, an optional discount, optional tax (the verified Nigeria VAT preset or any rate you name), a deposit already paid, and the balance due. Country-agnostic. The interactive version also produces the PDF: https://zaleso.com/invoice
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['lines'], 'properties': {'vat': {'type': 'boolean', 'description': 'Charge the verified Nigeria VAT rate. Only when the seller is VAT-registered in Nigeria. Default false.'}, 'lines': {'type': 'array', 'items': {'type': 'object', 'required': ['description', 'quantity', 'unitPrice'], 'properties': {'quantity': {'type': 'number'}, 'unitPrice': {'type': 'number'}, 'description': {'type': 'string'}}}, 'maxItems': 20, 'description': 'Line items, up to 20.'}, 'deposit': {'type': 'number', 'description': 'Amount already paid.'}, 'taxRate': {'type': 'number', 'description': 'Tax rate as a percentage (20 for 20%), for jurisdictions other than Nigeria. Takes precedence over vat.'}, 'currency': {'enum': ['NGN', 'USD', 'EUR', 'GBP'], 'type': 'string', 'description': 'Default NGN. Affects formatting only.'}, 'taxLabel': {'type': 'string', 'description': 'Label for the tax row, e.g. "GST". Default "Tax".'}, 'discountAmount': {'type': 'number', 'description': 'Discount as a flat amount.'}, 'discountPercent': {'type': 'number', 'description': 'Discount as a percentage, 0-100.'}}}
json_format
Format or minify JSON
Format (pretty-print) or minify JSON. Invalid input returns the line and column of the error. Interactive version: https://zaleso.com/json
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['json'], 'properties': {'json': {'type': 'string', 'description': 'The JSON text'}, 'mode': {'enum': ['format', 'minify'], 'type': 'string', 'description': 'Default format'}, 'indent': {'type': 'integer', 'maximum': 8, 'minimum': 1, 'description': 'Spaces; default 2'}}}
ng_gross_for_take_home
Nigeria gross-up (salary for a target take-home)
Work backwards from a target take-home to the gross salary that produces it, under the Nigeria Tax Act 2025 (2026 tax year). This is the question employers and contractors actually ask — "what must I pay for them to clear ₦500,000 a month" — and it cannot be answered by applying a rate, because PAYE is banded. Returns the required gross with the full band-by-band working and the statutory source. Informational only — verify with the tax authority. Interactive version: https://zaleso.com/ng/net-salary
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['takeHome'], 'properties': {'period': {'enum': ['monthly', 'annual'], 'type': 'string', 'description': 'Whether takeHome is monthly or annual. Default monthly.'}, 'takeHome': {'type': 'number', 'description': 'Target take-home (net) pay in naira, after PAYE and deductions.'}, 'includeNhf': {'type': 'boolean', 'description': 'Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false.'}, 'includePension': {'type': 'boolean', 'description': 'Deduct the 8% employee pension contribution (PRA 2014). Default true.'}, 'rentPaidAnnual': {'type': 'number', 'description': 'Annual rent actually paid, in naira. Unlocks rent relief (20% of rent, capped at ₦500,000).'}}}
ng_paye_calculate
Nigeria PAYE calculator (2026)
Calculate Nigeria PAYE income tax and net (take-home) salary under the Nigeria Tax Act 2025, effective for the 2026 tax year. Returns monthly take-home, monthly PAYE, the effective rate, and the full band-by-band working, with the statutory source and verification date. Handles pension (8%), NHF (2.5%, voluntary), rent relief (20% of rent, capped at ₦500,000), and the minimum-wage exemption. Figures are informational — verify with the tax authority. Interactive version: https://zaleso.com/ng/paye
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['grossIncome'], 'properties': {'period': {'enum': ['monthly', 'annual'], 'type': 'string', 'description': 'Whether grossIncome is monthly or annual. Default monthly.'}, 'includeNhf': {'type': 'boolean', 'description': 'Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false.'}, 'grossIncome': {'type': 'number', 'description': 'Gross salary in naira (before tax and deductions).'}, 'includePension': {'type': 'boolean', 'description': 'Deduct the 8% employee pension contribution (PRA 2014). Default true.'}, 'rentPaidAnnual': {'type': 'number', 'description': 'Annual rent actually paid, in naira. Unlocks rent relief (20% of rent, capped at ₦500,000). Relief is claim-based: omit if no rent is declared.'}, 'otherDeductionsAnnual': {'type': 'number', 'description': 'Other eligible annual deductions actually paid (NHIS, life-insurance premium), in naira.'}}}
ng_vat_calculate
Nigeria VAT (add or extract)
Add Nigerian VAT to a net amount, or extract the VAT already contained in a VAT-inclusive amount. Uses the verified statutory rate from the data layer and returns it with its source and effective date — never an assumed rate. Informational only — verify with the tax authority. Interactive version: https://zaleso.com/invoice
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['amount'], 'properties': {'mode': {'enum': ['add', 'extract'], 'type': 'string', 'description': "'add' treats amount as VAT-exclusive and adds VAT; 'extract' treats it as VAT-inclusive and backs the VAT out. Default add."}, 'year': {'type': 'integer', 'description': 'Tax year. Default 2026.'}, 'amount': {'type': 'number', 'description': 'The amount in naira.'}}}
password_generate
Generate a strong password
Generate a cryptographically secure random password (crypto.getRandomValues with rejection sampling — no modulo bias). Returns the password and its entropy. Interactive version: https://zaleso.com/password
Read only
Input schema
{'type': 'object', 'properties': {'length': {'type': 'integer', 'maximum': 128, 'minimum': 4, 'description': 'Default 20'}, 'symbols': {'type': 'boolean', 'description': 'Include !@#$ etc. Default true'}, 'excludeAmbiguous': {'type': 'boolean', 'description': 'Drop lookalikes (l, I, 1, O, 0) for passwords that get read aloud'}}}
qr_generate
Generate QR code
Generate a QR code as an SVG image from text or a URL. The code encodes the value directly — no tracking redirect, so it works forever. Interactive version: https://zaleso.com/qr
Read only
Idempotent
Input schema
{'type': 'object', 'required': ['text'], 'properties': {'text': {'type': 'string', 'description': 'Text or URL to encode (max 2953 chars)'}, 'errorCorrection': {'enum': ['L', 'M', 'Q', 'H'], 'type': 'string', 'description': 'Error correction level; H survives print damage best. Default M.'}}}
usd_ngn_convert
Convert USD and NGN at the official CBN rate
Convert between US dollars and Nigerian naira at the Central Bank of Nigeria's official NFEM rate — the volume-weighted average CBN publishes, not a parallel-market figure. Returns the converted amount with the rate, the trading date it applies to, and the CBN source. Interactive version: https://zaleso.com/ng/fx
Read only
Open world
Input schema
{'type': 'object', 'required': ['amount'], 'properties': {'from': {'enum': ['USD', 'NGN'], 'type': 'string', 'description': 'The currency the amount is in. Default USD.'}, 'amount': {'type': 'number', 'description': 'The amount to convert.'}}}
History
Recent tool changes
Added
usd_ngn_convert
Sept. 17, 2026, 12:38 p.m.
Added
base64_convert
Sept. 17, 2026, 12:38 p.m.
Added
amount_in_words
Sept. 17, 2026, 12:38 p.m.
Added
invoice_totals
Sept. 17, 2026, 12:38 p.m.
Added
ng_vat_calculate
Sept. 17, 2026, 12:38 p.m.
Added
ng_gross_for_take_home
Sept. 17, 2026, 12:38 p.m.
Added
json_format
Sept. 17, 2026, 12:38 p.m.
Added
ng_paye_calculate
Sept. 17, 2026, 12:38 p.m.
Added
password_generate
Sept. 17, 2026, 12:38 p.m.
Added
qr_generate
Sept. 17, 2026, 12:38 p.m.
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