← The evidence ledger
Evidence row 564321
Observed , by probe.mcp/1.
- Kind
- mcp.tools
- About
- endpoint fce9444b-117c-498c-a84f-737f356276fd
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 599f43727d0931b028c5e83cb4c01e78b49efcdd9b8d34124d79c442e2c42158
- Leaf
- 0x5cad573ecff8430af3d2549029cecf93d27b8b53018611dbad8cefb33b068b17
What was observed
{
"count": 10,
"tools": [
{
"description": "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",
"inputSchema": {
"properties": {
"amount": {
"description": "The amount, e.g. 4050.75",
"type": "number"
},
"currency": {
"description": "Default NGN",
"enum": [
"NGN",
"USD",
"EUR",
"GBP"
],
"type": "string"
}
},
"required": [
"amount"
],
"type": "object"
},
"name": "amount_in_words"
},
{
"description": "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",
"inputSchema": {
"properties": {
"mode": {
"description": "Default encode",
"enum": [
"encode",
"decode"
],
"type": "string"
},
"text": {
"description": "The text to encode, or the Base64 to decode.",
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"name": "base64_convert"
},
{
"description": "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",
"inputSchema": {
"properties": {
"currency": {
"description": "Default NGN. Affects formatting only.",
"enum": [
"NGN",
"USD",
"EUR",
"GBP"
],
"type": "string"
},
"deposit": {
"description": "Amount already paid.",
"type": "number"
},
"discountAmount": {
"description": "Discount as a flat amount.",
"type": "number"
},
"discountPercent": {
"description": "Discount as a percentage, 0-100.",
"type": "number"
},
"lines": {
"description": "Line items, up to 20.",
"items": {
"properties": {
"description": {
"type": "string"
},
"quantity": {
"type": "number"
},
"unitPrice": {
"type": "number"
}
},
"required": [
"description",
"quantity",
"unitPrice"
],
"type": "object"
},
"maxItems": 20,
"type": "array"
},
"taxLabel": {
"description": "Label for the tax row, e.g. \"GST\". Default \"Tax\".",
"type": "string"
},
"taxRate": {
"description": "Tax rate as a percentage (20 for 20%), for jurisdictions other than Nigeria. Takes precedence over vat.",
"type": "number"
},
"vat": {
"description": "Charge the verified Nigeria VAT rate. Only when the seller is VAT-registered in Nigeria. Default false.",
"type": "boolean"
}
},
"required": [
"lines"
],
"type": "object"
},
"name": "invoice_totals"
},
{
"description": "Format (pretty-print) or minify JSON. Invalid input returns the line and column of the error. Interactive version: https://zaleso.com/json",
"inputSchema": {
"properties": {
"indent": {
"description": "Spaces; default 2",
"maximum": 8,
"minimum": 1,
"type": "integer"
},
"json": {
"description": "The JSON text",
"type": "string"
},
"mode": {
"description": "Default format",
"enum": [
"format",
"minify"
],
"type": "string"
}
},
"required": [
"json"
],
"type": "object"
},
"name": "json_format"
},
{
"description": "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",
"inputSchema": {
"properties": {
"includeNhf": {
"description": "Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false.",
"type": "boolean"
},
"includePension": {
"description": "Deduct the 8% employee pension contribution (PRA 2014). Default true.",
"type": "boolean"
},
"period": {
"description": "Whether takeHome is monthly or annual. Default monthly.",
"enum": [
"monthly",
"annual"
],
"type": "string"
},
"rentPaidAnnual": {
"description": "Annual rent actually paid, in naira. Unlocks rent relief (20% of rent, capped at ₦500,000).",
"type": "number"
},
"takeHome": {
"description": "Target take-home (net) pay in naira, after PAYE and deductions.",
"type": "number"
}
},
"required": [
"takeHome"
],
"type": "object"
},
"name": "ng_gross_for_take_home"
},
{
"description": "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",
"inputSchema": {
"properties": {
"grossIncome": {
"description": "Gross salary in naira (before tax and deductions).",
"type": "number"
},
"includeNhf": {
"description": "Deduct the 2.5% National Housing Fund contribution — voluntary for private-sector employees since 2023. Default false.",
"type": "boolean"
},
"includePension": {
"description": "Deduct the 8% employee pension contribution (PRA 2014). Default true.",
"type": "boolean"
},
"otherDeductionsAnnual": {
"description": "Other eligible annual deductions actually paid (NHIS, life-insurance premium), in naira.",
"type": "number"
},
"period": {
"description": "Whether grossIncome is monthly or annual. Default monthly.",
"enum": [
"monthly",
"annual"
],
"type": "string"
},
"rentPaidAnnual": {
"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.",
"type": "number"
}
},
"required": [
"grossIncome"
],
"type": "object"
},
"name": "ng_paye_calculate"
},
{
"description": "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",
"inputSchema": {
"properties": {
"amount": {
"description": "The amount in naira.",
"type": "number"
},
"mode": {
"description": "'add' treats amount as VAT-exclusive and adds VAT; 'extract' treats it as VAT-inclusive and backs the VAT out. Default add.",
"enum": [
"add",
"extract"
],
"type": "string"
},
"year": {
"description": "Tax year. Default 2026.",
"type": "integer"
}
},
"required": [
"amount"
],
"type": "object"
},
"name": "ng_vat_calculate"
},
{
"description": "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",
"inputSchema": {
"properties": {
"excludeAmbiguous": {
"description": "Drop lookalikes (l, I, 1, O, 0) for passwords that get read aloud",
"type": "boolean"
},
"length": {
"description": "Default 20",
"maximum": 128,
"minimum": 4,
"type": "integer"
},
"symbols": {
"description": "Include !@#$ etc. Default true",
"type": "boolean"
}
},
"type": "object"
},
"name": "password_generate"
},
{
"description": "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",
"inputSchema": {
"properties": {
"errorCorrection": {
"description": "Error correction level; H survives print damage best. Default M.",
"enum": [
"L",
"M",
"Q",
"H"
],
"type": "string"
},
"text": {
"description": "Text or URL to encode (max 2953 chars)",
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"name": "qr_generate"
},
{
"description": "Convert between Nigerian naira and US dollars, pounds, euros and other currencies at the Central Bank of Nigeria's official rate — the latest, or the rate that applied on a past date. The dollar uses the NFEM rate (the volume-weighted average CBN publishes); other currencies use CBN's selling rate. Never 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",
"inputSchema": {
"properties": {
"amount": {
"description": "The amount to convert.",
"type": "number"
},
"date": {
"description": "Use the rate that applied on this date, as YYYY-MM-DD, from 2024-12-02 onwards — e.g. an invoice date. On a weekend or public holiday the last trading day's rate applies. Default: the latest rate.",
"type": "string"
},
"from": {
"description": "The currency the amount is in. Default USD.",
"enum": [
"USD",
"GBP",
"EUR",
"CNY",
"JPY",
"CHF",
"ZAR",
"SAR",
"AED",
"DKK",
"XOF",
"NGN"
],
"type": "string"
},
"to": {
"description": "Only when from is NGN: the currency to convert to. Default USD.",
"enum": [
"USD",
"GBP",
"EUR",
"CNY",
"JPY",
"CHF",
"ZAR",
"SAR",
"AED",
"DKK",
"XOF"
],
"type": "string"
}
},
"required": [
"amount"
],
"type": "object"
},
"name": "usd_ngn_convert"
}
]
}What the leaf hashes
{"body":"599f43727d0931b028c5e83cb4c01e78b49efcdd9b8d34124d79c442e2c42158","id":564321,"kind":"mcp.tools","method":"probe.mcp/1","observed_us":1793137811738544,"prev":null,"subject":"fce9444b-117c-498c-a84f-737f356276fd","subject_kind":"endpoint"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (273461 rows).
- 0x5cad69adc77810996abfa0da5854f1d9f15375284247ca16fd5adea29f30a98b
- 0x34ef2a756c51d00c7535024e265adb1f09508dbc58547002a4b03d87a10ff494
- 0xa2419ee28e2616f29f1289afdf7be95d2ae2ef9c245ac670d416897e09b89429
- 0xa032ef54c2be15b248b890a90f978c59ecb3063fbae40eea7bdda01500ee5a0b
- 0x4552106137459f12b60a58f10529b7ba75c202f53d9a39f9a191e6a164ce8c25
- 0x65aa49087b0022a41185ece4650cb0825159c9b888b2873c241ac41c677894b7
- 0x8bc2ed40cf1d13e982fa64dee13d3d32817be659ca090a96a83848ab74034196
- 0xf438e860702f0f6165b0b85ded9672ce81aa9467723474b73f02f92160d6a669
- 0x2014e8cc97f7f04e9335ad0ca0858398011b2056e7bd968efddbdb2966619ae1
- 0x8f33185ea453cc735cce4951add71a770865f4eabe3b7ee7a9fb227ebd339223
- 0x2852744b47bc9835dedf6e89aec877e57a0e0ed97b36700cae3173aefff12cb5
- 0x548136c1e3ccb412bb6e8b0e92df8bd9db651531331fa2a46332b9c2956172f5
- 0xeaf6b21867367f85a965f982b6593c42eafe4fdf74e94b675523a6478de49a54
- 0x4277e02be0b5d91d78bc2247e37d402572474ba896c2e8f45765c8dc4e244d36
- 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
- 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
- 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
- 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
- 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699
- Day root
- 0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795
- Chained
- 0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4
- Published
- On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4