Free online tools: word count, QR codes, passwords, JSON, EMI.
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Calculates the monthly EMI (equated monthly instalment) for a loan from the principal, annual interest rate and tenure in months, plus total interest and total payment.
Loan tenure in months (1-600).
Loan amount (principal), greater than 0.
Annual interest rate in percent (0 or more).
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
Run in a terminal
claude mcp add --transport http mamatool https://mamatool.com/mcp
Calculates the monthly EMI (equated monthly instalment) for a loan from the principal, annual interest rate and tenure in months, plus total interest and total payment.
| Argument | Type | Description |
|---|---|---|
| months* | integer | Loan tenure in months (1-600). |
| principal* | number | Loan amount (principal), greater than 0. |
| annualRate* | number | Annual interest rate in percent (0 or more). |
{
"type": "object",
"required": [
"principal",
"annualRate",
"months"
],
"properties": {
"months": {
"type": "integer",
"maximum": 600,
"minimum": 1,
"description": "Loan tenure in months (1-600)."
},
"principal": {
"type": "number",
"description": "Loan amount (principal), greater than 0.",
"exclusiveMinimum": 0
},
"annualRate": {
"type": "number",
"minimum": 0,
"description": "Annual interest rate in percent (0 or more)."
}
},
"additionalProperties": false
}Counts words, characters, sentences and paragraphs in a piece of text, and estimates reading and speaking time.
| Argument | Type | Description |
|---|---|---|
| text* | string | The text to count. |
{
"type": "object",
"required": [
"text"
],
"properties": {
"text": {
"type": "string",
"maxLength": 100000,
"description": "The text to count."
}
},
"additionalProperties": false
}Validates and pretty-prints JSON text with the requested indentation. Returns a clear error message when the input is not valid JSON.
| Argument | Type | Description |
|---|---|---|
| indent | integer | Spaces per indent level (0-8). 0 gives compact JSON. |
| jsonText* | string | The JSON text to format. |
{
"type": "object",
"required": [
"jsonText"
],
"properties": {
"indent": {
"type": "integer",
"default": 2,
"maximum": 8,
"minimum": 0,
"description": "Spaces per indent level (0-8). 0 gives compact JSON."
},
"jsonText": {
"type": "string",
"maxLength": 100000,
"description": "The JSON text to format."
}
},
"additionalProperties": false
}Generates a random secure password of the requested length and character sets. Passwords are generated with cryptographic randomness and are never stored or sent anywhere.
| Argument | Type | Description |
|---|---|---|
| digits | boolean | Include digits (0-9). |
| length | integer | Password length (4-128). |
| symbols | boolean | Include symbols (!@#$%^&* etc.). |
| lowercase | boolean | Include lowercase letters (a-z). |
| uppercase | boolean | Include uppercase letters (A-Z). |
{
"type": "object",
"required": [],
"properties": {
"digits": {
"type": "boolean",
"default": true,
"description": "Include digits (0-9)."
},
"length": {
"type": "integer",
"default": 16,
"maximum": 128,
"minimum": 4,
"description": "Password length (4-128)."
},
"symbols": {
"type": "boolean",
"default": true,
"description": "Include symbols (!@#$%^&* etc.)."
},
"lowercase": {
"type": "boolean",
"default": true,
"description": "Include lowercase letters (a-z)."
},
"uppercase": {
"type": "boolean",
"default": true,
"description": "Include uppercase letters (A-Z)."
}
},
"additionalProperties": false
}Generates a QR code image (PNG) for a URL or any short text, for example a website address or Wi-Fi details.
| Argument | Type | Description |
|---|---|---|
| size | integer | Image width and height in pixels (128-1024). |
| text* | string | The URL or text to encode in the QR code. |
{
"type": "object",
"required": [
"text"
],
"properties": {
"size": {
"type": "integer",
"default": 256,
"maximum": 1024,
"minimum": 128,
"description": "Image width and height in pixels (128-1024)."
},
"text": {
"type": "string",
"maxLength": 2000,
"description": "The URL or text to encode in the QR code."
}
},
"additionalProperties": false
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 14, 2026.