Skip to main content
Glama
tresor4k

macalc

calculate_loan_to_value

Compute your loan-to-value (LTV) ratio to assess mortgage risk and determine if private mortgage insurance (PMI) is required. Enter loan amount and property value to get LTV percentage, risk level, and PMI indication.

Instructions

Compute Loan-to-Value (LTV) ratio for mortgage risk. Use for mortgage application or PMI thresholds. Inputs: loan amount, property value. Returns LTV %, risk level, PMI required y/n. See list_bundles for related 'immobilier' calculators.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
property_valueYesProperty value EUR
loan_amountYesLoan amount EUR

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultNoComputed result. Object whose fields depend on the tool (e.g. {tax, marginal_rate, brackets} for tax tools, {volume_l, gallons} for volume tools).
formulaNoHuman-readable formula or method used (e.g. "I=P·r·t", "Magnus formula").
sourceNoAuthoritative source for the rule or formula (e.g. "Article 197 CGI", "NF DTU 21").
reference_urlNoLink to a calcul2 page documenting the calculation in detail.
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations exist, so description carries full burden. It discloses return values (LTV %, risk level, PMI required y/n) and implies a safe, non-destructive operation. Could mention confidentiality of inputs, but not critical for a calculator.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Two concise sentences, front-loaded with purpose, no superfluous words. Efficiently communicates purpose, usage, inputs, outputs, and related tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite output schema existing, description still explains return values. Covers all essential aspects: purpose, when-to-use, inputs, outputs, and pointer to related tools. Fully adequate for agent understanding.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, and description adds context by naming inputs (loan amount, property value) with units (EUR). Does not repeat schema but reinforces meaning.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

Description clearly states it computes LTV ratio for mortgage risk, with specific use cases (mortgage application, PMI thresholds). Distinguishes from siblings by referencing list_bundles for related calculators.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

Explicitly says when to use (mortgage application or PMI thresholds) and points to list_bundles for alternative 'immobilier' calculators, providing clear guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/tresor4k/macalc-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server