imt

imt is a command for Claude Code from linofcp007/advogado-pt. It costs 33 tokens per session (312 once invoked), scanned A, original, MIT.

A command-line calculator for Portugal’s property transfer tax, called IMT, and stamp duty when buying a property. It covers mainland Portugal’s 2026 estimates, including the IMT Jovem scheme for eligible young buyers.

In plain words
What is it for?
Calculate IMT, 0.8% stamp duty, and the combined total using the higher of the purchase price and taxable property value, with options for a main or secondary home and IMT Jovem.
Why use it?
It turns purchase details into an estimated tax breakdown instead of requiring manual calculations from tax tables.

Command for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the advogado-pt plugin — 2 skills, 22 commands, 2 hooks, 1 MCP server shipped together

Good fit Calculate IMT, 0.8% stamp duty, and the combined total using the higher of the purchase price and taxable property value, with options for a main or secondary home and IMT Jovem.

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Install with agentmods
npx agentmods add commands/linofcp007/advogado-pt/imt
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/linofcp007/advogado-pt

Made for: Claude Code.

Or install advogado-pt, the plugin that ships this one along with the rest of its 2 skills, 22 commands, 2 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for imt

README.md
[![agentmods](https://agentmods.dev/badge/commands/linofcp007/advogado-pt/imt.svg)](https://agentmods.dev/commands/linofcp007/advogado-pt/imt)
Your own site
<a href="https://agentmods.dev/commands/linofcp007/advogado-pt/imt"><img src="https://agentmods.dev/badge/commands/linofcp007/advogado-pt/imt.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 312 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.00312
Opus 5 $0.00016 $0.00156
Sonnet 5 $0.00007 $0.00062
Haiku 4.5 $0.00003 $0.00031

Measured 6d ago against content hash 3f413e4ead48, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

imt scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

commands/imt.md · 13 lines

What it actually says

Ativa a skill advogado-pt e calcula o IMT a partir de $ARGUMENTS usando a tool MCP calc_imt (valor = maior entre preço e VPT, tipo: hpp/secundaria, jovem: true para IMT Jovem). Se não houver MCP, usa scripts/imt.py.

Devolve regime, IMT, Imposto do Selo (0,8%) e total de impostos. Apresenta o resultado como estimativa de apoio (valores 2026, Continente).

EN: Activate the advogado-pt skill and compute the IMT from $ARGUMENTS using the calc_imt MCP tool (valor = the higher of price and VPT, tipo: hpp/secundaria, jovem: true for IMT Jovem). If no MCP is available, use scripts/imt.py. Return the regime, IMT, Stamp Duty (0.8%) and total taxes. Present the result as a supporting estimate (2026 values, mainland Portugal).

Exemplos · Examples: "quanto pago de IMT numa casa de 250 mil", "IMT on a 250k home".

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 13 lines · 33 tokens per session scan A 3f413e4ead48

Subscribe to this mod's changes

imt is a command published in the GitHub repository linofcp007/advogado-pt (0 stars, last pushed 28d ago), licensed MIT. It adds 33 tokens to every session and 312 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.