flatin.pt — Portuguese property taxes
REMOTE · FLATIN.PT · SCANNED SEP 25
Portuguese property taxes: IMT on purchase and IMI rates for all 308 municipalities
Available components
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security80
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
- HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability70
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 689 tokens (~172/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management30
- Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
How do I install the flatin.pt — Portuguese property taxes MCP server?
flatin.pt — Portuguese property taxes is a hosted endpoint at https://flatin.pt/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · flatin.pt
claude mcp add --transport http pt-flatin-property-taxes 'https://flatin.pt/mcp'
{
"mcpServers": {
"pt-flatin-property-taxes": {
"url": "https://flatin.pt/mcp"
}
}
} {
"servers": {
"pt-flatin-property-taxes": {
"type": "http",
"url": "https://flatin.pt/mcp"
}
}
} [mcp_servers.pt-flatin-property-taxes] url = "https://flatin.pt/mcp"
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"pt-flatin-property-taxes": {
"type": "remote",
"url": "https://flatin.pt/mcp",
"enabled": true
}
}
} openclaw mcp add pt-flatin-property-taxes --url 'https://flatin.pt/mcp' --transport streamable-http
mcp_servers:
pt-flatin-property-taxes:
url: "https://flatin.pt/mcp" {
"McpServers": {
"pt-flatin-property-taxes": {
"Transport": "http",
"Url": "https://flatin.pt/mcp"
}
}
} assistant mcp add pt-flatin-property-taxes -t streamable-http -u 'https://flatin.pt/mcp'
{
"mcpServers": {
"pt-flatin-property-taxes": {
"type": "http",
"url": "https://flatin.pt/mcp"
}
}
} The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.
- 22 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.
- 20 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.
- 19 Sept 26 +2
- HSTS header: fail → pass ▲ security
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 0
- Stability: unverified → 0.03 ▲ functional
- 16 Sept 26 69
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Probed https://flatin.pt/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=flatin.pt | CN=WE1,O=Google Trust Services,C=US | 7 Sept 2026 | 6 Dec 2026 | ECDSA 256 | ECDSA-SHA256 | b4eb9e83c52917113219b93b5bfb0c9 |
| SANs: flatin.pt, *.flatin.pt | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of flatin.pt. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| pt. | present | 40155 | 13 | Verified |
| flatin.pt. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=31536000; includeSubDomains |
| content-security-policy | default-src 'self'; script-src 'none'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https://flatin.b-cdn.net; font-src 'self'; form-action 'self'; frame-ancestors 'none'; base-uri 'none'; object-src 'none' |
| x-content-type-options | nosniff |
| x-frame-options | DENY |
| referrer-policy | strict-origin-when-cross-origin |
| permissions-policy | geolocation=(), camera=(), microphone=(), payment=() |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://flatin.pt/mcp | Verified | 200 | |
| http (plaintext) | http://flatin.pt/mcp | HTTPS enforced | 301 | https://flatin.pt/mcp |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
imi_annual_cost Calculate the yearly IMI from the taxable value ~125
Yearly IMI for an urban property (prédio urbano) with a given taxable value (VPT) in one municipality, at the municipality's urban rate. VPT is the tax authority's valuation, not the purchase price: ask the user for it instead of using the price.
| Name | Type | Req | Description |
|---|---|---|---|
| municipality | string | yes | Municipality name in Portuguese (Porto, Lisboa, Vila Nova de Gaia) or its four-digit code (1312) |
| vpt | string | yes | Valor Patrimonial Tributário — the taxable value of the property in euros. Not the purchase price |
No output schema declared.
No examples provided.
imi_rate Look up the IMI rate of a municipality ~102
The yearly property tax (IMI) rate in one Portuguese municipality, by name or four-digit code. Collected from the Autoridade Tributária portal and checked line by line for all 308 municipalities. Where a municipality sets no single rate (it is set per parish), the answer says so instead of returning zero.
| Name | Type | Req | Description |
|---|---|---|---|
| municipality | string | yes | Municipality name in Portuguese (Porto, Lisboa, Vila Nova de Gaia) or its four-digit code (1312) |
No output schema declared.
No examples provided.
imt_calculate Calculate IMT and stamp duty on a home purchase ~266
What buying a home in Portugal costs on top of the price: IMT (property transfer tax), Imposto do Selo (stamp duty) and an estimate for the deed and registration. Official 2026 tables, including the reduced IMT table and the stamp duty deduction for buyers aged 35 or under. Returns amounts in cents and formatted in euros, with the source of the tables.
| Name | Type | Req | Description |
|---|---|---|---|
| buyer_is_young | boolean | – | The buyer is 35 or under on the date of the deed, is buying their first own permanent home, is not an IRS dependant and has owned no residential property in the previous three years. Applies the redu… |
| primary_home | boolean | – | The buyer's own permanent home (habitação própria e permanente). Default: true |
| territory | string | – | Mainland Portugal (continente) or the Azores and Madeira (regioes_autonomas). Default: continente |
| value | string | yes | Property price in euros, e.g. 250000 or 250000.50 |
No output schema declared.
No examples provided.
request_consultation Get the consultation form link and consent text ~90
How to put the user in touch with a licensed real estate agency in Portugal: returns the form link and the GDPR (RGPD) consent text in the user's language. The request is submitted by the person, not on their behalf.
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | The user's language: pt, en, ru, ua, de, fr, nl (uk is accepted too). Default: en |
No output schema declared.
No examples provided.
What is the flatin.pt — Portuguese property taxes MCP server?
flatin.pt — Portuguese property taxes is an MCP server listed in the public MCP registry as pt.flatin/property-taxes. Portuguese property taxes: IMT on purchase and IMI rates for all 308 municipalities. This page covers its hosted endpoint (https://flatin.pt/mcp).
Is the flatin.pt — Portuguese property taxes MCP server safe to use?
flatin.pt — Portuguese property taxes scores 75 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the flatin.pt — Portuguese property taxes MCP server expose?
flatin.pt — Portuguese property taxes exposes 4 tools: imt_calculate, imi_rate, imi_annual_cost, request_consultation. Their descriptions and schemas cost roughly 583 tokens of context every time the server is loaded.
Does the flatin.pt — Portuguese property taxes MCP server require authentication?
No. We connected to flatin.pt — Portuguese property taxes without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the flatin.pt — Portuguese property taxes MCP server still maintained?
flatin.pt — Portuguese property taxes is still listed as active in the MCP registry. We last reached this channel on 25 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.