CasitaTax
REMOTE · CASITATAX.COM
Spanish non-resident tax on a home in Spain: Modelo 210 estimate, deadlines, town cadastral data
Available components
Last scanned (7 hours ago)
Scores higher than 57% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Finance and Payments
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 Security74
- 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
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- 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 Usability58
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1180 tokens (~393/item across 3 items; 3 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 Management20
- Stability observed for 6 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 3 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a current MCP spec version (2026-07-28).Pass
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.
- 5 Nov 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.
- 3 Nov 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.
- 1 Nov 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.
- 31 Oct 26 0
- Stability: unverified → 0.03 ▲ functional
- 30 Oct 26 68
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 5 Nov 2026 · Probed https://casitatax.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=casitatax.com | CN=WE1,O=Google Trust Services,C=US | 29 Oct 2026 | 27 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 10a9740318a44de0edd7a134c5adad3 |
| SANs: casitatax.com, *.casitatax.com | ||||||
| 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 casitatax.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| casitatax.com. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://casitatax.com/mcp | Verified | 200 | |
| http (plaintext) | http://casitatax.com/mcp | HTTPS enforced | 301 | https://casitatax.com/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 →
estimate_modelo_210 Estimate Modelo 210 ~495
Use this when a non-resident owner of a home in Spain asks how much Modelo 210 (Spanish non-resident income tax on the property) they owe for a tax year. Works out each owner's tax on the imputed income of the days the home wasn't let and on the rent, as CasitaTax's simulator does, and returns the method, the sources and a link that opens the simulator with the same answers.
| Name | Type | Req | Description |
|---|---|---|---|
| cadastral_value | number | yes | The home's valor catastral in euros, for the tax year: on the IBI receipt (total, not just the land or the building). |
| expenses | number | – | For rented or part, owners resident in the EU or the EEA: the deductible expenses of the rented period for the whole home, in euros. Ignored for others, who are taxed on the gross rent. |
| language | string | – | Language of the CasitaTax pages linked in the answer: da, de, en, es, fr, nl, no, fi or sv. Default en. |
| occupancy | string | yes | unrented: not let during the tax year (own use, empty); rented: let all year; part: let part of the year. |
| owners | integer | – | Number of owners, 1 to 6, with equal shares. Default 1. |
| rent | number | – | For rented or part: the rent received for the whole home during the tax year, in euros, before expenses. |
| rented_days | integer | – | For occupancy part: the number of days the home was let during the tax year. |
| residence | string | yes | Where the owners live for tax purposes: eu (a country of the EU, or Iceland, Norway, Liechtenstein), uk (United Kingdom), other (anywhere else). One value for all the owners. |
| revised | string | – | Whether the town's cadastral values were revised collectively and in force since the year the rules require (town_cadastral_data tells). Default unknown: the tax is then a range. |
| shares_percent | array | – | Each owner's share of the home in percent, when the shares differ (e.g. [60, 40]); they add up to 100. Replaces owners. |
| tax_year | integer | – | Tax year (the year the income relates to). Default: the latest year whose rules are final. |
No output schema declared.
No examples provided.
modelo_210_deadlines Modelo 210 deadlines ~216
Use this when someone asks when a Spanish Modelo 210 (non-resident income tax) is due for a home in Spain: not let, let all year, let part of the year, or sold. Returns each return's filing window, the direct debit's last day, whether the window is open today, what filing late costs, and the sources (Orden HAC/623/2026 changed the windows from tax year 2026).
| Name | Type | Req | Description |
|---|---|---|---|
| language | string | – | Language of the CasitaTax pages linked in the answer: da, de, en, es, fr, nl, no, fi or sv. Default en. |
| sale_date | string | – | For sold: the day of the sale (the deed), YYYY-MM-DD. Without it, the rule is given without dates. |
| situation | string | yes | not_rented: the home wasn't let (own use, empty); rented: let all year; rented_part_of_year: let some of the year; sold: the home was sold. |
No output schema declared.
No examples provided.
town_cadastral_data Town cadastral data ~283
Use this when someone needs to know about a Spanish town's cadastral values: the year of its last general revaluation, whether that means the 1.1% or the 2% imputed-income rate for a tax year (pass the revised value to estimate_modelo_210), and its urban IBI rate on homes. From the Catastro's statistics and the Ministerio de Hacienda's open data; País Vasco and Navarra aren't covered.
| Name | Type | Req | Description |
|---|---|---|---|
| ine | string | – | The town's 5-digit INE code, instead of town and province (e.g. 29069 for Marbella). |
| language | string | – | Language of the CasitaTax pages linked in the answer: da, de, en, es, fr, nl, no, fi or sv. Default en. |
| province | string | – | The town's province (e.g. Málaga, Alicante, Illes Balears, Santa Cruz de Tenerife), or its 2-digit code. Needed with town. |
| tax_year | integer | – | Tax year (the year the income relates to). Default: the latest year whose rules are final. |
| town | string | – | The municipality's name, in Spanish or in the regional language (e.g. Marbella, Jávea or Xàbia). Not a district or an urbanisation: the town it belongs to. |
No output schema declared.
No examples provided.
How do I install the CasitaTax MCP server?
CasitaTax is a hosted endpoint at https://casitatax.com/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 · casitatax.com
claude mcp add --transport http com-casitatax-modelo-210 'https://casitatax.com/mcp'
What is the CasitaTax MCP server?
CasitaTax is an MCP server listed in the public MCP registry as com.casitatax/modelo-210. Spanish non-resident tax on a home in Spain: Modelo 210 estimate, deadlines, town cadastral data. This page covers its hosted endpoint (https://casitatax.com/mcp).
Is the CasitaTax MCP server safe to use?
CasitaTax scores 71 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 CasitaTax MCP server expose?
CasitaTax exposes 3 tools: estimate_modelo_210, modelo_210_deadlines, town_cadastral_data. Their descriptions and schemas cost roughly 994 tokens of context every time the server is loaded.
Does the CasitaTax MCP server require authentication?
No. We connected to CasitaTax without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the CasitaTax MCP server still maintained?
CasitaTax is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.