# Grove Hopper Property Tax Check (remote · www.grovehopper.com)

Check any US address for property tax over-assessment: value, appeal deadline, exemptions. No login.

- Trust score: 68/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `www.grovehopper.com`: 68/100 (this document), [markdown](https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www.md), [page](https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www)

## Channel facts

- Endpoint: `https://www.grovehopper.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 37/100
  - 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1592 tokens (~265/item across 6 items; 5 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### How do I install the Grove Hopper Property Tax Check MCP server?

Grove Hopper Property Tax Check is a hosted endpoint at https://www.grovehopper.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.

### Claude

```bash
claude mcp add --transport http com-grovehopper-www-property-tax-appeal 'https://www.grovehopper.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-grovehopper-www-property-tax-appeal": {
      "url": "https://www.grovehopper.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-grovehopper-www-property-tax-appeal": {
      "type": "http",
      "url": "https://www.grovehopper.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-grovehopper-www-property-tax-appeal]
url = "https://www.grovehopper.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-grovehopper-www-property-tax-appeal": {
      "type": "remote",
      "url": "https://www.grovehopper.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-grovehopper-www-property-tax-appeal --url 'https://www.grovehopper.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-grovehopper-www-property-tax-appeal:
    url: "https://www.grovehopper.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-grovehopper-www-property-tax-appeal": {
      "Transport": "http",
      "Url": "https://www.grovehopper.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-grovehopper-www-property-tax-appeal -t streamable-http -u 'https://www.grovehopper.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-grovehopper-www-property-tax-appeal": {
      "type": "http",
      "url": "https://www.grovehopper.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 68, +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.

### 2026-11-04 (score 67, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-11-03 (score 67)

First indexed and scored.

## MCP tools (5)

### `check_property_tax_assessment` (~263 tokens)

Check my property tax assessment

Use this when someone asks "is my property tax too high", "is my home over-assessed", "what is my home assessed at", or wants to know if they can appeal the property tax assessment on a specific US address. Works for any US address. Takes a full street address, confirms the property and county, and returns the assessed value with its tax year and source link (read from the official county record where we connect to it directly, otherwise found by a live search of county and public record pages, and it says which), an estimated annual tax bill with the rate used, what a 10% lower value would save, the appeal deadline with days left, who hears the appeal and how to file, and a result card with a button to the free Grove Hopper report (comparable sales and assessments, strongest appeal angle, unclaimed exemptions). Can take up to about 25 seconds for addresses that need the live search. Do not use for general questions with no address (use answer_property_tax_question) or for non-US properties. Read-only; nothing is filed or submitted.

Input parameters:

- `address` (string, required): Full US street address with city and state, for example "745 N 24th St, Philadelphia, PA 19130".

### `get_property_tax_appeal_deadline` (~312 tokens)

Property tax appeal deadline and where to file

Use this when someone asks for the "property tax appeal deadline", "when is the last day to appeal my property tax assessment", or where and how to file a property tax appeal. Works for any US address or county. Give a street address, or a county and state. Returns the exact deadline date with days left, the board or office that hears the appeal, the filing method, form and steps, and source links. Where a county sets deadlines per township or town (for example in Illinois, New York, New Jersey, Massachusetts and Michigan), a street address returns the date for that parcel's township or town. Where the deadline runs from the date on the assessment notice (for example in Texas, Florida, Georgia and Washington), it returns the rule and computes the exact day when given the notice date. Can take up to about 25 seconds for counties that need the live search. Do not use for exemption applications (use find_property_tax_exemptions). Read-only.

Input parameters:

- `address` (string): Street address with city and state. Optional if county and state are given. Needed to resolve a township or town.
- `county` (string): County name, for example "Cook County". Optional if an address is given.
- `noticeDate` (string): Mailing date printed on the assessment notice, as YYYY-MM-DD, for places where the deadline runs from the notice date.
- `state` (string): US state name or two-letter code, for example "IL".

### `find_property_tax_exemptions` (~232 tokens)

Find property tax exemptions

Use this when someone asks about "property tax exemptions for seniors", veteran or disabled-veteran property tax exemptions, disability exemptions, a homestead exemption, or a senior property tax freeze. Works for any US state and county. Takes a state, optionally a county, and the situation (senior, veteran, disabled, homestead). Returns each program with what it does, who qualifies, how and by when to apply, and source links, from Grove Hopper county research, our 50-state roundups and a live search of official pages where needed. Do not use for appealing an assessment (use get_property_tax_appeal_deadline). Can take up to about 25 seconds when the live search is needed. Read-only.

Input parameters:

- `county` (string): County name if known, for example "Broward County".
- `situation` (string): One of: senior, veteran, disabled, homestead. Free text is fine, for example "65 and retired".
- `state` (string, required): US state name or two-letter code, for example "Florida" or "FL".

### `calculate_property_tax` (~451 tokens)

Property tax bill and what-if calculator

Use this when someone wants to estimate a property tax bill ("how much is my property tax"), see what a home improvement would add ("does a deck raise property taxes, and by how much"), or see what a successful appeal would save per year. Works for any US address, county or state. Give the assessed value from the tax bill or notice, or a street address and the assessed value is looked up. For the tax rate give any one of: the current annual tax bill, a rate in percent, a millage rate, or just the state and county (or an address) and the typical local effective rate is used and labeled as an estimate. Scenarios: estimate_bill, improvement (add improvementCost or addedAssessedValue), appeal (add newAssessedValue or reductionPercent). The formula and rate source are shown. Read-only.

Input parameters:

- `addedAssessedValue` (number): Added assessed value from the improvement, if known.
- `address` (string): Full US street address. Used to look up the assessed value and the local rate when they are not given.
- `annualTaxBill` (number): Current annual property tax bill in dollars; used to derive the effective rate.
- `assessedValue` (number): Assessed value in dollars as shown on the tax bill or notice (not necessarily market value). Optional when an address is given.
- `county` (string): County name. Used with the state for the typical local rate.
- `improvementCost` (number): Cost of the home improvement in dollars (treated as a ceiling on added assessed value).
- `millRate` (number): Millage rate in mills per $1,000, for example 18.
- `newAssessedValue` (number): Target assessed value after a successful appeal.
- `reductionPercent` (number): Percent reduction in assessed value after a successful appeal.
- `scenario` (string): Which calculation to run. Defaults to the one implied by the other fields.
- `state` (string): US state name or two-letter code. Used for the typical local rate when no rate is given.
- `taxRatePercent` (number): Tax rate in percent, for example 1.8.

### `answer_property_tax_question` (~193 tokens)

Answer a property tax question

Use this for any general property tax question that is not about one specific address: "how do I appeal my property tax assessment", "does a deck raise property taxes", "does finishing a basement or a kitchen remodel increase property taxes", how assessments and exemptions work, what evidence wins an appeal. Applies to any US state. Returns sourced answers from Grove Hopper county and state guides and research posts, with links, and points the person to the free check for their own address. Optionally pass a state and county to prefer local guide answers. Do not use when the person gives an address and wants it checked (use check_property_tax_assessment). Read-only.

Input parameters:

- `county` (string): County name, if the question is local.
- `question` (string, required): The property tax question in the user's own words.
- `state` (string): US state name or two-letter code, if the question is local.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www#diagnostics

## Score history

- 2026-11-05: 68
- 2026-11-04: 67
- 2026-11-03: 67

## Common questions

### What is the Grove Hopper Property Tax Check MCP server?

Grove Hopper Property Tax Check is an MCP server listed in the public MCP registry as com.grovehopper.www/property-tax-appeal. Check any US address for property tax over-assessment: value, appeal deadline, exemptions. No login. This page covers its hosted endpoint (https://www.grovehopper.com/mcp).

### Is the Grove Hopper Property Tax Check MCP server safe to use?

Grove Hopper Property Tax Check scores 68 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 Grove Hopper Property Tax Check MCP server expose?

Grove Hopper Property Tax Check exposes 5 tools: check_property_tax_assessment, get_property_tax_appeal_deadline, find_property_tax_exemptions, calculate_property_tax, answer_property_tax_question. Their descriptions and schemas cost roughly 1,451 tokens of context every time the server is loaded.

### Does the Grove Hopper Property Tax Check MCP server require authentication?

No. We connected to Grove Hopper Property Tax Check without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Grove Hopper Property Tax Check MCP server still maintained?

Grove Hopper Property Tax Check 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.

## Links

- Remote endpoint: https://www.grovehopper.com/mcp
- Website: https://www.grovehopper.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www.json
- HTML version of this page: https://verifymcp.io/servers/com-grovehopper-www-property-tax-appeal/www