# app.doorbase/market-data (remote · doorbase.app)

US rental market data by zip: rent, cap rates, vacancy, hazard risk, rent trends. Free, no auth.

- Trust score: 74/100 (medium)
- Change this week: +10
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `doorbase.app`: 74/100 (this document), [markdown](https://verifymcp.io/servers/app-doorbase-market-data/doorbase.md), [page](https://verifymcp.io/servers/app-doorbase-market-data/doorbase)

## Channel facts

- Endpoint: `https://doorbase.app/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `2.0.0`

## 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**: 74/100
  - 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.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 71/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 808 tokens (~134/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 40/100
  - Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 94/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 82% 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 6 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**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### How do I install the app.doorbase/market-data MCP server?

app.doorbase/market-data is a hosted endpoint at https://doorbase.app/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 app-doorbase-market-data 'https://doorbase.app/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "app-doorbase-market-data": {
      "url": "https://doorbase.app/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "app-doorbase-market-data": {
      "type": "http",
      "url": "https://doorbase.app/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.app-doorbase-market-data]
url = "https://doorbase.app/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "app-doorbase-market-data": {
      "type": "remote",
      "url": "https://doorbase.app/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add app-doorbase-market-data --url 'https://doorbase.app/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  app-doorbase-market-data:
    url: "https://doorbase.app/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "app-doorbase-market-data": {
      "Transport": "http",
      "Url": "https://doorbase.app/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add app-doorbase-market-data -t streamable-http -u 'https://doorbase.app/mcp'
```

### Other

```json
{
  "mcpServers": {
    "app-doorbase-market-data": {
      "type": "http",
      "url": "https://doorbase.app/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 74, +1)

No change was recorded against any check on this day. Stability & Change Management went from 37 to 40. That category is still filling its 30-day observation window: 11 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 73, +8)

- [security improvement] Authorization: unverified → partial
- [security] Tool “get_zip_market” rewrote its description, which is the text the model reads

### 2026-10-31 (score 65, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 64, +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.

### 2026-10-26 (score 63, +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.

### 2026-10-25 (score 62, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-24 (score 62)

First indexed and scored.

## MCP tools (6)

### `search_markets` (~239 tokens)

Search US rental markets by zip

Which US zip codes match these rental-market criteria? Filters 30,000+ US zip codes by state, cap rate, vacancy, rent, population, home value, and renter share. Returns matching zips with key investor metrics and a doorbase.app link for each. Cap rates are a modeled band; min_cap_rate matches the band's high end.

Input parameters:

- `limit` (integer)
- `max_median_home_value` (number): Maximum median home value in USD.
- `max_median_rent` (number): Maximum median monthly rent in USD.
- `max_vacancy_rate` (number): Maximum vacancy rate in percent.
- `min_cap_rate` (number): Minimum estimated cap rate in percent; matches cap_rate_high (band top) >= value.
- `min_median_rent` (number): Minimum median monthly rent in USD.
- `min_population` (number): Minimum zip population.
- `min_renter_ratio` (number): Minimum renter-occupied share in percent.
- `sort_by` (string)
- `state` (string): 2-letter US state code, e.g. GA. Omit for nationwide.

### `get_zip_market` (~96 tokens)

Get one zip code's rental market data

What does the rental market look like in this zip code? Full profile for a single US zip: rent, cap-rate band (modeled), vacancy, home value, demographics, income, employment, the county's HMDA mortgage lending conditions (purchase/refinance denial rate, median rate and loan, loan-type mix), plus the canonical doorbase.app page URL.

Input parameters:

- `zip` (string, required): 5-digit US zip code.

### `top_markets` (~94 tokens)

Top rental markets leaderboard

Which US rental markets look strongest right now? National (or single-state) leaderboard: zips with the highest estimated cap-rate bands among markets with population of 10,000+ and complete rent, vacancy, and home-value data. Cap rates are a modeled band.

Input parameters:

- `limit` (integer)
- `state` (string): Optional 2-letter US state code, e.g. GA. Omit for nationwide.

### `compare_zips` (~81 tokens)

Compare zip codes side by side

How do these zip codes compare as rental markets? Side-by-side comparison of 2-6 US zips: rent, cap-rate band (modeled), vacancy, home value, population, renter share, income, employment, with a doorbase.app link for each.

Input parameters:

- `zips` (array, required): 2-6 five-digit US zip codes.

### `hazard_risk` (~89 tokens)

Flood, wildfire, and wind risk for a zip

What flood, wildfire, and wind risk does this zip code carry? NFIP flood-insurance claims on record (count, payouts, recency, claims per 1,000 housing units), FEMA National Risk Index county scores for flood, wildfire, and wind, and recent significant storm events. Claims are history, not a forecast.

Input parameters:

- `zip` (string, required): 5-digit US zip code.

### `rent_trend` (~75 tokens)

Monthly rent trend for a zip

Which way is rent moving in this zip code? Monthly median-rent history with home values, the direction of movement, and the zip's national and state rank for 3-month rent growth. Updated monthly.

Input parameters:

- `months` (integer): History window in months.
- `zip` (string, required): 5-digit US zip code.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/app-doorbase-market-data/doorbase#diagnostics

## Score history

- 2026-11-05: 74
- 2026-11-04: 73
- 2026-11-03: 73
- 2026-11-02: 73
- 2026-11-01: 65
- 2026-10-31: 65
- 2026-10-30: 64
- 2026-10-29: 64
- 2026-10-28: 64
- 2026-10-27: 63
- 2026-10-26: 63
- 2026-10-25: 62
- 2026-10-24: 62

## Common questions

### What is the app.doorbase/market-data MCP server?

app.doorbase/market-data is an MCP server listed in the public MCP registry as app.doorbase/market-data. US rental market data by zip: rent, cap rates, vacancy, hazard risk, rent trends. Free, no auth. This page covers its hosted endpoint (https://doorbase.app/mcp).

### Is the app.doorbase/market-data MCP server safe to use?

app.doorbase/market-data scores 74 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 app.doorbase/market-data MCP server expose?

app.doorbase/market-data exposes 6 tools: search_markets, get_zip_market, top_markets, compare_zips, hazard_risk, rent_trend. Their descriptions and schemas cost roughly 674 tokens of context every time the server is loaded.

### Does the app.doorbase/market-data MCP server require authentication?

No. We connected to app.doorbase/market-data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the app.doorbase/market-data MCP server still maintained?

app.doorbase/market-data 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://doorbase.app/mcp
- Website: https://doorbase.app/
- Changelog RSS feed: https://verifymcp.io/servers/app-doorbase-market-data/doorbase.xml
- Changelog JSON feed: https://verifymcp.io/servers/app-doorbase-market-data/doorbase.json
- HTML version of this page: https://verifymcp.io/servers/app-doorbase-market-data/doorbase