# `sale.multifamilyfor/multifamilyfor-sale` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/sale.multifamilyfor/multifamilyfor-sale
- JSON: https://anlyon.dev/api/v1/servers/sale.multifamilyfor/multifamilyfor-sale
- Version: 1.2026.1101.0 (active)
- Publisher: sale.multifamilyfor (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Metadata from the official MCP Registry, synced 2026-11-01T23:18:18.072Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Porchlight: 2-4 unit loan limits and owner-occupant math
FHA and conforming 2-4 unit loan limits by county, plus owner-occupant house-hack math.
```

Scanned 2026-11-01T23:18:24.025Z over streamable-http.

**3 tools: 1 change things and 2 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 1 | ask |
| Only reads | read | 2 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | none |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | none |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

- **warn** Annotations that disagree with the tool in `house_hack_math` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "house_hack_math" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "run": a word for a change.
```


## Changes things (1)

Creates or changes something that can be changed back. Claude Code: ask.

### `house_hack_math`

- The description's first verb is "run": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Runs the site's 2-4 unit owner-occupant calculator: down payment, base loan, FHA upfront and annual MIP, the monthly PITI, the loan against the county limit (when state and county are given), FHA's self-sufficiency test on 3-4 units, the rent a lender can count (75% of the other units), net monthly cost after their rent, and the reserves rule for FHA, VA or conventional.
```

## Only reads (2)

Looks things up and changes nothing. Claude Code: allow.

### `get_loan_limits`

- The name "get_loan_limits" says "get": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
The current-year FHA forward and FHFA conforming loan limits for 1, 2, 3 and 4 units in one county (or parish, borough, planning region, municipio), whether FHA treats it as high-cost, the 1-unit conforming figure VA uses with entitlement in use, and the highest price that keeps an FHA base loan inside the limit at 3.5% down.
```

### `list_state_loan_limits`

- The name "list_state_loan_limits" says "list": a word for reading.

Description, as the server wrote it:

```untrusted-server-text
One state or territory's current-year FHA and conforming loan limits for 2, 3 and 4 units, county by county, with how many counties sit at the FHA floor and the highest FHA limits. Sort by name or by the FHA limit for a unit count; filter to high-cost counties; page with limit and offset.
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `multifamilyfor-sale`:

```json
{
  "permissions": {
    "allow": [
      "mcp__multifamilyfor-sale__get_loan_limits",
      "mcp__multifamilyfor-sale__list_state_loan_limits"
    ],
    "ask": [
      "mcp__multifamilyfor-sale__house_hack_math"
    ],
    "deny": []
  }
}
```

## Remote posture

What an anonymous client saw at the remote endpoint, last 2026-11-02T00:20:11.974Z, unchanged since 2026-11-02T00:20:11.974Z. No credentials were sent and no tool was called. Values are shown as the endpoint returned them. Method: https://anlyon.dev/methodology#remote-posture

| Fact | Observed |
| --- | --- |
| Reachable | `yes` |
| HTTP status of an anonymous initialize | `200` |
| tools/list served without credentials | `yes` |
| Tools that change things, listed without credentials | `1` |
| Protocol version | `2025-06-18` |
| WWW-Authenticate on 401 | `not observed` |
| resource_metadata in WWW-Authenticate | `none` |
| RFC 9728 protected resource metadata | `none` |
| Authorization servers | `none` |
| Legacy HTTP+SSE transport | `no` |
| Dynamic client registration | `not observed` |
| Client ID metadata documents | `not observed` |

- **warn** Tools that change things, listed to anyone ([unauth-remote-writes](https://anlyon.dev/methodology#unauth-remote-writes))

```untrusted-server-text
The endpoint served tools/list without credentials, and the list has 1 tool that changes things (1 write). Whether a call also works without credentials was not tested: tools are never called.

https://multifamilyfor.sale/mcp: tools/list returned 3 tools to an anonymous client, including house_hack_math (write)
```