Stackup: Fannie, Freddie and HUD multifamily loan sizing
REMOTE · MULTIFAMILY.ONLINE
Size an apartment loan under Fannie Mae, Freddie Mac and HUD published limits, side by side.
Available components
Last scanned (10 hours ago)
Scores higher than 54% 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 Usability55
- AI-judged instruction clarity (good).Pass
- Context-footprint check failed: tool/resource definitions use about 1250 tokens (~416/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 Management10
- Stability observed for 3 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 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.
- 3 Nov 26 0
- Stability: unverified → 0.03 ▲ functional
- 2 Nov 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://multifamily.online/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=multifamily.online | CN=WE1,O=Google Trust Services,C=US | 24 Oct 2026 | 22 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | d60479471f57294d0ed840da313fb062 |
| SANs: multifamily.online | ||||||
| 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 multifamily.online. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| online. | present | 30961 | 13 | Verified |
| multifamily.online. | 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://multifamily.online/mcp | Verified | 200 | |
| http (plaintext) | http://multifamily.online/mcp | HTTPS enforced | 301 | https://multifamily.online/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 →
compare_programs Size one apartment building under Fannie Mae, Freddie Mac and HUD loans ~725
Runs the multifamily.online comparison app on one 5+ unit building: for Fannie Mae DUS and Small Loans, Freddie Mac Optigo Conventional and Conventional Small, and HUD 223(f), 221(d)(4) and 223(a)(7), returns whether it fits the published limits (or why not), max loan by LTV/LTC and by DSCR, the binding limit, estimated monthly payment incl. HUD MIP, term, and warnings, ranked by max loan. SBA, bank, CMBS, bridge and DSCR loans are listed as ineligible or unpublished.
| Name | Type | Req | Description |
|---|---|---|---|
| amortization_years | integer | – | 0 = each program's maximum amortization (the default), or 25, 30 or 35 years for every program. |
| assisted_pct | number | – | Percent of units under project-based rental assistance (HAP/Section 8). 90+ gets HUD's assisted limits. |
| closing | string | – | When you need to close. |
| current_balance | number | – | Current loan balance in dollars (refinance and cash-out). |
| desired_loan | number | – | Loan amount you want, in dollars. 0 or omitted = the most each program allows. |
| fha_insured | boolean | – | Whether the current loan is already FHA-insured (needed for HUD 223(a)(7)). |
| fha_years_left | integer | – | Years left on the FHA-insured loan, for 223(a)(7). Default 25. |
| gross_rent | number | – | Gross scheduled rent per year, used only when noi is omitted. |
| hold_years | integer | – | How long you plan to keep the loan or property, in years. Drives Freddie Mac term choice and prepayment warnings. Default 10. |
| noi | number | – | Net operating income in dollars per year (projected stabilized NOI for construction). Omit and give gross_rent + operating_expenses instead to compute it. |
| operating_expenses | number | – | Operating expenses per year, used only when noi is omitted. |
| other_income | number | – | Other income per year (parking, laundry), used only when noi is omitted. |
| property_type | string | – | market_rate, or affordable (rent-restricted, e.g. LIHTC). |
| purpose | string | yes | What the loan is for. construction = new construction or substantial rehab. |
| rate_pct | number | – | Optional all-in interest rate in percent. Replaces Treasury + spread when given. |
| recourse | string | – | Whether you need a non-recourse loan. |
| rent_advantage | boolean | – | Affordable only: restricted rents sit below market rents (HUD calls this a rent advantage; it gets HUD's affordable limits). Default true. |
| spread_pct | number | – | Spread over the Treasury, in percent. Default 1.75 is the site's example, not a quote; lenders do not publish spreads. |
| stabilized | boolean | – | Whether the property is at stabilized occupancy now. |
| treasury_tenor | integer | – | Treasury tenor the rate is built on: 5, 7 or 10 years. Default 10. |
| units | integer | yes | Number of residential units (5 or more). |
| vacancy_pct | number | – | Vacancy and credit loss as a percent of rent plus other income, used only when noi is omitted. Default 5. |
| value | number | yes | Purchase price (purchase), current value (refinance or cash-out) or total development cost (construction), in dollars. |
No output schema declared.
No examples provided.
get_program_terms Published terms for a multifamily loan program ~138
Published limits for one multifamily loan program or all of them, as multifamily.online lists them: max LTV or LTC, minimum DSCR, term and amortization, prepayment, recourse, structure, HUD mortgage insurance where it applies, and the agency source document with its date and URL. Covers Fannie Mae DUS and Small Loans, Freddie Mac Optigo Conventional and Conventional Small, HUD 223(f), 221(d)(4), 223(a)(7), SBA, bank, CMBS, bridge and DSCR loans.
| Name | Type | Req | Description |
|---|---|---|---|
| program | string | – | Which program. Omit or "all" for every program. |
No output schema declared.
No examples provided.
get_treasury_yields Treasury yields and SOFR behind agency multifamily rates ~80
The latest 5-, 7- and 10-year U.S. Treasury par yields and overnight SOFR that the multifamily.online app builds its example rate on, each with its as-of date, the reading a week and a month earlier when available, freshness status and the publisher link (U.S. Treasury, New York Fed).
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server?
Stackup: Fannie, Freddie and HUD multifamily loan sizing is a hosted endpoint at https://multifamily.online/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 · multifamily.online
claude mcp add --transport http online-multifamily-multifamily-online 'https://multifamily.online/mcp'
What is the Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server?
Stackup: Fannie, Freddie and HUD multifamily loan sizing is an MCP server listed in the public MCP registry as online.multifamily/multifamily-online. Size an apartment loan under Fannie Mae, Freddie Mac and HUD published limits, side by side. This page covers its hosted endpoint (https://multifamily.online/mcp).
Is the Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server safe to use?
Stackup: Fannie, Freddie and HUD multifamily loan sizing scores 69 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 Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server expose?
Stackup: Fannie, Freddie and HUD multifamily loan sizing exposes 3 tools: compare_programs, get_program_terms, get_treasury_yields. Their descriptions and schemas cost roughly 943 tokens of context every time the server is loaded.
Does the Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server require authentication?
No. We connected to Stackup: Fannie, Freddie and HUD multifamily loan sizing without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the Stackup: Fannie, Freddie and HUD multifamily loan sizing MCP server still maintained?
Stackup: Fannie, Freddie and HUD multifamily loan sizing 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.