NYC Property Facts
REMOTE · NYCPROPERTYFACTS.COM
Public records for any NYC property by address or BBL: permits, violations, sales, owners.
Available components
Last scanned (4 hours ago)
Scores higher than 60% of remote servers
Reachable. Last reached 5 Nov 2026.
Category Maps and Location
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 Security80
- 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
- The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
- 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 Usability64
- AI-judged instruction clarity (excellent).Pass
- Context-footprint check failed: tool/resource definitions use about 1120 tokens (~224/item across 5 items; 5 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 Management13
- Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage97
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 91% of tool parameters carry a description.Partial
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 5 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 6 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.
- 4 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.
- 2 Nov 26 +1
- The server rewrote its instructions, which are the text every model session reads security
- Tool “get_property” rewrote its description, which is the text the model reads security
- Tool “get_sales_history” rewrote its description, which is the text the model reads security
- Tool “list_open_issues” rewrote its description, which is the text the model reads security
- Tool “lookup_property” rewrote its description, which is the text the model reads security
- Tool “search_properties” rewrote its description, which is the text the model reads security
- Schema quality: 149 → 224 ▼ functional
- Tool coverage: 71% → 91% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- Schema quality: good → excellent functional
- Server version: 0.2.0 → 1.0.0 functional
- “get_sales_history” added an optional parameter “bin” cosmetic
- “get_sales_history” added an optional parameter “borough” cosmetic
- “get_sales_history” added an optional parameter “zip” cosmetic
- “list_open_issues” added an optional parameter “bin” cosmetic
- “list_open_issues” added an optional parameter “borough” cosmetic
- “list_open_issues” added an optional parameter “zip” cosmetic
- “get_property” reworded the description of “bbl” cosmetic
- “get_property” reworded the description of “bin” cosmetic
- “get_sales_history” reworded the description of “bbl” cosmetic
- “get_sales_history” reworded the description of “limit” cosmetic
- “list_open_issues” reworded the description of “bbl” cosmetic
- “list_open_issues” reworded the description of “limit” cosmetic
- “lookup_property” reworded the description of “zip” cosmetic
- “search_properties” reworded the description of “house_number” cosmetic
- “search_properties” reworded the description of “street” cosmetic
- “search_properties” reworded the description of “zip” cosmetic
- 1 Nov 26 71
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://nycpropertyfacts.com/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=nycpropertyfacts.com | CN=YE1,O=Let's Encrypt,C=US | 31 Oct 2026 | 29 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 574ba4892232a46bd022b10422af0164973 |
| SANs: nycpropertyfacts.com | ||||||
| CN=YE1,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 5ddd70dd31f801c85c186a7a04b80afe |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of nycpropertyfacts.com. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| com. | present | 19718 | 13 | Verified |
| nycpropertyfacts.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 |
| Header | Value |
|---|---|
| strict-transport-security | max-age=63072000; includeSubDomains |
| x-content-type-options | nosniff |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://nycpropertyfacts.com/mcp | Verified | 200 | |
| http (plaintext) | http://nycpropertyfacts.com/mcp | HTTPS enforced | 301 | https://nycpropertyfacts.com:443/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 →
get_property Get a NYC property by BBL or BIN ~146
Return the full fact sheet for a tax lot by 10-digit BBL (borough-block-lot, e.g. 3030090016) or by 7-digit DOB building number (BIN). Requires "bbl" or "bin" (if both are sent, bbl is used).
| Name | Type | Req | Description |
|---|---|---|---|
| bbl | string | – | 10-digit BBL (borough-block-lot), e.g. "3030090016". Send it as text. Required unless "bin" is given. |
| bin | string | – | 7-digit DOB building number (BIN), e.g. "3070696". Send it as text. Required unless "bbl" is given. |
No output schema declared.
No examples provided.
get_sales_history Deed / sales history (ACRIS) ~219
Deeds recorded with the NYC City Register (ACRIS) for a property: date, stated price (0 = non-market transfer), grantors, grantees, and whether the deed covers several lots. Requires one of "address", "bbl" or "bin".
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | NYC street address, e.g. "98 Grattan St, Brooklyn". Units (Apt 3B), borough and ZIP are optional; a 10-digit BBL or 7-digit BIN also works. |
| bbl | string | – | 10-digit BBL (borough-block-lot), e.g. "3030090016". Send it as text. |
| bin | string | – | 7-digit DOB building number (BIN), e.g. "3070696". Send it as text. |
| borough | string | – | Optional: Manhattan, Bronx, Brooklyn, Queens or Staten Island |
| limit | integer | – | Maximum deeds returned |
| zip | string | – | Optional 5-digit ZIP, sent as text |
No output schema declared.
No examples provided.
list_open_issues List open violations, open DOB jobs and unpaid tickets ~238
List every open item for a property: DOB jobs with a permit issued but no sign-off, active DOB and ECB violations, open HPD violations, and OATH tickets with an unpaid balance or a pending hearing. Each record has status, dates, a plain-English description and its source dataset. Requires one of "address", "bbl" or "bin".
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | – | NYC street address, e.g. "98 Grattan St, Brooklyn". Units (Apt 3B), borough and ZIP are optional; a 10-digit BBL or 7-digit BIN also works. |
| bbl | string | – | 10-digit BBL (borough-block-lot), e.g. "3030090016". Send it as text. |
| bin | string | – | 7-digit DOB building number (BIN), e.g. "3070696". Send it as text. |
| borough | string | – | Optional: Manhattan, Bronx, Brooklyn, Queens or Staten Island |
| limit | integer | – | Maximum records per section |
| zip | string | – | Optional 5-digit ZIP, sent as text |
No output schema declared.
No examples provided.
lookup_property Look up a NYC property by address ~184
Resolve a free-text NYC address to its tax lot (BBL) and return the property facts: summary, owner of record, building, assessment, last priced deed and open-item counts. Returns the best match with a 0-1 confidence, a plain-English confidence_explanation, a machine-readable match_type, the HTML/Markdown/JSON URLs and up to 4 alternatives. Requires "address". Use get_property for a known BBL/BIN.
| Name | Type | Req | Description |
|---|---|---|---|
| address | string | yes | NYC street address, e.g. "98 Grattan St, Brooklyn". Units (Apt 3B), borough and ZIP are optional; a 10-digit BBL or 7-digit BIN also works. |
| borough | string | – | Optional: Manhattan, Bronx, Brooklyn, Queens or Staten Island |
| zip | string | – | Optional 5-digit ZIP, sent as text |
No output schema declared.
No examples provided.
search_properties Search NYC properties by street and/or ZIP ~174
List tax lots on a street (prefix match, e.g. "Grattan St") and/or in a ZIP code, with address, building class, units, owner of record and open-item count. Requires "street" and/or "zip"; borough and house_number only narrow the search. Paginate with limit/offset; total is the number of matches.
| Name | Type | Req | Description |
|---|---|---|---|
| borough | string | – | Optional borough name |
| house_number | string | – | Optional house number, sent as text |
| limit | integer | – | – |
| offset | integer | – | – |
| street | string | – | Street name, e.g. "Grattan St" or "5th Ave". Required unless "zip" is given. |
| zip | string | – | 5-digit ZIP, sent as text. Required unless "street" is given. |
No output schema declared.
No examples provided.
How do I install the NYC Property Facts MCP server?
NYC Property Facts is a hosted endpoint at https://nycpropertyfacts.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 · nycpropertyfacts.com
claude mcp add --transport http jueluddinsf-nyc-property-facts 'https://nycpropertyfacts.com/mcp'
What is the NYC Property Facts MCP server?
NYC Property Facts is an MCP server listed in the public MCP registry as io.github.jueluddinsf/nyc-property-facts. Public records for any NYC property by address or BBL: permits, violations, sales, owners. This page covers its hosted endpoint (https://nycpropertyfacts.com/mcp).
Is the NYC Property Facts MCP server safe to use?
NYC Property Facts scores 73 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 NYC Property Facts MCP server expose?
NYC Property Facts exposes 5 tools: lookup_property, get_property, list_open_issues, get_sales_history, search_properties. Their descriptions and schemas cost roughly 961 tokens of context every time the server is loaded.
Does the NYC Property Facts MCP server require authentication?
No. We connected to NYC Property Facts without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the NYC Property Facts MCP server still maintained?
NYC Property Facts 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.