MCP servers › properties.hercules › property-data

MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23

properties.hercules/property-data

NYC and US property records: owners, LLC officers, mortgages, pre-foreclosures and investors. — the publisher's description

1 of 2 record checks metRead-only · tools listed 2026-10-23Topic: data-and-databases · AI-classifiedPricing: freemium · AI-classifiedversion 1.0.0streamable HTTP28 tools

Summary

properties.hercules/property-data is a remote MCP server listed in the official MCP registry at version 1.0.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 28 tools, 3 resources and 6 prompts.

Record checks

1 of 2 record checks met · 7 do not apply

met: Registry entry is active and says how to run it
not met: Source repository link opens
not applicable: Repository is not archived
not applicable: Code pushed to the repository in the 90 days before our check
not applicable: Repository publishes a security policy (SECURITY.md)
not applicable: Package names its licence with a standard (SPDX) identifier
not applicable: The version the registry lists can be installed and is not withdrawn
not applicable: npm package carries build provenance (attestation)
not applicable: No known critical or high advisory in the package or its dependencies

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

From public records, not a safety rating. Each check with its reason · Is it safe to install?

Key facts

Runs: remote (hosted by the publisher)
Transport: streamable HTTP
Sign-in: none needed to open a session
Tools: 28
Described as changing data: 13 of 28 toolsAI-classified
Mainly works on: accounts and data in outside web services; money, payments or tradingAI-classified
Topic: data-and-databasesAI-classified
Pricing: freemiumAI-classified
Last tested: 2026-10-23

Add to your client

Worth knowing before you connect it

13 tools are described as changing something (buy_credits, run_nyc_preforeclosure_search, get_nyc_preforeclosure_detail, …): our AI model's reading of the descriptions, not something we tested, and the server opened a session without any credential. We did not call them.

Each line comes from a section below, with its source and date.

How fresh this is

Live-tested: yes, a real session (not a text-only review)
Last tested: 2026-10-23
Mode: read-only (no tool calls)
Latest version: 1.0.0, published 2026-10-06 (registry, as of the 2026-10-23 snapshot)
First listed version: 2026-10-06 (earliest version still in the registry; older removed versions would be earlier)
Registry data: snapshot 2026-10-23
Package and repository: checked 2026-10-23
Engine: mcp-runtime-engine@0.1.0 · sdk@1.32.0

Changes since the last refresh

New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 1.0.0 (published 2026-10-06).

Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.

What it is

What does this server offer?

Observed inventory

28tools

3resources

6prompts

What it mainly works on, as our AI model read its tool descriptions: accounts and data in outside web services; money, payments or trading.

13 of 28 tools are described as changing something (creating, editing, deleting, sending or running).

get_hercules_overviewreads or searches
“Free, no sign-in.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
buy_creditson 20 other serversmoves moneydescribed as changing data
“Buy a credit pack with a machine payment (Stripe MPP: card through a shared payment token, or stablecoin).”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
2 inputs, 1 required
- packstringrequired“Which pack to buy: starter_80 (80 credits, $9.99), pack_200 (200 credits, $24.99), pack_550 (550 credits, $59.99), pack_1500 (1500 credits, $149.99).”
- methodstring“How to pay: card (Stripe Link shared payment token, the default) or stablecoin (USDC on Tempo).”
get_credit_balanceon 21 other serversreads or searches
“Shows the credit balance of the user's workspace, credits spent today, and recent charges.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
Takes no inputs.
search_nyc_preforeclosuresreads or searches
“Searches NYC properties in preforeclosure only: lis pendens foreclosure filings in Manhattan, Brooklyn, Queens, the Bronx and Staten Island.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes
9 inputs
- borougharray“NYC boroughs to include.”
- stagearray“Foreclosure stages to include.”
- equityarray“Estimated equity: positive (value above the debt) or negative, known for 1-3 family homes only.”
- filingAgearray“Case age by filing year: fresh (under 2 years), seasoned (2 to 5), long_running (5 or more).”
- addedWithinDaysinteger or null“Only filings added in the last N days.”
- amountOwedMinnumber or null
- amountOwedMaxnumber or null
- limitinteger“Rows to return, 1 to 25.”
- offsetinteger“Rows to skip, for the next page.”
run_nyc_preforeclosure_searchruns code or commandsdescribed as changing data
“Spends credits.”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
1 input, 1 required
- quote_idstringrequired“The quote.quoteId from search_nyc_preforeclosures.”
get_nyc_preforeclosure_detailreads or searchesdescribed as changing data
“Spends 1 credit, unless this workspace already pulled the record, then free.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- idstringrequired“The id of a row from search_nyc_preforeclosures.”
quote_national_property_searchreads or searches
“Quotes a search of national property data: any US property, including NYC properties that are not in preforeclosure.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes
21 inputs, 1 required
- statestringrequired“Two-letter state code, e.g.”
- citystring or null“City name.”
- zipstring or null“Five-digit zip code.”
- countystring or null“County name, without the word County.”
- propertyTypestring or null“SFR single family, MFR multifamily, CONDO, LAND, MOBILE or OTHER.”
- flagsarray“Only properties with all of these: pre_foreclosure, foreclosure, auction, reo (bank-owned), vacant, absentee_owner, high_equity, free_clear (no mortgage), inhe…”
- bedsMininteger or null
- bathsMininteger or null
- valueMinnumber or null
- valueMaxnumber or null
- equityPercentMininteger or null“Minimum estimated equity, in percent.”
- yearBuiltMininteger or null
- yearBuiltMaxinteger or null
- corporateOwnedboolean“Only properties owned by a company or LLC.”
- outOfStateOwnerboolean“Only owners whose mailing address is in another state.”
- cashBuyerboolean“Only properties bought with cash.”
- ownerPropertiesMininteger or null“Only owners who own at least this many properties.”
- lastSoldAfterstring or null“Last sale on or after this date.”
- lastSoldBeforestring or null“Last sale on or before this date.”
- offsetinteger“Skip this many matches.”
- limitinteger or null“Records to price in this batch (max 250).”
run_national_property_searchdescribed as changing data
“Returns the property records from a quote made by quote_national_property_search.”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
1 input, 1 required
- quote_idstringrequired“The quoteId returned by quote_national_property_search.”
get_property_detailon 1 other serverreads or searchesdescribed as changing data
“Spends 2 credits, unless this workspace pulled the same property in the last 7 days, then free.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- property_idstringrequired“A property id from a national search result, e.g.”
quote_active_investor_searchreads or searches
“Finds who is actively buying in an area: properties in a zip, city or county owned by investors, grouped by owner when run.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes
13 inputs, 1 required
- statestringrequired“Two-letter state code, e.g.”
- citystring or null“City name.”
- zipstring or null“Five-digit zip code.”
- countystring or null“County name, without the word County.”
- minPurchasesLast12Monthsinteger or null“Only owners who bought at least this many properties in the last 12 months, counted across their whole portfolio.”
- minPropertiesOwnedinteger or null“Only owners with at least this many properties.”
- boughtWithinMonthsinteger or null“Only properties in this area bought in the last N months.”
- corporateOnlyboolean“Only companies and LLCs.”
- cashInvestorOnlyboolean“Only properties bought with cash by an absentee investor.”
- outOfStateOnlyboolean“Only owners whose mailing address is in another state.”
- propertyTypestring or null“SFR single family, MFR multifamily, CONDO, LAND, MOBILE or OTHER.”
- offsetinteger“Skip this many matches.”
- limitinteger or null“Records to price in this batch (max 250).”
run_active_investor_searchdescribed as changing data
“Returns the investors and their properties from a quote made by quote_active_investor_search, grouped by owner with portfolio size and purchases in the last 12 months.”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
1 input, 1 required
- quote_idstringrequired“The quoteId returned by quote_active_investor_search.”
find_nyc_propertyreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- querystringrequired“An NYC street address.”

Show 16 more tools

get_nyc_propertyreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
1 input, 1 required
- bblstringrequired“The 10-digit NYC borough-block-lot id, e.g.”
unlock_nyc_property_reportcreates or changes datadescribed as changing data
“Spends credits: the report price from get_nyc_property (usually 1 credit).”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- bblstringrequired“The 10-digit NYC borough-block-lot id, e.g.”
unlock_nyc_owner_contactscreates or changes datadescribed as changing data
“Spends credits: the contacts price from get_nyc_property (usually 3 credits).”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
2 inputs, 1 required
- bblstringrequired“The 10-digit NYC borough-block-lot id, e.g.”
- refreshboolean“Look a stale unlocked contact up again at the normal price.”
search_nyc_ownersreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
- namestringrequired
- includeManagersboolean
get_nyc_owner_portfolioreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
- personKeystringrequired
- cursorstring or null
search_nyc_underused_propertiesreads or searches
“Lists NYC buildings with unused or vacant space: office buildings, school buildings and religious property (churches, convents, synagogues) in any of the five boroughs.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
8 inputs
- boroughstring“One NYC borough.”
- usestring“office (office buildings), school (school buildings) or religious (churches, convents, synagogues and other property of religious owners).”
- reasonstring“Keep only buildings with this signal: low_occupancy (owner reports half or less occupied), vacant_storefronts (half or more vacant), for_lease, for_sale, vacat…”
- min_building_sqftinteger“Smallest building area in square feet.”
- zipsarray“NYC ZIP codes.”
- ntasarray“2020 neighborhood codes from find_nyc_area, for example MN0801 Upper East Side-Lenox Hill-Roosevelt Island.”
- limitinteger
- offsetinteger
run_nyc_underused_searchruns code or commandsdescribed as changing data
“Spends credits.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- quote_idstringrequired“The quote.quoteId from search_nyc_underused_properties.”
search_nyc_signalsreads or searches
“Lists NYC lots that carry one or more property signals: reasons a deal can happen, such as a loan coming due, an old mortgage not refinanced, a long-time owner, an absentee or company owner, a forecl…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
8 inputs, 1 required
- signalsarrayrequired“One or more signal keys: long_hold, absentee_owner, entity_owner, portfolio_owner, just_sold, serial_buyer, serial_seller, recorded_mortgage, no_recorded_debt,…”
- matchstring“any keeps lots with at least one of the signals; all keeps lots with every one.”
- boroughsarray“Whole NYC boroughs.”
- zipsarray“NYC ZIP codes.”
- ntasarray“2020 neighborhood codes from find_nyc_area, for example BK0102 Williamsburg.”
- asset_classesarray“Building types, for example multifamily_walkup, multifamily_elevator, mixed_use, office, retail, one_two_family, condo, coop.”
- limitinteger
- offsetinteger
run_nyc_signals_searchruns code or commandsdescribed as changing data
“Spends credits.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- quote_idstringrequired“The quote.quoteId from search_nyc_signals.”
get_nyc_unitreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 1 required
- bblstringrequired“The building's 10-digit lot (BBL) from find_nyc_property.”
- unitstring“Leave out to list the building's units.”
search_nyc_propertiesreads or searches
“Free.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
4 inputs
- filtersobject“The same filters as the Hercules NYC map: assetClasses (condo, coop, one_two_family and more), sale price and dates, estValueMin and estValueMax, equityPctMin,…”
- zipsarray“NYC ZIP codes the person named.”
- boroughsarray“Whole NYC boroughs.”
- cursorstring“nextCursor from the previous page.”
quote_llc_owner_lookupreads or searches
“Use to find who is behind an LLC or company, for example the LLC that owns a property: its officers or managers, registered agent and formation details from public business records.”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world no
2 inputs, 2 required
- entityNamestringrequired“The company's registered name, as on the deed or tax record, e.g.”
- statestringrequired“Two-letter US state where the company is registered, e.g.”
run_llc_owner_lookupdescribed as changing data
“Spends credits.”
Publisher declares: read-only no · destructive no · idempotent no · open-world no
1 input, 1 required
- quote_idstringrequired“The quoteId from quote_llc_owner_lookup.”
quote_investor_firm_searchreads or searches
“Use to find real estate investor and lender firms in a state or city: hard-money lenders, private money lenders, note buyers, fix-and-flip investors, investment funds, cash home buyers and wholesaler…”
Publisher declares: read-only yes · destructive no · idempotent yes · open-world yes
4 inputs, 2 required
- investorTypestringrequired“The kind of firm: hard_money_lender (hard-money lenders), private_lender (private money lenders), note_buyer (mortgage note buyers), fix_and_flip (fix-and-flip…”
- statestringrequired“Two-letter US state, e.g.”
- citystring“City to search in.”
- maxResultsinteger“Most firms to return, 1-25.”
run_investor_firm_searchdescribed as changing data
“Spends credits.”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
1 input, 1 required
- quote_idstringrequired“The quoteId from quote_investor_firm_search.”
top_up_creditson 2 other serversmoves moneydescribed as changing data
“Buys a credit pack on the workspace's saved card, the card it already paid Hercules with.”
Publisher declares: read-only no · destructive no · idempotent no · open-world yes
1 input, 1 required
- creditsintegerrequired“How many credits to buy.”

Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.

How well are its tools described?

Features #4 and #5

How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.

Descriptions

AI reading of each description

Says what the tool does: 100% of 28 tools
Says what it returns: 93% of 28 tools
States limits, defaults or errors: 100% of 13 tools
Says when to use it: 24% of 21 tools
Items covered per tool: 3.3 of 4 on average

Counted from the listing

Parameters with a description: 83% of 92
Tools with a description: 100% of 28
Typical description length: 603 characters

The tool set

Counted from the listing

Tools: 28
Size of the list: about 32,732 tokens for an agent to load (characters ÷ 4)
Naming: 28 of 28 names use snake_case

AI reading: easy to mix up

No pair found.

The AI items cover 28 of 28 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.

How do I add it to my client?

Config from the registry entry

From the remote endpoint (Streamable HTTP)

We connected to this URL on 2026-10-23 (a read-only session: no tool was called).

Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.

Claude Desktop or claude.ai

Settings → Connectors → Add custom connector, then paste:
https://app.hercules.properties/mcp

Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "property-data": {
      "url": "https://app.hercules.properties/mcp"
    }
  }
}

VS Code · .vscode/mcp.json

{
  "servers": {
    "property-data": {
      "type": "http",
      "url": "https://app.hercules.properties/mcp"
    }
  }
}

VS Code (command line) · Bash or zsh terminal (macOS, Linux)

code --add-mcp '{"name":"property-data","type":"http","url":"https://app.hercules.properties/mcp"}'

Claude Code

claude mcp add --transport http property-data https://app.hercules.properties/mcp

Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+

npx @modelcontextprotocol/inspector@2.11.0 --server-url https://app.hercules.properties/mcp --transport http

The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.

Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.

Does the registry listing match what we found?

Feature #6

The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.

Registry says	We found	Result	Source · date
Remote endpoint app.hercules.properties/mcp	Session opened	matches	our test · 2026-10-23
No credential declared as required	Opened a session without any credential	matches	our test · 2026-10-23

Choosing

Record checks

Public records · not a safety rating

1 of 2 record checks met · 7 do not apply

Not ranked by downloads: a remote server publishes no download figure
Not ranked by stars: no public GitHub repository

MetRegistry entry is active and says how to run itActive, with a package or a remote address.
Not metSource repository link opensThe registry entry gives no repository link.
Does not applyRepository is not archivedNo public GitHub repository to read.
Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.

Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-23. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards

Common questions about properties.hercules/property-data

Answered from the data above

Is properties.hercules/property-data safe to install?

We do not rate servers as safe or unsafe. 1 of its 2 applicable record checks are met (facts from public records, each listed on this page). What the records show: 13 of its tools describe changing data (our AI model's reading of the descriptions). These are facts with their sources on this page, not a safety guarantee, and we did not run its tools.

Is properties.hercules/property-data free to use?

Its website (hercules.properties/integrations/mcp) describes a freemium pricing model. This is an AI-classified reading of the page on 2026-10-23, so check the page itself before relying on it.

Does properties.hercules/property-data need an API key or sign-in?

It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.

Has properties.hercules/property-data been security tested?

Partly. 5 of the 16 checks that apply to it were exercised. We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security verdict is published before verification.

What can properties.hercules/property-data do?

It lists 28 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search, create or change data, run code or commands and move money. We did not call any tool, so this describes the text, not the behaviour.

Can properties.hercules/property-data change or delete data?

13 of its tools say in their description that they create, edit, delete, send or run something (our AI model's reading). We did not call any tool, so we cannot say what actually happens.

Found this page useful?

Anonymous · no sign-in

A quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.

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Active servers whose topic is also “data-and-databases” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.

Compare with another server

Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.

Security testing

What did we test, and what did we leave out?

18 checks · features #1, #2

Not probed (we call no server's tools)

We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security score is given; a check we did not run is never counted as passed.

The 18 checks at a glanceour test · 2026-10-23

Inventory: exercised
Hidden instructions: exercised
Real execution: not run · our policy
Secret leak: not run · nothing to check it against
Internal addresses: not run · our policy
Unconfirmed changes: not run · our policy
Bad input: not run · our policy
Model requests: not run · nothing to check it against
Sensitive questions: not run · nothing to check it against
Folder boundary: not run · our policy
Log leaks: not run · nothing to check it against
Hidden content: exercised
Fake assistant turns: exercised
Token passthrough: not applicable
Token audience: not applicable
Sign-in redirect: not run · our policy
Consent handling: not testable from outside
Sign-in metadata: exercised

5 exercised11 not run (reason given)2 not applicable

Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 5 of the 16 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.

Exercised · 5

1Inventory
tool-listReads the declared tools, resources and prompts.exercised
2Hidden instructions
description-poisoningLooks for hidden instructions in tool descriptions.exercised
12Hidden content
audience-hidingChecks resources that hide content from the user.exercised
13Fake assistant turns
fake-assistant-turnChecks prompts that pose as the assistant's own words.exercised
18Sign-in metadata
oauth-url-schemeChecks the published sign-in metadata for unsafe URLs.exercised

Not run, with the reason · 11

3Real execution
real-executionCalls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
4Secret leak
canary-leakPlants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
5Internal addresses
ssrfChecks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
6Unconfirmed changes
write-without-confirmationChecks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
7Bad input
error-handlingSends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
8Model requests
samplingChecks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
9Sensitive questions
elicitation-sensitive-dataChecks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
10Folder boundary
root-boundaryChecks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
11Log leaks
logging-side-channelChecks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
16Sign-in redirect
open-redirectChecks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy
17Consent handling
confused-deputyChecks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside

Does not apply to this server · 2

14Token passthrough
token-passthroughChecks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable
15Token audience
token-audience-validationChecks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable

Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.

What happened during the test?

Feature #8

The steps in order, as the test record holds them.

0 msStarted a read-only session with the server's remote endpoint
2,113 msConnected after 0 redirects. No credential was sent or needed.
Read the inventory: 28 tools, 3 resources, 6 prompts.
9,418 msFinished: 5 checks exercised.

Reference

How is it classified?

18 fields

One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.

TopicAI-classified

data-and-databases

AI-classified · 2026-10-23

Pricing modelAI-classified

freemium

read from hercules.properties/integrations/mcp · 2026-10-23

“Create a free account, then sign in from Claude, ChatGPT or Cursor. New accounts get 1 report credit; plans add monthly credits.”

Programming language

does not apply

no existing GitHub repository (server declares no repository link, so there is nothing to fetch)

Hosting type

remote (hosted by the publisher)

registry · 2026-10-23

MCP capability

prompts, resources, tools

our test · 2026-10-23

Transport

streamable HTTP

registry · 2026-10-23

Required credentials

none declared

registry · no declaration is not a guarantee

Package registry

does not apply

remote-only server: no package is shipped, so there is no package registry

Freshness

0–30 days

registry updatedAt · 2026-10-23

Lifecycle status

active

registry · 2026-10-23

License class

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Integrity hash

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Signature / provenance

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Dependency advisories

does not apply

ships no package, so there are no dependencies to audit

Popularity

does not apply

remote-only server: ships no package, so there is nothing to look up in a package registry

Publisher signals

not stated

no readable GitHub owner to describe

Maintenance

does not apply

server declares no repository link, so there is nothing to fetch

Environment

the publisher's infrastructure

where it runs, from the hosting type

“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.

Cite or correct this page

Sources and corrections

Suggested citation

ProtocolProbe. “properties.hercules/property-data: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/properties.hercules/property-data

Figures are valid for the date shown. Our facts on this page are CC BY 4.0: reuse them with a link and the check date. Quoted text (the publisher’s descriptions, website quotes, tool names) is not ours to license.

As JSON: this record in the API · API documentation.

Badge for your README

[![ProtocolProbe](https://protocolprobe.com/api/v1/badge/properties.hercules/property-data)](https://protocolprobe.com/mcp/servers/properties.hercules/property-data)

It shows this server's record-check count: facts from public records, no tool called. It is not a security rating or a pass. It links here and updates after each data reload.

Something wrong, or is this yours?

If a fact here is wrong, tell us and we will re-check it. If you operate this server, you can run our checks on it yourself with the free self-test command; we call no server’s tools ourselves for anything shown here.

Write to hello@protocolprobe.com · corrections log · methodology