Hercules MCP server

Which MCP servers are Hercules's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-26

← Back to Hercules

Whose server it is

Registry nameproperties.hercules/property-dataverified in the MCP registry

The registry name sits under hercules.properties. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-26

Stateanswerschecked 2026-10-26
Tools28
Server calls itselfhercules
Server version1.0.0
Protocol version2025-06-18

On 2026-10-26 the server answered initialize and tools/list without a sign-in. First answer in 377 ms.

Should an agent connect itNot proven either way yet

Whether its tools do the product's job has not been judged yet.
Checked on 3 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 3, the first on 2026-10-26

INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
Answeredmeasuring3 of the 7 daily checks it takes to print a share
Median first answer474 ms
Space in an agent's context≈ 11,163 tokensthe definitions of all its tools (28), which an agent carries on every turn
Tool definitionsA · 96 of 100
Typed results28 of 28 toolsdeclared outputSchema: results come typed, read once

Parameters without a description: in 6 of 28

What an agent can do with it

not sure · search NYC lots for pre-foreclosures and tax lien sales
not sure · pull owner of record and mortgage details for a property
not sure · receive weekly lists of owners showing selling signals

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers28 tools · read 2026-10-26

get_hercules_overview
Free, no sign-in. Describes Hercules: what it covers (every NYC tax lot, NYC pre-foreclosures, nationwide US property records, LLC owners and investors), every tool and whether it spends credits, plan and credit prices, and how to connect…
buy_credits
Buy a credit pack with a machine payment (Stripe MPP: card through a shared payment token, or stablecoin). No account or sign-in needed. Packs: starter_80 = 80 credits for $9.99; pack_200 = 200 credits for $24.99; pack_550 = 550 credits…
get_credit_balance
Shows the credit balance of the user's workspace, credits spent today, and recent charges. Free; never spends credits. Use it when the user asks about credits, or before a search that would cost more than the balance.
search_nyc_preforeclosures
Searches NYC properties in preforeclosure only: lis pendens foreclosure filings in Manhattan, Brooklyn, Queens, the Bronx and Staten Island. For one NYC property by address use find_nyc_property; for filtered searches or properties…
run_nyc_preforeclosure_search
Spends credits. Returns the NYC preforeclosure rows from a quote made by search_nyc_preforeclosures and charges the quoted credits (never more). Before calling, tell the user how many credits it costs and get their go-ahead. Quotes expire…
get_nyc_preforeclosure_detail
Spends 1 credit, unless this workspace already pulled the record, then free. Returns the full record for one NYC preforeclosure: case and index number, stage, lender, amounts owed and due, mortgage, owner of record and building facts. NYC…
quote_national_property_search
Quotes a search of national property data: any US property, including NYC properties that are not in preforeclosure. Filters: place (state plus zip, city or county), property type, beds, baths, value, equity, year built, distress flags…
run_national_property_search
Returns the property records from a quote made by quote_national_property_search. Spends credits. Takes only a quote_id. Charges for the records returned, never more than the quote, and releases the rest. Before calling, the user must…
get_property_detail
Spends 2 credits, unless this workspace pulled the same property in the last 7 days, then free. Returns the full record for one property from a national search: owners of record, building and lot, value and equity, open mortgages and…
quote_active_investor_search
Finds who is actively buying in an area: properties in a zip, city or county owned by investors, grouped by owner when run. By default it looks for owners of 2+ properties who bought in this area in the last 12 months. Options…
run_active_investor_search
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. Spends credits. Takes only a quote_id. Charges for the records…
find_nyc_property
Free. Finds New York City tax lots by address, e.g. "40 Water Street Manhattan". Returns each match's BBL for get_nyc_property. NYC only; for other US properties use the national property tools.
get_nyc_property
Free. Returns the public facts for one NYC lot (building, lot, units, year built, last sale) and the owner of record from the city lot file. Also says whether the full report is already unlocked for this workspace and what…
unlock_nyc_property_report
Spends credits: the report price from get_nyc_property (usually 1 credit). Free if this workspace unlocked the same lot in the last year. Returns the full NYC property report: owners and mailing address, deed and mortgage history, sales…
unlock_nyc_owner_contacts
Spends credits: the contacts price from get_nyc_property (usually 3 credits). Takes only the lot's BBL, including a condo unit's BBL from get_nyc_unit; for a unit whose report is locked it first unlocks the unit report (its report price…
search_nyc_owners
Free. Finds people who own or control NYC buildings, by name, directly or through companies. Returns each person's key, building count and boroughs. Use get_nyc_owner_portfolio with the key to list their buildings.
get_nyc_owner_portfolio
Free. Lists the NYC buildings linked to a person from search_nyc_owners, and whether each is held as the owner of record or through a company. The full list is on the Platinum plan; other plans see the first few buildings.
search_nyc_underused_properties
Lists NYC buildings with unused or vacant space: office buildings, school buildings and religious property (churches, convents, synagogues) in any of the five boroughs. A building is flagged when its owner reports it half occupied or…
run_nyc_underused_search
Spends credits. Returns the NYC underused-building rows from a quote made by search_nyc_underused_properties and charges the quoted credits (never more). Before calling, tell the user how many credits it costs and get their go-ahead…
search_nyc_signals
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 foreclosure case, the tax lien sale list…
run_nyc_signals_search
Spends credits. Returns the NYC signal rows from a quote made by search_nyc_signals and charges the quoted credits (never more). Before calling, tell the user how many credits it costs and get their go-ahead. Quotes expire after 10…
get_nyc_unit
Free. Reads one unit inside an NYC building: a condominium unit (its own tax lot) or a co-op apartment (shares, valued here by an estimate from recent sales in its line). Pass the building lot from find_nyc_property and the unit as the…
search_nyc_properties
Free. Never spends credits. Lists NYC lots, condo units and co-op apartments that match building, sale, value, equity and owner filters, 20 rows per page. For condo or co-op owners, set filters.grain to unit (it is set for you when the…
quote_llc_owner_lookup
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. Free: this tool only returns a quote and never spends…
run_llc_owner_lookup
Spends credits. Runs a quote from quote_llc_owner_lookup and returns the company's officers or managers, registered agent and formation details. Charges only if the company is found, never more than the quote. A company that is not found…
quote_investor_firm_search
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 wholesalers. Returns firms with business phones…
run_investor_firm_search
Spends credits. Runs a quote from quote_investor_firm_search and returns the firms with business phones, business emails, website and key people (name and title only). Charges per firm returned, never more than the quote. No firms found…
top_up_credits
Buys a credit pack on the workspace's saved card, the card it already paid Hercules with. There is no checkout page. Packs: 200 credits for $24.99; 550 credits for $59.99; 1500 credits for $149.99. Before you call it, confirm the pack and…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Add it

Claude Code, in a terminal

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

Add to Cursor Add to VS Code

claude.ai, ChatGPT and other clients: add https://app.hercules.properties/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.