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Hercules property data

by hercules.properties · remote · no sign-in to list tools · v1.0.0 · published by properties.hercules

NYC and US property records: owners, LLC officers, mortgages, pre-foreclosures and investors.

Changes · 13

28 tools: 13 change things and 15 only read.

Scanned Oct 21, 2026

3 checks matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

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

Findings

Matches of fixed checks, with the text they matched.

2 warn1 info
  • The server marks "get_nyc_preforeclosure_detail" as not read-only (readOnlyHint: false), and its words say it reads.

    Matched text

    annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "get_nyc_preforeclosure_detail" says "get": a word for reading.

    What this check looks for
  • The server marks "get_property_detail" as not read-only (readOnlyHint: false), and its words say it reads.

    Matched text

    annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "get_property_detail" says "get": a word for reading.

    What this check looks for
  • The description mentions "credential".

    Matched text

    description: "...-32042). Pay it and call again with the credential in _meta. With no API key, a new worksp..."

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

28 tools

Changes things 13Claude Code: ask
  • buy_creditsBuy a credit pack with a machine payment (Stripe MPP: card through a shared payment token, or stablecoin).1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.

    Findings

    • Info

      The description mentions "credential".

      Matched text

      description: "...-32042). Pay it and call again with the credential in _meta. With no API key, a new worksp..."

      What this check looks for
    Description, as the server wrote it
    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 for $59.99; pack_1500 = 1500 credits for $149.99. Pay by card (Stripe Link shared payment token, the default) or by stablecoin (USDC on Tempo): set method. The first call returns a payment challenge (JSON-RPC error -32042). Pay it and call again with the credential in _meta. With no API key, a new workspace is created and its API key is returned once: store it and send it as Authorization: Bearer <key>. With an API key or a signed-in account, the credits are added to that workspace. The first card or Link purchase from each payer gets 50% bonus credits.

    Annotations the server declares

    • title: Buy credits with a machine payment
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: true
    • idempotentHint: false
  • get_nyc_preforeclosure_detailSpends 1 credit, unless this workspace already pulled the record, then free.1 finding

    Why it is in this group

    • The name "get_nyc_preforeclosure_detail" says "get": a word for reading.
    • The server marks it as not read-only (readOnlyHint: false).

    Findings

    • Warn

      The server marks "get_nyc_preforeclosure_detail" as not read-only (readOnlyHint: false), and its words say it reads.

      Matched text

      annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "get_nyc_preforeclosure_detail" says "get": a word for reading.

      What this check looks for
    Description, as the server wrote it
    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 preforeclosures only; take the id from search_nyc_preforeclosures. Tell the user it costs 1 credit before calling.

    Annotations the server declares

    • title: Get NYC preforeclosure record
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: false
  • get_property_detailSpends 2 credits, unless this workspace pulled the same property in the last 7 days, then free.1 finding

    Why it is in this group

    • The name "get_property_detail" says "get": a word for reading.
    • The server marks it as not read-only (readOnlyHint: false).

    Findings

    • Warn

      The server marks "get_property_detail" as not read-only (readOnlyHint: false), and its words say it reads.

      Matched text

      annotations: {"readOnlyHint":false,"destructiveHint":false,"idempotentHint":false,"openWorldHint":false}; The name "get_property_detail" says "get": a word for reading.

      What this check looks for
    Description, as the server wrote it
    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 lenders, foreclosure filings and last sale. Take property_id (it starts with "prop_") from run_national_property_search or run_active_investor_search. Tell the user it costs 2 credits and get their go-ahead before calling. For NYC preforeclosures use get_nyc_preforeclosure_detail instead.

    Annotations the server declares

    • title: Get a property record
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: false
  • run_llc_owner_lookupSpends credits.No findings

    Why it is in this group

    • The name "run_llc_owner_lookup" says "run": a word for a change.
    Description, as the server wrote it
    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 costs nothing. Call only after the user agreed to the quoted cost. A quote runs once and expires after 10 minutes.

    Annotations the server declares

    • title: Run an LLC owner lookup
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: false
  • top_up_creditsBuys a credit pack on the workspace's saved card, the card it already paid Hercules with.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    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 the price with the user, unless the user already told you to top up or to keep credits topped up. It charges only when an owner or admin allowed AI top-ups, and only up to the workspace's monthly cap. When AI top-ups are not allowed yet, it charges nothing and returns a one-click approval link for the user. When no card is saved, it charges nothing and returns a link where the user can buy the pack once.

    Annotations the server declares

    • title: Top up credits on the saved card
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: true
    • idempotentHint: false
  • unlock_nyc_owner_contactsSpends credits: the contacts price from get_nyc_property (usually 3 credits).No findings

    Why it is in this group

    • The name "unlock_nyc_owner_contacts" says "unlock": a word for a change.
    Description, as the server wrote it
    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, usually 1 credit), so quote both. Returns how to reach the party in control of that lot: a name, phone numbers (with line type and do-not-call flag) and email addresses, the contact's role (owner, principal, permit filer, owner's representative or office line), the date the contact was found and the newest recorded deed, lease or transfer. When a recorded deed, lease or transfer names a newer party than the city tax roll, that party is the one looked up. Needs the full report unlocked first (unlock_nyc_property_report). Free if already unlocked for this workspace. Credits are charged when a contact is returned, whatever its role; a miss costs nothing. When an unlocked contact is marked stale (a deed, lease or transfer was recorded after it was found, or it is old), call again with refresh: true to look it up again at the normal price; without refresh a repeat call is always free. Tell the user the cost and get their go-ahead before calling.

    Annotations the server declares

    • title: Unlock NYC owner contacts
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: false
  • unlock_nyc_property_reportSpends credits: the report price from get_nyc_property (usually 1 credit).No findings

    Why it is in this group

    • The name "unlock_nyc_property_report" says "unlock": a word for a change.
    Description, as the server wrote it
    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, DOB permits, HPD/DOB/ECB violations, tax bills and assessments, zoning and FAR with unused air rights, HPD registration contacts, pre-foreclosure case and tax-lien flags. Tell the user the cost and get their go-ahead before calling.

    Annotations the server declares

    • title: Unlock an NYC property report
    • readOnlyHint: false
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: false
Only reads 15Claude Code: allow
  • find_nyc_propertyFree.No findings

    Why it is in this group

    • The name "find_nyc_property" says "find": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • title: Find an NYC property
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • get_credit_balanceShows the credit balance of the user's workspace, credits spent today, and recent charges.No findings

    Why it is in this group

    • The name "get_credit_balance" says "get": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • title: Get credit balance
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • get_hercules_overviewFree, no sign-in.No findings

    Why it is in this group

    • The name "get_hercules_overview" says "get": a word for reading.
    Description, as the server wrote it
    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 an account. Call it first when the user asks what Hercules can do or what it costs.

    Annotations the server declares

    • title: Get the Hercules overview
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • get_nyc_owner_portfolioFree.No findings

    Why it is in this group

    • The name "get_nyc_owner_portfolio" says "get": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • title: Get an NYC owner's buildings
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • get_nyc_propertyFree.No findings

    Why it is in this group

    • The name "get_nyc_property" says "get": a word for reading.
    Description, as the server wrote it
    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 and unlock_nyc_owner_contacts cost. When the report is already unlocked it is returned in full.

    Annotations the server declares

    • title: Get an NYC property
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • get_nyc_unitFree.No findings

    Why it is in this group

    • The name "get_nyc_unit" says "get": a word for reading.
    Description, as the server wrote it
    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 person wrote it, e.g. "14E", "Apt 1C" or "#PH-A". Use it whenever the person names a unit, apartment or penthouse; the building lot alone describes the whole building, not the unit.

    Annotations the server declares

    • title: Get one NYC condo unit or co-op apartment
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • quote_llc_owner_lookupUse 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…No findings

    Why it is in this group

    • The name "quote_llc_owner_lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    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 credits. The quote states the credit cost (charged only if the company is found) and what that state's public records show; some states list the company but not its officers. Tell the user the cost and that note, and ask. Only after the user agrees, call run_llc_owner_lookup with the quote_id. Pass the company's exact registered name and the state where it is registered.

    Annotations the server declares

    • title: Quote an LLC owner lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • search_nyc_ownersFree.No findings

    Why it is in this group

    • The name "search_nyc_owners" says "search": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • title: Search NYC owners by name
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • search_nyc_preforeclosuresSearches NYC properties in preforeclosure only: lis pendens foreclosure filings in Manhattan, Brooklyn, Queens, the Bronx and Staten Island.No findings

    Why it is in this group

    • The name "search_nyc_preforeclosures" says "search": a word for reading.
    Description, as the server wrote it
    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 outside NYC use the national property search tools. Filters: borough, foreclosure stage, equity (1-3 family homes only), case age, recently added and amount owed. Returns summary rows, newest first, up to 25 per call (default 10); page with offset. Each row carries the lot's bbl when known. For the owner's phone and email on a row, call get_nyc_property with that bbl, then unlock_nyc_owner_contacts; never search the web for it. Never spends credits. On any paid plan the first 25 summary rows each day are free; other workspaces pay for every row. Rows the workspace already pulled are free again. Past the free rows, rows cost 1 credit per 10, and this tool returns them as a quote instead: tell the user the credit cost and ask before calling run_nyc_preforeclosure_search with the quote_id.

    Annotations the server declares

    • title: Search NYC preforeclosures
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
    • idempotentHint: true
  • search_nyc_propertiesFree.No findings

    Why it is in this group

    • The name "search_nyc_properties" says "search": a word for reading.
    Description, as the server wrote it
    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 asset classes are only condo and co-op): each condo or co-op row is then one condo unit or co-op apartment with its own last sale, estimated value, equity and owner, and names its building. When the person asks for the buildings, set grain to lot. Estimated value (estValueMin, estValueMax) is a sale-based estimate from comparable sales; always say estimated. The city's market value is never shown or filtered. On lots, equity is estimated for 1-3 family homes only. A co-op apartment with no open share loan has 100% equity; with an open share loan its equity is unknown and it never matches an equity filter. ownerBuildingsMin and ownerBuildingsMax count the owner's properties, buildings and units together. Filters the user's plan does not include are left off and named in the result. For one unit's details, call get_nyc_unit with the building BBL and the unit.

    Annotations the server declares

    • title: Search NYC properties and units
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • search_nyc_signalsLists 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 comp…No findings

    Why it is in this group

    • The name "search_nyc_signals" says "search": a word for reading.
    Description, as the server wrote it
    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, open code violations, a vacate order, unused air rights, a teardown lot or a rezoning. Use it for asks like these, with these keys: loans coming due or maturing: loan_maturing; old mortgage, not refinanced: aging_mortgage; long holds or long-time owners: long_hold; likely or motivated sellers: long_hold, absentee_owner, serial_seller, value_below_loan; tired landlords or distressed owners: code_violations, hpd_litigation, tax_lien, vacate_order; underwater or over-leveraged: value_below_loan; free and clear, no mortgage: no_recorded_debt; development sites or air rights: underbuilt, teardown, vacant_land, assemblage; new construction or rezonings: new_building_permit, rezoning_filed, entitled_not_built; recent sales or active buyers: just_sold, serial_buyer. Narrow by boroughs, ZIP codes, neighborhoods (ntas) and building types. Each row gives the BBL, address, owner of record and every signal on the lot with its date. Signals marked likely are estimates; say likely when you repeat them. The result also counts lots per signal in the area. Never spends credits. On any paid plan the first 25 rows each day are free; other workspaces pay for every row. Rows already pulled are free again. Past the free rows, rows cost 1 credit per row, and this tool returns them as a quote: tell the user the credit cost and ask before calling run_nyc_signals_search with the quote_id. No contacts in the result: use unlock_nyc_property_report and then unlock_nyc_owner_contacts on a BBL for the owner's phones and emails. Up to 50 rows per call (default 25), newest signal first; page with offset.

    Annotations the server declares

    • title: Search NYC property signals
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true
  • search_nyc_underused_propertiesLists NYC buildings with unused or vacant space: office buildings, school buildings and religious property (churches, convents, synagogues) in any of the five boroughs.No findings

    Why it is in this group

    • The name "search_nyc_underused_properties" says "search": a word for reading.
    Description, as the server wrote it
    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 less, half or more of its storefronts are reported vacant, it is listed for lease, a city order to vacate it is in force, or it is a school building with no school registered in it. Buildings listed for sale are returned too. Each row gives the BBL, address, owner of record, building size and every figure behind the flag, marked owner-reported, seen or inferred, with its date. The underused flag itself is derived. Never spends credits. On any paid plan the first 25 rows each day are free; other workspaces pay for every row. Rows already pulled are free again. Past the free rows, rows cost 1 credit per row, and this tool returns them as a quote: tell the user the credit cost and ask before calling run_nyc_underused_search with the quote_id. No contacts in the result: use unlock_nyc_property_report and then unlock_nyc_owner_contacts on a BBL for the owner's phones and emails. Up to 50 rows per call (default 25), largest buildings first; page with offset.

    Annotations the server declares

    • title: Search NYC underused buildings
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false
    • idempotentHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__property-data__get_hercules_overview",
      "mcp__property-data__get_credit_balance",
      "mcp__property-data__search_nyc_preforeclosures",
      "mcp__property-data__quote_national_property_search",
      "mcp__property-data__quote_active_investor_search",
      "mcp__property-data__find_nyc_property",
      "mcp__property-data__get_nyc_property",
      "mcp__property-data__search_nyc_owners",
      "mcp__property-data__get_nyc_owner_portfolio",
      "mcp__property-data__search_nyc_underused_properties",
      "mcp__property-data__search_nyc_signals",
      "mcp__property-data__get_nyc_unit",
      "mcp__property-data__search_nyc_properties",
      "mcp__property-data__quote_llc_owner_lookup",
      "mcp__property-data__quote_investor_firm_search"
    ],
    "ask": [
      "mcp__property-data__buy_credits",
      "mcp__property-data__run_nyc_preforeclosure_search",
      "mcp__property-data__get_nyc_preforeclosure_detail",
      "mcp__property-data__run_national_property_search",
      "mcp__property-data__get_property_detail",
      "mcp__property-data__run_active_investor_search",
      "mcp__property-data__unlock_nyc_property_report",
      "mcp__property-data__unlock_nyc_owner_contacts",
      "mcp__property-data__run_nyc_underused_search",
      "mcp__property-data__run_nyc_signals_search",
      "mcp__property-data__run_llc_owner_lookup",
      "mcp__property-data__run_investor_firm_search",
      "mcp__property-data__top_up_credits"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as property-data. Review it before you use it.