Janover MCP server

• Registry namehelp.opportunityzones.www/opportunityzones-helpverified in the MCP registry

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

• Stateanswerschecked 2026-11-02
• Tools13
• Server calls itselfopportunityzones-help
• Server version1.0.0
• Protocol version2025-06-18

On 2026-11-02 the server answered initialize and tools/list without a sign-in. First answer in 316 ms.

• Its tools do every use case we checked: check whether an address sits in an opportunity zone; estimate the deferred gain tax due December 31, 2026; model deferral, step-up and exclusion against paying tax now.
• 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.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
• What an agent can do with it3 of 3 use cases
• Answeredmeasuring3 of the 7 daily checks it takes to print a share
• Median first answer256 ms
• Space in an agent's context≈ 1,604 tokensthe definitions of all its tools (13), which an agent carries on every turn
• Tool definitionsA · 90 of 100
• Typed results0 of 13 toolsdeclared outputSchema: results come typed, read once

• Parameters without a description: in 8 of 13

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 →

• lookup_address

  Geocodes a US street address (Census Bureau geocoder, falling back to OpenStreetMap; tract assignment by the FCC Census Block API) and returns its 2018 Opportunity Zone status (2010 tract), its status for the 2027 designation round (2020…

• lookup_coordinates

  Same as lookup_address for a latitude/longitude point.

• get_tract

  Status for an 11-digit census tract GEOID. A 2010 GEOID is checked against the 2018 designations and a 2020 GEOID against the 2027 round; many GEOIDs exist in both vintages. If you already geocoded a property, pass geoid_2010 and…

• get_state

  Counts of 2018 zones, rural zones, 2027-eligible tracts and their nomination/certification status for one state or territory, with the official source.

• get_key_dates

  The program calendar: OZ 1.0 inclusion date, OZ 2.0 start, designation periods, filing dates.

• calc_180_day_deadline

  Last day to invest a gain in a QOF, with every start date the taxpayer may choose (direct, pass-through K-1, section 1231, RIC/REIT dividend, installment) and whether the window reaches OZ 2.0 (Jan 1, 2027).

• calc_2026_inclusion

  Amount of deferred gain included on Dec 31, 2026 for a pre-2027 QOF investment, with the 10%/15% basis step-up where the holding period was met, and an estimated tax at the user's rate.

• calc_oz2_benefit

  Models an OZ 2.0 investment (5-year deferral, 10% or rural 30% step-up, 10-year exclusion capped at year 30) against paying tax now and investing the remainder.

• calc_substantial_improvement

  How much must be added to a building's basis within 30 months (100%, or 50% in a zone made up entirely of rural areas).

• calc_90_percent_test

  Averages the two semiannual testing dates and, if the fund falls short, computes the Form 8996 Part IV penalty month by month (pass month-end figures in monthly for an exact figure; otherwise testing-date figures are applied to each…

• check_qozb

  Checks the 70% tangible property, 50% gross income, 40% intangibles and 5% nonqualified financial property tests and the excluded-business list.

• plan_working_capital

  Spend-by dates for each cash infusion under the 31-month working capital safe harbor, and the 62-month outer limit available to start-up businesses.

• get_financing_link

  Link where a developer, sponsor or business owner can request debt financing for a project in an Opportunity Zone. Routed to Janover Capital LLC's desk; free, no obligation. Janover arranges loans; it does not sell fund interests.