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What DFX actually covers, and what it does not

dfx_coverage
Read-onlyIdempotent

Measured coverage, served sources, object types and the known gaps stated plainly, including where geography is a single state and where nothing carries a calibrated probability. It separates an empty result from an absent market. With NO arguments: the full grid, every event family, every state, measured. With state and/or event_type: a direct verdict on that one slice (COVERED, NOT_COVERED or UNKNOWN) with the basis it was decided on, which is one small answer instead of a grid to parse. Free, and it queries no data: the verdict comes from a coverage registry, so a NOT_COVERED is measured rather than inferred from an empty search.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
stateNoTwo letter state code. Optional: narrows the answer to this state.
event_typeNoOptional: narrows the answer to this served event family.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEED_RECORDED",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "FORECLOSURE_FILED",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "LOAN_STATUS_CHANGED",
      -  "OWNERSHIP_CHANGED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PORTFOLIO_CONTRACTED",
      -  "PORTFOLIO_EXPANDED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "TAX_LIEN_LISTED",
      -  "USE_CONVERSION_PERMITTED",
      -  "VACANT_FORECLOSURE_REGISTERED",
      -  "ZONING_EVENT"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEED_RECORDED",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "FORECLOSURE_FILED",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURED",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "LOAN_STATUS_CHANGED",
      +  "OWNERSHIP_CHANGED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "TAX_LIEN_LISTED",
      +  "USE_CONVERSION_PERMITTED",
      +  "VACANT_FORECLOSURE_REGISTERED",
      +  "ZONING_EVENT"
      +]
  2. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "FORECLOSURE_FILED",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "LOAN_STATUS_CHANGED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PORTFOLIO_CONTRACTED",
      -  "PORTFOLIO_EXPANDED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "TAX_LIEN_LISTED",
      -  "USE_CONVERSION_PERMITTED",
      -  "VACANT_FORECLOSURE_REGISTERED",
      -  "ZONING_EVENT"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEED_RECORDED",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "FORECLOSURE_FILED",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "LOAN_STATUS_CHANGED",
      +  "OWNERSHIP_CHANGED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "TAX_LIEN_LISTED",
      +  "USE_CONVERSION_PERMITTED",
      +  "VACANT_FORECLOSURE_REGISTERED",
      +  "ZONING_EVENT"
      +]
  3. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "FORECLOSURE_FILED",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "LOAN_STATUS_CHANGED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PORTFOLIO_CONTRACTED",
      -  "PORTFOLIO_EXPANDED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "TAX_LIEN_LISTED",
      -  "USE_CONVERSION_PERMITTED",
      -  "VACANT_FORECLOSURE_REGISTERED"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "FORECLOSURE_FILED",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "LOAN_STATUS_CHANGED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "TAX_LIEN_LISTED",
      +  "USE_CONVERSION_PERMITTED",
      +  "VACANT_FORECLOSURE_REGISTERED",
      +  "ZONING_EVENT"
      +]
  4. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "FORECLOSURE_FILED",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PORTFOLIO_CONTRACTED",
      -  "PORTFOLIO_EXPANDED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "TAX_LIEN_LISTED",
      -  "USE_CONVERSION_PERMITTED",
      -  "VACANT_FORECLOSURE_REGISTERED"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "FORECLOSURE_FILED",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "LOAN_STATUS_CHANGED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "TAX_LIEN_LISTED",
      +  "USE_CONVERSION_PERMITTED",
      +  "VACANT_FORECLOSURE_REGISTERED"
      +]
  5. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PORTFOLIO_CONTRACTED",
      -  "PORTFOLIO_EXPANDED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "USE_CONVERSION_PERMITTED"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "FORECLOSURE_FILED",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "TAX_LIEN_LISTED",
      +  "USE_CONVERSION_PERMITTED",
      +  "VACANT_FORECLOSURE_REGISTERED"
      +]
  6. Changed1 schema field changed
    • changedInput schema / properties / event_type / description
      Previous value: -"Optional: narrows the answer to this family. Same vocabulary as search_property_events."New value: +"Optional: narrows the answer to this served event family."
  7. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "LEASE_EXPIRING",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "USE_CONVERSION_PERMITTED"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PORTFOLIO_CONTRACTED",
      +  "PORTFOLIO_EXPANDED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "USE_CONVERSION_PERMITTED"
      +]
  8. Changed1 schema field changed
    • changedInput schema / properties / event_type / enum
      Previous value: -[
      -  "BANKRUPTCY_EVENT",
      -  "CERTIFICATE_OF_OCCUPANCY",
      -  "COMPANY_CONTRACTED",
      -  "COMPLIANCE_PERIOD_ENDING",
      -  "DEMOLITION_FILED",
      -  "DISTRESS_FLAG_RAISED",
      -  "FORECLOSURE_EVENT",
      -  "LEASE_EXPIRING",
      -  "LEASE_TERM_REVISED",
      -  "LOAN_MATURITY_SCHEDULED",
      -  "LOAN_MODIFIED",
      -  "PERMIT_ISSUED",
      -  "PERMIT_STATUS_CHANGED",
      -  "PROPERTY_SOLD",
      -  "SUBSIDY_CONTRACT_EXPIRING",
      -  "USE_CONVERSION_PERMITTED"
      -]New value: +[
      +  "BANKRUPTCY_EVENT",
      +  "CERTIFICATE_OF_OCCUPANCY",
      +  "COMPLIANCE_PERIOD_ENDING",
      +  "DEMOLITION_FILED",
      +  "DISTRESS_FLAG_RAISED",
      +  "FORECLOSURE_EVENT",
      +  "LEASE_EXPIRING",
      +  "LOAN_MATURITY_SCHEDULED",
      +  "LOAN_MODIFIED",
      +  "PERMIT_ISSUED",
      +  "PERMIT_STATUS_CHANGED",
      +  "PROPERTY_SOLD",
      +  "SUBSIDY_CONTRACT_EXPIRING",
      +  "USE_CONVERSION_PERMITTED"
      +]
  9. Changed2 schema fields changed
    • addedInput schema / properties / event_type
      Added value: +{
      +  "description": "Optional: narrows the answer to this family. Same vocabulary as search_property_events.",
      +  "enum": [
      +    "BANKRUPTCY_EVENT",
      +    "CERTIFICATE_OF_OCCUPANCY",
      +    "COMPANY_CONTRACTED",
      +    "COMPLIANCE_PERIOD_ENDING",
      +    "DEMOLITION_FILED",
      +    "DISTRESS_FLAG_RAISED",
      +    "FORECLOSURE_EVENT",
      +    "LEASE_EXPIRING",
      +    "LEASE_TERM_REVISED",
      +    "LOAN_MATURITY_SCHEDULED",
      +    "LOAN_MODIFIED",
      +    "PERMIT_ISSUED",
      +    "PERMIT_STATUS_CHANGED",
      +    "PROPERTY_SOLD",
      +    "SUBSIDY_CONTRACT_EXPIRING",
      +    "USE_CONVERSION_PERMITTED"
      +  ],
      +  "type": "string"
      +}
    • addedInput schema / properties / state
      Added value: +{
      +  "description": "Two letter state code. Optional: narrows the answer to this state.",
      +  "type": "string"
      +}
  10. First observed

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