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    Homecastr

    The foundation model of physical development.

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    Copyright 2026 Homecastr. All rights reserved.
    Homecastr developer docs

    Start with the job.
    Go as deep as you need.

    Forecast a place, query a standardized panel, evaluate a model, or connect an agent. The quick paths stay small; the complete data and interface inventories remain one click away.

    Make your first request Browse all data
    documented assets
    89
    available now
    23
    benchmark assets
    17
    REST paths
    45
    MCP tools
    44
    Choose your path

    The four most common tasks

    Each guide starts with a working example and links into the full protocol reference only when you need it.

    Most common

    Get a forecast

    Choose the most specific geography you have, from an address or parcel through tract, ZCTA, county, and state.

    GET /api/v1/forecast/tract?geoid=48201231400Choose a forecast endpoint
    Data science

    Review standardized data contracts

    Discover source assets, panel lineage, schemas, coverage, provenance, and geography crosswalks.

    GET /api/v1/data/coverageBrowse the data catalog
    Evaluation

    Evaluate a model

    Use public forecast vintages, source manifests, and model-versus-baseline score tables with pinned provenance.

    GET /api/v1/benchmarks/backtestsExplore benchmarks
    Agents

    Connect an AI agent

    Give agents the same forecast, catalog, lineage, provenance, and benchmark capabilities through structured MCP tools.

    get_panel_lineage({ panel_id })See MCP tools
    One contract across every surface

    Discover once. Switch interfaces without translating the data model.

    REST
    45 OpenAPI paths
    MCP
    44 structured tools
    Schemas
    26 canonical contracts
    TypeScript
    Typed in-repo client
    How completeness works
    1. 1
      Public payloads first

      Launch-ready aggregate forecasts, observations, and benchmarks lead every catalog view.

    2. 2
      Planned assets stay discoverable

      Draft and metadata-only entries document their intended contracts and blockers.

    3. 3
      Restricted means governed

      Holdbacks show policy status without exposing private, licensed, user, or operational records.

    Documentation

    Start with the job you need to do, then move into the complete interface reference.

    Start and build

    Choose a task before choosing a protocol.

    Start HereForecastsData CatalogBenchmarks

    Interfaces

    REST, MCP, and typed client references.

    REST QuickstartFull API ReferenceMCP ToolsTypeScript SDKPython SDK

    Trust and operations

    Contracts, methodology, and live health.

    Schema ReferenceStatusMethodology
    Homecastr developer docs

    Start with the job.
    Go as deep as you need.

    Forecast a place, query a standardized panel, evaluate a model, or connect an agent. The quick paths stay small; the complete data and interface inventories remain one click away.

    Make your first request Browse all data
    documented assets
    89
    available now
    23
    benchmark assets
    17
    REST paths
    45
    MCP tools
    44
    Choose your path

    The four most common tasks

    Each guide starts with a working example and links into the full protocol reference only when you need it.

    Most common

    Get a forecast

    Choose the most specific geography you have, from an address or parcel through tract, ZCTA, county, and state.

    GET /api/v1/forecast/tract?geoid=48201231400Choose a forecast endpoint
    Data science

    Review standardized data contracts

    Discover source assets, panel lineage, schemas, coverage, provenance, and geography crosswalks.

    GET /api/v1/data/coverageBrowse the data catalog
    Evaluation

    Evaluate a model

    Use public forecast vintages, source manifests, and model-versus-baseline score tables with pinned provenance.

    GET /api/v1/benchmarks/backtestsExplore benchmarks
    Agents

    Connect an AI agent

    Give agents the same forecast, catalog, lineage, provenance, and benchmark capabilities through structured MCP tools.

    get_panel_lineage({ panel_id })See MCP tools
    One contract across every surface

    Discover once. Switch interfaces without translating the data model.

    REST
    45 OpenAPI paths
    MCP
    44 structured tools
    Schemas
    26 canonical contracts
    TypeScript
    Typed in-repo client
    How completeness works
    1. 1
      Public payloads first

      Launch-ready aggregate forecasts, observations, and benchmarks lead every catalog view.

    2. 2
      Planned assets stay discoverable

      Draft and metadata-only entries document their intended contracts and blockers.

    3. 3
      Restricted means governed

      Holdbacks show policy status without exposing private, licensed, user, or operational records.

    Documentation

    Start with the job you need to do, then move into the complete interface reference.

    Start and build

    Choose a task before choosing a protocol.

    Start HereForecastsData CatalogBenchmarks

    Interfaces

    REST, MCP, and typed client references.

    REST QuickstartFull API ReferenceMCP ToolsTypeScript SDKPython SDK

    Trust and operations

    Contracts, methodology, and live health.

    Schema ReferenceStatusMethodology