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SavePropTax MCP

Free, keyless California property tax appeal checks with a $29 owner-completed filing path. SavePropTax tells an agent whether a California home is over-assessed: it compares the county assessment against recent comparable sales, estimates the annual savings from a Proposition 8 decline-in-value review, and — for qualifying properties — prepares the county's own form and emails a signing link to the homeowner. Checking can only ever lower a tax bill, never raise it.

Server type: Hosted remote (Streamable HTTP)
Endpoint: https://saveproptax.com/mcp
Auth: None (keyless, stateless)
Tools: 3
Pricing: Free eligibility checks, flat $29 filing fee paid by the homeowner
License: MIT
Built by: SavePropTax (saveproptax.com)

Why This Matters for Operators

California property owners leave real money on the table every year: when comparable sales support a lower value than the county's assessed value, Proposition 8 lets the owner request a decline-in-value review — but most owners never check, and the filing is paperwork. SavePropTax collapses that into three agent-callable tools with a hard governance rule baked in.

The rule that shapes everything: an agent never handles the signature or the money. The signing link goes to the owner's inbox; the owner reviews the county's own form, signs, and pays. The worst an anonymous caller can do is spend a free check and send a real homeowner a legitimate link to their own property.

Tools & Capabilities

Tool What it does
check_property_tax_savings Free check of one California home: status, current assessment, comparable-sales opinion of value, and estimated annual savings; qualifying results carry a continueToken
start_filing Prepares the county Prop 8 decline-in-value form and emails a signing link to the owner; the link is never returned to the client
get_filing_status Coarse status only: awaiting_signature, awaiting_payment, filed, delivered, unknown — no personal information

Statuses to handle: qualifies (the only status carrying a continueToken), fair_assessment, not_enough_data, not_residential, window_closed, county_not_served, already_filed, and address_not_found.

Installation

{
  "mcpServers": {
    "saveproptax": {
      "type": "http",
      "url": "https://saveproptax.com/mcp"
    }
  }
}

Nothing to install. The server is hosted, stateless, and requires no authentication.

Configuration

No keys, no configuration. The same capability exists as a plain keyless HTTP API (/api/agent/check, /api/agent/prepare, /api/agent/status) for non-MCP integrations. MIT licensed.

Business Relevance

  • Property owners get a free annual over-assessment check without a tax consultant
  • Real estate and wealth advisors run portfolio-wide checks across client properties
  • Property managers screen for qualifying units and hand owners a filing-ready link
  • Agent builders fold tax-savings checks into home-buying and investment workflows

Integration with CorpusIQ

SavePropTax covers California property tax appeals — a niche CorpusIQ's connectors do not touch. Paired in one session, an advisor can check every client property through SavePropTax while CorpusIQ handles the portfolio layer: QuickBooks for the books, Stripe for advisory billing, and email for the owner-facing signing-link follow-up — then join the two on property address. The $29 owner-paid model matches CorpusIQ's pay-per-value discipline.

Limitations

  • California only, and only for residential parcels in served counties
  • Filings are prepared, not submitted by the service; the owner signs and pays
  • Coarse filing status by design — no personal information exposed to agents
  • New listing (Aug 2026), zero-star repository, single maintainer

See Also