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SavePropTax MCP server

Which MCP servers are SavePropTax's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-25

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Whose server it is
  • Registry namecom.saveproptax/saveproptaxverified in the MCP registry

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

When we asked itchecked 2026-10-25
  • Stateanswerschecked 2026-10-25
  • Tools3
  • Server calls itselfsaveproptax
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-25 the server answered initialize and tools/list without a sign-in. First answer in 103 ms.

Should an agent connect itNot proven either way yet
  • Its tools do every use case we checked: check whether assessed value exceeds current home value; file a county decline-in-value property tax review.
  • Checked on 4 of the 7 days it takes to judge reliability.

Once connected

  • For "check whether assessed value exceeds current home value", the likely first call is check_property_tax_savings.
  • For "file a county decline-in-value property tax review", the likely first call is check_property_tax_savings.

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.

Measured dailydaily checks: 4, the first on 2026-10-25
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 4 so far
  • What an agent can do with it2 of 2 use cases
  • Answeredmeasuring4 of the 7 daily checks it takes to print a share
  • Median first answer134 ms
  • Space in an agent's context≈ 543 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsB · 83 of 100
  • Typed results0 of 3 toolsdeclared outputSchema: results come typed, read once
  • Not saying whether it only reads or can destroy: 3 of 3

What an agent can do with it

  • can do · check whether assessed value exceeds current home value
  • can do · file a county decline-in-value property tax review
  • not sure · track the assessor's decision on a filed review

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

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 →

Tools it offers3 tools · read 2026-10-25
  • check_property_tax_savings

    Free check of whether a California home qualifies for a Proposition 8 decline-in-value property tax reduction. Returns a status (qualifies, fair_assessment, not_enough_data, not_residential, window_closed, county_not_served…

  • start_filing

    Start a county filing for a property that qualified in check_property_tax_savings. Prepares the county's own review form and emails a signing link to the OWNER'S email address. The link is never returned here: the owner personally…

  • get_filing_status

    Coarse status of a filing by document id: awaiting_signature, awaiting_payment, filed, delivered, or unknown. Returns no personal information, addresses, or amounts.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Add it

Claude Code, in a terminal

claude mcp add --transport http saveproptax https://saveproptax.com/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://saveproptax.com/mcp as a custom connector in the settings.

OpenAPI spec

4 paths, read 2026-10-25. Open the spec ↗

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.