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Mes Frais de Notaire MCP server

Which servers in the official MCP registry are Mes Frais de Notaire's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-26

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Whose server it is
  • Registry namefr.mesfraisnotaire/frais-notaireverified in the MCP registry

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

When we asked itchecked 2026-10-26
  • Stateanswerschecked 2026-10-26
  • Tools3
  • Server calls itselfmes-frais-notaire
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-26 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: estimate notary fees for a property purchase by department; compare notary fee rates between two departments.
  • Checked on 1 of the 7 days it takes to judge reliability.

Once connected

  • For "estimate notary fees for a property purchase by department", the likely first call is calculate_frais_notaire.
  • For "compare notary fee rates between two departments", the likely first call is compare_departements.

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: 1, the first on 2026-10-26
  • INITE MCP scoreafter a weeka score needs 7 daily checks: 1 so far
  • What an agent can do with it2 of 2 use cases
  • Answeredmeasuring1 of the 7 daily checks it takes to print a share
  • Median first answer172 ms
  • Space in an agent's context≈ 473 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 · estimate notary fees for a property purchase by department
  • can do · compare notary fee rates between two departments
  • not sure · check the 2026 departmental transfer duty rate for a purchase

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 (30%), doing the product's job (25%), definitions (20%), context (10%) and use (15%). 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 2026-10-26
  • calculate_frais_notaire

    Estime le total des frais de notaire (DMTO, émoluments, CSI, débours) pour un prix, un département, un type de bien et un profil. Même logique que le site et GET /api/calculate.

  • get_departement_info

    Retourne nom, région, préfecture, taux DMTO standard / appliqué, hausse 2025, slug pour URL.

  • compare_departements

    Pour une liste de codes département, retourne taux appliqué (non primo) et indicateur de hausse 2025. Maximum 25 codes.

How to connect

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

{
  "mcpServers": {
    "frais-notaire": {
      "type": "http",
      "url": "https://www.mesfraisnotaire.fr/api/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http mesfraisnotaire https://www.mesfraisnotaire.fr/api/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://www.mesfraisnotaire.fr/api/mcp as a custom connector in the settings.

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.