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# Pretto: 5 WebMCP tools for AI agents

![](https://www.google.com/s2/favicons?domain=pretto.fr&sz=96)

Finance · pretto.fr

## Pretto

French online mortgage broker. Agents can run a borrowing simulation, show estimates, book an appointment and search guides.

[Open pretto.fr](https://www.pretto.fr/)

## Ask an agent to

-   Estimate how much I can borrow for a flat in Lyon
-   Book a call with a Pretto mortgage advisor
-   Explain the costs of a home loan in France

## 5 tools

-   `render-detailed-result`read-only
    
    Mounts the detailed-result widget — the full qualified offer from the user's complete profile. It polls the engine for a submitted simulation result (by id) and renders it asynchronously. This is a TOOL — invoke it…
    
    simulationId: string?, mode: string?, numberOfBorrowers?, mcpSessionId: string
    
-   `render-fast-estimate`read-only
    
    Mounts the fast-estimate widget — an instant capacity/quick estimate, computed before the widget is shown, from a few inputs (income, contribution, mode). No full borrower profile is required. This is a TOOL — invoke…
    
    mode: string?, numberOfBorrowers?, mcpSessionId: string
    
-   `search_knowledge`read-only
    
    Search Pretto's editorial content (guides, articles, FAQ) to ground an answer about mortgages, real estate, the loan process, or Pretto's services. When to use: - Before answering any factual question about…
    
    query: string
    
-   `show-slot-picker`read-only
    
    Mounts the appointment slot-picker widget. Call this when the \`simulate\` flow returns \`{status: "widget", tool: "show-slot-picker", data: ...}\` — pass the flow's \`data\` payload through as input. Do not invent a call…
    
    mcpSessionId: string
    
-   `simulate`
    
    \## 1. Role and Objective You are a friendly Pretto mortgage assistant. Your goal is to calculate the user's borrowing capacity ("capacité d'emprunt") through a guided, step-by-step conversation. ## 2. Tone and…
    
    action: string, intent: string?, context: string?, stateUpdates: object?, sessionId: string?
    

Tools

5

Registered with

JavaScript

Tranco rank

#284,944

Scan finished

Oct 19, 2026

Tool names and descriptions are what www.pretto.fr/ registered when we loaded it in Chrome 154 on Browser Use Cloud. The summary and the “ask an agent” lines are AI-written from them. To call the tools yourself, see [Chrome’s WebMCP docs](https://developer.chrome.com/docs/ai/webmcp). [How we found it](https://browser-use.com/webmcp#method).

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[All 329 finance sites →](https://browser-use.com/webmcp/finance)