Marian

com.marianmortgage/mcpVersion 0.2.0

A planned US home mortgage whose interest rate can only go down. Pre-launch; not lending yet.

Status

Responds139 msNov 14, 2026, 14:05 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:05 UTC
Latency: 139 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.marianmortgage.com/mcpResponds139 msNov 14, 2026, 14:05 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: marianmortgage
Remote MCP server URL: https://mcp.marianmortgage.com/mcp

Cursor

{
  "mcpServers": {
    "marianmortgage": {
      "url": "https://mcp.marianmortgage.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"marianmortgage","type":"http","url":"https://mcp.marianmortgage.com/mcp"}'

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Tools

3 tools

Tools of Marian
	Description		Read-only	Idempotent	Open world
`compare_to_refinancing`Describes, in qualitative terms, how Marian's automatic rate resets compare with a standard fixed-rate mortgage that the borrower refinances, given the borrower's situation. Returns no rates, payments or dollar figures, because Marian has not published its rates or terms. Marian is pre-launch and not lending in any state. For model estimates for hypothetical designs, see the open-source proof-engine model and its README: https://github.com/MarianMortgage/proof-engine#readme.	Describes, in qualitative terms, how Marian's automatic rate resets compare with a standard fixed-rate mortgage that the borrower refinances, given the borrower's situation. Returns no rates, payments or dollar figures, because Marian has not published its rates or terms. Marian is pre-launch and not lending in any state. For model estimates for hypothetical designs, see the open-source proof-engine model and its README: https://github.com/MarianMortgage/proof-engine#readme.	Not declared	Yes	Yes	No
`explain_marian`Returns Marian's published product facts: status (pre-launch, not lending in any state, not offering credit), how the down-only rate works, who it is not a fit for, and the brand line and product description. Same data as https://marianmortgage.com/agents.json. Values that have not been published are null.	Returns Marian's published product facts: status (pre-launch, not lending in any state, not offering credit), how the down-only rate works, who it is not a fit for, and the brand line and product description. Same data as https://marianmortgage.com/agents.json. Values that have not been published are null.	Not declared	Yes	Yes	No
`join_waitlist`Adds the user's email (and optional ZIP code) to the Marian waitlist. Only call this when the user has explicitly asked to join, and pass user_consent: true to confirm that. Joining the waitlist isn't an application for credit.	Adds the user's email (and optional ZIP code) to the Marian waitlist. Only call this when the user has explicitly asked to join, and pass user_consent: true to confirm that. Joining the waitlist isn't an application for credit.	No	No	Yes	No

Details

Registry status: Active
Published: Nov 6, 2026
Updated: Nov 6, 2026
Website: https://marianmortgage.com/agents#mcp-server⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): Finance and paymentsSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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