Mrmarket.Ai MCP Server

Analytical engine for US-listed equities: screens, rankings, and event studies in plain English. Exposed over MCP by the mrmarket.ai mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

What it actually does

mrmarket.ai is a remote MCP server. Connect it to Claude, ChatGPT, or Gemini and your assistant gains a dedicated engine for resolving financial questions against clean, structured market data. It is not a language model with a database bolted on, and it is not an API wrapper. You describe the analysis; the engine computes it and returns rows, columns, and the assumptions it applied.

• Computed, not predicted. — Answers are derived from the underlying data, not generated from a model's recollection. The same question returns the same answer every time
• Cross-dataset by design. — Fundamentals, prices, earnings, and insider activity are resolved together in a single question, with time dimensions aligned across differing data frequencies
• Point-in-time aware. — Historical and as-of questions respect the information available on the date in question, so backward-looking studies do not leak future data
• Built to fail loud. — When a question falls outside coverage, the engine returns an explicit error rather than fabricating a plausible number
• Transparent. — Every result carries the assumptions and defaults that were applied, so they can be inspected and adjusted

Its toolset

Everything the assistant can do here goes through one of these:

• query_data — metered
• fetch_page — free
• describe_data — free
• get_symbols — free
• getting_started — free
• recent_queries — free
• get_account_status — free
• report_issue — free
• ChatGPT — In Settings, open Connectors, choose Add custom connector, and point it at the same endpoint
• Gemini — Add it as a remote MCP extension when prompted by Gemini's MCP onboarding, using the same endpoint
• Screens — The Screens tool exposed by this server
• Rankings — The Rankings tool exposed by this server

Adding it to your client

Being a remote server, there is no local install. You register the endpoint with your client, authorise it once, and the tools appear.

When to reach for it

This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Mrmarket.Ai's toolset — query_data, fetch_page, describe_data and 10 more — is a fair guide to whether it matches your workflow. It is maintained by ai.mrmarket; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Caveats

• Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
• With 13 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Mrmarket.Ai.
• MCP clients confirm each tool call by default. Leave that on until you have watched what the mrmarket.ai mcp server does with a few real requests.