Side-by-Side Model Context Protocol Comparison
Mrmarket.ai vs MCP Polygon)
In-depth architectural comparison of the Mrmarket.ai and MCP Polygon) MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Mrmarket.ai
Finance & Fintech · Remote HTTP/SSE
Quality: 49/100 (Fair) | Auth: No auth required
MCP Polygon)
Finance & Fintech · Local stdio
Quality: 59/100 (Good) | Auth: API Key required
Verdict Summary: Choose Mrmarket.ai if you need specialized Finance & Fintech tools running via a hosted cloud SSE transport. Choose MCP Polygon) if your workspace requires Finance & Fintech integration with local subprocess execution. Both servers can be configured concurrently in your client's
mcpServers manifest.Which MCP Server Should You Choose?
Choose Mrmarket.ai when:
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer remote streaming HTTP/SSE transport architecture.
- Your security boundary fits: No auth required (Free / Open Source).
- Primary tools included: query_data, fetch_page, describe_data.
Choose MCP Polygon) when:
- You need dedicated capabilities in the Finance & Fintech domain.
- You prefer local stdio subprocess transport architecture.
- Your security boundary fits: API Key required (BYOK (Pay Provider Direct)).
- You have access to required keys:
MASSIVE_API_KEY. - Primary tools included: search_endpoints, call_api, query_data.
Feature & Specification Comparison
Tools & Capabilities Breakdown
Mrmarket.ai Tools (8)
query_data
The workhorse. A natural-language financial question in; structured rows and columns out. Screens, rankings, comparisons, time-series, cohort studies, and event studies are all single calls.
fetch_page
The continuation. When a `query_data` result is too large for one response, page 1 comes back with a `pagination.next_cursor`; pass that cursor to `fetch_page` to retrieve the rest. It runs no new query, so it never costs credits — the original `query_data` is charged once.
describe_data
The data catalog. Browse categories and fields, or search for a specific metric, before composing a question.
get_symbols
Fast ticker, sector, and industry resolution. Name to ticker, sector membership, or the full universe in under 50ms.
getting_started
A structured orientation tour with verified example prompts, grouped by use case.
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Mrmarket.ai Configuration
MCP Polygon) Configuration