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20
MCP MCP 2025-06-18 streamable-http

io.github.rodromer/render-mcp

io.github.rodromer/render-mcp

Hosted browser for AI agents: screenshots, post-JS DOM, console, WCAG. No install, no API key.

Watch this dependency Share evidence report
Uptime
40.0%
5 direct probes · 30d
Response
155ms
last probe
Tools
6
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://render.makermargins.com/mcp
Score: 20/100
Our probe could not complete the MCP handshake.
fail Answers the MCP handshake 10/50
initialize returned HTTP 200: initialize response missing JSON-RPC result.
How to earn +40 points
Return a valid initialize result
POST a JSON-RPC server/discover to the primary URL yourself (2026-07-28: stateless, with _meta and the Mcp-Method header); it must answer 200 with the supported versions, capabilities and serverInfo. Servers on earlier revisions answer initialize with protocolVersion, capabilities and serverInfo.
Docs →
n/a Lists tools, resources or prompts 0/30
Not scored: a catalogue only counts once the handshake succeeds.
n/a 3 or more catalogue items 0/10
Not scored: a catalogue only counts once the handshake succeeds.
pass Describes itself 10/10
94 characters; more than 30 earns these points.

Tools · 6

screenshot_url

Take a screenshot of a web page as it actually renders in a real browser, after JavaScript has run. Use this when you need to see a page rather than read it — checking a layout, confirming a site is u…

rendered_html

Fetch a page's HTML *after* JavaScript has executed. Use this when a plain HTTP fetch returns an empty shell or a loading spinner — single-page apps, sites that build their content client-side, or any…

page_diagnostics

Load a page in a real browser and report what went wrong: JavaScript console errors and warnings, network requests that failed, and the HTTP status of the page itself. Use this when a site looks broke…

accessibility_audit

Run a WCAG accessibility audit on a page using axe-core in a real browser, and report the violations with the elements responsible. Because it runs against a genuinely rendered page, colour-contrast a…

inspect_element

Answer 'why isn't this element showing where I expect?' for a CSS selector on a live page. Returns the resolved box model, computed display/visibility/opacity/position/z-index, colours, whether the el…

url_to_pdf

Render a web page to PDF exactly as a browser would print it. Use this to archive a page, produce a document from a rendered report, or capture something for a record. Returns a PDF file.

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://render.makermargins.com/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "io.github.rodromer/render-mcp": {
      "url": "https://render.makermargins.com/mcp",
      "transport": "streamable-http"
    }
  }
}