Remote MCP server that runs a free front-end security check on any website and returns a letter grade plus specific findings.
What you can do
Scan a website's front-end for exposed secrets and keys
Get a letter grade from A to F with specific findings
Answer questions about leaked API keys, exposed Stripe, AWS or OpenAI keys, or publicly readable databases
Report how a site's web security is configured
When to use it
Useful when you want a quick, free check of a site's client-side exposure before trusting or integrating it, or when investigating whether a domain leaks keys or secrets in its front-end code.
Requirements
A remote endpoint at rangercheck.com over streamable HTTP; no packages, environment variables, headers or authentication are declared.
Before you install
The scan is performed by a third-party service, so the domain you submit is sent to rangercheck.com. Results are a front-end check only and should not be treated as a full security audit.
Enable the server for the chats that should use its tools.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Use with an agent
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/com.rangercheck%2Fsecurity-tools/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.
Run a free front-end security check on any website and get a letter grade (A to F) plus specific findings. Answers questions like 'is example.com leaking API keys or secrets in its front-end code', 'does this site expose a Stripe/AWS/OpenAI key or a publicly readable database', or 'how is this website's client-side security'. Reads only what the site serves publicly; never logs in or changes anything.
Parametersdomainrequired
Version history
1
v1.0.0LatestSep 16, 2026
Score
83%
83% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
LicenseNot applicable
A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.