heade.rs

rs.headePublished by heade.rsOfficial publisherv1.0.0Updated Oct 24, 2026

Look up any domain, IP address or AS number: hosting, DNS, registration, email, TLS and headers.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingSecurity & Monitoring

Overview

AI-generated overview

Lets an assistant look up hosting, DNS, registration, email, TLS and header details for a domain, IP address or AS number.

What you can do
This remote MCP server provides lookup tools for internet identifiers. Given a domain, IP address or autonomous system number, it returns information about hosting, DNS records, domain registration, email-related records, TLS certificates and HTTP headers. It is a read-only reference service reached over a remote endpoint.
When to use it
Useful when an assistant needs to investigate a domain, IP or ASN during research, troubleshooting, security review or due diligence, without the user running separate lookup tools.
Requirements
A remote MCP client that can connect to the streamable HTTP endpoint at heade.rs. No packages, environment variables or headers are declared, and no authentication is declared. Network access to the endpoint is required.
Before you install
Lookups are sent to a third-party service, so the domains, IP addresses and AS numbers you query are visible to that provider. No credentials, payments or write actions are declared in the manifest.

Installation

In SourceWeft

  1. Open heade.rs in the dashboard and add it to a workspace.
  2. 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/rs.heade%2Flookup/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.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "heade-rs": {
      "type": "http",
      "url": "https://heade.rs/mcp"
    }
  }
}

Tools

1

lookup

Look up a domain, IP address or network

Look up a domain, IP address or network (AS number) on heade.rs and return its report. For a domain or IP address: where it's hosted (network, BGP prefix, RPKI, location, cloud region, CDN), registration (RDAP/WHOIS), DNS records and DNSSEC, email security (SPF, DMARC, MTA-STS, BIMI), the certificate, a security-header grade and the response headers, the website's tech stack with end-of-life and vulnerability checks, which AI crawlers it lets in and what it offers agents, and open ports from Shodan InternetDB. For an AS number: its prefixes, RPKI and ASPA, upstreams and peers, internet exchanges and registration. Data is live or mirrored within the hour; a lookup takes a few seconds.

Parametersqueryrequiredformat

Version history

1
  1. v1.0.0LatestSep 28, 2026

Score

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.