# Certificate Search MCP Server

> Use this tool when you need to discover and analyze SSL/TLS certificates for domains and subdomains, enabling security auditing and certificate management. It solves problems related to certificate expiration, misconfiguration, and security vulnerabilities by providing search and analysis capabilities using crt.sh data. The tool takes domain inputs and outputs certificate information, making it ideal for security professionals and developers in various deployment contexts, including Cloudflare Workers.

Canonical page: https://skillsregistry.net/skills/randark-jmt-crt-mcp  
JSON: https://api.skillsregistry.net/v1/skills/randark-jmt-crt-mcp

## Description

Enables SSL/TLS certificate search and analysis using crt.sh data, supporting domain certificate discovery, subdomain enumeration, and security auditing through Cloudflare Workers deployment.

## Trust

- **Trust score (0–1):** 0.69
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** cloud-infra
- **Updated:** 2026-09-02

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/mh895jq4dk)
- **Repository:** <https://github.com/Randark-JMT/crt-mcp>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "randark-jmt-crt-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/randark-jmt-crt-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/randark-jmt-crt-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt