# Subdomain Finder3 MCP Server

> Use this tool when you need to discover and list subdomains for a given domain, solving problems related to domain enumeration and reconnaissance. It takes a domain as input and outputs a list of associated subdomains through the Subdomain Finder3 API interface. Ideal for use cases requiring subdomain identification within the MCP ecosystem.

Canonical page: https://skillsregistry.net/skills/bach-ai-tools-bachai-subdomain-finder3  
JSON: https://api.skillsregistry.net/v1/skills/bach-ai-tools-bachai-subdomain-finder3

## Description

Enables the discovery and listing of subdomains for a given domain through the Subdomain Finder3 API. It provides a specialized tool for subdomain enumeration within the MCP ecosystem.

## Trust

- **Trust score (0–1):** 0.95
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-28

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/w555nvg2be)
- **Repository:** <https://github.com/BACH-AI-Tools/bachai-subdomain-finder3>

## 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": "bach-ai-tools-bachai-subdomain-finder3"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/bach-ai-tools-bachai-subdomain-finder3` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/bach-ai-tools-bachai-subdomain-finder3/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