Domain WHOIS & SSL Inspector

Web & SEO Tools

Operated by Sourcelane✓ verified

A domain inspection connector that performs RDAP-based WHOIS lookups and live TLS/SSL certificate retrieval for one or many domains (no API key required). It combines RDAP registration metadata and live certificate data by querying RDAP for registrar, IANA ID, creation/updated/expiry timestamps, domain age and days-until-expiry, registration status codes, name servers, and DNSSEC flags, then performing a TLS handshake on port 443 to capture the presented certificate (subject, issuer organization and CN, validity window, days-until-certificate-expiry, subject alternative names, chain validation status, and negotiated TLS protocol). Outputs are structured per-domain records that merge registration/profile metadata with live SSL certificate metadata for downstream analysis, monitoring, and enrichment.

Verified Sep 28, 12:10 AM

$0.01

per domain

Up to 100 per call. Only pay for results returned; failed calls are refunded.

What people use it for

Lead enrichment: append domain age and registrar information to prospect lists.
Churn & renewal signals: detect domains or certificates approaching expiry.
Security & compliance audits: verify certificate issuers, validity windows, and TLS versions across a portfolio.
Brand & domain monitoring: track registrar, status, and name-server changes.
Sales prospecting: segment domain lists by registrar, hosting name servers, or domain age.

Trust & reliability

7d uptime trend

Window	Uptime	Success rate	p50	p95
24h	—	—	—	—
7d	—	—	—	—
30d	—	—	—	—

Calling contract

Call it through Sourcelane's gateway or MCP server. We run the connector, apply your agent's spend guardrails, and bill only the results returned.

Call it via Sourcelane

curl -X POST https://cool-puffin-608.convex.site/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"domain-whois-ssl-inspector","params":{"maxItems":5},"maxResults":10}'

Request params

Field	Type	Required	Description
`checkSsl`	boolean	optional	If enabled, open a TLS connection to port 443 and read the live SSL certificate (issuer, validity, days until expiry).
`maxItems`	integer	optional	Maximum number of domains to inspect. 0 = inspect all domains in the list. Capped at 100 per call.

Each result contains

Field	Type	Description
`domain`	string	Domain
`registrar`	string	Registrar
`registrarIanaId`	string	Registrar Iana Id
`createdDate`	string	Created Date
`updatedDate`	string	Updated Date
`expiryDate`	string	Expiry Date
`domainAgeDays`	integer	Domain Age Days
`expiresInDays`	integer	Expires In Days
`statuses`	array	Statuses
`nameServers`	array	Name Servers
`dnssec`	boolean	Dnssec
`ssl`	object	—
`rdapError`	null	Rdap Error
`sslError`	null	—

Use Domain WHOIS & SSL Inspector from Claude, ChatGPT or Cursor

Pick your tool and connect in under a minute. Then just ask — for example: “For these 50 domains, find contact emails and what e-commerce platform they run on.”

Connect Claude

Web, desktop and mobile. Paste one URL.

1Copy your personal connector URL
2In Claude open Settings → Connectors → Add custom connector
3Paste the URL and click Add — done

Manual setup (config files, REST, Python) +

Claude Code

Adds the Sourcelane MCP server with your key as a header.

terminal

claude mcp add --transport http sourcelane https://cool-puffin-608.convex.site/mcp \
  --header "Authorization: Bearer sl_live_your_agent_key"

Claude Desktop (config file)

Alternative to the connector URL: add to claude_desktop_config.json, then restart Claude.

claude_desktop_config.json

{
  "mcpServers": {
    "sourcelane": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://cool-puffin-608.convex.site/mcp",
        "--header",
        "Authorization:${AUTH_HEADER}"
      ],
      "env": {
        "AUTH_HEADER": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

Cursor & Windsurf

Add to ~/.cursor/mcp.json (or Windsurf's mcp_config.json).

mcp.json

{
  "mcpServers": {
    "sourcelane": {
      "url": "https://cool-puffin-608.convex.site/mcp",
      "headers": {
        "Authorization": "Bearer sl_live_your_agent_key"
      }
    }
  }
}

VS Code

Save as .vscode/mcp.json. VS Code prompts for your key once.

.vscode/mcp.json

{
  "servers": {
    "sourcelane": {
      "type": "http",
      "url": "https://cool-puffin-608.convex.site/mcp",
      "headers": {
        "Authorization": "Bearer ${input:sourcelane-key}"
      }
    }
  },
  "inputs": [
    {
      "type": "promptString",
      "id": "sourcelane-key",
      "description": "Sourcelane agent key",
      "password": true
    }
  ]
}

ChatGPT Custom GPT (Actions)

Create a GPT → Actions → Import from URL, then Authentication: API Key, Bearer.

OpenAPI schema URL

https://sourcelane-amber.vercel.app/openapi.json

REST

One POST. Pass maxResults to cap cost.

curl

curl -X POST https://cool-puffin-608.convex.site/v1/call \
  -H "Authorization: Bearer sl_live_your_agent_key" \
  -H "Content-Type: application/json" \
  -d '{"listing":"domain-whois-ssl-inspector","params":{"maxItems":5},"maxResults":10}'

Python, LangChain, CrewAI, OpenAI Agents SDK…

Wrap the REST call as a tool, or point an MCP client at the endpoint.

python

import requests

res = requests.post(
    "https://cool-puffin-608.convex.site/v1/call",
    headers={"Authorization": "Bearer sl_live_your_agent_key"},
    json={
        "listing": "domain-whois-ssl-inspector",
        "params": {"maxItems":5},
        "maxResults": 10,
    },
    timeout=300,
)
body = res.json()
print(body["receipt"]["chargedMicros"], "micro-USD for", body["receipt"]["results"], "results")
print(body["data"])

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