Name: subdomain-enum
Price: 0.03 USDC
Availability: InStock

$ man subdomain-enum

agentutility / web-probe / subdomain-enum

PRICE / CALL

$0.03

USDC · base mainnet · scheme: exact

METHOD

POST

CLUSTER

webprobe

CATEGORY

utilities

STATUS

● live

NAME

subdomain-enum — subdomain enumeration / attack-surface mapping / dns recon

SYNOPSIS

POST https://x402.org/v1/subdomain-enum
     Content-Type: application/json
     X-PAYMENT:    <signed-transferWithAuthorization>

     { ... }

↳ first call → 402 Payment Required. Sign USDCtransferWithAuthorization, retry with theX-PAYMENT header.

DESCRIPTION

Subdomain enumeration / attack-surface mapping / DNS recon. Certificate Transparency log mining (crt.sh). All-public data. Each subdomain with first-seen, last-seen, cert count.

INPUT — request schema

property	type	description	req?
domain	string	Root domain to enumerate subdomains for (e.g. example.com); no protocol or path.	required
include_wildcards	boolean	Include *.example.com entries. Default false.	optional

OUTPUT — response shape

field	type	description
domain	string	Echoes the root domain that was enumerated.
subdomain_count	number	Total number of unique subdomains discovered across mined CT log entries.
subdomains	array	Array of subdomain records, each with hostname, first-seen date, last-seen date, and cert count.
cert_log_entries_examined	number	Number of Certificate Transparency log entries scanned from crt.sh for this domain.
source	string	Upstream data source identifier, typically crt.sh for Certificate Transparency log mining.
notes	string	Free-text notes on enumeration coverage, truncation, or caveats about the result set.

EXAMPLES — two ways to call

EXAMPLE 1 · curl

curl -X POST https://x402.org/v1/subdomain-enum \
  -H 'Content-Type: application/json' \
  -d '{ }'

first response = 402 Payment Required with payment requirements; sign + retry with X-PAYMENT.

EXAMPLE 2 · mcp

# install once
claude mcp add x402 --command "npx x402-deployer-mcp"

# then ask Claude Code:
# "use the subdomain-enum tool to ..."

MCP server handles payment automatically — your coding agent just calls the tool by name.

METADATA

tags: securitysubdomainct-logrecon
methods: POST
cluster: webprobe
price: $0.03 USDC per call

ADJACENT — other endpoints in webprobe

endpoint	description	price
arxiv-search	arXiv full-text search.	$0.03
ssl-cert	SSL certificate inspector / TLS cert checker / certificate transparency lookup / ssl expiry.	$0.03
ssl-cert-info	SSL / TLS certificate inspector.	$0.03
archive-snapshot	Wayback Machine API / archive.org wrapper.	$0.02
dmarc-check	DMARC / SPF / DKIM checker.	$0.02
dns-lookup	DNS lookup / DNS resolver / DoH proxy.	$0.02
expand-url	URL expander / redirect chain tracer / link-shortener resolver.	$0.02
password-strength	Password strength meter + breach checker.	$0.02

/subdomain-enum(1)