recon-tool 0.4.1

Domain intelligence CLI and MCP server — tech stack, email security, and signal intelligence from DNS.

recon

Passive domain intelligence from public DNS and Microsoft/Google endpoints.

recon northwindtraders.com

╭──────────────────────── Northwind Traders ───────────────────────╮
│                                                                  │
│  Company:    Northwind Traders                                   │
│  Domain:     northwindtraders.onmicrosoft.com                    │
│  Provider:   Microsoft 365                                       │
│  Tenant ID:  a1b2c3d4-e5f6-7890-abcd-ef1234567890                │
│  Region:     NA                                                  │
│  Auth:       Federated                                           │
│  Confidence: ●●● High (3 sources)                                │
│  Services:   Anthropic (Claude), Atlassian (Jira/Confluence),    │
│              DocuSign, Exchange Autodiscover, Figma,             │
│              Intune / MDM, KnowBe4, Microsoft 365,               │
│              Microsoft Teams, Miro, Salesforce, Slack, Zendesk   │
│                                                                  │
│  Insights:   Federated identity indicators observed (likely Okta)│
│              Email security 4/5 strong (DMARC reject, DKIM,      │
│              SPF strict)                                         │
│              Email gateway: Proofpoint in front of Exchange      │
│              M365 E3/E5 indicators (Intune + federated auth)     │
│              Security stack: KnowBe4 (training), Okta (identity) │
│              AI Adoption: anthropic                              │
│              Modern Collaboration: slack, miro, atlassian, figma │
│                                                                  │
│  Related:    northwind-internal.com                              │
│                                                                  │
╰──────────────────────────────────────────────────────────────────╯

The example above is fictional. All tenant IDs, domains, and service lists are fabricated for illustration.

Give it a domain. It queries public endpoints and DNS records — no credentials, no API keys — and returns what it can find: tenant details, email security posture, SaaS fingerprints, derived signals, certificate intelligence, and neutral posture observations.

Works for Microsoft 365, Google Workspace, or any provider. Useful for anyone who needs domain intelligence — architects, MSPs, security professionals, red teamers, defenders, sales engineers, researchers. Also runs as an MCP server for AI tools.

Why recon?

	recon	dig / nslookup	whatweb	dnsrecon	cloud_enum	Paid tools
Zero credentials	✓	✓	✓	✓	✓	✗
M365 tenant detection	✓	✗	✗	✗	partial	varies
Google Workspace detection	✓	✗	✗	✗	✗	varies
Email security scoring	✓	✗	✗	✗	✗	varies
SaaS fingerprinting (187)	✓	✗	partial	✗	✗	✓
Signal intelligence	✓	✗	✗	✗	✗	✗
Certificate intelligence	✓	✗	✗	✗	✗	varies
Posture analysis	✓	✗	✗	✗	✗	✗
Delta / change detection	✓	✗	✗	✗	✗	✗
Recursive domain chaining	✓	✗	✗	partial	✗	varies
MCP server for AI agents	✓	✗	✗	✗	✗	✗
Extensible (custom YAML)	✓	✗	✗	✗	✗	✗

recon reads the organizational metadata layer — DNS records, identity endpoints, and certificate transparency logs that companies publish to make their email, SaaS, and security infrastructure work. It doesn't scrape websites, probe servers, or analyze page content. It turns infrastructure signals into business intelligence.

Install

Requires Python 3.10+.

pip install recon-tool                    # from PyPI (when published)
pip install -e .                          # or from source
recon doctor                              # verify connectivity

Usage

recon northwindtraders.com                # default panel output
recon northwindtraders.com --json         # structured JSON
recon northwindtraders.com --md           # markdown report
recon northwindtraders.com --html         # self-contained HTML report
recon northwindtraders.com --full         # everything (services + domains + posture)
recon northwindtraders.com --services     # M365 vs GWS vs tech stack split
recon northwindtraders.com --posture      # neutral posture observations
recon northwindtraders.com --compare prev.json  # delta: what changed since last run
recon northwindtraders.com --chain --depth 2    # recursive domain discovery
recon northwindtraders.com --no-cache     # bypass disk cache
recon batch domains.txt --json            # batch mode (default 5 concurrent)
recon batch domains.txt --csv             # batch CSV for spreadsheets
recon batch domains.txt --json -c 10      # batch with 10 concurrent
recon doctor                              # connectivity check
recon doctor --fix                        # scaffold custom config templates
recon mcp                                 # start MCP server (stdio)

Input is normalized automatically — URLs, schemes, www. prefixes, paths, and whitespace are all stripped.

What You Get

Signal	Source
Company name, tenant ID, auth type	Microsoft OIDC + GetUserRealm
Google Workspace auth type, modules, corporate identity	Google login flow + CNAME probing + BIMI VMC
Email provider	MX records
Email security score (0–5)	DMARC + DKIM + SPF + MTA-STS + BIMI
187 SaaS services	TXT, SPF, MX, CNAME, NS, CAA, SRV, DKIM selectors
Email gateway / SASE / security stack	DNS fingerprints
Signal intelligence (29 signals)	Metadata-aware YAML rules with cross-reference conditions
Certificate intelligence	crt.sh metadata: issuance velocity, issuer diversity, cert age
Posture observations	Neutral factual analysis across email, identity, infrastructure
Related domains	CNAME breadcrumbs + certificate transparency (crt.sh)
Delta / change detection	Compare current vs. previous JSON export
Evidence traceability	Per-detection source records with dual confidence scoring

All from public sources. Zero authentication. Results vary by domain.

MCP Server

recon runs as an MCP server for Claude, Cursor, VS Code, Kiro, ChatGPT, or any MCP client:

{
  "mcpServers": {
    "recon": {
      "command": "python",
      "args": ["-m", "recon_tool.server"],
      "autoApprove": ["lookup_tenant", "analyze_posture"]
    }
  }
}

Then ask your AI: "Run a recon lookup on northwindtraders.com and analyze the posture."

Available MCP tools: lookup_tenant, analyze_posture, chain_lookup, reload_data.

See docs/mcp.md for setup details, available tools, and config file locations per client.

Documentation

Doc	Contents
Fingerprints	Detection types, custom fingerprints, email security scoring, related domain enrichment
Signals	4-layer signal intelligence, 29 signal rules, metadata conditions, custom signals
MCP Server	AI agent integration setup, tools, config locations
Roadmap	What's planned, what's not, and why
Legal	Disclaimer, accuracy, fictional examples, third-party notice
Contributing	How to add fingerprints, signals, and code
Changelog	Version history

Development

pip install -e ".[dev]"
pytest tests/                          # 597 tests
ruff check recon_tool/                 # lint
pyright recon_tool/                    # type check

License

MIT — see LICENSE for details.

This tool queries only public DNS records and unauthenticated endpoints. See docs/legal.md for full disclaimer.