host.tools

.well-known inspector

HTTP /api/v1/http/well-known

Probe RFC 8615 .well-known files: security.txt, change-password, openid, mta-sts, etc.

Try: https://host.com https://checkhost.com https://hostinfo.com https://crypt.tools
Related: HTTP headers Security headers grader Redirect chain tracer SSL certificate inspector robots.txt parser sitemap.xml inspector
Result
Raw JSON
API / curl
362 ms · live 
{
    "host": "host.com",
    "count": 16,
    "present": 0,
    "results": {
        "security.txt": {
            "path": "/.well-known/security.txt",
            "status": 403,
            "present": false,
            "ms": 22,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "change-password": {
            "path": "/.well-known/change-password",
            "status": 403,
            "present": false,
            "ms": 25,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "openid-configuration": {
            "path": "/.well-known/openid-configuration",
            "status": 403,
            "present": false,
            "ms": 23,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "oauth-authorization-server": {
            "path": "/.well-known/oauth-authorization-server",
            "status": 403,
            "present": false,
            "ms": 18,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "apple-app-site-association": {
            "path": "/.well-known/apple-app-site-association",
            "status": 403,
            "present": false,
            "ms": 24,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "assetlinks.json": {
            "path": "/.well-known/assetlinks.json",
            "status": 403,
            "present": false,
            "ms": 23,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "mta-sts.txt": {
            "path": "/.well-known/mta-sts.txt",
            "status": 403,
            "present": false,
            "ms": 22,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "gpc.json": {
            "path": "/.well-known/gpc.json",
            "status": 403,
            "present": false,
            "ms": 19,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "matrix/server": {
            "path": "/.well-known/matrix/server",
            "status": 403,
            "present": false,
            "ms": 22,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "matrix/client": {
            "path": "/.well-known/matrix/client",
            "status": 403,
            "present": false,
            "ms": 26,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "webfinger": {
            "path": "/.well-known/webfinger?resource=acct:[email protected]",
            "status": 403,
            "present": false,
            "ms": 23,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "host-meta": {
            "path": "/.well-known/host-meta",
            "status": 403,
            "present": false,
            "ms": 21,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "nodeinfo": {
            "path": "/.well-known/nodeinfo",
            "status": 403,
            "present": false,
            "ms": 25,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "did.json": {
            "path": "/.well-known/did.json",
            "status": 403,
            "present": false,
            "ms": 19,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "pki-validation/": {
            "path": "/.well-known/pki-validation/",
            "status": 403,
            "present": false,
            "ms": 29,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        },
        "acme-challenge/": {
            "path": "/.well-known/acme-challenge/",
            "status": 403,
            "present": false,
            "ms": 18,
            "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
        }
    }
}
{
    "ok": true,
    "slug": "http/well-known",
    "title": ".well-known inspector",
    "ms": 362,
    "data": {
        "host": "host.com",
        "count": 16,
        "present": 0,
        "results": {
            "security.txt": {
                "path": "/.well-known/security.txt",
                "status": 403,
                "present": false,
                "ms": 22,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "change-password": {
                "path": "/.well-known/change-password",
                "status": 403,
                "present": false,
                "ms": 25,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "openid-configuration": {
                "path": "/.well-known/openid-configuration",
                "status": 403,
                "present": false,
                "ms": 23,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "oauth-authorization-server": {
                "path": "/.well-known/oauth-authorization-server",
                "status": 403,
                "present": false,
                "ms": 18,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "apple-app-site-association": {
                "path": "/.well-known/apple-app-site-association",
                "status": 403,
                "present": false,
                "ms": 24,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "assetlinks.json": {
                "path": "/.well-known/assetlinks.json",
                "status": 403,
                "present": false,
                "ms": 23,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "mta-sts.txt": {
                "path": "/.well-known/mta-sts.txt",
                "status": 403,
                "present": false,
                "ms": 22,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "gpc.json": {
                "path": "/.well-known/gpc.json",
                "status": 403,
                "present": false,
                "ms": 19,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "matrix/server": {
                "path": "/.well-known/matrix/server",
                "status": 403,
                "present": false,
                "ms": 22,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "matrix/client": {
                "path": "/.well-known/matrix/client",
                "status": 403,
                "present": false,
                "ms": 26,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "webfinger": {
                "path": "/.well-known/webfinger?resource=acct:[email protected]",
                "status": 403,
                "present": false,
                "ms": 23,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "host-meta": {
                "path": "/.well-known/host-meta",
                "status": 403,
                "present": false,
                "ms": 21,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "nodeinfo": {
                "path": "/.well-known/nodeinfo",
                "status": 403,
                "present": false,
                "ms": 25,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "did.json": {
                "path": "/.well-known/did.json",
                "status": 403,
                "present": false,
                "ms": 19,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "pki-validation/": {
                "path": "/.well-known/pki-validation/",
                "status": 403,
                "present": false,
                "ms": 29,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            },
            "acme-challenge/": {
                "path": "/.well-known/acme-challenge/",
                "status": 403,
                "present": false,
                "ms": 18,
                "preview": "<!DOCTYPE html><html lang=\"en-US\"><head><title>Just a moment...</title><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=Edge\"><meta name=\"robots\" content=\"noindex,nofollow\"><m"
            }
        }
    },
    "source": "live",
    "meta": []
}
JSON endpoint
/api/v1/http/well-known?q=https%3A%2F%2Fhost.com
curl
curl -s '/api/v1/http/well-known?q=https%3A%2F%2Fhost.com'
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How to use .well-known inspector
  1. 1
    Paste your input

    Enter the value at the top — domain, IP, URL, email, ASN, hash, whatever fits this tool. The smart input auto-detects type.

  2. 2
    Click "Inspect"

    host.tools issues real probes (DNS, HTTP, TCP, TLS, WHOIS where applicable) and renders the result in milliseconds.

  3. 3
    Open the API tab

    Every web tool has a sibling /api/v1/http/well-known JSON endpoint with the same payload. One copy-as-curl click and you're scripting it.

Why this matters

Headers are how the modern web declares its security posture. Auditing them is the highest-ROI thing you can do this week.

API equivalent
/api/v1/http/well-known?q=https%3A%2F%2Fhost.com 
curl -s '/api/v1/http/well-known?q=https%3A%2F%2Fhost.com'
Embed this tool
<iframe src="/http/well-known?q={INPUT}&embed=1"
  width="100%" height="600" frameborder="0"></iframe>

Drop into any HTML page. The embed=1 flag hides nav and footer.

FAQ · .well-known inspector

Common questions

Is .well-known inspector free?
Yes — every tool is free on the web with a 200/hour rate limit per IP. The matching API endpoint /api/v1/http/well-known is free up to 100 requests/hour, no key required.
Where does the data come from?
Real-time probes against authoritative sources (DNS root, RIRs, registries, the target server itself), plus partner data feeds from hostinfo.com (GeoIP/ASN) and hostcheck.com (reputation).
How fresh are the results?
Live by default. Cached for 5 minutes to make repeat queries instant; pass ?nocache=1 for a forced refresh.
Can I run this from the command line?
Yes — every tool ships with a copy-as-curl. There's also an official CLI: host.tools http well-known YOUR_INPUT.
Can I monitor results over time?
Pro tier lets you schedule any tool to run every 1/5/15/60 min and alert on diff. See monitors.
host.tools Pro

Run .well-known inspector on a schedule. Get pinged when it changes.

Pro gets you bulk lookups, monitors, webhook alerts, history, exports and 10,000 API calls/day. $19/mo.

See pricing Tour monitors
  • ✓Schedule any tool — every 1, 5, 15, 60 min
  • ✓Diff against last run, alert on change
  • ✓Webhook + email + Slack + PagerDuty + OpsGenie
  • ✓Bulk CSV upload, 1,000 inputs per job
  • ✓Export results as CSV / NDJSON / Excel
  • ✓90-day history, comparison view