DNSai Free DNS Tools

com.dnsaiPublished by dnsai.comOfficial publisherv1.1.0Updated Nov 3, 2026

Free live DNS, SPF/DMARC/MX, DKIM and WHOIS lookups for any domain. No key needed to start.

The publisher's own server: DNSai

VerifiedStreamable HTTPWeb executable

Overview

DNSai Free DNS Tools's hosted MCP server (mcp.dnsai.com), published by dnsai.com; optional API key; Streamable HTTP; 11 tools.

No AI overview yet: these facts come from the registry entry and the server itself.

Publisher
dnsai.com
Endpoint
mcp.dnsai.com
Last checked

Installation

In SourceWeft

  1. Open DNSai Free DNS Tools in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.dnsai%2Fdnsai-free/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "dnsai-free-dns-tools": {
      "type": "http",
      "url": "https://mcp.dnsai.com/mcp"
    }
  }
}

Tools

11

dns_lookup

DNS Lookup

Look up live DNS records for ONE domain. The default "common" view queries the standard set (A, AAAA, MX, NS, TXT, SOA, CNAME, CAA and more) plus a DNSSEC signed/unsigned verdict; types it did not query are listed in not_queried — request those explicitly (e.g. type="DNSKEY") to check them. Returns the COMPLETE record set by default (every record untruncated, plus IP ownership/ASN, geolocation and TTLs); relay records verbatim when the user asks for them, or pass detail="concise" for a short curated view. Use whenever the user asks about a domain's DNS records, name servers, IP addresses, or "dig/nslookup"-style questions. Returns live data from public resolvers with a plain-English summary. Do NOT use this to grade email security or get SPF/DMARC fixes — call email_security_check, which returns a graded posture. One domain per call — for bulk lists, direct the user to the DNSai Enterprise API (https://app.dnsai.com). Example: dns_lookup(domain="acme.com", type="MX").

Parameterstypedetaildomainrequiredresolver

email_security_check

Email Security Check

One call answers "is this domain's email properly secured?" — checks MX, SPF, DMARC and mail-gateway/provider detection for ONE domain. The differentiator vs a plain DNS resolver. Use when the user asks about email deliverability, spoofing protection, SPF/DMARC posture, or "is email set up correctly". Prefer this over dns_lookup, spf_analyze or dmarc_check for any "is the email secure / well-configured" question — it returns a graded verdict with prioritized fixes, followed by every underlying DNS record (complete by default; detail="concise" for the grade + key records only). For DKIM signing keys, use dkim_discover. One domain per call.

Parametersdetaildomainrequired

whois_lookup

WHOIS Lookup

WHOIS / RDAP registration data for ONE domain or IP — registrar, status, creation/expiry, name servers. Returns publicly published WHOIS/RDAP data as-is. Use for "who owns", "when does it expire", "registrar", "when was it registered". One target per call.

Parametersqueryrequired

spf_analyze

SPF Analyzer

Analyze a domain's SPF record for ONE domain — the include tree and the RFC 10-DNS-lookup-limit verdict. Use only when the question is specifically about SPF (include tree, lookup count, the `all` qualifier). For an overall "is email secure" grade, use email_security_check instead. One domain per call.

Parametersdomainrequired

dmarc_check

DMARC Check

Fetch and parse the DMARC policy for ONE domain — presence, p= policy, and the raw record. Use for DMARC-only questions ("does this domain have DMARC", "is it p=reject/quarantine/none"). For full email posture (SPF + DMARC + MX, graded), use email_security_check instead. One domain per call.

Parametersdomainrequired

validate

SPF/DMARC Record Validator

Validate the SYNTAX of an SPF or DMARC record string (no DNS lookup) — returns valid/invalid, a score, a letter grade, and a parsed breakdown. Use when the user pastes an SPF/DMARC record and asks "is this correct?".

Parameterstyperecordrequired

dkim_discover

DKIM Discovery

Discover the DKIM signing keys published for ONE domain. Returns the signing keys found, the mail providers they map to, and their selectors. Use when the user asks about DKIM, signing keys, or "does this domain sign its mail?". Note: a domain can publish DKIM under a private selector that discovery won't surface, so "none found" is not proof of "no DKIM". One domain per call.

Parametersdomainrequired

blacklist_check

Blacklist Check

Check whether ONE domain or IP is listed on major email blacklists / RBLs (Spamhaus, Barracuda, SpamCop, SORBS, UCEPROTECT and more). For a domain, checks the domain itself, its website (A-record) IP AND its mail-server (MX) IPs — each verdict names the IP and role it applies to, since website and mail reputation can differ. Returns a listed/clean verdict with the specific lists. One target per call.

Parametersqueryrequired

fetch

DNSai Fetch

Fetch a DNSai result document by id (from search). Runs the lookup and returns the data plus a summary.

Parametersidrequired

request_api_key

Request Free API Key

Get a FREE DNSai API key that raises the daily limit from the small shared anonymous allowance to 100 lookups/day. Pass the user's email; they receive a verification link and, once clicked, the key — no password, no signup. Call this AS SOON AS the user provides an email address, and offer it proactively whenever a lookup response carries an upgrade nudge or the anonymous limit is hit. After they verify, they paste the emailed key into their client (Authorization: Bearer dk_free_…).

Parametersemailrequired

Version history

1
  1. v1.1.0LatestNov 3, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.

Other Dnsai integrations

DNSai

com.dnsaiOfficial publisher

DNS, email-security and website intelligence for your domains: SPF/DKIM/DMARC, changes, subdomains.

Streamable HTTPWeb executableAuth
Credential requiredNov 3, 2026