AI-operated. Email authentication reader: six free tools, no key, no signup. is an MCP server with 11 tools an agent can call, among them ai_visibility_order, audit_order, dmarc_check. It answers at https://ai.rjhsignaltech.workers.dev/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 10 September 2026; the last check, on 19 October 2026, succeeded.
AI-operated. Free SPF (RFC 7208 count), DMARC, MTA-STS, DMARC rua/ruf readers. Paid audit $29.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
ai_visibility_order | Operated by an artificial intelligence, not by a person. Return the price, what is read, what is promised and the checkout link for an AI ANSWER-ENGINE READABILITY AUDIT of a SINGLE domain: 249 US dollars, one payment, no account and nothin Inputs: domain |
audit_order | Operated by an artificial intelligence, not by a person. Return the price, what is checked, what is promised and the checkout link for a one-off mail-authentication audit of a SINGLE domain: 29 US dollars, one payment, no account and nothin Inputs: domain |
dmarc_check | Operated by an AI, not a person. Read the DMARC record published at _dmarc.<domain> on two independent resolvers and return every tag parsed out: the policy p, the subdomain policy sp, the percentage pct, and the rua and ruf reporting addre Inputs: domain |
dmarc_report_destination_check | Operated by an AI, not a person. When a domain's DMARC record sends its aggregate reports (rua) or failure reports (ruf) to an address at some other domain - a reporting provider, an agency, a parent company - RFC 7489 section 7.1 requires Inputs: domain |
email_auth_check | Operated by an AI, not a person. Answers whether a domain's email authentication is set up correctly, how exposed it is to spoofing, and whether that hurts deliverability. Reads SPF and DMARC together on two independent resolvers, returning Inputs: domain |
mcp_discovery_check | Operated by an AI, not a person. Point this at any public https MCP endpoint and it reports what an unauthenticated indexer would record about it: the result of an MCP initialize call, the result of tools/list including every tool name and Inputs: url |
mta_sts_check | Operated by an AI, not a person. Read what a domain publishes about transport security for mail sent to it: the MTA-STS announcement TXT record at _mta-sts.<domain>, the policy file it points to at https://mta-sts.<domain>/.well-known/mta-s Inputs: domain |
roster_order | Operated by an artificial intelligence, not by a person. Return the price, what is read, what is promised and the checkout link for a ROSTER read: SPF, DKIM and DMARC across up to twenty-five domains in one pass, 99 US dollars, one payment, Inputs: main_domain |
spf_check | Operated by an AI, not a person. Read the SPF (sender-authentication) record a domain publishes in DNS, on two independent resolvers, and count the DNS lookups it costs a receiver against the limit of 10 in RFC 7208 section 4.6.4. Returns t Inputs: domain |
spf_watch_subscribe | Operated by an artificial intelligence, not by a person. Return the price, the terms and the checkout link for the paid product this tool covers: a watch on ONE domain. The six reading tools here are free and stay free; this tool exists bec Inputs: domain |
web_extract_preview | Operated by an artificial intelligence, not by a person. FREE, no key and no account: fetches one public web page and returns what a text extractor gets from it - HTTP status, final URL after redirects, byte count, title, how many character Inputs: url |
Every block below points at https://ai.rjhsignaltech.workers.dev/mcp. Pick your client and copy.
claude mcp add --transport http ai-operated-email-authentication https://ai.rjhsignaltech.workers.dev/mcp
{
"mcpServers": {
"ai-operated-email-authentication": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://ai.rjhsignaltech.workers.dev/mcp"]
}
}
}{
"mcpServers": {
"ai-operated-email-authentication": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"servers": {
"ai-operated-email-authentication": {
"type": "http",
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"context_servers": {
"ai-operated-email-authentication": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"mcpServers": {
"ai-operated-email-authentication": {
"serverUrl": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"mcpServers": {
"ai-operated-email-authentication": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}name: AI-operated. Email authentication reader: six free tools, no key, no signup.
version: 0.0.1
schema: v1
mcpServers:
- name: AI-operated. Email authentication reader: six free tools, no key, no signup.
type: streamable-http
url: https://ai.rjhsignaltech.workers.dev/mcp{
"mcpServers": {
"ai-operated-email-authentication": {
"httpUrl": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"mcpServers": {
"ai-operated-email-authentication": {
"type": "http",
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}{
"mcpServers": {
"ai-operated-email-authentication": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fai.rjhsignaltech.workers.dev%2Fmcp&type=streamable_http&id=ai-operated-email-authentication&name=AI-operated.%20Email%20authentication%20reader%3A%20six%20free%20tools%2C%20no%20key%2C%20no%20signup.
It answered our last check on 19 October 2026 in 141 ms. Over 6 checks since 10 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
11, as returned by the server's own tools/list on 11 September 2026: ai_visibility_order, audit_order, dmarc_check, dmarc_report_destination_check, email_auth_check, mcp_discovery_check, mta_sts_check, roster_order, and 3 more.
It answered our last check on 19 October 2026 in 141 ms. Over 6 checks since 10 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://ai.rjhsignaltech.workers.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: dev.workers.rjhsignaltech.ai. Endpoint host: ai.rjhsignaltech.workers.dev. ARD identifier: urn:air:dev.workers.rjhsignaltech.ai:mcp:spf-dmarc.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.