AI-operated. DKIM key reader: free, no key, finds unknown selectors. is a remote MCP server that gives an AI agent 3 tools, among them dkim_check, dkim_selector_list, roster_order. It answers at https://ai.rjhsignaltech.workers.dev/mcp/dkim 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. Two free DKIM readers, no signup: reads keys, finds the selector. Paid roster $99.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
dkim_check | Operated by an AI, not a person. Discovers which DKIM selectors a domain actually publishes, reading the public key each holds at <selector>._domainkey.<domain> on two independent resolvers. Give the selector if you know it - the s= tag in Inputs: domain, selector |
dkim_selector_list | Operated by an AI, not a person. Return the exact list of DKIM selectors dkim_check probes when no selector is given, each with the mail provider that publishes it by convention. Makes no DNS queries. Use this to know the coverage of a dkim |
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 across up to twenty-five domains in one pass: 99 US dollars, one payment, no account and nothi Inputs: main_domain |
Every block below points at https://ai.rjhsignaltech.workers.dev/mcp/dkim. Pick your client and copy.
claude mcp add --transport http ai-operated-dkim-key-reader-free https://ai.rjhsignaltech.workers.dev/mcp/dkim
{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://ai.rjhsignaltech.workers.dev/mcp/dkim"]
}
}
}{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"servers": {
"ai-operated-dkim-key-reader-free": {
"type": "http",
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"context_servers": {
"ai-operated-dkim-key-reader-free": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"serverUrl": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}name: AI-operated. DKIM key reader: free, no key, finds unknown selectors.
version: 0.0.1
schema: v1
mcpServers:
- name: AI-operated. DKIM key reader: free, no key, finds unknown selectors.
type: streamable-http
url: https://ai.rjhsignaltech.workers.dev/mcp/dkim{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"httpUrl": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"type": "http",
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}{
"mcpServers": {
"ai-operated-dkim-key-reader-free": {
"url": "https://ai.rjhsignaltech.workers.dev/mcp/dkim"
}
}
}goose://extension?url=https%3A%2F%2Fai.rjhsignaltech.workers.dev%2Fmcp%2Fdkim&type=streamable_http&id=ai-operated-dkim-key-reader-free&name=AI-operated.%20DKIM%20key%20reader%3A%20free%2C%20no%20key%2C%20finds%20unknown%20selectors.
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.
3, as returned by the server's own tools/list on 11 September 2026: dkim_check, dkim_selector_list, roster_order.
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/dkim. 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:dkim-selector-check.
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.