LayerCall is an MCP server with 7 tools an agent can call, among them lookup_phone, score_device, score_domain. It answers at https://www.layercall.com/api/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 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.
Score an IP, email, phone, domain or device for fraud in one call, with the signals behind it.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
lookup_phone | Validate a phone number worldwide against its national numbering plan. Returns E.164, country, line type (mobile/fixed/VoIP/toll-free/premium) and a risk score. Works globally, not US-only. Inputs: phone, country, strictness |
score_device | Judge a browser fingerprint from /fp.js: headless detection, automation frameworks (Selenium, Puppeteer, Playwright), timezone-versus-IP mismatch and repeat-device history. Note the ceiling honestly — the declared signals it relies on are t Inputs: device_id, ip |
score_domain | Profile a domain: registration date from RDAP, registrar, MX/SPF/DMARC configuration, disposable-mail and risky-TLD detection. newly_registered is null when the age genuinely could not be determined — treat that as unknown, not as 'establis Inputs: domain |
score_ip | Risk-score an IPv4 or IPv6 address. Detects commercial VPNs (naming the provider where its own published list confirms it), proxies, Tor exit nodes and datacenter hosting, and returns geolocation, ASN and a 0-100 risk score with an allow/re Inputs: ip, strictness |
score_user | Score an entire signup in one call — any combination of IP, email, phone and domain — returning a single weighted risk score, a verdict, and the top contributing signals. A hard block on any component is never averaged away. This is the too Inputs: ip, email, phone, phone_country, strictness |
verify_agent | Cryptographically verify a Web Bot Auth signature (RFC 9421) — proof of WHICH agent is calling, not a guess from the user-agent. Returns verified true/false plus the agent's identity and declared purpose. This is the only check here that pr Inputs: url, method, headers |
verify_email | Check an email for syntax, MX records, disposable/throwaway providers, role accounts (info@, admin@), homograph lookalikes and domain age. Returns a 0-100 risk score and an allow/review/block verdict. Inputs: email, strictness |
Every block below points at https://www.layercall.com/api/mcp. Pick your client and copy.
claude mcp add --transport http layercall https://www.layercall.com/api/mcp
{
"mcpServers": {
"layercall": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://www.layercall.com/api/mcp"]
}
}
}{
"mcpServers": {
"layercall": {
"url": "https://www.layercall.com/api/mcp"
}
}
}{
"servers": {
"layercall": {
"type": "http",
"url": "https://www.layercall.com/api/mcp"
}
}
}{
"context_servers": {
"layercall": {
"url": "https://www.layercall.com/api/mcp"
}
}
}{
"mcpServers": {
"layercall": {
"serverUrl": "https://www.layercall.com/api/mcp"
}
}
}{
"mcpServers": {
"layercall": {
"url": "https://www.layercall.com/api/mcp"
}
}
}name: LayerCall
version: 0.0.1
schema: v1
mcpServers:
- name: LayerCall
type: streamable-http
url: https://www.layercall.com/api/mcp{
"mcpServers": {
"layercall": {
"httpUrl": "https://www.layercall.com/api/mcp"
}
}
}{
"mcpServers": {
"layercall": {
"type": "http",
"url": "https://www.layercall.com/api/mcp"
}
}
}{
"mcpServers": {
"layercall": {
"url": "https://www.layercall.com/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fwww.layercall.com%2Fapi%2Fmcp&type=streamable_http&id=layercall&name=LayerCall
It answered our last check on 18 October 2026 in 211 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by layercall.com and served from www.layercall.com, the vendor's own domain: https://www.layercall.com/api/mcp.
7, as returned by the server's own tools/list on 31 August 2026: lookup_phone, score_device, score_domain, score_ip, score_user, verify_agent, verify_email.
It answered our last check on 18 October 2026 in 211 ms. Over 10 checks since 5 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://www.layercall.com/api/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: com.layercall. Endpoint host: www.layercall.com. ARD identifier: urn:air:com.layercall:mcp:trust-api.
First indexed 31 August 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.