INDIVIDUAL MCP TOOL

email_validate

[PAID — 0.006 USDC on Base via x402] Email syntax check + live MX/A-fallback deliverability + disposable-domain + role-address + free-webmail-provider flags + SPF/DMARC read, with no third-party validation vendor at all: DNS is resolved via this server's own resolver (protocol-level, same sourcing as domain_intel), and the disposable-domain list is a static, self-maintained heuristic.

draconic21-x402-api.onrender.comnone authenticationAvailability not checked

LIVE ENDPOINT

https://draconic21-x402-api.onrender.com/mcp

No auth detected

Connect to this endpoint to inspect the live schema for email_validate and invoke it with your own arguments.

Indexed input schema

{}

Risk classification

Potential side effects detected · medium confidence · heuristic, not a guarantee.

A tool name or description suggests sending messages.

Parent server

draconic21-x402-api.onrender.com

CONNECT WITH APPROVAL

Client installation

Review this server and its permissions before adding it. Secret placeholders must be set locally.

Codex

~/.codex/config.toml

[mcp_servers.draconic21-x402-tools]
url = "https://draconic21-x402-api.onrender.com/mcp"
enabled = true

Claude Code

.mcp.json

{
  "mcpServers": {
    "draconic21-x402-tools": {
      "type": "http",
      "url": "https://draconic21-x402-api.onrender.com/mcp"
    }
  }
}

Claude Desktop

Settings → Connectors → Add custom connector

Name: draconic21-x402-tools
Remote MCP URL: https://draconic21-x402-api.onrender.com/mcp

Add this remote URL as a custom connector in Claude Desktop. Availability depends on the user plan and workspace policy.

Cursor

.cursor/mcp.json

{
  "mcpServers": {
    "draconic21-x402-tools": {
      "url": "https://draconic21-x402-api.onrender.com/mcp"
    }
  }
}

Visual Studio Code

.vscode/mcp.json

Add to Visual Studio Code

{
  "servers": {
    "draconic21-x402-tools": {
      "type": "http",
      "url": "https://draconic21-x402-api.onrender.com/mcp"
    }
  }
}

Generic MCP

Client-specific MCP configuration

{
  "name": "draconic21-x402-tools",
  "transport": "streamable-http",
  "url": "https://draconic21-x402-api.onrender.com/mcp"
}

MCP Inspector

Run the official MCP Inspector locally and enter the indexed Streamable HTTP endpoint.

Related tools

signal_latest — [PAID — 0.03 USDC on Base via x402] Today's ranked Daily Agent Signal: curator judgment, buyer_value, action_hint, and sources on agent-economy demand, with continuity against a stored multi-day archive.
signal_latest_preview — [FREE] A sample response for signal_latest so you can see the shape before paying 0.03 USDC.
signal_delta — [PAID — 0.05 USDC on Base via x402] New, changed, and removed Signal headlines since a stored baseline date (since_date) — a cheap stay-current check over our proprietary archive, not a fresh re-scrape of signal_latest.
signal_delta_preview — [FREE] A sample response for signal_delta so you can see the shape before paying 0.05 USDC.
signal_history — [PAID — 0.1 USDC on Base via x402] The last N days (1-30) of Daily Agent Signal briefs from the proprietary archive, flat-priced regardless of day count — a calendar moat clones cannot backfill.
signal_history_preview — [FREE] A sample response for signal_history so you can see the shape before paying 0.1 USDC.
signal_continuity — [PAID — 0.07 USDC on Base via x402] Which signal ids/topics are stable, rising (recurring onto the latest day, not a rank gain), new, or fading across the last N archived days (1-90) — an archive compound, not a full brief dump (buy signal_history for that).
signal_continuity_preview — [FREE] A sample response for signal_continuity so you can see the shape before paying 0.07 USDC.