SendCheck — EVM address verification (x402) is a remote MCP server that gives an AI agent 3 tools, among them check_address, deep_scan, validate_address. It answers at https://api.pennyforge.org/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 12 September 2026; the last check, on 24 October 2026, succeeded.
Pre-send EVM address checks: free pre-check, $0.01 check, $0.05 deep scan. x402: payment is auth.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
check_address | Paid pre-send verification of one EVM address on one chain ($0.01 USDC via x402, EIP-3009 on Base): checksum, wallet-vs-contract, outgoing activity, native/USDC/USDT balances, leveled verdict with reasons and next action. TWO-PHASE: call wi Inputs: address, chain, x_payment |
deep_scan | Paid deep scan: the full verification across ALL FIVE chains (Base, Ethereum, Arbitrum, Optimism, Polygon) incl. wrong-network detection and USDC/USDT token-mismatch flags ($0.05 USDC via x402, EIP-3009 on Base). TWO-PHASE like check_addres Inputs: address, x_payment |
validate_address | FREE pre-send check of an EVM address: EIP-55 checksum verification (catches typos, dropped characters, clipboard malware) + a note that a passing checksum is a spell-check, not payee verification. Run this before paying for check_address. Inputs: address |
Every block below points at https://api.pennyforge.org/mcp. Pick your client and copy.
claude mcp add --transport http sendcheck-evm-address-verificati https://api.pennyforge.org/mcp
{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://api.pennyforge.org/mcp"]
}
}
}{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"url": "https://api.pennyforge.org/mcp"
}
}
}{
"servers": {
"sendcheck-evm-address-verificati": {
"type": "http",
"url": "https://api.pennyforge.org/mcp"
}
}
}{
"context_servers": {
"sendcheck-evm-address-verificati": {
"url": "https://api.pennyforge.org/mcp"
}
}
}{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"serverUrl": "https://api.pennyforge.org/mcp"
}
}
}{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"url": "https://api.pennyforge.org/mcp"
}
}
}name: SendCheck — EVM address verification (x402)
version: 0.0.1
schema: v1
mcpServers:
- name: SendCheck — EVM address verification (x402)
type: streamable-http
url: https://api.pennyforge.org/mcp{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"httpUrl": "https://api.pennyforge.org/mcp"
}
}
}{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"type": "http",
"url": "https://api.pennyforge.org/mcp"
}
}
}{
"mcpServers": {
"sendcheck-evm-address-verificati": {
"url": "https://api.pennyforge.org/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fapi.pennyforge.org%2Fmcp&type=streamable_http&id=sendcheck-evm-address-verificati&name=SendCheck%20%E2%80%94%20EVM%20address%20verification%20%28x402%29
It answered our last check on 24 October 2026 in 202 ms. Over 6 checks since 12 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by pennyforge.org and served from api.pennyforge.org, the vendor's own domain: https://api.pennyforge.org/mcp.
3, as returned by the server's own tools/list on 23 September 2026: check_address, deep_scan, validate_address.
It answered our last check on 24 October 2026 in 202 ms. Over 6 checks since 12 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://api.pennyforge.org/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: org.pennyforge.api. Endpoint host: api.pennyforge.org. ARD identifier: urn:air:org.pennyforge.api:mcp:sendcheck.
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.