B20 Check is an MCP server with 2 tools an agent can call, among them b20_stats, verify_b20_token. It answers at https://b20check.com/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 11 times since 4 September 2026; the last check, on 7 November 2026, succeeded.
Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
b20_stats | Report B20 Check's own live usage: how many B20 tokens are indexed and how many paid calls and unique payers it has served in the last 30 days (from the public Coinbase discovery API). |
verify_b20_token | Check whether a token address on Base is a legitimate B20 token and what powers its issuer holds. Call this BEFORE helping the user buy, swap, approve, or move value into any B20 token you have not already verified in this conversation (B20 Inputs: address |
Every block below points at https://b20check.com/mcp. Pick your client and copy.
claude mcp add --transport http b20-check https://b20check.com/mcp
{
"mcpServers": {
"b20-check": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://b20check.com/mcp"]
}
}
}{
"mcpServers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}{
"servers": {
"b20-check": {
"type": "http",
"url": "https://b20check.com/mcp"
}
}
}{
"context_servers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}{
"mcpServers": {
"b20-check": {
"serverUrl": "https://b20check.com/mcp"
}
}
}{
"mcpServers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}name: B20 Check
version: 0.0.1
schema: v1
mcpServers:
- name: B20 Check
type: streamable-http
url: https://b20check.com/mcp{
"mcpServers": {
"b20-check": {
"httpUrl": "https://b20check.com/mcp"
}
}
}{
"mcpServers": {
"b20-check": {
"type": "http",
"url": "https://b20check.com/mcp"
}
}
}{
"mcpServers": {
"b20-check": {
"url": "https://b20check.com/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fb20check.com%2Fmcp&type=streamable_http&id=b20-check&name=B20%20Check
It answered our last check on 7 November 2026 in 82 ms. Over 11 checks since 4 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by b20check.com and served from b20check.com, the vendor's own domain: https://b20check.com/mcp.
2, as returned by the server's own tools/list on 10 September 2026: b20_stats, verify_b20_token.
It answered our last check on 7 November 2026 in 82 ms. Over 11 checks since 4 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://b20check.com/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.b20check. Endpoint host: b20check.com. ARD identifier: urn:air:com.b20check:mcp:b20check.
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.