B20 Check
blockersb20check.com
Verify B20 tokens on Base: issuer powers, imposter detection, signed EIP-712 verdicts.
https://b20check.com/mcpWebsiteUnknownMCP 2025-11-25v0.1.2last checked 21 Oct 2026spoke MCP on 81.8% of 88 checks (30 days)initialize in 176 msLast checked 21 Oct 2026
- ✓Answered the MCP handshake (MCP 2025-11-25)
- –Auth scheme could not be determined
- ✓Lists 2 tools
- ✕1 blocker
- !Spoke MCP on 72 of 88 checks (30 days)
How to authenticate
Checked against the endpoint by our probe on 21 Oct 2026. These are the capabilities the server advertises, not a prediction about any particular client.
| Scheme | Unknown |
|---|---|
| Protected-resource metadata | ✕Not found Without it a client has to guess where the authorization server lives. |
| Anonymous access | Refused — credentials required |
What the probe found
blockerCould not reach the endpoint
error sending request for url (https://b20check.com/mcp)
Tools
b20_statsverify_b20_token
Contract history
24 Aug 2026v0.1.2first recorded contract
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Status badge
Status for a README, from the last probe — cached an hour, so up to seven hours behind the endpoint. Links back to this page.
[](https://mcpi.app/servers/b20-check)