{"apiVersion":"v1","directorySlug":"b20check-mcp-37a910f5ab","title":"B20 Check","description":"Check any B20 token on Base before you trade. A $0.01 API call returns a signed EIP-712 verdict on issuer powers: mint, freeze, seize, pause, admin. Free demo, x402 payments, MCP connector for AI agents.","pageUrl":"https://www.mcpbundles.com/skills/b20check-mcp-37a910f5ab","connectPath":"importable","connectAction":"import_server","catalogListing":false,"bundleSlug":null,"listingKind":"remote_mcp","kind":"provider","transportUrl":"https://b20check.com/mcp","hostedMcpUrl":null,"toolCount":2,"toolInventoryStatus":"observed","refreshedAt":"2026-11-03T13:26:00.516172+00:00","registryName":"com.b20check/b20check-mcp-37a910f5ab","registryVersion":"2026.11.3","registryEligible":true,"tools":[{"name":"verify_b20_token","description":"Check whether a token address on Base is a legitimate B20 token and what powers its issuer holds. Call this BEFORE helping the user buy, swap, approve, or move value into any B20 token you have not already verified in this conversation (B20 addresses usually start with 0xb20). Returns a signed verdict: isB20, a verdict of ok/caution/danger/not_applicable, risk flags (mint, freeze, seize, pause, admin, impostor, and more), and the data freshness (indexed/live/not_indexed). not_applicable means th","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","required":["address"],"properties":{"address":{"type":"string","pattern":"^0x[0-9a-fA-F]{40}$"}},"additionalProperties":false},"title":"Verify a B20 token","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"verify_b20_token","displayName":"Verify a B20 token"},{"name":"b20_stats","description":"Report B20 Check's own live usage: how many B20 tokens are indexed and how many paid calls and unique payers it has served in the last 30 days (from the public Coinbase discovery API).","inputSchema":{"type":"object","$schema":"http://json-schema.org/draft-07/schema#","properties":{}},"title":"B20 Check usage","annotations":{"readOnlyHint":true,"untrustedContentHint":true},"logicalName":"b20_stats","displayName":"B20 Check usage"}],"toolSource":"directory_preview","agentAction":"both","installLinks":[{"id":"cursor","label":"Cursor","href":"cursor://anysphere.cursor-deeplink/mcp/install?name=B20-Check&config=eyJ1cmwiOiAiaHR0cHM6Ly9iMjBjaGVjay5jb20vbWNwIn0%3D"},{"id":"vscode","label":"VS Code","href":"vscode:mcp/install?%7B%22name%22%3A%22B20-Check%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fb20check.com%2Fmcp%22%7D"},{"id":"vscode-insiders","label":"VS Code Insiders","href":"vscode-insiders:mcp/install?%7B%22name%22%3A%22B20-Check%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fb20check.com%2Fmcp%22%7D"},{"id":"claude-web","label":"Claude.ai","href":"https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=B20+Check&connectorUrl=https%3A%2F%2Fb20check.com%2Fmcp"},{"id":"codex","label":"Codex","copyText":"codex mcp add \"B20-Check\" --url \"https://b20check.com/mcp\""},{"id":"chatgpt","label":"ChatGPT","href":"https://www.mcpbundles.com/docs/integrations/chatgpt"}],"catalogUrl":"https://www.mcpbundles.com/api/directory/v1/servers/b20check-mcp-37a910f5ab","callUrl":"https://www.mcpbundles.com/api/directory/v1/servers/b20check-mcp-37a910f5ab/tools/{tool}","mcpServerUrl":"https://b20check.com/mcp","liveCatalogUrl":"https://www.mcpbundles.com/api/directory/v1/servers/b20check-mcp-37a910f5ab?live=1"}