Server definition

Hash: sha256:4c41df28b4d868b2a7bb802425e4162a6a5d3cbe421e33515f6e7143805b6854
What it is: What a remote MCP server returned when asked what it offers: 2 tools

The blob, as servednamed by its sha256

{
  "instructions": "Tools to check B20 tokens on Base. Run verify_b20_token before assisting with any value movement into a B20 token you have not already checked. Relay the verdict and flags plainly; never present a not_indexed or errored result as safe.",
  "tools": [
    {
      "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": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "properties": {},
        "type": "object"
      },
      "name": "b20_stats",
      "outputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "l30DaysTotalCalls": {
            "type": [
              "number",
              "null"
            ]
          },
          "l30DaysUniquePayers": {
            "type": [
              "number",
              "null"
            ]
          },
          "lastUpdated": {
            "type": "string"
          },
          "snapshotBlock": {
            "type": "number"
          },
          "source": {
            "type": "string"
          },
          "tokensIndexed": {
            "type": "number"
          }
        },
        "type": "object"
      }
    },
    {
      "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 the address is not a B20 and not a recognized canonical asset: do NOT read it as safe, there is simply nothing B20-specific to vouch for. Never treat a not_indexed or error result as safe either: a token that cannot be fully checked is never a clean pass. The result carries an EIP-712 signature the user can verify independently; do not overstate it as a guarantee of safety, report what the flags and verdict actually say.",
      "inputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "The token contract address on Base to check (B20 addresses usually start with 0xb20).",
            "pattern": "^0x[0-9a-fA-F]{40}$",
            "type": "string"
          }
        },
        "required": [
          "address"
        ],
        "type": "object"
      },
      "name": "verify_b20_token",
      "outputSchema": {
        "$schema": "http://json-schema.org/draft-07/schema#",
        "additionalProperties": false,
        "properties": {
          "address": {
            "description": "The checked token address (EIP-55).",
            "type": "string"
          },
          "attestation": {
            "description": "Block-pinned EIP-712 attestation; verification recipe at https://b20check.com/v1/schema"
          },
          "creation": {},
          "dataSource": {
            "description": "Data freshness. not_indexed = powers could not be fully checked; never a clean pass.",
            "enum": [
              "indexed",
              "live",
              "not_indexed"
            ],
            "type": "string"
          },
          "flags": {
            "description": "Risk flags. Derivation rules: https://b20check.com/methodology",
            "items": {
              "additionalProperties": false,
              "properties": {
                "code": {
                  "type": "string"
                },
                "detail": {
                  "type": "string"
                },
                "severity": {
                  "enum": [
                    "info",
                    "low",
                    "medium",
                    "high"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "code",
                "severity",
                "detail"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "isB20": {
            "description": "True only for a factory-native B20 token.",
            "type": "boolean"
          },
          "issuerActivity": {},
          "issuerPowers": {
            "description": "mint/burn/pause/freeze/seize/admin powers, latent-inclusive."
          },
          "network": {
            "type": "string"
          },
          "variant": {},
          "verdict": {
            "description": "Roll-up verdict. not_applicable = out of scope, do NOT read as safe.",
            "enum": [
              "ok",
              "caution",
              "danger",
              "not_applicable"
            ],
            "type": "string"
          }
        },
        "required": [
          "address",
          "isB20",
          "verdict",
          "dataSource",
          "flags"
        ],
        "type": "object"
      }
    }
  ]
}

Verify it yourself

curl -s https://api.teppi.xyz/v1/evidence/sha256:4c41df28b4d868b2a7bb802425e4162a6a5d3cbe421e33515f6e7143805b6854 | sha256sum