Lint MCP tool schemas for cross-client compatibility and evaluate agent actions with risk scoring via mcp-lint (npx) — 5 tools

{
  "server": "mcp-lint",
  "version": "0.5.3",
  "transport": "stdio",
  "install": "npm install mcp-lint",
  "entry": "dist/mcp-server.js",
  "tools": ["mcp_lint_list_rules", "mcp_lint_explain_rule", "mcp_lint_check_tools", "mcp_lint_fix_tools", "mcp_lint_preflight_action"],
  "calls": [
    {
      "tool": "mcp_lint_list_rules",
      "args": {},
      "result_preview": {
        "total": 19,
        "rules": ["no-required-false (error)", "no-content-encoding (error)", "description-exists (warning)", "no-empty-enum (error)", "max-depth (warning)", "no-recursive-refs (error)", "valid-json-schema-subset (error)", "no-unsupported-formats (warning)", "claude/no-type-array (warning)", "continue/no-default-values (warning,fixable)", "cursor/no-default-without-type (error)", "cursor/no-missing-title (warning)", "gemini/no-optional-without-default (warning)", "gemini/no-nested-objects (warning)", "vscode/max-params (warning)", "windsurf/no-union-types (warning,fixable)", "cline/description-max-length (warning,fixable)", "openai/no-additional-properties (error,fixable)", "openai/strict-types (error)"]
      },
      "ms": 2
    },
    {
      "tool": "mcp_lint_explain_rule",
      "args": {
        "ruleId": "description-exists"
      },
      "result_preview": {
        "id": "description-exists",
        "severity": "warning",
        "clients": ["claude", "cursor", "gemini", "vscode"],
        "fixable": false
      },
      "ms": 2
    },
    {
      "tool": "mcp_lint_explain_rule",
      "args": {
        "ruleId": "openai/no-additional-properties"
      },
      "result_preview": {
        "id": "openai/no-additional-properties",
        "severity": "error",
        "fixable": true,
        "docs": {
          "why": "OpenAI strict mode rejects schemas without additionalProperties:false"
        }
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_check_tools",
      "args": {
        "tools": [
          {
            "name": "get_weather",
            "description": "Get weather",
            "inputSchema": {
              "type": "object",
              "properties": {
                "city": {
                  "type": "string",
                  "description": "City name"
                },
                "units": {
                  "type": "string",
                  "enum": ["celsius", "fahrenheit"]
                }
              }
            }
          }
        ],
        "includeScore": true
      },
      "result_preview": {
        "diagnostics": 5,
        "errors": 1,
        "warnings": 4,
        "quality": {
          "overall": "varies"
        }
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_check_tools",
      "args": {
        "tools": [
          {
            "name": "doStuff",
            "inputSchema": {
              "type": "object",
              "properties": {
                "x": {
                  "type": "string"
                },
                "data": {
                  "type": "object",
                  "properties": {
                    "nested": {
                      "type": "object"
                    }
                  }
                }
              }
            }
          }
        ],
        "includeScore": true
      },
      "result_preview": {
        "diagnostics": 10,
        "errors": 1,
        "warnings": 9,
        "rules_triggered": ["description-exists", "cursor/no-missing-title", "gemini/no-optional-without-default", "openai/no-additional-properties"]
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_check_tools",
      "args": {
        "tools": [
          {
            "name": "get_user",
            "title": "Get User",
            "description": "Retrieve user",
            "inputSchema": {
              "type": "object",
              "properties": {
                "userId": {
                  "type": "string",
                  "description": "User ID",
                  "title": "User ID"
                }
              },
              "required": ["userId"],
              "additionalProperties": false
            }
          }
        ],
        "includeScore": true
      },
      "result_preview": {
        "diagnostics": 0,
        "quality": {
          "overall": 100,
          "grade": "A"
        }
      },
      "ms": 15
    },
    {
      "tool": "mcp_lint_fix_tools",
      "args": {
        "tools": [
          {
            "name": "search",
            "description": "Search",
            "inputSchema": {
              "type": "object",
              "properties": {
                "query": {
                  "type": "string"
                }
              },
              "required": ["query"]
            }
          }
        ],
        "clients": ["openai"]
      },
      "result_preview": {
        "fixesApplied": 1,
        "added": "additionalProperties: false"
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "file_read",
          "tool_name": "read_file",
          "action": "read",
          "target": "/tmp/test.txt"
        }
      },
      "result_preview": {
        "decision": "allow",
        "risk_score": 0.1,
        "reversibility": "reversible"
      },
      "ms": 3
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "shell",
          "tool_name": "run_command",
          "action": "rm -rf /",
          "target": "/"
        }
      },
      "result_preview": {
        "decision": "require_approval",
        "risk_score": 0.75,
        "reversibility": "irreversible",
        "reasons": ["destructive_pattern", "irreversible_operation"]
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "payment",
          "tool_name": "charge_card",
          "action": "charge",
          "estimated_cost_usd": 99.99
        }
      },
      "result_preview": {
        "decision": "deny",
        "risk_score": 1,
        "reversibility": "irreversible",
        "reasons": ["high_cost", "irreversible_operation"]
      },
      "ms": 1
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "database",
          "tool_name": "execute_sql",
          "action": "DROP TABLE users",
          "target": "production_db"
        }
      },
      "result_preview": {
        "decision": "deny",
        "risk_score": 0.95,
        "reasons": ["destructive_pattern", "irreversible_operation"]
      },
      "ms": 0
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "file_delete",
          "tool_name": "delete_file",
          "action": "delete",
          "target": "/etc/passwd"
        }
      },
      "result_preview": {
        "decision": "deny",
        "risk_score": 0.95,
        "reasons": ["sensitive_target", "irreversible_operation"]
      },
      "ms": 0
    },
    {
      "tool": "mcp_lint_preflight_action",
      "args": {
        "action": {
          "tool_type": "email",
          "tool_name": "send_email",
          "action": "send"
        },
        "policyYaml": "rules:\n  - id: block-email\n    when:\n      tool_type: email\n    effect: deny\n    reason: blocked"
      },
      "result_preview": {
        "decision": "deny",
        "matched_policies": ["block-email"]
      },
      "ms": 4
    }
  ]
}