Petstore MCP Server

{
  "openapi": "3.1.0",
  "info": {
    "title": "Calculator OAuth API",
    "description": "Calculator API with multiply operation secured by OAuth 2.0",
    "version": "1.0.0"
  },
  "servers": [
    {
      "url": "/api/calculator-oauth",
      "description": "Local server"
    }
  ],
  "security": [
    {
      "OAuth2": ["calculator:read", "calculator:write"]
    }
  ],
  "paths": {
    "/multiply": {
      "post": {
        "summary": "Multiply two numbers",
        "operationId": "multiplyNumbers",
        "description": "Returns the product of two numbers",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "a": {
                    "type": "number",
                    "description": "First number"
                  },
                  "b": {
                    "type": "number",
                    "description": "Second number"
                  }
                },
                "required": ["a", "b"]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Successful operation",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "result": {
                      "type": "number",
                      "description": "The product of a and b"
                    }
                  }
                }
              }
            }
          },
          "401": {
            "description": "Unauthorized - Invalid or missing OAuth token"
          },
          "403": {
            "description": "Forbidden - Insufficient scope"
          }
        }
      }
    }
  },
  "components": {
    "securitySchemes": {
      "OAuth2": {
        "type": "oauth2",
        "description": "OAuth 2.0 authentication",
        "flows": {
          "authorizationCode": {
            "authorizationUrl": "https://auth.calculator-oauth.example.com/oauth/authorize",
            "tokenUrl": "https://auth.calculator-oauth.example.com/oauth/token",
            "scopes": {
              "calculator:read": "Read access to calculator operations",
              "calculator:write": "Write access to calculator operations"
            }
          },
          "clientCredentials": {
            "tokenUrl": "https://auth.calculator-oauth.example.com/oauth/token",
            "scopes": {
              "calculator:read": "Read access to calculator operations",
              "calculator:write": "Write access to calculator operations"
            }
          }
        }
      }
    }
  }
}