Encode and decode strings (base64, base64url, hex, percent) via @mukundakatta/base64-mcp (npx)

{
  "server": "@mukundakatta/base64-mcp",
  "version": "0.1.1",
  "transport": "stdio",
  "launch": "npx -y @mukundakatta/base64-mcp",
  "initialize": {
    "request": {
      "jsonrpc": "2.0",
      "id": 1,
      "method": "initialize",
      "params": {
        "protocolVersion": "2024-11-05",
        "capabilities": {},
        "clientInfo": {
          "name": "tani-pathfinder",
          "version": "1.0.0"
        }
      }
    },
    "response": {
      "result": {
        "protocolVersion": "2024-11-05",
        "capabilities": {
          "tools": {}
        },
        "serverInfo": {
          "name": "base64",
          "version": "0.1.0"
        }
      }
    }
  },
  "tools_list": {
    "response": {
      "result": {
        "tools": [
          {
            "name": "transform",
            "description": "Encode or decode a string in base64, base64url, hex, or percent-encoding. Round-trips UTF-8.",
            "inputSchema": {
              "type": "object",
              "properties": {
                "text": {
                  "type": "string",
                  "description": "Source text."
                },
                "operation": {
                  "type": "string",
                  "enum": ["encode", "decode"],
                  "description": "encode or decode."
                },
                "encoding": {
                  "type": "string",
                  "enum": ["base64", "base64url", "hex", "percent"],
                  "default": "base64"
                }
              },
              "required": ["text", "operation"]
            }
          }
        ]
      }
    }
  },
  "tool_calls": [
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "Hello from tani pathfinder!",
            "operation": "encode",
            "encoding": "base64"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "SGVsbG8gZnJvbSB0YW5pIHBhdGhmaW5kZXIh"}"
            }
          ]
        }
      }
    },
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "SGVsbG8gZnJvbSB0YW5pIHBhdGhmaW5kZXIh",
            "operation": "decode",
            "encoding": "base64"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "Hello from tani pathfinder!"}"
            }
          ]
        }
      }
    },
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "Hello World & Goodbye!",
            "operation": "encode",
            "encoding": "percent"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "Hello%20World%20%26%20Goodbye!"}"
            }
          ]
        }
      }
    },
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "agent://pathfinder",
            "operation": "encode",
            "encoding": "hex"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "6167656e743a2f2f7061746866696e646572"}"
            }
          ]
        }
      }
    },
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "6167656e743a2f2f7061746866696e646572",
            "operation": "decode",
            "encoding": "hex"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "agent://pathfinder"}"
            }
          ]
        }
      }
    },
    {
      "request": {
        "method": "tools/call",
        "params": {
          "name": "transform",
          "arguments": {
            "text": "Hello+Wörld 日本語",
            "operation": "encode",
            "encoding": "base64url"
          }
        }
      },
      "response": {
        "result": {
          "content": [
            {
              "type": "text",
              "text": "{"result": "SGVsbG8rV8O2cmxkIOaXpeacrOiqng"}"
            }
          ]
        }
      }
    }
  ]
}