{
  "title": "Currency converter",
  "human_url": "https://happytails.ai/en/finance-tools/currency-converter/",
  "agent_url": "https://happytails.ai/agents/en/finance-tools/currency-converter/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/finance-tools/currency-converter.md",
  "content": "Currency converter\nLicensed rate feed, timestamp and source.\nHow to use Currency converter\nEnter amount in the input field.\nReview the settings, then choose Convert amount.\nReview the result, then use Copy result or a download link when available.\nWorking with currency converter\nFinancial calculators illustrate how inputs such as rate, term and contribution affect a result. They do not predict future market performance or determine which financial choice suits a particular person.\nCommon questions\nIs a projected return guaranteed?\nNo. A calculation applies the supplied assumptions. Actual returns, fees and other conditions can differ.\nWhy do monthly and annual rates give different totals?\nThe conversion depends on compounding and on whether a rate is nominal or effective. Use the definition supplied with the financial product or dataset.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [],
  "tool": {
    "id": "currency-converter",
    "category": "finance-tools",
    "built": true,
    "requirements": "Licensed rate feed, timestamp and source; distinguish indicative from actual transfer rates.",
    "implementation": {
      "fields": [
        {
          "key": "source",
          "label": "From currency",
          "value": "EUR",
          "type": "text"
        },
        {
          "key": "target",
          "label": "To currency",
          "value": "USD",
          "type": "text"
        }
      ],
      "processing": "Server required",
      "note": "Fetches dated reference exchange rates from Frankfurter via the local server. Not a live trading quote; fees are excluded.",
      "experience": {
        "automatic": false,
        "single": true,
        "label": "Amount",
        "placeholder": "100",
        "help": "Up to 1,000,000 characters. Review the settings before running.",
        "action": "Convert amount"
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "POST /api/v1/tools/currency-converter/run",
    "api": {
      "id": "currency-converter",
      "name": "Currency converter",
      "category": "finance-tools",
      "description": "Licensed rate feed, timestamp and source.",
      "notes": "Fetches dated reference exchange rates from Frankfurter via the local server. Not a live trading quote; fees are excluded.",
      "human_path": "/en/finance-tools/currency-converter/",
      "method": "POST",
      "endpoint": "/api/v1/tools/currency-converter/run",
      "schema_url": "/api/v1/tools/currency-converter",
      "input_schema": {
        "type": "object",
        "additionalProperties": false,
        "properties": {
          "input": {
            "type": "string",
            "maxLength": 1000000,
            "default": "",
            "description": "Plain text input. File tools use files instead unless otherwise documented."
          },
          "options": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
              "source": {
                "type": "string",
                "description": "From currency",
                "default": "EUR"
              },
              "target": {
                "type": "string",
                "description": "To currency",
                "default": "USD"
              }
            }
          }
        }
      },
      "output_schema": {
        "type": "object",
        "required": [
          "tool",
          "result"
        ],
        "properties": {
          "tool": {
            "type": "string"
          },
          "result": {
            "type": "object",
            "required": [
              "text",
              "files"
            ],
            "properties": {
              "text": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "data": {
                "description": "Parsed JSON when the textual result is JSON."
              },
              "name": {
                "type": "string"
              },
              "mime": {
                "type": "string"
              },
              "files": {
                "type": "array",
                "items": {
                  "type": "object",
                  "required": [
                    "name",
                    "mime",
                    "bytes",
                    "base64"
                  ],
                  "properties": {
                    "name": {
                      "type": "string"
                    },
                    "mime": {
                      "type": "string"
                    },
                    "bytes": {
                      "type": "integer"
                    },
                    "base64": {
                      "type": "string",
                      "contentEncoding": "base64"
                    }
                  }
                }
              }
            }
          }
        }
      },
      "processing": "Server; contacts public network services",
      "limits": {
        "request_bytes": 8388608,
        "input_characters": 1000000,
        "files_bytes": 5242880,
        "max_files": 0,
        "timeout_seconds": null
      }
    },
    "agent_processing": "Server; contacts public network services",
    "browser_agent": {
      "supported": true,
      "name": "run_current_tool",
      "discovery": "WebMCP on the human page in a supporting browser",
      "verification": "See audit/API-AUDIT.md; availability is not verification"
    }
  },
  "markdown": "# Currency converter\n\n- Human page: https://happytails.ai/en/finance-tools/currency-converter/\n- Markdown: https://happytails.ai/en/finance-tools/currency-converter.md\n- Structured JSON: https://happytails.ai/agents/en/finance-tools/currency-converter/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `currency-converter` |\n| Category | finance-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Server required |\n| HTTP API | /api/v1/tools/currency-converter/run |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nFetches dated reference exchange rates from Frankfurter via the local server. Not a live trading quote; fees are excluded.\n\n### Inputs and settings\n\nText input: Amount.\n\nExample or placeholder shown in the interface (not a validated fixture):\n\n```text\n100\n```\n\nUp to 1,000,000 characters. Review the settings before running.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `source` | From currency | text | \"EUR\" |  |\n| `target` | To currency | text | \"USD\" |  |\n\n### HTTP contract\n\nAPI calls process supplied data on the server. The website origin is `https://happytails.ai`. Server API hosting is not connected on the public website yet. Use your local server origin to test these requests.\n\n```http\nPOST https://happytails.ai/api/v1/tools/currency-converter/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/currency-converter.md) · [Shared API guide](https://happytails.ai/en/api.md)\n\n#### Limits\n\n| Limit | Value |\n| --- | --- |\n| request_bytes | 8388608 |\n| input_characters | 1000000 |\n| files_bytes | 5242880 |\n| max_files | 0 |\n| timeout_seconds | Operation-specific network bounds |\n\n#### Complete input schema\n\n```json\n{\n  \"type\": \"object\",\n  \"additionalProperties\": false,\n  \"properties\": {\n    \"input\": {\n      \"type\": \"string\",\n      \"maxLength\": 1000000,\n      \"default\": \"\",\n      \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n    },\n    \"options\": {\n      \"type\": \"object\",\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"source\": {\n          \"type\": \"string\",\n          \"description\": \"From currency\",\n          \"default\": \"EUR\"\n        },\n        \"target\": {\n          \"type\": \"string\",\n          \"description\": \"To currency\",\n          \"default\": \"USD\"\n        }\n      }\n    }\n  }\n}\n```\n\n#### Complete output schema\n\n```json\n{\n  \"type\": \"object\",\n  \"required\": [\n    \"tool\",\n    \"result\"\n  ],\n  \"properties\": {\n    \"tool\": {\n      \"type\": \"string\"\n    },\n    \"result\": {\n      \"type\": \"object\",\n      \"required\": [\n        \"text\",\n        \"files\"\n      ],\n      \"properties\": {\n        \"text\": {\n          \"type\": [\n            \"string\",\n            \"null\"\n          ]\n        },\n        \"data\": {\n          \"description\": \"Parsed JSON when the textual result is JSON.\"\n        },\n        \"name\": {\n          \"type\": \"string\"\n        },\n        \"mime\": {\n          \"type\": \"string\"\n        },\n        \"files\": {\n          \"type\": \"array\",\n          \"items\": {\n            \"type\": \"object\",\n            \"required\": [\n              \"name\",\n              \"mime\",\n              \"bytes\",\n              \"base64\"\n            ],\n            \"properties\": {\n              \"name\": {\n                \"type\": \"string\"\n              },\n              \"mime\": {\n                \"type\": \"string\"\n              },\n              \"bytes\": {\n                \"type\": \"integer\"\n              },\n              \"base64\": {\n                \"type\": \"string\",\n                \"contentEncoding\": \"base64\"\n              }\n            }\n          }\n        }\n      }\n    }\n  }\n}\n```\n\n#### Error and retry handling\n\nFailures return a non-200 status and `error.code` plus `error.message`. Correct invalid input before retrying; retry server-busy responses with bounded backoff. Returned files contain Base64 data, not persistent download URLs. Decode and inspect the output before treating conversion as successful. See the shared API guide for the complete status and timeout rules.\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nLicensed rate feed, timestamp and source; distinguish indicative from actual transfer rates.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"currency-converter\",\n  \"category\": \"finance-tools\",\n  \"built\": true,\n  \"requirements\": \"Licensed rate feed, timestamp and source; distinguish indicative from actual transfer rates.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"source\",\n        \"label\": \"From currency\",\n        \"value\": \"EUR\",\n        \"type\": \"text\"\n      },\n      {\n        \"key\": \"target\",\n        \"label\": \"To currency\",\n        \"value\": \"USD\",\n        \"type\": \"text\"\n      }\n    ],\n    \"processing\": \"Server required\",\n    \"note\": \"Fetches dated reference exchange rates from Frankfurter via the local server. Not a live trading quote; fees are excluded.\",\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": true,\n      \"label\": \"Amount\",\n      \"placeholder\": \"100\",\n      \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": \"Convert amount\"\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"POST /api/v1/tools/currency-converter/run\",\n  \"api\": {\n    \"id\": \"currency-converter\",\n    \"name\": \"Currency converter\",\n    \"category\": \"finance-tools\",\n    \"description\": \"Licensed rate feed, timestamp and source.\",\n    \"notes\": \"Fetches dated reference exchange rates from Frankfurter via the local server. Not a live trading quote; fees are excluded.\",\n    \"human_path\": \"/en/finance-tools/currency-converter/\",\n    \"method\": \"POST\",\n    \"endpoint\": \"/api/v1/tools/currency-converter/run\",\n    \"schema_url\": \"/api/v1/tools/currency-converter\",\n    \"input_schema\": {\n      \"type\": \"object\",\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"input\": {\n          \"type\": \"string\",\n          \"maxLength\": 1000000,\n          \"default\": \"\",\n          \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n        },\n        \"options\": {\n          \"type\": \"object\",\n          \"additionalProperties\": false,\n          \"properties\": {\n            \"source\": {\n              \"type\": \"string\",\n              \"description\": \"From currency\",\n              \"default\": \"EUR\"\n            },\n            \"target\": {\n              \"type\": \"string\",\n              \"description\": \"To currency\",\n              \"default\": \"USD\"\n            }\n          }\n        }\n      }\n    },\n    \"output_schema\": {\n      \"type\": \"object\",\n      \"required\": [\n        \"tool\",\n        \"result\"\n      ],\n      \"properties\": {\n        \"tool\": {\n          \"type\": \"string\"\n        },\n        \"result\": {\n          \"type\": \"object\",\n          \"required\": [\n            \"text\",\n            \"files\"\n          ],\n          \"properties\": {\n            \"text\": {\n              \"type\": [\n                \"string\",\n                \"null\"\n              ]\n            },\n            \"data\": {\n              \"description\": \"Parsed JSON when the textual result is JSON.\"\n            },\n            \"name\": {\n              \"type\": \"string\"\n            },\n            \"mime\": {\n              \"type\": \"string\"\n            },\n            \"files\": {\n              \"type\": \"array\",\n              \"items\": {\n                \"type\": \"object\",\n                \"required\": [\n                  \"name\",\n                  \"mime\",\n                  \"bytes\",\n                  \"base64\"\n                ],\n                \"properties\": {\n                  \"name\": {\n                    \"type\": \"string\"\n                  },\n                  \"mime\": {\n                    \"type\": \"string\"\n                  },\n                  \"bytes\": {\n                    \"type\": \"integer\"\n                  },\n                  \"base64\": {\n                    \"type\": \"string\",\n                    \"contentEncoding\": \"base64\"\n                  }\n                }\n              }\n            }\n          }\n        }\n      }\n    },\n    \"processing\": \"Server; contacts public network services\",\n    \"limits\": {\n      \"request_bytes\": 8388608,\n      \"input_characters\": 1000000,\n      \"files_bytes\": 5242880,\n      \"max_files\": 0,\n      \"timeout_seconds\": null\n    }\n  },\n  \"agent_processing\": \"Server; contacts public network services\",\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nLicensed rate feed, timestamp and source.\n\n## How to use Currency converter\n\n1. Enter amount in the input field.\n2. Review the settings, then choose Convert amount.\n3. Review the result, then use Copy result or a download link when available.\n\n## Working with currency converter\n\nFinancial calculators illustrate how inputs such as rate, term and contribution affect a result. They do not predict future market performance or determine which financial choice suits a particular person.\n\n## Common questions\n\n### Is a projected return guaranteed?\n\nNo. A calculation applies the supplied assumptions. Actual returns, fees and other conditions can differ.\n\n### Why do monthly and annual rates give different totals?\n\nThe conversion depends on compounding and on whether a rate is nominal or effective. Use the definition supplied with the financial product or dataset.\n"
}