Invert case | agent view
The same page content and links, with explicit tool capabilities. Tools marked with an API can run directly through HTTP. Other tools require the browser interface or are not connected yet.
Tool capabilities
{
"id": "invert-case",
"category": "text-tools",
"built": true,
"requirements": "Invert letter case without altering punctuation; preview mappings that change length.",
"implementation": {
"fields": [],
"experience": {
"automatic": true,
"single": false,
"label": "Your text",
"placeholder": "Hello world!",
"help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
"action": null
},
"mode": "automatic",
"interactive": false
},
"execution": "POST /api/v1/tools/invert-case/run",
"api": {
"id": "invert-case",
"name": "Invert case",
"category": "text-tools",
"description": "Swap uppercase letters to lowercase and back.",
"notes": "",
"human_path": "/en/text-tools/invert-case/",
"method": "POST",
"endpoint": "/api/v1/tools/invert-case/run",
"schema_url": "/api/v1/tools/invert-case",
"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": {}
}
}
},
"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; same transformation code as browser tools",
"limits": {
"request_bytes": 8388608,
"input_characters": 1000000,
"files_bytes": 5242880,
"max_files": 0,
"timeout_seconds": 12
}
},
"agent_processing": "Server; same transformation code as browser tools",
"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"
}
}Page guide
Swap uppercase letters to lowercase and back.
How to use Invert case
- Enter your text in the input field.
- The result updates as you type. Adjust the available settings if needed.
- Review the result, then use Copy result or a download link when available.
What to expect
Swap uppercase letters to lowercase and back. Each letter changes case independently. Numbers, punctuation and whitespace stay in place. Unicode case mappings can change the length of the result.
Try a small example
Hello WORLD