Converts any text string to lowercase letters. Access via MCP in Cursor or Windsurf for instant text transformation, or call GET /v1/string/lowercase as a REST API. Perfect for normalizing user input like "Hello World!" → "hello world!". Returns deterministic results every time, unlike LLM text processing which can vary.
curl "https://tinyfn.io/v1/string/lowercase" \
-H "X-API-Key: YOUR_API_KEY"const response = await fetch('https://tinyfn.io/v1/string/lowercase', {
headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await response.json();
console.log(data);import requests
response = requests.get('https://tinyfn.io/v1/string/lowercase',
headers={'X-API-Key': 'YOUR_API_KEY'})
data = response.json()
print(data)Connect your AI agent (Claude, Cursor, Windsurf, etc.) to TinyFn's string tools:
{
"mcpServers": {
"tinyfn-string": {
"url": "https://tinyfn.io/mcp/string",
"headers": {
"X-API-Key": "YOUR_API_KEY"
}
}
}
}Call the lowercase tool through any MCP-enabled editor like Cursor or Claude Code. Pass your text as input and get the lowercased result instantly.
Use GET /v1/string/lowercase with your text as a parameter. Returns JSON with the converted lowercase string.
Yes, it properly handles Unicode characters including accented letters, converting É to é, maintaining proper linguistic lowercase rules.
AI models can inconsistently handle edge cases or add unwanted formatting. TinyFn gives deterministic, spec-compliant lowercase conversion every time.
The tool processes one string at a time, but you can call it multiple times in sequence for batch operations through MCP or REST API.