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Access all Toolsy tools programmatically via the REST API. Free tools are available without authentication. Premium tools require an API key and credit balance.
Pass your API key as a Bearer token in the Authorization header. Required for premium tools.
// Request header
Authorization: Bearer <your-api-key>
/api/v1/tools/{slug}Returns tool metadata including name, description, tier, and credit cost.
Response:
{
"slug": "json-formatter",
"name": "JSON Formatter & Validator",
"tier": "free",
"creditCost": 0,
"category": "developer"
}/api/v1/tools/{slug}Execute a tool with the given input. Input schema varies per tool.
Example — JSON Formatter:
POST /api/v1/tools/json-formatter
Content-Type: application/json
{
"input": "{\"name\":\"Alice\",\"age\":30}",
"mode": "format",
"indent": 2
}Response:
{
"output": "{\n \"name\": \"Alice\",\n \"age\": 30\n}",
"meta": {
"tool": "json-formatter",
"processingTime": 12
}
}Error Response:
{
"error": "INSUFFICIENT_CREDITS",
"message": "You need 5 credits to use this tool.",
"balance": 2,
"cost": 5
}Free tools (anonymous)
10 requests / day
Free tools (authenticated)
50 requests / day
Premium tools
No rate limit (credit-based)
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