# DevKitty > DevKitty is a free, safety-guarded collection of 84 developer tools for DNS, networking, web and email inspection, APIs, data formatting, encoding, images, accessibility, frontend work and infrastructure configuration. Canonical site: https://devkitty.in/ ## Use DevKitty - [Interactive toolbox](https://devkitty.in/): Human-facing interface with all tool categories. - [OpenAPI description](https://devkitty.in/openapi.json): Machine-readable contract for server-backed tools. - [Agent usage guide](https://devkitty.in/agent-guide.md): Capabilities, constraints and safe usage examples. ## Important constraints - Use network tools only on systems you own or are authorized to test. - Private, loopback, link-local, reserved and other non-public destinations are blocked. - Requests are rate-limited, bounded by short timeouts and limited in scan size. - Browser-local tools do not have HTTP API endpoints. - Never send production credentials, secrets or sensitive personal data to the public service.