Creator — Claude Dev-Tool Suite_

Designing and shipping a suite of four browser-only developer tools for the Anthropic Claude API — claudoscope (live x-ray of prompt caching and token economics), agent-replay (cinematic timeline replay of agent tool-calling loops), prompt-lab (side-by-side A/B testing of prompts and models), tool-lab (interactive tool-use sandbox with hand-mocked responses). All BYOK, no backend, ~150-line hand-rolled SSE client shared across the suite. Five long-form write-ups on ferhatatagun.com and Medium documenting the design decisions, prompt-caching economics, agent debugging, and prompt iteration methodology.