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Castov
100% Client-Side PrivacyAll prompt templates, token calculators, and model configs run completely in your browser. Zero server telemetry or API key leakage.

Repo Token Estimator

Estimate token counts and context footprint for entire codebases to determine feasibility for 128k, 200k, and 1M context window LLMs.

Output Console

This generator is not live yet. It will run on a real model using your own API key (BYOK).

How to use the Repo Token Estimator

Calculate whether your repository fits within modern frontier model context windows, accounting for file types, exclusions, and overhead.

Why use a dedicated repo token estimator?

As AI developer tools become more complex, writing boilerplate code, complex system prompts, or schema definitions manually is error-prone. This tool guarantees structured, predictable output tailored to your exact stack without the hassle of manual formatting.