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About capsul

capsul is a command-line utility that reduces the number of tokens sent to large language models such as Claude and Codex. It works by analyzing a codebase and forwarding only the relevant lines of code required for a specific task, rather than the entire repository. This approach decreases the amount of context transmitted to the model, which can extend the effective capacity of existing subscription plans. The tool is installed via npm and operates as a local process that processes files before they are passed to the LLM API. It supports multiple programming languages and integrates with existing workflows through a simple command-line interface. capsul is positioned as a solution for developers who frequently interact with LLMs and want to optimize token usage without changing their current tools or subscriptions.

Key features

  • CLI-based installation and operation
  • Repository file filtering
  • Multi-language support
  • Token reduction benchmarking
  • Cache-weighted input measurement
  • Integration with existing LLM workflows
  • Local processing of code files
  • Command-line argument parsing

Use cases

  • Optimizing token usage for LLM-powered code reviews
  • Reducing API costs when querying large codebases
  • Improving response times for LLM-based development tasks

Pros

  • Reduces token count sent to LLMs by up to 80%
  • Works with multiple LLM providers including Claude and Codex
  • Integrates into existing workflows via CLI
  • Supports multiple programming languages
  • Local processing without cloud dependency

Cons

  • Requires installation via npm
  • Limited to command-line usage
  • No free tier or open-source version mentioned

Frequently asked questions about capsul

What is capsul and what does it do?

capsul is a command-line utility that reduces the number of tokens sent to large language models like Claude and Codex by analyzing a codebase and forwarding only the relevant lines of code required for a specific task. It minimizes the context transmitted to the model, making existing subscription plans more efficient.

Who is capsul designed for?

capsul is designed for developers who frequently interact with LLMs and want to optimize token usage without changing their current tools or subscriptions. It is particularly useful for those working with large codebases or using models with token limits.

How does capsul integrate with existing workflows?

capsul integrates with existing workflows through a simple command-line interface. It is installed via npm as a local process that processes files before they are passed to the LLM API, requiring no changes to the user's current setup.

What programming languages does capsul support?

capsul supports multiple programming languages, allowing users to send only the relevant lines of code required for a task, regardless of the language used in the codebase.

How do I get started with capsul?

To get started with capsul, install it via npm using the command `npm i -g @penra/capsul`. Once installed, it can be used as a command-line tool to process files before sending them to an LLM API.

Does capsul work with specific LLM models?

Yes, capsul works with models such as Claude and Codex, reducing the token count sent to these models by sending only the relevant lines of code required for a task.

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