Open Source Anthropic Tools
This area covers software for working with conversational language models through hosted APIs and related development workflows. These tools help developers build AI features, automate coding and other tasks, connect models to external services, and manage prompts, context, and sensitive data. They can also make it easier to switch between model providers or adapt existing applications to different backends.
Open source options include client libraries, command-line tools, plugins, testing frameworks, and proxies for routing or filtering requests. When choosing one, check its license, maintenance activity, supported models and interfaces, security practices, and runtime requirements. Consider how well it fits your existing stack and whether it offers clear setup guidance. These tools can be useful to developers, teams building AI products, and people exploring model-assisted workflows.
3 repositories · updated September 28, 2026
Router: Optimize AI Model Selection and Costs for Agentic Systems
The Weave-OS Router is an intelligent model router for agentic systems, optimizing AI model selection for every request. It acts as a drop-in proxy for major AI providers, routing prompts to the most suitable model in under 50ms. This solution helps users significantly cut costs, often by 40-70%, simply by changing an endpoint.
Maskit: Local Privacy Gateway for LLMs and AI Tools
Maskit is a local privacy desensitization gateway engineered for large language models and AI tools. It automatically masks sensitive data in requests sent to AI services and then seamlessly restores it in streaming responses, ensuring private information remains local. This innovative solution supports various AI assistants like Cursor and Claude Code, along with any tool offering a configurable Base URL.
ctx-gate: LLM Context Gateway for Efficient Token Usage
ctx-gate is an LLM-agnostic context optimization proxy that reduces token consumption in AI interactions. It intelligently prunes conversation history and tool outputs, ensuring critical facts are retained without altering your workflow. Compatible with Anthropic and OpenAI APIs, ctx-gate helps developers manage LLM costs and maintain prompt fidelity.