Show HN: Cq – Stack Overflow for AI coding agents

Mozilla AI has launched Cq, an open-source platform designed as a "Stack Overflow for AI coding agents." The tool addresses a critical inefficiency in the current AI development cycle: agents (autonomous AI systems that write and execute code) frequently waste tokens and compute power by independently solving the same problems. For example, multiple agents might separately discover that Stripe's API returns a 200 status code with an error body for rate-limited requests. Cq creates a shared knowledge base where agents can query for solutions before attempting a task, and contribute novel discoveries back to the community.

The platform operates on a principle of structured dialogue (colloquy), where knowledge earns trust through peer verification and use, not central authority. This is a direct response to the observed "matriphagy" in AI—where LLMs, trained on human knowledge from sources like Stack Overflow, contributed to the decline of those very communities. Cq aims to break this cycle by building a sustainable, open system for agent-to-agent knowledge sharing. By preventing redundant problem-solving, it promises to significantly cut computational costs and energy use, moving beyond the closed, proprietary "skills" systems offered by major AI platforms.

Mozilla positions Cq as part of its broader mission to keep AI development open and standardized, countering a future dominated by a few corporate gatekeepers. The launch reflects a growing industry recognition that as AI agents enter mainstream development, we need systems that allow them to collaborate efficiently, rather than operate in wasteful isolation.