A new repository called Banned by Anthropic has appeared on Hacker News, offering a curated list of APIs, libraries, and platforms that Anthropic’s language‑model policy currently blocks. The site aggregates community reports and official statements, giving engineers a single reference point for tools that may trigger usage restrictions. Its launch follows growing scrutiny over AI providers’ content filters, for early adopters seeking compliance clarity today.

Developers integrating Anthropic models into products often face ambiguous error messages when a request violates the provider’s safety guardrails. By cataloguing the offending services—ranging from code‑generation SDKs to third‑party data‑scraping utilities—the list helps teams audit dependencies before deployment. Contributors update entries through a public GitHub repo, ensuring the information stays current as policies evolve. It also flags edge‑case scenarios where moderation meets regional rules.

The community‑driven approach reflects a broader trend of open‑source tooling around AI compliance, giving engineers practical guidance without waiting for formal documentation. For anyone building on Anthropic’s API, consulting the Banned by Anthropic site before adding new libraries can prevent costly downtime and policy violations. Teams that ignore the list often scramble to reverse blocks, wasting engineering cycles.