Opencode drops Claude plugin
Opencode 1.3.0 removed its Claude Max plugin after legal pressure from Anthropic, highlighting growing legal friction between model vendors and open dev tooling (x.com). The release lauded OpenAI and GitHub for dev freedom even as the community reacted strongly to the takedown (x.com).
Developers reported a sudden, system-wide credential error on January 9, 2026 when Anthropic began rejecting Claude Pro/Max OAuth tokens for third‑party tools, producing an error message that said those credentials were “only authorized for use with Claude Code.” (byteiota.com) Multiple GitHub issue threads recorded users saying accounts were suspended after linking subscriptions to third‑party CLIs, with at least one thread documenting several users who said they lost access after upgrading to higher‑tier Claude plans. (github.com) OpenCode’s maintainers publicly acknowledged heated discussions with Anthropic staff and thanked other platform vendors for supporting alternative developer flows in their update posts. (techtwitter.com) Anthropic followed by updating Claude Code documentation to explicitly prohibit use of subscription OAuth tokens in third‑party tools and directed developers to pay‑per‑token API keys, a clarification published in February 2026. (theregister.com) The open‑source ecosystem responded by forking and re‑publishing authentication adapters: community forks such as thehugeman’s opencode‑anthropic‑auth‑community and several GitHub forks surfaced after maintainers removed or deprecated official packages on npm. (github.com) Independent projects and proxies emerged to restore workflow options—examples include OpenClaw’s Claude Max API proxy and NoeFabris’s Antigravity + Gemini OAuth plugin for OpenCode—both documented on GitHub as community workarounds. (docs.openclaw.ai) Coverage of the incident tracked developer fallout in real time: one report counted more than 147 GitHub reactions and widespread discussion on Hacker News as affected users debated refunds and plan cancellations for $100–$200 monthly Claude subscriptions. (byteiota.com)
