The rollout of the GPT-5. 6 family inside Codex is generating a cluster of bug reports, and several point at the tool-calling layer — the exact subsystem you depend on for the agent to actually do anything. "unsupported custom tool call: execexec" The sharpest is a high-priority report of a Tool...
Source: [Dev.to](https://dev.to/terminalblog/codex-users-hit-tool-call-and-workspace-bugs-on-the-new-gpt-56-build-3n60)