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v2.1

Responses Fallbacks, MCP Images, & Reliability Fixes

June 26, 2026

v2.1 is a focused reliability release for provider compatibility, multimodal MCP output, streamed tool parsing, message replay, backups, and skills tooling.

🧠 Responses & Provider Compatibility

  • Sharper Responses fallback — OpenAI-compatible providers that reject unsupported Responses payloads now retry through Chat Completions without treating every bad request as an unsupported endpoint.
  • Normalized tool schemas — Function parameter schemas now include an explicit properties object before Responses requests are sent, keeping permissive prompt and MCP schemas compatible with stricter validators.
  • Plain Responses completions render cleanly — Plain-text final answers in Responses mode now finish the active log entry instead of leaving the WebUI stuck on the generating state.

🔌 MCP Images & Tool Calls

  • MCP image artifacts — MCP image and image-resource payloads are saved as scoped artifact files, so tool text and attachment metadata can return real file paths while images remain visible to the model.
  • Streamed tool JSON extraction improved — The parser now prefers complete roots that normalize as tool requests, reducing false misformat warnings when streamed output includes leading prose or incidental JSON.
  • JSON-string parallel tool calls accepted — Providers that stringify tool_calls inside tool_args are decoded and validated through the normal parallel-tool path.

🖥️ WebUI Replay & Large Backups

  • Message replay ordering fixed — Full log snapshots are treated as authoritative replays, clearing and rendering messages in backend order when sync starts from log 0.
  • Large backups complete reliably — Backup creation and restore cleanup no longer stop file pattern scans at 50,000 entries, while previews and dry runs stay bounded for responsiveness.

🛠️ Skills Tooling Compatibility

  • Friendlier skills commands — Empty skills_tool calls now default to listing skills, and the legacy method parameter still works as a deprecated alias for action.
  • Actionable skill frontmatter warnings — Malformed SKILL.md frontmatter now reports a once-per-path warning with line numbers instead of silently skipping the skill.