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Kimi K2.5 Free OpenCode Zen throws an error #11591

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Description

@vladbesson

Description

An error message keeps popping up when attempting to use the Kimi K2.5 Free OpenCode Zen model:

JSON Schema not supported: could not understand the instance `{'description': 'Value to set. Must match field type from schema. For references: {_type: "reference", _ref: "id"}. For blocks: include _type.'}`.

Plugins

No response

OpenCode version

1.1.48

Steps to reproduce

  1. run opencode
  2. choose Kimi K2.5 Free OpenCode Zen
  3. choose Plan mode
  4. ask single question
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Operating System

macOS 26.2

Terminal

kitty

Activity

  1. github-actions commented on Feb 1, 2026

    @github-actions
    Contributor

    This issue might be a duplicate of existing issues. Please check:

    Feel free to ignore if none of these address your specific case.

  2. pjosdev commented on Feb 2, 2026

    @pjosdev

    Same issue when the provider is OpenRouter.

    EDIT: I disabled Sanity CMS MCP and issue is gone.

  3. github-actions commented on Apr 4, 2026

    @github-actions
    Contributor

    To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.

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