opencode-glm-clipboard

OpenCode plugin that fixes pasted clipboard image flow for GLM models.

When a clipboard image arrives as a data:image/... part, this plugin:

• Saves the image to a temporary local file
• Rewrites the message part to text containing the local file path
• Keeps paste-first UX (Cmd+V) without manual file save steps
• Cleans old temp files automatically (24h default)

Why

Some GLM model routes in OpenCode reject direct image input, even when MCP image tools are available. This plugin provides a transparent fallback so the model can still analyze pasted images through tools using a local file path.

Install

npx -y opencode-glm-clipboard@latest

Then restart OpenCode.

Uninstall

npx -y opencode-glm-clipboard@latest --uninstall

Local development

npm install
npm run build

Release flow

Recommended release order:

1. Bump version in package.json
2. Commit and push main
3. Create and push tag vX.Y.Z
4. Publish GitHub Release for that tag
5. GitHub Actions publishes to npm automatically

This repository includes a workflow that publishes to npm when a GitHub Release is published.

Recommended setup: npm Trusted Publishing (OIDC), no long-lived NPM_TOKEN required.

Add local plugin path in your OpenCode config if testing without publish:

{
  "plugin": [
    "file:///absolute/path/to/opencode-glm-clipboard/dist/index.js"
  ]
}

Configuration

• OPENCODE_GLM_CLIPBOARD_MAX_AGE_HOURS
  • Optional
  • Default: 24
  • Controls temp image cleanup threshold

Temp directory used:

• ${TMPDIR:-/tmp}/opencode-pasted-images

Compatibility

• Acts on models from providers that don't declare native image input support:
  • CrofAI provider (e.g. deepseek-v4-pro)
  • zai-coding-plan provider (e.g. claude-sonnet-4)
  • Legacy glm-* model IDs
• Leaves other providers/models untouched

License

MIT