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Bug: /mcp toggling doesn't persist changes to opencode.json #17799
Description
Bug Description
Using /mcp command to enable/disable MCP servers doesn't persist changes to opencode.json. The toggle appears to work in the UI but after restarting OpenCode, the changes are lost.
Steps to Reproduce
- Run OpenCode v1.2.27
- Use
/mcpcommand - Toggle any MCP server (e.g., disable "excel")
- Check
~/.config/opencode/opencode.json- theenabledfield is NOT updated - Restart OpenCode - MCP server is still running
Expected Behavior
Changes made via /mcp should be saved to opencode.json
Additional Context
- OpenCode version: 1.2.27
- This issue was mentioned in bug: mcp.json resets to default after update, causing
timeserver to fail (npx used instead of uvx) #17442 but doesn't seem to be fully fixed - Manually editing
opencode.jsonworks correctly
Workaround
Manually edit opencode.json to enable/disable MCP servers
Reacted by Ariane Emory
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github-actions commentedon Mar 16, 2026
This issue might be a duplicate of an existing issue. Please check:
fix: persist MCP toggle changes to opencode.json
fix: correct type reference from McpConfigured to Config.Mcp
ariane-emory commentedon Mar 16, 2026
IMHO,
opencode.jsoneis a configuration file, not a state file, and as such nothing ought be persisted to it. Any persistence should be to state files.