customize-opencode skill: MCP local config uses `env` but schema requires `environment`

[VictorBlancoTech]

Bug

The built-in customize-opencode skill documents the field for env vars in local MCP servers as env, but the actual JSON Schema (https://opencode.ai/config.json, $defs/McpLocalConfig) requires environment`.

Since McpLocalConfig has additionalProperties: false, the env key is silently ignored. Result: the spawned MCP process starts without the documented env vars, which in many servers causes an immediate crash and the agent reports the opaque error MCP error -32000: Connection closed.

Where the skill is wrong

The skill body (shown to the model when invoked) contains this example:

"mcp": {
  "playwright": {
    "type": "local",
    "command": ["npx", "-y", "@playwright/mcp"],
    "enabled": true,
    "env": { "BROWSER": "chromium" }   // <- wrong key
  }
}

And in the prose section "MCP servers":

"mcp": {
  "playwright": {
    "type": "local",
    "command": ["npx", "-y", "@playwright/mcp"],
    "enabled": true,
    "env": { "BROWSER": "chromium" }   // <- wrong key
  },
  ...
}

The field name in both should be environment, per the published schema.

Reproduction

1. Configure a local MCP server using the skill's example shape:

"mcp": {
  "google-calendar": {
    "type": "local",
    "command": ["/opt/homebrew/bin/google-calendar-mcp"],
    "enabled": true,
    "env": { "GOOGLE_OAUTH_CREDENTIALS": "/path/to/keys.json" }
  }
}

2. opencode mcp list → ✗ failed / MCP error -32000: Connection closed.
3. Change env → environment → ✓ connected.

Suggested fix

Replace env with environment in both customize-opencode skill examples. Similar in spirit to the already-fixed #29611 — the skill is the primary source of truth models see, so any drift from the schema propagates silently into broken configs.

Environment

• opencode 1.18.7
• macOS (darwin arm64)
• Discovered while wiring @cocal/google-calendar-mcp — works fine after correcting the key.

[github-actions]

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

• [BUG]: customize-opencode skill example for local MCP uses env but schema/runtime expect environment #35860: Same bug — customize-opencode skill MCP local config uses env but schema/runtime expect environment
• OpenCode 1.17.16 drops mcp.<name>.env from resolved config, causing MCP servers to miss environment variables #36434: Related — OpenCode drops mcp.<name>.env from resolved config, causing MCP servers to miss environment variables

[OpeOginni]

Thanks for the issue man, got a fix in