mcp-installer
Find, install, and configure MCP servers. Use proactively for MCP discovery, OAuth setup, env vars, stdio vs SSE transport, or troubleshooting MCP connections. Examples: - user: "Add the filesystem MCP server" → read server file, add to mcpServers in opencode.json, verify transport type - user: "How do I use MCP with GitHub?" → check catalog, install @modelcontextprotocol/server-github, configure OAuth token - user: "MCP not connecting" → check transport type (stdio/SSE), verify args/command, check env vars are passed - user: "What MCPs are available?" → run list_mcps.py, show catalog with auth types and install commands
What this skill does
# MCP Installer
Find, install, and configure MCP servers for OpenCode.
<workflow>
## 1. Search for MCP Server
**Check local catalog first** (quick check for already-documented MCPs):
```bash
python3 ~/.config/opencode/skill/mcp-installer/scripts/list_mcps.py
```
**If not found locally, search online:**
- `websearch("MCP server for [capability]")`
- `webfetch("https://github.com/modelcontextprotocol/servers")`
- Check npm: `@modelcontextprotocol/server-*`
- Check the MCP spec repo: https://github.com/modelcontextprotocol
## 2. Read MCP Details
For relevant matches, read the full MCP file:
```
references/mcps/<name>.md
```
Contains installation config, setup, features, and links.
## 3. Configure
Add the MCP config to user's `opencode.json`.
## 4. Document New MCPs
If you discovered a new MCP server online, you MUST document it for future reference in `references/mcps/<name>.md` using the template below.
## 5. Setup (if needed)
- OAuth: Run `opencode mcp auth <server-name>`
- API keys: Set environment variables
- Other: Follow MCP-specific setup steps
</workflow>
<question_tool>
**Batching:** Use the `question` tool for 2+ related questions. Single questions → plain text.
**Syntax:** `header` ≤12 chars, `label` 1-5 words, add "(Recommended)" to default.
When to ask: Multiple MCPs match the need, or setup requires OAuth/API keys.
</question_tool>
<configuration>
## Local MCP
```jsonc
{
"mcp": {
"name": {
"type": "local",
"command": ["npx", "-y", "@package/name"]
}
}
}
```
## Remote MCP
```jsonc
{
"mcp": {
"name": {
"type": "remote",
"url": "https://example.com/mcp"
}
}
}
```
## MCP Tool Management
MCPs expose tools. Control via the `permission` section using the tool name (usually the MCP name):
**Global/Agent Permission:**
```jsonc
{
"permission": {
"my-mcp": "deny", // Disable all tools for this MCP
"my-mcp*": "deny" // Wildcard support
}
}
```
**Pattern-based control:**
```jsonc
{
"permission": {
"my-mcp": {
"safe_tool": "allow",
"risky_tool": "ask",
"*": "deny"
}
}
}
```
## Legacy Configuration
Agents may occasionally work on legacy projects using outdated configuration fields (e.g., `tools:`). You MUST correct these to the modern `permission:` system when encountered.
## OAuth
Remote MCPs with OAuth auto-authenticate:
```bash
opencode mcp auth <server-name>
```
Check status: `opencode mcp list`
</configuration>
<reference_files>
| You need... | Read this file |
|-------------|----------------|
| All config options (local, remote, oauth, env vars) | `references/configuration.md` |
| Common MCP server examples | `references/examples.md` |
| Troubleshooting issues | `references/troubleshooting.md` |
**Note:** The local catalog (`list_mcps.py`) is a cache of discovered MCPs, not a complete list. SHOULD always search online if you don't find a match locally.
</reference_files>
<documenting_new_mcps>
When discovering new MCP servers, you MUST document them:
**Location:** `references/mcps/<name>.md`
**Template:**
```markdown
---
name: mcp-name
url: https://github.com/org/repo
type: local|remote
auth: oauth|api-key|none
description: One-line description
tags: [tag1, tag2]
---
# Display Name
Brief description.
## Installation
\`\`\`jsonc
{
"mcp": {
"name": {
"type": "remote",
"url": "https://example.com/mcp"
}
}
}
\`\`\`
## Setup
Steps for auth, env vars, etc.
## Features
- Feature 1
- Feature 2
## Links
- [GitHub](url)
```
Then run: `python3 scripts/list_mcps.py` to verify.
## Frontmatter Fields
| Field | Required | Purpose |
|-------|----------|---------|
| `name` | Yes | MCP identifier (key in config) |
| `url` | No | Source URL |
| `type` | Yes | `local` or `remote` |
| `auth` | Yes | `oauth`, `api-key`, or `none` |
| `description` | Yes | One-liner for catalog |
| `tags` | No | Array of category tags |
</documenting_new_mcps>
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