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MCP, LSP & Plugin Reference

Complete reference of all AI infrastructure configured by OpenCode Initializer.

MCP Servers (22 local + 2 remote)

MCP (Model Context Protocol) servers extend OpenCode with external tools and data sources.

Local Servers

Server Package Category Description
filesystem @modelcontextprotocol/server-filesystem Core File system operations — read, write, list, search
git mcp-server-git Core Git operations — log, diff, branch, commit
github @modelcontextprotocol/server-github Platform GitHub API — repos, issues, PRs, search
gitlab mcp-server-gitlab Platform GitLab API mirror of GitHub server
memory @modelcontextprotocol/server-memory AI Knowledge graph with persistent memory
sequential-thinking @modelcontextprotocol/server-sequential-thinking AI Chain-of-thought reasoning breakdown
memorylayer @scitrera/memorylayer-mcp-server AI Advanced memory with session persistence
fetch mcp-server-fetch Network HTTP requests, web content retrieval
time mcp-server-time Utility Timezone conversion, current time
sqlite mcp-server-sqlite Data SQLite database query and management
postgres @modelcontextprotocol/server-postgres Data PostgreSQL database access (requires token)
redis @modelcontextprotocol/server-redis Data Redis key-value store operations
playwright @playwright/mcp Browser Full browser automation (Chromium)
agent-browser agent-browser-mcp-server Browser Lightweight browser control for web tasks
chrome-devtools chrome-devtools-mcp Browser Chrome DevTools Protocol access
brave-search brave-search-mcp Search Web search via Brave Search API
context7 context7-mcp Search Code documentation search
context7-official @upstash/context7-mcp Search Official Context7 library documentation
notion @notionhq/notion-mcp-server Platform Notion workspace integration
agentic-tools @pimzino/agentic-tools-mcp Agent Task management, project planning
codegraph codegraph-mcp Analysis Code dependency and call graph analysis
loopsense @loopsense/mcp Analysis Code quality and best practices

Remote Servers

Server Package Category Description
sentry @sentry/mcp Monitoring Error tracking and performance monitoring
grep grep-mcp Utility Content search across codebase

Enabling/Disabling MCP Servers

MCP servers are defined in opencode.json under mcpServers. Each server can be:

{
  "mcpServers": {
    "filesystem": {
      "type": "local",
      "command": ["/home/user/.bun/bin/mcp-server-filesystem", "/path/to/project"],
      "enabled": true
    }
  }
}

Platform-specific servers (GitHub, GitLab, Postgres, Google Maps) are conditionally enabled — only if the corresponding API key is provided via --github-token, --gitlab-token, etc.

Cold Start Performance

Most MCP servers use absolute Bun binary paths (~/.bun/bin/mcp-server-*) instead of npx -y. This means:

  • 0.5s cold start vs 5-15s with npx
  • No network required after install
  • Survives npm cache clears

LSP Servers (12)

LSP (Language Server Protocol) servers provide intelligent code analysis for OpenCode.

Server Language Features
gopls Go Autocomplete, jump-to-def, refactor, diagnostics
rust-analyzer Rust Full IDE experience, borrow checker integration
tsserver TypeScript/JavaScript Type checking, autocomplete, quick fixes
pyright Python Static type checking, autocomplete, diagnostics
omnisharp C# / .NET Full C# language support
yaml-ls YAML Schema validation, autocomplete, formatting
marksman Markdown Link validation, TOC generation, autocomplete
taplo TOML Formatting, validation, autocomplete
lua-ls Lua Autocomplete, diagnostics, annotations
zls Zig Full Zig language support
bash-ls Bash/Shell Shell script analysis, diagnostics
dockerfile-ls Dockerfile Syntax highlighting, validation, autocomplete

Architecture-dependent LSPs

Server amd64 arm64
gopls ✅ ✅
rust-analyzer ✅ ✅
omnisharp ✅ x64 ✅ arm64
zls ✅ x86_64 ✅ aarch64

The installer auto-detects CPU architecture and downloads the correct binary.

Plugins (18)

OpenCode plugins extend the assistant's capabilities.

Plugin Description
codegraph Code dependency and call graph analysis in-editor
dcp Damage Control Protocol — prevent harmful actions, context compression
auto-fallback Automatic provider fallback on errors
goal-mode Structured goal-driven development with contracts
swarm Multi-agent coordination and review workflow
vibeguard Quality gate before completion
devcontainers Dev container workspace management
worktree Git worktree isolation for feature branches
scheduler Background job scheduling via systemd/launchd
background-agents Async background agent delegation
goal-plugin Goal-oriented task management and tracking
conductor Development track orchestration and planning
zellij-namer Automatic Zellij session naming
morph-plugin Context-aware model morphing and adaptation
supermemory Persistent cross-session memory for agents
websearch-cited Grounded web search with inline citations
firecrawl Web page crawling and content extraction
plugin-otel OpenTelemetry observability and tracing

Configuration Reference

MCP Server Command Formats

// Local server (bun binary — fast cold start)
{
  "type": "local",
  "command": ["/home/user/.bun/bin/mcp-server-filesystem", "/project"]
}

// Local server (npx fallback — when bun binary missing)
{
  "type": "local",
  "command": ["npx", "-y", "@modelcontextprotocol/server-filesystem", "/project"]
}

// Remote server (HTTP)
{
  "type": "remote",
  "url": "https://mcp.example.com/sse"
}

Plugin Format

{
  "plugin": [
    "opencode-codegraph",
    ["opencode-dcp", { "compress": { "enabled": true } }],
    "opencode-auto-fallback"
  ]
}

Adding Custom MCP/LSP/Plugin

  1. MCP Server: Add to opencode.json -> mcpServers
  2. LSP Server: Add to opencode.json -> lsp
  3. Plugin: Add to opencode.json -> plugin array

For system-wide installation, modify src/lib/12-mcp-lsp.sh and run bash setup.sh --reinit.

See also: - Architecture — C4 diagrams and module layout - Reference — CLI reference and opencode.json schema - User Guide — daily usage of MCP and LSP - Advanced Guide — custom MCP/LSP configuration