OpenCode: OpenCode LSP Integration

Last updated: 2026-08-31

--- title: OpenCode LSP Server Configuration description: Configure LSP servers for IDE-level code analysis capabilities order: 16 lang: en

LSP (Language Server Protocol) gives OpenCode IDE-level code analysis capabilities.

1. What You Will Learn

LSP purpose and principles
LSP configuration in OpenCode
Supported language servers
Enabling experimental features

2. What is LSP

LSP provides: code completion, go-to-definition, find references, rename symbol, diagnostics, hover info.

3. Enabling LSP in OpenCode

BASH

export OPENCODE_EXPERIMENTAL_LSP_TOOL=true

Configure in opencode.json:

JSON

{
  "lsp": {
    "typescript": {
      "command": "typescript-language-server",
      "args": ["--stdio"]
    },
    "python": {
      "command": "pylsp",
      "args": []
    }
  }
}

4. Common Language Servers

Language	Server	Install
TypeScript/JS	typescript-language-server	`npm i -g typescript-language-server typescript`
Python	pylsp / pyright	`pip install python-lsp-server` / `npm i -g pyright`
Go	gopls	`go install golang.org/x/tools/gopls@latest`
Rust	rust-analyzer	`rustup component add rust-analyzer`
C/C++	clangd	System package manager

5. Usage

After enabling, AI uses LSP for precise analysis:

TEXT 📖 Display only

Find all references to the auth function

❓ FAQ

Q Is LSP required?

A No. Without LSP, OpenCode still analyzes code via file reading and search. LSP adds more precise analysis (go-to-definition, find references).

Q LSP server slow to start?

A Large projects need indexing on first start. Pre-start the LSP server—OpenCode reuses existing instances.

📖 Summary

LSP provides IDE-level code analysis
Enable via OPENCODE_EXPERIMENTAL_LSP_TOOL
Configure servers in opencode.json lsp field
Common languages: TS, Python, Go, Rust all supported
Enhancement feature—works without it

📝 Exercises

Basic: Install an LSP server for your primary language.
Intermediate: Configure LSP in opencode.json for go-to-definition and find references.
Advanced: Compare code analysis accuracy with and without LSP.

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