      📄 main.go
      Ln 12, Col 12
    
11
12
13

        func main() {

          r := gin.Default()  ->  what's the definition?

          r.Run()

      ⚡ MCP PROTOCOL TRACE
    
>> OUT (Request)
        call_tool: go_definition

        args: { "line": 12, "column": 12 }
      
<< IN (Response)
        result: {

          "summary": "func Default() *Engine",

          "location": { "file": ".../gin.go", "line": 142 }

        }

Stop LLMs guessing Go types.

gopls-mcp replaces expensive text search with compiler-backed precision, saving tokens, cutting latency, and preserving your agent’s critical attention span.

Equip AI Agent Case Study

Quick Install

Claude Code

/plugin marketplace add https://github.com/xieyuschen/gopls-mcp.git
/plugin install gopls-mcp

Codex CLI

codex plugin marketplace add https://github.com/xieyuschen/gopls-mcp.git
codex plugin add gopls-mcp

The plugin installs the binary, registers the MCP server, and injects the tool-routing rules.

MCP Provides Accurate Context to LLM

gopls-mcp offers fast and semantic accurate codebase analysis, perserves LLM attention and save your tokens.

go_symbol_references

user.go

Ln 18

18 func (u *User) Save() error

MCP PROTOCOL TRACE

>> OUT (Request)

call_tool: go_symbol_references
locator: { symbol_name: "Save", context_file: "user.go" }

<< IN (Response)

references: [

"login.go:42", "handler.go:15", "service.go:78"

]

go_definition

main.go

Ln 12

12 sum := Add(1, 2)

MCP PROTOCOL TRACE

>> OUT (Request)

call_tool: go_definition
locator: { symbol_name: "Add", context_file: "main.go" }

<< IN (Response)

{ signature: "func Add(a, b int) int", file: "math.go:15" }