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gopls-mcp MCP Server

Semantic code analysis for Go using gopls - language-aware navigation, definitions, references

Publisher claimed. No tool list reported, and Pod has not connected to this server.

Status

Pod has not dialled gopls-mcp yet, so everything on this page is what its publisher reported rather than what we observed. Registries describe servers; they do not connect to them. Until a check runs, treat the tool list below as a claim.

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Known issues

10 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 7.

Most discussed

Lack benchmark and examples to demonstrate gopls-mcp is helpful in claude code

I am using this tools but was not sure how effective it was so I created and ran a benchmark

Image

I have provided 5 agents with 4 real-world problems on a rather large Golangs code base, to anlyze a 5 differetn bug. after each run I analyzed and improved the agent instruction on how to use the MCP and let the test rerung with new instruction. I was expecting the toke

Read the thread · 2026-06-21 · closed · outside contributor · 2 comments

Add --directory-filters CLI flag to avoid requiring a separate config file

Problem

When configuring gopls-mcp as an MCP server in .mcp.json, users currently need two files to set directoryFilters:

  1. .mcp.json — to register the MCP server with -config pointing to an external file
  2. .gopls-mcp.json — the config file itself, containing workdir and gopls.directoryFilters
// .mcp.json
{
  "mcpServers": {
    "gopls-mcp": {
      "command": "gopls-mcp",
      "args": ["-config", "/path/to/.gopls-mcp.json"]
    }
  }
}

// .gopl

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/12) · 2026-02-06 · closed · outside contributor · 1 comment

### go_implementation returns line 0 for symbols in dependency packages

When an implementation lives in a dependency package, the result has line: 0, making it impossible to jump to the source.

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/30) · 2026-03-04 · closed · 0 comments

### context_file error message lacks actionable guidance

When context_file points to an invalid location (e.g. a file outside the workspace, or a file that doesn't reference the target symbol), the error is just symbol 'X' not found in file — no hint on how to fix it.

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/29) · 2026-03-04 · open · 0 comments

### feature: respect gopls setting inside .vscode/settings.json

Right now, gopls-mcp defines a flexible command to setup configuration files but It doesn't ellaborate with IDE gopls config well.
For example, when user has a build constrain, they have had to set up it extra inside gopls-mcp.

gopls-mcp should be able to read the `.vscode/settings.json` and respects the gopls config for local project.

Since global config of gopls may not make sense for gopls, which should be per project, we don't support it in this issue.

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/27) · 2026-03-02 · closed · 0 comments

### Most recent

### nearest module and multiple module detection

Right now, gopls-mcp only supports to start at the project root with a go.mod, but it doesn't support:

- project root doesn't have go.mod file and the nearest go.mod is inside src(such as go source code)
- multiple go.mod inside the project root.

gopls-mcp should allow to detect them to offer better information for AI code agent.

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/6) · 2026-02-03 · open · 0 comments

### bug: go_search failed when search

Right now gopls-mcp is unable to get symbol DebugFlags inside under golang cmd module.

try to go_search 'DebugFlags' using gopls-mcp.

● gopls-mcp - go_search (MCP)(query: "DebugFlags") ⎿ {
"summary": "No symbols found." }


It happened because:

- submodule detection is missing and config doesn't take effect.
- the packages are loaded lazy

[Read the thread](https://github.com/xieyuschen/gopls-mcp/issues/4) · 2026-02-01 · closed · 0 comments

[See all 10 reports Pod holds for gopls-mcp](/mcp/gopls-mcp/issues).

## Firsthand observations

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## For agents

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