carldaws/squiggles

Overview

carldaws/squiggles is an MCP server that connects coding agents to Language Server Protocol capabilities. It exposes LSP diagnostics, navigation, refactoring, and server-specific features to the agent.

Best for

Best for
Developers building or using coding agents that need live diagnostics and language-aware refactoring

Use cases

• Surface compiler errors and warnings inside an agent's context
• Navigate to symbol definitions and references via LSP
• Trigger refactorings such as rename or extract through the agent

How to use

Install

npx squiggles init

Tools exposed

• goto_definition
• code_actions
• call_hierarchy_incoming
• open_file
• ruby_discover_tests
• ruby_go_to_relevant_file
• ruby_show_syntax_tree
• ruby_dependencies
• ts_go_to_source_definition
• ts_organize_imports
• ts_rename_file
• rust_expand_macro
• rust_parent_module
• rust_open_cargo_toml
• rust_external_docs
• rust_related_tests
• rust_view_syntax_tree
• rust_runnables
• rust_reload_workspace
• rust_dependencies

Notes

carldaws/squiggles is an MCP server that connects coding agents to Language Server Protocol capabilities. It exposes LSP diagnostics, navigation, refactoring, and server-specific features to the agent.

5 stars on GitHub. Last updated 2026-09-21. Licensed MIT.

Use cases

• Surface compiler errors and warnings inside an agent’s context
• Navigate to symbol definitions and references via LSP
• Trigger refactorings such as rename or extract through the agent

Pros

• Bridges LSP features into agent workflows
• Built in TypeScript, matching typical agent tooling stacks
• Includes custom LSP server extensions beyond standard diagnostics

Cons

• Requires an MCP-compatible agent and separate LSP server setup
• Project has only 5 stars, indicating limited community validation
• Scope is constrained by what each LSP server exposes

Indexed from awesome-mcp-servers-punkpeye and enriched against its public facts.