# Xcode Diagnostics

> Use this tool when you need to quickly identify and diagnose issues in Swift projects, such as build errors and warnings, without manual log searching. It extracts and parses DerivedData logs, providing structured diagnostic information including file paths, line numbers, and fix-it suggestions. Ideal for developers working with Swift concurrency features, it simplifies error resolution and improves project development efficiency.

Canonical page: https://skillsregistry.net/skills/leftspin-xcode-diagnostics  
JSON: https://api.skillsregistry.net/v1/skills/leftspin-xcode-diagnostics

## Description

The Xcode Diagnostics MCP plugin extracts and parses build errors and warnings from Xcode's DerivedData logs, enabling AI assistants to quickly identify issues in Swift projects without manually searching through build logs. Developed by Mike R. Manzano, it provides tools to list available Xcode projects and extract structured diagnostic information including file paths, line numbers, error messages, and fix-it suggestions. The implementation features enhanced regex patterns optimized for capturing Swift concurrency-related warnings and includes comprehensive error categorization for syntax errors, type errors, protocol conformance issues, and Swift 6 language mode compatibility warnings, making it particularly valuable for developers working with Swift concurrency features.

## Trust

- **Trust score (0–1):** 0.55
- **Verification tier:** scanned
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** search
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/leftspin-xcode-diagnostics)
- **Repository:** <https://github.com/leftspin/mcp-xcode-diagnostics>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "leftspin-xcode-diagnostics"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/leftspin-xcode-diagnostics` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/leftspin-xcode-diagnostics/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt