Summary
This is one of those skills you install after watching Core Data crash in production for the third time and finally admitting it's not the framework's fault. It helps diagnose the usual suspects: thread confinement violations, schema migration failures, and relationship query performance issues. The forbidden section is worth the install alone, it cuts through the "let's switch to Realm" wishful thinking and forces you to actually understand what went wrong. If you're mixing SwiftData with Core Data or seeing "unresolvable fault" errors after deployments, this will walk you through the diagnostic process without the usual Apple documentation runaround.
Install to Claude Code
npx -y skills add charleswiltgen/axiom --skill axiom-core-data-diag --agent claude-codeInstalls into .claude/skills of the current project.
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Files
SKILL.md
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Plug Mailtrap into your AI workflow and let it handle the email.
Connect Mailtrap MCP →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →
