Spawn the ACP-variant runtimes (claude-code-acp / codex-acp / copilot-acp). claude-code-acp validated; it surfaces real tool failures that native claude-code can't. Run with /test-acp-runtime. Pairs with /launch-grackle.
How to install test-acp-runtime?
nick-pape/grackle/test-acp-runtime
$npx -y skills add nick-pape/grackle --skill test-acp-runtimeInstalls into the current project.
›Prefer a prompt? Paste this to your agent
Run `npx skills use "https://github.com/nick-pape/grackle" --skill "nick-pape/grackle/test-acp-runtime"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/nick-pape/grackle" that are relevant to the current task. Run `npx skills add "https://github.com/nick-pape/grackle"` and select the relevant skills, then follow their instructions.
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