fastcontext
This skill contains shell command directives (!`command`) that may execute system commands. Review carefully before installing.
fastcontext
!command -v fastcontext >/dev/null 2>&1 || echo '> ⚠️ **fastcontext CLI not found on PATH.** Install and configure it before using this skill: https://github.com/T0mSIlver/fastcontext#installation'
A read-only repository-exploration subagent. It searches and reads files in a separate process, then returns a compact <final_answer> block of path:line citations. Delegating to it keeps broad exploration out of your context window — you get the evidence, not the file dumps. It never edits; you act on what it finds.
When to use
Run it before you answer/edit/review/debug code you're not already sure about:
- Understand or explain how something works
- Locate where a symbol or behavior is defined or used ("where is X?", "what calls Z?")
- Trace logic across files or layers (request → handler → service → DB)
- Assess blast radius ("what breaks if I change X?")
Prefer it over manual grep/glob/read chains whenever the answer spans more than one file.