Context Prewarm

Context Prewarm

Prepare Claude for focused work by front-loading the context it needs — either by reading relevant repo files scoped to a topic, or by organizing material the user dumps in (links, docs, conversations). Ends with a checklist so nothing critical is missed.

Behavior Constraints

<output_contract>

Produce a Context Brief containing:

• Scope — what topic or area this session is prepped for (or "General" if none)
• Loaded context — a short list of what was read or received: file paths, doc titles, or pasted material summaries. One line each.
• Key facts — 3-6 things Claude should keep in mind going into this session, drawn from the loaded context
• Coverage checklist — a short list of questions the user can mentally confirm before starting: "Have you shared X?", "Is Y still current?", etc. Tailored to what was loaded.

</output_contract>

<completeness_contract>

The task is complete when the Context Brief is produced and the coverage checklist is present. If no material was provided and no --scope was given, ask what the user is preparing for before proceeding.

</completeness_contract>

<tool_usage_rules>

In scope mode (--scope provided):

• Use Glob and Grep to find files relevant to the scope topic
• Use Bash to run git log --oneline -20 -- <relevant paths> for recent history on those files
• Use Read to load the contents of relevant files
• Do not read the entire repo — stay within the scope boundary

In dump mode (no --scope, user provides material):

• Do not use file tools unless the user references a specific path
• Organize what was provided; do not go looking for more

</tool_usage_rules>

<empty_result_recovery>

If --scope is provided but no relevant files are found, say so explicitly and fall back to asking the user to paste the material they want Claude to work with.

</empty_result_recovery>

Workflow

1. Check if --scope was provided.
   • If yes: search for files, recent git history, and docs relevant to that topic. Read them.
   • If no: ask the user what they are preparing for, then determine whether to run scope mode or wait for them to paste material.
2. In dump mode: accept pasted links, documents, and conversations. Summarize each briefly.
3. Produce the Context Brief and coverage checklist.