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Local context tooling for AI agents. Use it to select, shape, reuse, recover, and inspect context before inference when reading files, running shell commands, searching code, or exploring directories.
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/yvgude/lean-ctx --skill lean-ctxコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
SKILL.md を表示中
SOC 職業分類に基づく
| name | lean-ctx |
| description | Local context tooling for AI agents. Use it to select, shape, reuse, recover, and inspect context before inference when reading files, running shell commands, searching code, or exploring directories. |
which lean-ctx || curl -fsSL https://raw.githubusercontent.com/yvgude/lean-ctx/main/skills/lean-ctx/scripts/install.sh | bash
lean-ctx setup
| Profile | Tools advertised |
|---|---|
| Lean (default, unpinned) | ctx_read, ctx_shell, shell, ctx_search, ctx_glob, ctx_tree, ctx_session, ctx_compose, ctx_callgraph, ctx_patch*, ctx_call, ctx_expand |
minimal | ctx_read, ctx_shell, ctx_search, ctx_glob, ctx_tree; ctx_call is also advertised as the fallback invoker |
standard | Minimal + ctx_compose, ctx_explore, ctx_knowledge, ctx_session, ctx_callgraph, ctx_graph, ctx_delta, ctx_execute, ctx_expand, ctx_overview, ctx_url_read, ctx_patch; ctx_call is also advertised as the fallback invoker |
power | Full public tool registry |
* Lean hides ctx_patch for clients with a reliable native editor. Disabled
tools, role policy, and client compatibility can further narrow every profile.
lean-ctx -c "git status"
lean-ctx -c "cargo test"
lean-ctx -c "npm install"
lean-ctx ls src/
| Mode | When |
|---|---|
anchored | Files you will edit (full text + N:hh| anchors for ctx_patch) |
full | Verbatim cached read |
map | Context-only (deps + exports) |
signatures | API surface only |
diff | After edits (changed lines) |
aggressive | Large files, syntax-stripped; JSON arrays row-deduped (lossless) |
entropy | Shannon filtering |
task | Task-relevant lines |
lines:N-M | Specific range |
auto | System selects optimal |
Re-reads may use the local cache. Set fresh=true to bypass it.
Redundant JSON (arrays of like objects) is crushed losslessly into a compact
_defaults + per-row form; if a slice was dropped, recover it with
ctx_expand(id, json_path=… | search=…).
Anchored editing keeps an exact, source-addressable view: ctx_read(mode="anchored") → ctx_patch(path, op, line, hash, new_text).
Never reproduce old text byte-for-byte; batch via ops:[…]; op=create writes new files.
Stale anchor → CONFLICT with fresh anchors (retry once). Native Edit/StrReplace stay fine;
ctx_edit (str_replace) is the legacy fallback via ctx_call/power profile.
Architecture: ctx_symbol, ctx_callgraph, ctx_impact, ctx_architecture, ctx_routes, ctx_smells, ctx_quality ↳ "What breaks if I change this file/class/type?" → ctx_impact (file-level blast radius; resolves same-package/namespace type usage with no import for C#, Java, Go and Kotlin). "Who calls this function?" → ctx_callgraph (symbol-level). "How navigable / how much is complexity costing me?" → ctx_quality (navigability score + token quality tax). Experimental local collaboration (explicit opt-in only): ctx_agent, ctx_share, ctx_task, ctx_handoff, ctx_workflow Verify: ctx_benchmark, ctx_verify, ctx_proof, ctx_review Batch: ctx_fill, ctx_execute, ctx_expand, ctx_pack
Full docs: https://leanctx.com/docs