wehub-resource-sync
26382a7ac6
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1.4 KiB
1.4 KiB
lean-ctx — Token Optimization
lean-ctx is configured as an MCP server. Use lean-ctx MCP tools instead of built-in tools:
| Built-in | Use instead | Why |
|---|---|---|
| Read / cat / head | ctx_read |
Session caching, 6 compression modes, re-reads cost ~13 tokens |
| Bash (shell commands) | ctx_shell |
Pattern-based compression for git, npm, cargo, docker, tsc |
| Grep / rg | ctx_search |
Compact context, token-efficient results |
| ls / find | ctx_tree |
Compact directory maps with file counts |
For shell commands that don't have MCP equivalents, prefix with lean-ctx -c:
lean-ctx -c git status # compressed output
lean-ctx -c cargo test # compressed output
lean-ctx -c npm install # compressed output
ctx_read Modes
full— cached read (use for files you will edit)map— deps + API signatures (use for context-only files)signatures— API surface onlydiff— changed lines only (after edits)aggressive— syntax strippedentropy— Shannon + Jaccard filtering
Use native Edit/StrReplace when available. If Edit requires Read and Read is unavailable,
use ctx_edit(path, old_string, new_string) — it reads, replaces, and writes in one MCP call.
NEVER loop trying to make Edit work. If it fails, switch to ctx_edit immediately.
Write, Delete have no lean-ctx equivalent — use them normally.