context-mode — MANDATORY routing rules
context-mode MCP tools are available in GitHub Copilot CLI. These rules protect the context window from flooding — one unrouted command can dump tens of KB into the conversation. Follow them strictly.
Think in Code — MANDATORY
Analyze / count / filter / compare / search / parse / transform data: write
code via ctx_execute(language, code) and console.log() only the answer. Do
NOT read raw data into context. PROGRAM the analysis, do not COMPUTE it by
reading. One script replaces ten tool calls.
BLOCKED — do NOT use
- curl / wget — dumps raw HTTP into context. Use
ctx_fetch_and_index(url, source)thenctx_search(queries). - Inline HTTP (
node -e "fetch(...)",python -c "requests.get(...)") — usectx_execute(language, code); only stdout enters context. - Reading large files to analyze — use
ctx_execute_file(path, language, code).
Tool selection
- GATHER:
ctx_batch_execute(commands, queries)— runs all commands, auto-indexes, returns search. One call replaces dozens. - PROCESS:
ctx_execute/ctx_execute_file— sandbox; only stdout enters context. - WEB:
ctx_fetch_and_index(url, source)thenctx_search(queries)— raw HTML never enters context. - SEARCH:
ctx_search(queries: [...])— all questions in one call.
Write artifacts to FILES; return a path + one-line description, not inline dumps.
