context-mode

name	context-mode
description	context-mode is an MCP server that saves 98% of your context window by sandboxing tool outputs. It routes large file reads, shell outputs, and web fetches through SQLite + FTS5 instead of flooding the context. Also provides session continuity across context compactions via BM25 retrieval.
triggers	["分析项目","有多少文件","帮我研究","检查更新","token 节省","上下文压缩","context overflow","帮我搜索"]
tags	["token-optimization","context-management","mcp","productivity"]
compatibility	openclaw | claude-code | vscode-copilot | cursor | gemini-cli
license	ELv2
source	https://github.com/mksglu/context-mode

Context Mode

An MCP server that solves the context window problem in AI coding agents. It provides:

1. Context Saving — sandbox tools keep raw data out of context window
2. Session Continuity — SQLite + FTS5 for event tracking
3. Think in Code — program analysis instead of reading files
4. Output Compression — terse output format reducing tokens 65-75%

Available Tools

Tool	When to Use	Token Savings
ctx_batch_execute	Run multiple commands + auto-search results	90%+ vs raw exec
ctx_execute	Single script execution (JS/Python/Shell)	90%+ vs raw exec
ctx_execute_file	Run code from a file, return only result	high
ctx_index	Index docs/knowledge into searchable FTS5	—
ctx_search	Search indexed content with BM25	fast recall
ctx_fetch_and_index	Fetch URL + index into knowledge base	90%+ vs raw web fetch

Decision Rules

Use ctx_batch_execute instead of multiple exec/read calls when:

• Analyzing multiple files at once
• Counting/grepping across many files
• Need command output + search results together

Use ctx_execute instead of reading files when:

• User asks "how many lines/funcs/classes in X"
• Need to compute something, not just read it

Use ctx_fetch_and_index instead of web_fetch when:

• Researching a topic across multiple pages
• Full raw content won't fit in context

Output Format

Terse. Drop filler, pleasantries, hedging.

❌ "So I ran a command to check the files and found that there are..."
✅ "Checked. 3 TypeScript files: src/index.ts (142 lines), src/cli.ts (89 lines)."

OpenClaw Integration

Install via MCP:

openclaw mcp set context-mode '{"command":"npx","args":["-y","context-mode"]}'
openclaw gateway restart