Context Mode

lastmod 2026-03-02created 2026-03-021 edits

An MCP server that cuts Claude Code's context consumption by 98%

About

• Solves the problem of large volumes of raw data from external tool calls quickly using up the context window
• Sits between Claude Code and tool output to compress and filter data, shrinking 315KB to 5.4KB (98% reduction)
• Isolates each execution with a sandbox architecture and includes only stdout in the context, blocking leaks of raw data such as logs and snapshots
• Indexes Markdown content in an SQLite FTS5-based knowledge base and applies BM25 ranking and Porter stemming for accurate code block search
• With the same 200K token limit, session duration grows from 30 minutes to 3 hours, enabling efficient context management for AI agents

See also

• Claude Code
• MCP

Favorite site

• Stop Burning Your Context Window — We Built Context Mode | Mert Köseoğlu
• Context Mode - An MCP server that cuts Claude Code's context consumption by 98% | GeekNews