Context Mode
Context window optimizer for coding agents that sandboxes tool output and persists session memory.
Updated
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Use cases
About Context Mode
Context Mode is listed in our coding category and is aimed at builders. Context window optimizer for coding agents that sandboxes tool output and persists session memory. Pricing, as the maker states it: Source-available + cloud. Maturity: Mature. We last checked the official link on 2026-10-16.
What is Context Mode?
Context Mode is an MCP server that optimizes a coding agent's context window. Its README describes how raw tool output, such as a Playwright snapshot (56 KB) or twenty GitHub issues (59 KB), quickly fills the context.
Sandboxed tools keep raw data out of the context (the README cites 315 KB reduced to 5.4 KB), and every file edit, git operation, task, error and decision is tracked in SQLite and retrieved by search after the conversation compacts, so the agent picks up where it left off.
Sources: the official README and our directory listing, checked 2026-10-18. Official site: context-mode.com.
Who is Context Mode for?
Heavy users of coding agents and MCP tools who keep running out of context or losing track of work after compaction.
Context Mode at a glance
- Open source: Source-available, not OSI open source: Elastic License 2.0 (source-available)
- GitHub: mksglu/context-mode · 31,554 stars (as of Oct 21, 2026)
Key features
- MCP server that sandboxes tool output
- Session events tracked in SQLite
- BM25 search retrieves only relevant context after compaction
- Large context savings reported by the maker
Context Mode FAQ
What is Context Mode?
Context Mode is an MCP server that optimizes a coding agent's context window. Its README describes how raw tool output, such as a Playwright snapshot (56 KB) or twenty GitHub issues (59 KB), quickly fills the context.
Who is Context Mode for?
Heavy users of coding agents and MCP tools who keep running out of context or losing track of work after compaction.
Is Context Mode free?
Context Mode's pricing, as the maker states it: Source-available + cloud. Check the official site for current plans.
Is Context Mode open source?
No. Context Mode's code is published under Elastic License 2.0 (source-available), which is not an OSI-approved open-source licence.
What are alternatives to Context Mode?
Similar tools include Planning With Files, Trail Code, Claude Context, TUIOS, tty7 and Nanocoder.
Context Mode ratings and reviews
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🔁 Listed in: Graphify alternatives · Oh My OpenAgent (OmO) alternatives · Cursor alternatives
🧭 Task guides: Memory tools for coding agents · Sandboxes and secure execution tools for coding agents
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