AI agent tools for context window
Short answer: Our top pick for context window: headroom, with the highest AgentPick Score (92/100) among tools tagged "context-window". Runners-up: gortex (73) and jcodemunch-mcp (71). Compare what each does, its license and how recently it was updated below.
| # | Tool | What it does | Score | Stars | License | Updated |
|---|---|---|---|---|---|---|
| #1 | headroom | Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same a… | 92/100 | ★ 75k | Apache-2.0 | 14 Oct 2026 |
| #2 | gortex | High-performance code-intelligence engine for AI agents and IDE, supports 257 languages, multi repositories, based on graph, with access via CLI, MCP … | 73/100 | ★ 1.9k | Apache-2.0 | 14 Oct 2026 |
| #3 | jcodemunch-mcp | Cut AI token costs 95%+ on code exploration. The leading MCP server for precise, symbol-level GitHub code retrieval via tree-sitter AST. Works with Cl… | 71/100 | ★ 2.8k | See repo | 14 Oct 2026 |
| #4 | cocoindex-code | A super light-weight embedded code search engine CLI (AST based) that just works - improves speed and efficiency for coding agent 🌟 Star if you like … | 69/100 | ★ 2.9k | Apache-2.0 | 6 Oct 2026 |
| #5 | token-optimizer | Find the ghost tokens. Fix them. Survive compaction. Avoid context quality decay. | 68/100 | ★ 2.6k | See repo | 14 Oct 2026 |
| #6 | sqz | Context compression for AI coding agents: compresses tool output before it enters the model, dedups repeats to 13-token refs. Claude Code, Cursor, Cod… | 66/100 | ★ 648 | Apache-2.0 | 11 Oct 2026 |
| #7 | mnemon | LLM-supervised persistent memory for AI agents — graph-based recall, cross-session knowledge, single binary. Works with DeepSeek Harness, Claude Code,… | 65/100 | ★ 630 | Apache-2.0 | 11 Oct 2026 |
| #8 | mcpproxy-go | Supercharge AI Agents, Safely | 64/100 | ★ 390 | MIT | 14 Oct 2026 |
| #9 | boost | Save tokens. Maximize context, Safely | 60/100 | ★ 528 | See repo | 13 Oct 2026 |
| #10 | squeez | Hook-based token compressor for 7 AI CLI hosts (Claude Code, Copilot CLI, OpenCode, Gemini CLI, Codex CLI, Pi, Hermes). Up to 95% bash compression, si… | 50/100 | ★ 217 | Apache-2.0 | 8 Oct 2026 |
| #11 | claude-brain | Give Claude Code photographic memory in ONE portable file. No database, no SQLite, no ChromaDB - just a single .mv2 file you can git commit, scp, or s… | 25/100 | ★ 578 | MIT | 19 Jan 2026 |
Source: each project's public GitHub repository (description, stars, license, last push). Listed tools aren't tested or ranked by AgentPick.
How to choose
- Grant the narrowest permissions the server allows.
- Check whether it runs locally or calls a remote service.
- Prefer servers listed in the official MCP registry.
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