Claude Code ecosystem
context-mode
Trims what the agent reads so long sessions do not fall apart
★ 21k
September 2026
Not stated
Claude Code ecosystem
What we checked ourselves
Not copied from the project's own blurb. These are things we opened and verified, with the date.
- 7 Sept 2026We checked that the link to the project still resolves.
- 13 Sept 2026We read the licence text itself (LICENSE) and found conditions attached to how it may be used.
- 31 Aug 2026We read the project's own documentation and found no sign that development has stopped.
Where this sits among the 63 tools we list in Claude Code ecosystem
- No API key required43 of 63
- Requires terminal commands9 that do not →
- Sends your input to the provider19 that do not →
Counted from our own checks: every tool we list is examined against the same criteria.
What it does
Every MCP tool call dumps raw output into the window — a Playwright snapshot at 56 KB, twenty GitHub issues at 59 KB — and half an hour later 40% of the context is gone and compaction has taken the memory of which files were being edited with it. This sits in between and cuts what reaches the model while preserving working state. Filtering means some detail never arrives, so loosen it when results degrade. Elastic License 2.0: internal use fine, offering it as a service is restricted.
Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.
Screenshots & visuals
Before you start
- Setup difficultyEasy to start
- Command lineRequired
- API keyNot required
- Sends data onlineYes
Judged automatically from the project's own metadata. Always confirm on the official page.
context-mode FAQ
- Is context-mode free?
- Yes. It runs on your own machine, so there is no usage-based cost either.
- Do I need to install anything or write code to use context-mode?
- It needs the command line. If you are not comfortable typing commands, expect to get stuck during setup.
- Does context-mode work on a phone?
- No. It needs a computer.
- Can I use context-mode commercially?
- Only under conditions. The page shows 記載なし, but the actual terms — the AI model this page runs, or the provider's own terms — attach restrictions. Check the provider's terms before using it at work.
How it compares
The conditions that decide whether you can actually use it, side by side.
| Tool | Command line | API key | Sends data out | Phone | Commercial use |
|---|---|---|---|---|---|
| context-mode (this page) | Required | Not needed | Yes | No | With conditions |
| voicemode | Required | Required | Yes | No | Yes |
| claude-code-ultimate-guide | Not needed | Not needed | Yes | No | Not verified |
| Claude Code | Required | Required | Yes | No | Not verified |
"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.