Context Mode
Deploy Context Mode without confusing MCP registration, hooks and continuity
Check Node requirements, package version, diagnostics and host routing as separate acceptance gates for a controlled local Context Mode installation.
What you will learn
- The inspected package requires Node 22.5.0 or newer.
- Registration, routing and continuity need separate tests.
- Uninstalling an integration is not the same as removing its stored data.
Before you start
- Basic JSON and MCP concepts
- An isolated test client and invented data
Explain the chapter’s actual implementation boundary and verify it with an explicit evidence fixture.
Key takeaways
- The inspected package requires Node 22.5.0 or newer.
- Registration, routing and continuity need separate tests.
- Uninstalling an integration is not the same as removing its stored data.
Pin the environment before copying a setup recipe
At the inspected commit, package.json reports version 1.0.169 and a Node engine requirement of at least 22.5.0. The bundle script’s older compilation target is not the installation requirement. Record the actual runtime selected by the host, not only the Node version printed in an unrelated terminal. Native dependencies and host-launched PATH differences can make those environments behave differently.
The published executable is named context-mode. The README offers plugin installation for some hosts and direct MCP registration for others. Read the section for the exact host and version being deployed. The sample configuration below pins the package for a disposable, generic stdio MCP client; configuration location and surrounding syntax remain client-specific. Installing packages can run installation scripts and requires a dependency review.
Validate three capabilities independently
First confirm that the host discovers the expected MCP tools and that a harmless index/search round trip succeeds. Second check whether the integration installs hooks that actually route ordinary tool work through Context Mode. Third test the documented continuity behavior using an invented session fact. Passing the first gate says nothing by itself about the other two.
ctx_doctor is the diagnostic tool named by the project, while some plugin hosts expose a slash-command wrapper. Do not paste a host-specific slash command into a different client and conclude the server is broken. Capture diagnostics and the selected integration path. A missing hook, a missing language runtime and an unavailable SQLite backend require different fixes.
Make rollback and data ownership explicit
Treat host configuration, the installed package and stored content as separate deployment artifacts. Keep a copy of the previous test configuration, record the selected package version and identify the data paths reported for that host. Removing an MCP registration can stop tool access without deleting previously indexed content. Conversely, deleting stored content does not uninstall a plugin.
Accept the setup only after registration, actual routing, retrieval accuracy and restart behavior match the documented requirements for your host. This article does not certify all platform adapters or a public hosted service. For an externally offered service, evaluate the inspected Elastic-2.0 terms separately; a working local integration is not evidence of deployment authorization or tenant isolation.
Implementation steps
- 1
Review dependencies and the exact host integration guide.
- 2
Record runtime and package versions in a disposable environment.
- 3
Check tool discovery, diagnostics and a fixture round trip.
- 4
Verify routing and restart behavior before using project data.
Copy-ready example
{"mcpServers":{"context-mode":{"command":"npx","args":["-y","context-mode@1.0.169"]}}}Frequently asked questions
Why are tools visible but context still grows?
MCP registration may work while automatic routing is absent or inactive. Inspect the host’s actual tool path rather than assuming hooks were installed.
Can I use Node 18 because the bundle targets it?
The inspected package engine requires Node >=22.5.0. A compilation target is not a substitute for the declared runtime requirement.
Sources
- README.mdSource checked 2026-09-07
- package.jsonSource checked 2026-09-07
- LICENSESource checked 2026-09-07
- src/store.tsSource checked 2026-09-07
- src/search/unified.tsSource checked 2026-09-07
- src/server.tsSource checked 2026-09-07
- src/executor.tsSource checked 2026-09-07
- src/security.tsSource checked 2026-09-07
- src/session/purge.tsSource checked 2026-09-07
- tests/store-bytecap.test.tsSource checked 2026-09-07