Code Memory for DeepSeek Harness
Give your coding agent the relevant source before its first step. Code Memory (CM) is a local code index and context plugin for JavaScript and TypeScript projects. It combines symbol lookup, dependency graphs, and semantic search to reduce repeated source discovery.
Unofficial community project. Independently developed; not affiliated with or endorsed by DeepSeek.
English · Русский · Download v0.9.1 · Windows installation
What it does
- Supplies compact source context before the first model call in DeepSeek Harness.
- Looks up named files and symbols directly; uses local MiniLM embeddings and LanceDB when discovery is needed.
- Expands relevant dependencies using the TypeScript compiler's symbol and call graph.
- Checks source versions and avoids repeating unchanged whole files already supplied to Harness.
- Exposes an MCP server for Codex and Claude Code and an optional
UserPromptSubmit hook for automatic context.
- Includes CM Atlas, a local map of modules, symbols, and their relationships.
The index, embeddings, and graph stay on your computer. Selected code is still sent to your model provider when you use a cloud model. CM does not include model credits or a model-provider subscription.
CM Atlas displaying modules and structural relationships in this public repository
Actual CM Atlas screenshot of this repository's public src directory: 39 modules, 2,409 symbols, and 8,321 relationships. The current Atlas interface is in Russian; the installation guide below is in English.
Measured results, with limits
The published Harness pilot used GPT-6 Luna on six task types in one repository, Geo Dash. Three evaluation series each ran 36 sessions: no CM, the earlier CM, and the newer CM, with two repeats per task and arm.
| Newer CM versus no CM | Published result |
|---|
| Total model tokens | 45–66% fewer across the three series |
| Estimated model price | 30–47% lower |
| Total Harness session time | 18–37% lower |
| Independently checked solutions, pooled across series | 36/36 with newer CM; 35/36 without CM |
These are small, single-project pilot results, not guaranteed savings. The ranges are observed series results, not confidence intervals. Costs are estimates; session time does not include first-time installation or indexing. All attempts, including failures, are retained. Earlier approaches and native-client experiments have different outcomes; do not transfer these percentages to every client or workload.
Method, raw results, and reproduction · Codex and Claude Code experiments · What did not work
Install into an existing Harness
Requires DeepSeek Harness 0.2.0-rc.2 and Node.js 24 or 22.19+ within 22.x:
dsh plugin --profile web add github:kobubu/Rag-Coding#v0.9.1
The tag contains the compiled plugin, CLI entry points, and Atlas. CM needs no installation build or Vite/React runtime modules. Then prepare the project index and local model. A ready release tarball is also available:
dsh plugin --profile web add https://github.com/kobubu/Rag-Coding/releases/download/v0.9.1/dsh-plugin-code-memory-0.9.1.tgz
Git tags before 0.9.1 require their release tarball or an explicit source build. The new runtime works with scripts disabled; native dependencies follow the host package manager's policy.
Install on Windows
Download CM-0.9.1-Windows.zip and SHA256SUMS.txt from the v0.9.1 release, verify the checksum, and extract the ZIP. From the extracted folder, run:
powershell -NoProfile -ExecutionPolicy Bypass -File .\install_cm.ps1 -ProjectRoot 'C:\path\to\your-project' -Clients harness
The installer uses a compatible Node.js or downloads a private runtime, installs CM and Harness 0.2.0-rc.2, downloads the embedding model, and prepares your index. Administrator rights and a source checkout are not required. Internet access is required for the initial dependencies and model downloads. Open the generated start-harness.ps1 path printed by setup, then configure your model provider in Harness.
Use -SourceScope src to index a subdirectory. Use -Clients harness,codex,claude to add project MCP connections for all three clients; Codex and Claude Code must be installed separately. Their automatic-context hook is currently a separate manual setup, not an installer default.
Install, launch, verify, and remove · Native-client hook setup
Build from source
Use Node.js 24 LTS, or Node.js 22.19.0+ within the 22.x line.
git clone https://github.com/kobubu/Rag-Coding.git
cd Rag-Coding
npm ci
npm run verify
npm run cm:index
npm run cm:vectors
npm run cm:search -- --query "how are embeddings reused between snapshots"
npm run plugin:smoke
plugin:smoke dispatches tools through the real Harness runtime without a model call. In PowerShell, use npm.cmd for commands that forward flags. For restricted cloud builds, ONNXRUNTIME_NODE_INSTALL=skip npm ci skips the native runtime download; running local embeddings still requires a working ONNX runtime.
The Windows bootstrap is the packaged installation path. A macOS/Linux installer, automatic release updates, and a subscription service are not included.
For source changes, npm run compile rebuilds the runtime. Commit matching dist/src/ and dist/viewer/; npm run package:check and CI reject missing/stale artifacts. The command is named compile because npm treats a script named build as a reason to rebuild Git dependencies.
Documentation
The following engineering documents are currently in Russian; the README and Windows release guide are in English.
CM is written in TypeScript/Node.js. Project code is indexed without being executed. Supported inputs are JavaScript/TypeScript source files; current corpus limits are 500 files and 8 MiB of source. See contribution rules.
Try it on another repository
Show Your Plugins discussion · Community catalog submission
Independent A/B results are welcome: use the same task, model, reasoning settings, checks, and starting commit with CM on and off. Include indexing/setup time separately, all failed attempts, total tokens, elapsed time, and whether the patch actually passes independent checks. Report regressions as well as wins in Issues.
