dsh-engram-session

⚠️ Unofficial project. This is an independent, community-made plugin. It is not an official DeepSeek Harness product, is not affiliated with or endorsed by DeepSeek, and is not maintained by the DeepSeek Harness team. Use at your own risk.

Per-session Engram memory for DeepSeek Harness — a standalone bundle project reusable across profiles and presets.

This package is a bundle: its dsh.bundle.patch (cordis.patch.yml) is the composition layer that inserts the plugin row; the plugin then registers the Engram Memory Protocol as its own system-prompt section (engram:memory-protocol, order 10) at load — the deployment persona is never touched. Installing it into any profile is one command:

# from anywhere; <path> may be absolute or relative to your invoking directory
dsh plugin --profile web add /home/xiuyuaned/dsh-plugins/dsh-engram-session

dsh plugin runs pnpm add and reconciles dsh.profile.bundles — a dsh.bundle-declaring package joins the layer stack automatically. The bundle owns everything (plugin row + protocol section), so removing or disabling it leaves zero side effects (no tools, no orphaned memory instructions).

Setup for a new profile or preset

1. Install dependencies once (self-contained — the project carries its own node_modules):

   cd /home/xiuyuaned/dsh-plugins/dsh-engram-session && pnpm install
   

2. Add the bundle to the profile (repeat per profile):

   dsh plugin --profile <name> add /home/xiuyuaned/dsh-plugins/dsh-engram-session
   

3. Restart the profile's app. A preset can also list the bundle directly in its dsh.profile.bundles plus a link: dependency in its package.json.

Removing is symmetric: dsh plugin --profile <name> remove dsh-engram-session. Reinstall at any time with the add command — the source lives outside the profile, so removing the bundle never deletes it.

What it does

One engram mcp stdio child per agent session, spawned with cwd = session.header.cwd (the session's workspace), with the mem_* tools registered in that agent's own scope via agent.ctx.tools.register(). Scoped registration shadows the global tool layer, so concurrent sessions each see their own memory surface under the same mcp__engram__mem_* names without collisions.

Rooting the child at the session workspace makes Engram's project auto-detection (git root / .engram/config.json) deterministic per session — the documented fix for hosts whose MCP child cannot inherit a reliable cwd (DSH web GUI, VS Code, WSL, CI). No --project pinning needed.

The model-facing tool specs are locally corrected: engram's shipped scope parameter descriptions omit global, so the plugin rewrites them (description text only — names, types, and required flags are untouched) in the registered definitions, keeping the agent's tool contract accurate without waiting for an upstream release.

Config

Field	Default	Description
serverName	engram	Namespace for model-facing tool names
binary	(auto-detected)	Engram executable; see Binary resolution
args	['mcp']	Arguments for the MCP stdio server
toolCallTimeoutMs	60000	Per tools/call timeout

Binary resolution

No machine-specific path is baked in. With binary unset, the plugin picks the first executable it finds: PATH lookup, then ~/.local/bin/engram, /usr/local/bin/engram, /opt/homebrew/bin/engram. If nothing is found it logs a warning and mounts without memory tools — the protocol section is skipped too, so agents are never told about tools that cannot exist.

Set binary in the profile config (an absolute path, or a bare command name) to override detection. A set-but-missing value logs a warning and falls back to detection, so profiles created by pre-0.4 bundles that pinned /home/xiuyuaned/.local/bin/engram self-heal on other machines.

Lifecycle

• agent/created (and a scan of already-live agents at mount) → spawn + register
• agent/disposed → unregister tools, close client (kills the child)
• plugin dispose → same teardown for every live entry

Project layout

• index.js — the plugin: per-agent Engram MCP child + scoped mem_* tool registration
• cordis.patch.yml — the bundle composition layer (plugin row)
• AGENTS.md — guidance for AI agents working on this project
• package.json / pnpm-lock.yaml — ESM manifest and lockfile

Development

See AGENTS.md for architecture details, conventions, verification steps, and pitfalls. Quick checks:

node --check index.js

Known limitations

• No reconnect supervision: if the child dies mid-session, its tools fail until the session ends; restart the GUI to recover.
• Text-only result projection: image/audio/embedded MCP blocks become diagnostics (Engram returns text results).