[!NOTE] 📦 This plugin lives in the dsh-plugins monorepo — file issues & pull requests there. npm: @hy-sde-org/dsh-memory · @hy-sde-org/dsh-tool-memory

dsh-memory — durable project memory for DeepSeek Harness

Two standalone packages here, installable as one plugin for the DeepSeek Harness CLI:

package	role	installed by users?
@hy-sde-org/dsh-memory	the plugin: host-plane ctx.memory service + shipped local backend (bundle row + preset example)	yes
@hy-sde-org/dsh-tool-memory	the model-facing tools (retain / recall / reflect / memory_edit / learn / mine_sessions) + first-turn prompt injection	yes

(@hy-sde-org/dsh-memory-extraction, automatic extraction at compaction checkpoints, ships from the sibling dsh-memory-extraction/ workspace directory.)

This is the oh-my-pi agent-memory surface, ported onto the harness ctx.memory service contract as a standalone plugin with zero upstream harness changes: the service row ships as a cordis.patch.yml bundle, the tool row ships as a ready-to-copy agent preset, and every @deepseek-ai dependency resolves from the npm registry at the 0.2.0-rc.2 baseline — so it installs on official DeepSeek Harness releases (dsh-v0.2.0-rc.2 and later) exactly as it runs in the hy-sde fork.

Identity	Value
Packages	@hy-sde-org/dsh-memory (service) · @hy-sde-org/dsh-tool-memory (tools)
Plugin ids	memory — host-plane service row inserted by the bundle · tool-memory — agent-plane preset row
Seam	ctx.memory + the memory:// scheme; retain / recall / reflect / memory_edit / learn / mine_sessions tools and the memory:project prompt section

Based on oh-my-pi — the agent-memory surface (durable project-scoped bank, learned lessons, consolidation, and the retain/recall/reflect/memory_edit/learn data model) is ported from oh-my-pi and adapted to the DeepSeek Harness ctx.memory seam. oh-my-pi is MIT-licensed (Mario Zechner, Can Bölük); see THIRD-PARTY-NOTICES.md.

Why

Compaction and session boundaries erase working context: the next session starts from conversation replay, not from what the project decided. This plugin is the counterweight — durable, project-scoped memory the agent curates itself with the memory tools, reloaded at the start of the next session through prompt injection. It complements DSH's session-query and compaction instead of overlapping them: those replay conversation history, this bank answers "what did we decide / prefer / learn here?" across sessions.

Prerequisites

• Node.js 22.19 or newer with npm and pnpm on PATH;
• DeepSeek Harness 0.2.0-rc.2 or later, including the standard dsh CLI;
• no keys and no external services — the shipped local backend is pure Node (node:fs, zstd frame container) storing under <harness home>/memories/<project>/;
• optional: a host sessionQuery service (enables mine_sessions and the session tier of recall) and the @hy-sde-org/dsh-internal-urls registry (enables memory:// reads through the read/grep tools) — both degrade gracefully when absent.

Install the Harness CLI and pnpm before continuing:

npm install --global @deepseek-ai/dsh@0.2.0-rc.2 pnpm
dsh --version

Quick start

Route A — published npm package (recommended)

dsh plugin --profile web add @hy-sde-org/dsh-memory @hy-sde-org/dsh-tool-memory

Then copy the preset from packages/memory/examples/agent-preset/ to ~/.dsh/.agent-presets/<id>/ and select it in the Web UI preset picker:

mkdir -p ~/.dsh/.agent-presets/my-memory
cp packages/memory/examples/agent-preset/agent.cordis.yml \
   packages/memory/examples/agent-preset/preset.yml \
   ~/.dsh/.agent-presets/my-memory/

Route B — from source (validate this checkout or hack on the plugin)

git clone git@github.com:hy-sde/dsh-plugins.git
cd dsh-plugins
pnpm install
pnpm --filter @hy-sde-org/dsh-memory build

MEMORY_TGZ="$(cd dsh-memory/packages/memory && pnpm pack --pack-destination /tmp | tail -n 1)"
TOOLMEMORY_TGZ="$(cd dsh-memory/packages/tool-memory && pnpm pack --pack-destination /tmp | tail -n 1)"
dsh plugin --profile web add "$MEMORY_TGZ" "$TOOLMEMORY_TGZ"

pnpm pack runs the normal prepack build and produces a tarball containing dist/.

Verify the composed configuration

dsh web --dump-config        # the memory row is present in the base bundle

Run

dsh web

The memory tools are model-facing, so exercising them is just conversation, per the shipped docs:

• "Remember: we publish via scripts/release-public.sh --publish." — the agent calls retain; the entry lands in the project bank (bank.jsonl.zstd).
• Start a new session in the same project — the memory:project prompt section injects memory_summary.md + learned.md on the very first turn.
• "What did we decide about publishing?" — recall (or reflect for a synthesized answer) returns bank entries with ids that round-trip through memory_edit.
• read memory://root (via an internal-URL-aware read tool) shows the consolidated overview — summary, learned lessons, and the working bank.

Uninstall

dsh plugin --profile web remove @hy-sde-org/dsh-memory
dsh plugin --profile web remove @hy-sde-org/dsh-tool-memory
# remove the preset directory you copied from examples/agent-preset/ as well

Removing the rows does not touch the durable bank under <harness home>/memories/<project>/ — that is user data; delete it separately if you want it gone.

What the bundle does

@hy-sde-org/dsh-memory's cordis.patch.yml inserts exactly one row into the profile composition on install:

• memory → @hy-sde-org/dsh-memory — the host-plane ctx.memory service (durable project-scoped store crossing sessions).

It touches no existing row, so dsh plugin add never breaks boot on a stock release. The agent-plane tool-memory row is not inserted anywhere; it lives in the copied preset (examples/agent-preset/) beside your other preset rows, resolving the host service across the plane boundary.

Development

pnpm install
pnpm -r check      # strict typecheck of both packages
pnpm -r test       # 42 tests (29 memory + 13 tool)
pnpm -r build      # tsc -> dist
bash scripts/release-public.sh --check      # pre-publish validation
bash scripts/release-public.sh --publish    # publish memory then tool-memory

Layout

packages/memory/       @hy-sde-org/dsh-memory — the service bundle
  cordis.patch.yml        the installable bundle (host row)
  examples/agent-preset/  the ready-to-copy preset (tool row)
packages/tool-memory/  @hy-sde-org/dsh-tool-memory — the tools + prompt section

License and attribution

This repo is licensed MIT — see LICENSE (© 2026 hy-sde). The agent-memory surface — the durable project-scoped local backend, the learned-lessons and consolidation model, and the retain/recall/reflect/ memory_edit/learn tool set — is ported from oh-my-pi (MIT License, © Mario Zechner 2025, © Can Bölük 2025-2026); the upstream provenance is aggregated in THIRD-PARTY-NOTICES.md, together with the DeepSeek Harness (MIT, © 2026 DeepSeek) service-seam conventions the ctx.memory contract follows. These are separately installable packages; the harness remains the property of its own project.