dsh-auto-memory

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Your dsh agent forgets everything you tell it. Every. Single. Session.

Fix it with one command. Claude Code-style persistent memory for DeepSeek Harness — native, zero servers, zero embeddings, zero setup.

dsh plugin --profile demo add dsh-auto-memory

Say "Remember: I'm a Python backend engineer preparing for interviews" today — open a brand-new session tomorrow, ask "what do you know about me?", and it remembers.

What's new in 0.3.0 (P2)

• Pinned memories (pinned: true on memory_write): pinned entries lead the index, survive budget truncation, and are exempt from staleness eviction — a trust anchor the user controls.
• Eval-driven fix: the injection budget now covers the whole section (index + guidance); it used to overshoot by ~800 bytes. Caught by the new deterministic evaluation layer on its first run.
• Deterministic eval layer (evals/) in CI: injection budget curves, eviction zero-misfire, link-expansion bounds, and a signal-to-noise characterization — which pinned-priority truncation then improved from 38% → ≥80% probe retention under half-budget pressure. Same budget, better memories.

What's new in 0.2.0 (P1)

• Auto-consolidation (autoSummarize: true): when a root session ends, a background LLM pass extracts durable new facts from the session and files them as memories — deduplicated, capped, fully silent on failure. Claude Code doesn't do this automatically.
• Forgetting & eviction: every memory carries lifecycle metadata (created/updated/reads); memory_read counts references; staleAfterDays soft-hides zero-reference stale memories from the injected index (files kept); memory_prune lists (dry-run) or deletes aged memories.
• Recall expansion: memory_read resolves [[name]] cross-links one level and attaches linked summaries.
• memory_delete_all — guarded by tools/pre-execute human approval: the model cannot self-confirm irreversible bulk deletes.
• Hardened by a second adversarial review (11 agents): single-lock clear (no concurrent-write escape), conditional index rebuild on touch (no O(N) amplification), session-start stale refresh, subagent capture cleanup, abortable consolidation.

Tools: memory_write / memory_read / memory_list / memory_delete / memory_prune / memory_delete_all.

Claude Code has this. dsh didn't. Now it does.

DeepSeek Harness is the hottest open agent harness on GitHub right now — models, tools, sandboxes, everything is a plugin. But it ships with no memory subsystem at all. The official answer is three default-off MCP configs to third-party servers, which the official docs themselves qualify: not auto-injected, no forgetting policy, substring-only search. Your agent has amnesia by design.

dsh-auto-memory closes that gap natively:

Memories are ordinary files under $DSH_HOME/memory/ — hand-editable, grep-able, git-friendly, yours.

One minute to feel it

node scripts/demo.mjs   # no API key, no browser: watch write → index → inject → recall → forget

Or for real, in a chat: tell your agent things worth remembering. The model calls memory_write / memory_read / memory_list / memory_delete, following Claude Code's write discipline: dedupe-and-update over piling up, absolute dates only, [[name]] cross-links, feedback memories carry Why: / How to apply: lines.

What the model actually sees

Every request, one system-prompt section (order 4000) carries the index — re-evaluated per step, byte-budgeted, and gone entirely when the store is empty:

# Persistent memory index
## Project memories
- [压测过 PostgreSQL](id-generator-benchmark.md) — psycopg2 连接池有踩坑经验 (2026-09)
- [用户是 Python 后端工程师](user-prefers-python.md) — 正在准备面试; 偏好中文交流

Chinese titles, YAML frontmatter, one file per memory — exactly the Claude Code MEMORY.md model, rebuilt natively on dsh's prompt-assembly pipeline.

Hardened before first release

This plugin survived a 12-agent adversarial code review (680k tokens of source-level scrutiny) before v0.1.0. Five production-grade traps were caught and fixed — with regression tests — including two that would have been field incidents:

• The NTFS silent destroyer: a memory named memory collides with MEMORY.md on case-insensitive filesystems — the write succeeds while destroying the record. Blocked by a reserved-name guard.
• The poisoned-prompt bomb: three literal {{{ }}} braces in any memory could crash every model request in the workspace — with no way for the model to self-recover. Neutralized by a converging sanitizer.

Plus: orphaned-lock self-healing (Ctrl+C can't brick your memory store), symlink-read protection, malformed-file tolerance, stable index ordering to protect KV-prefix caches, and a strict no-custom-session-events policy (they make dsh sessions refuse to resume).

Measured, not just claimed

A deterministic evaluation layer (evals/) runs in CI — no LLM, fully reproducible:

• Injection budget holds at any scale: 20/50/100/200 memories → the injected section stays ≤ 4 KB (4065/4048/4018/3940 bytes measured), with truncation markers; empty store injects 0 bytes.
• Eviction never misfires: four-class mixed scenario — only stale-zero-read memories get hidden; zero files lost; one read revives.
• Known limitation, pinned as baseline: budget truncation is currently positional (index order), not relevance-ranked — probe retention under half-budget pressure drops to ~38%→10% as N grows. Pinning fixes it for what matters: pinned probes retain ≥80% at the same budget (0.3.0); full relevance ranking remains on the roadmap.

This evaluation layer already caught a real bug: the byte budget used to exclude the policy text, overshooting by ~800 bytes (fixed, regression-tested).

78 tests (incl. a deterministic eval layer). 0 runtime deps beyond yaml. 15 kB installed.

Install

dsh plugin --profile demo add dsh-auto-memory   # from npm (prebuilt)
dsh --profile demo                               # restart the profile

From source: npm install && npm run build && dsh plugin --profile demo add /abs/path. Requires @deepseek-ai/dsh >= 0.1.5-rc.2 (Node ^22.19 || >=24).

Configuration

Override in your profile's cordis.patch.yml (config replaces wholesale):

- id: auto-memory
  config:
    maxBytes: 4096          # injection budget
    memoryDir: D:/memories  # default: $DSH_HOME/memory
    enableUserScope: true   # false: user layer off on every path

How it works (60 seconds)

• Write: tool execute → name normalized to [a-z0-9-] (reserved names rejected) → cross-process file lock (official dsh-atomic-write) → atomic write → full index rebuild inside the lock.
• Inject: one dynamic section re-evaluated on every step assembly; reads the index synchronously, enforces the byte budget, neutralizes {{. Tool writes take effect on the very next request — no restart, ever.
• Audit: no custom session events (third-party types make dsh refuse to resume); everything flows through standard tool/call / tool/result.

Deep dives: design decisions · dsh source-level research · postmortem: shipping a PR to awesome-dsh-plugin

Roadmap

• P0 — typed store, four tools, prompt injection, scoped layers, crash safety
• P1 — auto-consolidation on session end, forgetting & eviction, recall expansion, human-gated bulk delete
• P2 — Web UI memory cards, token-cost / recall-quality benchmarks

License

MIT