# ⚡ dsh-fast - **1024 store channel**: `npm i -g dsh1024` once, then `dsh1024 plugin --profile web add dsh-fast` (counts toward the [deepseek1024.com](https://deepseek1024.com) install ranking). [![Gitee](https://img.shields.io/badge/Gitee-mirror-c71d23?logo=gitee)](https://gitee.com/perrylink/dsh-fast) **Read-only performance diagnostics for DeepSeek Harness.** *Observes the session event stream — never the model hot path — and reports where latency and context budget actually go.* > **Official repository.** This is the only official repository of dsh-fast, maintained by PerryLink. Same-name repositories under other accounts are not affiliated. [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](LICENSE) [![DSH plugin](https://img.shields.io/badge/dsh--plugin-✅-green)](https://github.com/topics/dsh-plugin) [![dsh-doctor](https://raw.githubusercontent.com/PerryLink/dsh-plugin-doctor/main/badges/PerryLink__dsh-fast.svg)](https://github.com/PerryLink/dsh-plugin-doctor#verified-徽章) [![Node](https://img.shields.io/badge/node-%5E22.19%20%7C%7C%20%3E%3D24-brightgreen.svg)](#) [![CI](https://img.shields.io/github/actions/workflow/status/PerryLink/dsh-fast/ci.yml?branch=main&label=CI)](https://github.com/PerryLink/dsh-fast/actions) [![Version](https://img.shields.io/github/v/tag/PerryLink/dsh-fast?label=version)](https://github.com/PerryLink/dsh-fast/releases) [![npm version](https://img.shields.io/npm/v/dsh-fast)](https://www.npmjs.com/package/dsh-fast) [![npm downloads](https://img.shields.io/npm/dm/dsh-fast)](https://www.npmjs.com/package/dsh-fast) [English](README.md) · [简体中文](README-zh.md) · [Español](README-es.md) · [Português](README-pt.md) · [हिन्दी](README-hi.md)
--- ## Compatibility - DeepSeek Harness `dsh-v0.1.6-alpha.2` (adapted 2026-09-18): the session surface is read through the optional `sessionQuery` service — the deprecated synchronous `Session.eventAt(seq)` accessor is gone, with an equivalent synchronous read as the fallback — and every registration now lives in one lifecycle effect that releases them in reverse order. Internal implementation change: the reported metrics are identical for the same log. Verified 2026-09-18 against the local gate chain (dual typecheck rulers + 70 tests); the compat workflow re-runs the profile install smoke against the published pins. - Node `^22.19.0 || >=24.0.0`, ESM only (`"type": "module"`). - Peer dependencies: `@deepseek-ai/cordis ^4.0.2`, `@deepseek-ai/schemastery ^3.18.2`, and `@deepseek-ai/dsh-session`, `@deepseek-ai/dsh-tools`, `@deepseek-ai/dsh-commands`, `@deepseek-ai/dsh-compaction`, `@deepseek-ai/dsh-session-query`, `@deepseek-ai/dsh-storage-domain` at `>=0.1.2-rc.1 <0.2.0 || >=0.1.5-alpha.1 <0.2.0 || >=0.1.6-0 <0.2.0` (devDependencies pin `0.1.5-rc.2`); the `0.1.2-rc.1` line stays supported at runtime through a structural fallback to the pre-0.1.5 `header.system`. ## What you get - **Session load timing** — publication-to-first-request latency, classified `open` (fresh) vs `restore` (seeded/resumed), plus the restored seed-event count. - **Spill-hit statistics** — how many tool results were spilled to a session-scoped artifact (detected from the durable spill notice). - **Compaction count and trigger** — total compactions, split `manual` (slash command) vs `automatic` (pressure), and total shadowed tokens. - **Context-injection volume** — system-prompt (AGENTS.md + skills + persona), tool-schema, and surface tokens with their shares of the total; the surface bucket is conversation history only (the meter's surface includes the system node on `0.1.5-alpha.1`, which dsh-fast subtracts). - **LLM cache hit rate** — input / cache-read / cache-write / output tokens aggregated from provider usage, plus the derived hit rate. - **Optimization suggestions** — threshold-driven notes (trim skills, tighten tool schemas, compact earlier, enable prompt caching, enable spill-policy, …). - **Async sampling** — metrics are folded O(1) per event and snapshotted on a timer, never on the append path. ## Quick start ### git channel ```sh # From a scratch profile (pins the commit; runs the self-contained `prepare` build) dsh plugin --profile demo add "github:YOUR_ORG/dsh-fast#" # The profile's pnpm-workspace.yaml gains an allowBuilds entry for dsh-fast on first add. ``` ### npm channel ```sh dsh plugin --profile demo add dsh-fast ``` Both channels install the bundle row (see `cordis.patch.yml`) into the profile's `dsh.profile.bundles` stack and take effect on restart. ## Install & uninstall ```sh dsh plugin --profile demo add dsh-fast # install dsh plugin --profile demo remove dsh-fast # uninstall ``` Verify the row mounts: `dsh --profile demo --dump-config | grep dsh-fast`. ## Configuration All tunables are Schemastery `Config` fields; invalid values fail the profile load loudly. | Key | Default | Description | | --- | --- | --- | | `enabled` | `true` | Master switch; `false` mounts nothing. | | `privacy.includeCwd` | `false` | Include the sanitized session working directory in reports. | | `sampling.snapshotIntervalMs` | `60000` | How often active sessions are sampled (ms). | | `sampling.maxHistorySamples` | `20` | Samples retained per session in the durable history. | | `thresholds.systemPromptTokens` | `20000` | Warn when the system prompt exceeds this many tokens. | | `thresholds.toolSchemaTokens` | `8000` | Warn when the tool schema exceeds this many tokens. | | `thresholds.surfaceTokens` | `60000` | Warn when the conversation surface exceeds this many tokens. | | `thresholds.cacheHitRateFloor` | `0.1` | Warn when the cache hit rate falls below this (0..1). | | `thresholds.compactionCountWarn` | `10` | Warn once this many compactions have triggered. | | `thresholds.compactionShadowTokens` | `40000` | Warn when the average shadowed token count per summary exceeds this. | | `spill.detectSpilledResults` | `true` | Detect spilled tool results from the durable notice marker. | ## Tools & surfaces - **`/fast`** — a human slash command that prints the current session's health report: load timing, spill, compaction, context-volume ranking, cache hit rate, and suggestions. - **`fast_report`** — a model tool returning the same report as structured JSON (so the model can reason over it), with a human-readable text render. ## Permissions & data `dsh-fast` consumes only public seams: `session/*` and `agent/*` events, the optional `ctx.tokenMeter`, `ctx.storageDomain`, `ctx.commands`, and `ctx.tools`. It is strictly read-only over the session log — it never mutates the model request, tool results, or the session surface. Metrics are persisted to the `dsh_fast` storage domain (one bounded history per session), not to the session log. Report identity and the optional working directory are sanitized before any display or durable write. ## Security boundaries - **Read-only, zero model-path overhead** — folding is O(1) per event; sampling runs on a timer. - **No network, no credential handling** — the plugin makes no outbound requests and stores nothing sensitive. - **Fail-loud configuration** — every tunable is validated at mount; invalid bounds throw. - **Sanitized display/durable data** — control characters are stripped and strings are budgeted; `cwd` is off by default and path-truncated when enabled. - **Reversible registrations** — every contribution goes through `ctx.effect()` / `ctx.on()` / `register()`, so uninstall and hot reload are clean. ## Known limitations - **Storage domain, not session events** — rc.2 `Session.append` offers no `ignorable` marker and no external event-registration surface, so a custom `fast/*` session event would make the persistence coordinator refuse the log on restore. Metrics are therefore persisted to the storage domain; the raw events remain the reconstructable source of truth. - **Spill detection is heuristic** — it reads the durable spill notice (`Full … stored at:`); no dedicated session event exists. - **System prompt is one bucket** — AGENTS.md, skill directory, and persona are all part of the assembled system prompt; since `0.1.5-alpha.1` it is surface node 0 (a `system/message`) and carries no per-section token accounting, so they are reported together. - **Load timing starts at publication** — the disk-read portion of a restore happens before `session/created` (owned by `sessionPersistence`) and is not observable from this plugin's allowed events; the reported duration is publication-to-first-request. - **Degradations are announced once** — a host without `tokenMeter` falls back to heuristic token pricing, a host without `systemPrompt` attributes the whole prompt to one bucket, and a failing `inspector` outlet is ignored; each of these now says so once per process instead of changing what the numbers mean in silence. ## Development ```sh pnpm install pnpm run typecheck && pnpm run typecheck:ci pnpm test pnpm run build pnpm run verify:self-contained && pnpm run verify:artifacts node scripts/check-readme-sync.mjs pnpm pack ``` ## Topics `dsh`, `dsh-plugin`, `deepseek-harness`, `deepseek`, `cordis`, `performance`, `diagnostics`, `profiling`, `context-engineering`, `llm-cache` ## Contributors Thanks to everyone who has contributed to `dsh-fast`: - **[PerryLink](https://github.com/PerryLink)** — author and maintainer: designed and built the read-only diagnostics (session-load timing, spill-hit counts, compaction metrics, context-injection volume, LLM cache hit rate), the `/fast` command and `fast_report` tool, the `dsh_fast` storage domain, and the five-language documentation. ## PerryLink DSH Plugin Family This project is one of the [40 DeepSeek Harness plugins](https://github.com/PerryLink) maintained by [PerryLink](https://github.com/PerryLink). If this one helps you, the others likely will too: | Plugin | One-liner | |---|---| | **[dsh-auto-review](https://github.com/PerryLink/dsh-auto-review)** | Second-model auto-review on the approval chain, fail-closed by default | | | **[dsh-background-agents](https://github.com/PerryLink/dsh-background-agents)** | Durable background child agents with a Web UI sidebar, messaging and interrupt | | | **[dsh-budget](https://github.com/PerryLink/dsh-budget)** | Cost governance for DeepSeek Harness: budgets, carbon, and latency in one panel. | | | **[dsh-checkpoint-rewind](https://github.com/PerryLink/dsh-checkpoint-rewind)** | Claude Code /rewind-equivalent: snapshots, session forks, one-shot restore | | | **[dsh-claude-move](https://github.com/PerryLink/dsh-claude-move)** | Migrate Claude Code sessions, memory, skills and CLAUDE.md into DSH | | | **[dsh-click](https://github.com/PerryLink/dsh-click)** | Cross-platform native desktop control for DeepSeek Harness — Windows first. | | | **[dsh-composer-history](https://github.com/PerryLink/dsh-composer-history)** | Terminal-style input history for the web composer: arrows, Ctrl+R search | | | **[dsh-data-quality](https://github.com/PerryLink/dsh-data-quality)** | Dataset quality checks and citation cross-checks (the optional numeric bridge consumed here) | | | **[dsh-defend](https://github.com/PerryLink/dsh-defend)** | Prompt-injection, jailbreak, and secret-leak defense for DeepSeek Harness. | | | **[dsh-doublecheck](https://github.com/PerryLink/dsh-doublecheck)** | Engineering-discipline guard: requirements grill, test gates, adversary review | | | **[dsh-draw](https://github.com/PerryLink/dsh-draw)** | Unified static-image generation routing for DeepSeek Harness. | | | **[dsh-fund-research](https://github.com/PerryLink/dsh-fund-research)** | Deterministic research reports for Chinese public mutual funds | | | **[dsh-github](https://github.com/PerryLink/dsh-github)** | GitHub PR/issues integration for DSH, every write gated by approval | | | **[dsh-industry-research](https://github.com/PerryLink/dsh-industry-research)** | Industry research orchestration that seals its deliverables through this plugin's `ctx.researchReport.assemble` | | | **[dsh-library](https://github.com/PerryLink/dsh-library)** | Local document knowledge base for DeepSeek Harness. | | | **[dsh-local-ai](https://github.com/PerryLink/dsh-local-ai)** | Local-model (Ollama) integration for DeepSeek Harness. | | | **[dsh-lsp-actions](https://github.com/PerryLink/dsh-lsp-actions)** | LSP diagnostics, formatting, completion, code actions and rename over language servers | | | **[dsh-mask](https://github.com/PerryLink/dsh-mask)** | PII masking middleware: anonymize at the model boundary, restore at the display layer | | | **[dsh-mcp-panel](https://github.com/PerryLink/dsh-mcp-panel)** | Read-only MCP runtime panel: /mcp command + Settings tab with status, tools and errors | | | **[dsh-memento](https://github.com/PerryLink/dsh-memento)** | Approval-gated cross-session memory: ctx.memory seam + SQLite + memory tool | | | **[dsh-observe](https://github.com/PerryLink/dsh-observe)** | OpenTelemetry and Langfuse observability exporter for DeepSeek Harness. | | | **[dsh-output-styles](https://github.com/PerryLink/dsh-output-styles)** | Claude Code outputStyles-equivalent runtime style switching | | | **[dsh-reach](https://github.com/PerryLink/dsh-reach)** | Multi-channel approval/question bridge: WeChat/Telegram/Feishu, session console | | **[dsh-permission-rules](https://github.com/PerryLink/dsh-permission-rules)** | Claude Code-style declarative allow/deny/ask permission rules with audit | | | **[dsh-personal-directive](https://github.com/PerryLink/dsh-personal-directive)** | Personal directive injector with top-bar toggle (framework edition) | | **[dsh-plugin-guide](https://github.com/PerryLink/dsh-plugin-guide)** | Plugin-development knowledge base as an on-demand agent skill | | | **[dsh-plugin-doctor](https://github.com/PerryLink/dsh-plugin-doctor)** | Zero-dependency static + sandbox smoke detector for DSH plugins | | | **[dsh-research-report](https://github.com/PerryLink/dsh-research-report)** | Verifiable research-report engine: content-addressed evidence ledger and sealed versions | | | **[dsh-score](https://github.com/PerryLink/dsh-score)** | Multi-dimensional quality scoring for DeepSeek Harness plugins. | | | **[dsh-session-pin](https://github.com/PerryLink/dsh-session-pin)** | Pin sessions in the Web sidebar with durable ordering | | | **[dsh-session-sync](https://github.com/PerryLink/dsh-session-sync)** | Cross-device session sync for DeepSeek Harness — a dedicated git mirror of your session store. | | | **[dsh-skill-pack-security](https://github.com/PerryLink/dsh-skill-pack-security)** | Security-audit skill pack: secret scan, dependency and supply-chain review | | | **[dsh-talk](https://github.com/PerryLink/dsh-talk)** | Voice-first session loop for DeepSeek Harness: talk to it, hear it answer. | | | **[dsh-test-drive](https://github.com/PerryLink/dsh-test-drive)** | Isolated install-and-smoke test drives for DeepSeek Harness plugins. | | | **[dsh-ticktick](https://github.com/PerryLink/dsh-ticktick)** | TickTick/Dida365 task bridge: session-header panel + 11 tools | | **[dsh-translate](https://github.com/PerryLink/dsh-translate)** | Vendor parameter translation and deterministic JSON repair for DeepSeek Harness. | | | **[dsh-wechat](https://github.com/pan17/dsh-wechat)** | WeChat ↔ DSH bridge (Tencent iLink bot): text/image/file/voice, approvals in chat | | **[dsh-autotier](https://github.com/PerryLink/dsh-autotier)** | Automatic strong/cheap model-tier routing with deterministic risk guards and a `/tier` command | | | **[dsh-catalog](https://github.com/PerryLink/dsh-catalog)** | DSH Desktop Market standard catalog source for the PerryLink family | | | **[dsh-cert-mcp](https://github.com/PerryLink/dsh-cert-mcp)** | Read-only MCP server exposing the certification registry: grades, snapshots and five-dimension evidence | | | **[dsh-kit](https://github.com/PerryLink/dsh-kit)** | One-command starter pack that installs the core family | | | **[dsh-plugin-certification](https://github.com/PerryLink/dsh-plugin-certification)** | Community certification registry with repro-checkable grades and badges | | | **[dsh-plugin-kit](https://github.com/PerryLink/dsh-plugin-kit)** | Shared zero-runtime-dependency toolkit for the PerryLink DSH plugins | | | **[dsh-plugin-portal](https://github.com/PerryLink/dsh-plugin-portal)** | Zero-dependency static portal rendering the whole plugin family as one page | | | **[dsh-plugin-upgrade-015](https://github.com/PerryLink/dsh-plugin-upgrade-015)** | Merged `0.1.3-alpha.1` → `0.1.5-rc.1` upgrade corridor card plus a zero-dependency seam scanner | | | **[dsh-team-rooms](https://github.com/PerryLink/dsh-team-rooms)** | Cross-session team rooms: shared message bus, task board and timeline | | ### Install from the DSH Desktop Market All PerryLink plugins are browsable in the built-in DSH Desktop Market: **Market → Sources → add source → paste** `https://perrylink-dsh-catalog.perrylink.workers.dev/catalog-source.json` **→ select it**. Installation still goes through the Market's npm-identity verification and your confirmation. ## License Apache-2.0 — see [LICENSE](LICENSE).