DeepSeek Harness tools that run in your browser

DSH Toolbox is a free set of browser tools for DeepSeek Harness: sync sessions across machines, inspect session files, repair the session index, audit what each skill costs, clean up session files that grew too large, and check text or UI for template traces.

Try the De-AI Kit in your browser: paste text or CSS, get the lines that read like a template →

The tools

beta

DSH Sync Hub

Sync DSH sessions across machines

Same list on both machines, no lost sessions

How it works →stable

Zstd Frame Inspector

See inside a growing .zstd session file

Writes inside this file, and what the next sync sends

See a sample result →stable

Context Budget

How many turns before the context blows up

Which turn to compact, and room for one more task

See a sample result →beta

Session Purge

Which session files are large, with the backup and delete commands

Which files actually take the space, plus the backup-then-delete commands

See a sample result →stable

Session Index Doctor

Why a session is missing from the list

Session ids on disk that never reach the list

See a sample result →stable

Skill Load Audit

Which skill is eating your context

Skills ranked by context cost, archive the heavy ones first

See a sample result →beta

De-AI Kit

Check text and UI for template traces

Lines that read like a template, each with a fix

Open the checker →

Seven tools are live; more land as usage shows

Want a one-click version?

Start here

What is DeepSeek Harness — The dsh CLI, profiles, and where sessions live
Install DeepSeek Harness — Windows, macOS, Linux, and the two failures people hit first
Clean up session files — See which session files grew large, then back up and delete them
dsh CLI cheat sheet — Boot a profile, web flags, plugin commands, config dumps
Desktop vs dsh web — Why the desktop name is reserved, and what to run instead
Error reference — Five failures, each with its own page and one command
On Android — No app: run dsh web and open it from the phone
In Docker — A Dockerfile on Node 24, and the --host trap
The plugin conflict list — Which plugins conflict — 26 pairs that cannot share a profile
Plugin directory — 83 package pages: 21 official (16 profile packages plus 5 shared libraries) and 62 community plugins, grouped by what they do
Storage reference — Session formats, index fields, symptom to cause

Compared with

Why these tools

The list and the file are two different things

On one install with 114 sessions on disk, the workspace index knew 38 ids. The other 76 were invisible in the app. Printing that gap is what the Doctor is for.

Nobody wrote the format down

A session is an append-only stream of zstd frames, and one file here reached 22,832,359 bytes. The Inspector counts frames because that number explains why a sync feels slow.

These files are your conversations

So nothing is uploaded. Each tool is a page with JavaScript in it, and the only thing you download is a command-line tool you run yourself.

FAQ

Do I need to install anything?

No. Every tool is a static page. DSH Sync Hub itself is a command-line tool you download and self-host — still free.

Are my files uploaded?

Never. The inspector and calculator are plain JavaScript in the page; there is no backend to send to.

What is DSH?

DeepSeek Harness — a local agent runtime with web, desktop and terminal builds. It stores sessions on disk, which is why cross-machine sync is a problem at all.

Start with Sync Hub →