dsh-cache-stabilizer
An MIT-licensed DeepSeek Harness plugin that improves the chance of provider prompt-cache reuse without hiding stale state.
It makes two semantics-preserving changes:
- Moves the working directory out of DSH's known default persona sentence and into the runtime-context snapshot. Different projects can then share the same system-prompt prefix while each request still receives the correct
cwd.
- Canonicalizes object-key order inside tool schemas. Tool order itself is already deterministic in DSH.
It also adds /cache, a human-only command that reports the provider's durable cacheReadTokens, uncached inputTokens, and cache-write tokens. It never invents a cache hit.
Install
dsh plugin --profile web add dsh-cache-stabilizer
Restart DSH, send a few messages, then enter /cache in a command-capable client.
For a custom profile, replace web with its profile name. To disable either optimization in a profile patch:
- id: dsh-cache-stabilizer
config:
relocateCwd: false
canonicalizeTools: false
Safety boundary
Only the exact sentence used by DSH's standard/headless coding persona is relocated. A custom persona that mentions {{cwd}} in another form is left unchanged because blindly moving arbitrary prose can change meaning. The plugin does not freeze tool catalogs, reuse stale context, proxy model responses, or implement a second cache.
DeepSeek's provider cache is automatic and depends on an exact prefix match from token zero. Storage and eviction remain provider-controlled.
Development
npm test
npm run check
