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deepseek-harness/packages/bundle/sdk-app
Turtle f028f25667 refactor: remove runtime invariant plugins
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description, kind
description kind
SDK stdio application profile for users and maintainers launching a JSON-RPC harness runtime. package-bundle

@deepseek-ai/dsh-sdk-app

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Summary

The SDK stdio application as a dsh profile bundle over dsh-base. It inherits the base's disabled module-HMR policy; its patch sets the coding-agent persona, mounts an app-owned zero-option command provider, and starts dsh-sdk-jsonrpc-server only after that provider accepts the invocation. dsh --profile sdk --help therefore writes help and exits without claiming stdin or stdout. The standalone sdk-minimal bundle reuses the same startup provider with its own profile name.

Table of Contents


Use this package

The startup provider binds stdin EOF to the launcher's bounded successful shutdown. SDK protocol shutdown, SIGINT, and SIGTERM retain their owning server or launcher paths; disposal drains the root profile tree and persistence. Stdout is reserved for newline-delimited JSON-RPC frames. The bundle disables model-generated session titles because the SDK exposes no title surface; deterministic fallback titles remain durable without an auxiliary model request. The inherited projection cache checkpoints SDK-created sessions for later consumers; its durability barrier flushes each covered log prefix before publishing the cache row and may split otherwise coalesced JSONL runs. A deployment selects a different complete composition through profile bundles and patch files, not another app bin.

Config Default Behavior
profile sdk Profile name rendered in command help; a bundle mounting this provider sets its own shipped profile name.

DSH_MAX_TOKENS_AS_SUCCESS retains the SDK deployment mapping: unset or JSON true reports token-limited subagent completion as accepted, while JSON false reports it as an error. Provider/model and workspace cwd arrive through the SDK initialization request; the base profile owns adapters, tools, persistence, policy, settings, and credentials.

The SDK uses the base read, write, and edit defaults. To add str_replace_editor, use the explicit insertion patch in the base configuration guide. The standalone sdk-minimal profile owns its separate tool selection.

The packaged Python runtime enables the Office runtime query and skills by default. DSH_PRIMARY_RUNTIME overrides its bundled payload; an empty value disables both rows. Source launches without a carrier default remain opt-in. The tool reads the payload in place. Profile patches can disable skill-office or replace its assetRoot independently of workspace-dependencies; filesystem skills with the same name take precedence over bundled skills. See the runtime package for packaging and configuration.


Model Experience

SDK coding-agent persona

What the model sees

The profile supplies You are a coding agent powered by the {{model}} model. before first-party guidance and Your working directory is {{cwd}}. in a separate persona suffix. The exact SDK initialization route and session cwd resolve the placeholders. Default file tool schemas include read, write, and edit; they omit str_replace_editor.

Token effect

One short stable persona plus the data-dependent base prompt sections and selected tool schemas.

KV Cache effect

Stable for a fixed profile, provider, model, and tool roster. Profile changes take effect on the next process because the shipped SDK profile uses startup-only patches.

Known Limitations and Deferred Work

  • A profile can omit the SDK server — a custom profile selected by the TypeScript client must retain this bundle or another dsh-sdk-jsonrpc-server row; client initialization fails when no peer answers.
  • User plugins can violate stdout purity — profile and per-launch patches are trusted application composition. The shipped bundle writes no non-protocol stdout, but it cannot contain an arbitrary inserted plugin.
  • Configuration changes require restart — the sdk-app bundle disables HMR in YAML so one stdio connection never observes a replacement server or Agent dependency.

Dev Note

Working context for maintainers — click to expand

None.