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74502fa8c2
Carved out of #170 per review feedback — the foundation the workflow tool builds on, now standing alone on master: - dsh-tools: the structured-output JSON Schema subset (StructuredOutputSchema, assertSupportedOutputSchema, validateStructuredValue) — rejects loud outside the enforced subset, listing every violation - dsh-subagent: SubagentStartRequest.outputSchema / SubagentResult.structured become a real capability; the service rejects a schema'd request whose provider lacks it - dsh-subagent-inprocess: the shared structured runtime — one global structured_output capture tool, a prepend final-assembly listener that strips the placeholder for plain agents and swaps in the run's own schema (plus the calling instruction as a trailing section) for structured children, an agent/turn-continuation veto once captured, and the capture/nudge loop in the run driver (structuredNudgeRetries, cancellation honored mid-nudge); lifetime refcounted by backends and live runs - subagent-spawn / subagent-fork flip outputSchema: true One deliberate divergence from the #170 revision: the backends do NOT add 'tools' to their plugin inject. Doing so deferred their apply past the todo plugin, and the delegation tool mirrors provider lifecycle — so the model-visible tool order of every existing prompt changed, invalidating every recorded snapshot fixture. The runtime now gates its capture-tool registration on tools availability itself (sync when live, a scoped inject fiber when the Loader starts the backend first), keeping this PR byte-invisible to existing transcripts: all 35 snapshot scenarios pass against master's fixtures unchanged.
DeepSeek Harness
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The DeepSeek Harness SDK is a plugin-based SDK for building agent harnesses.
Development
This monorepo is built on the Cordis framework (vendored as source under vendor/), microkernel-style: everything is a plugin.
pnpm install
pnpm run test # vitest
pnpm run demo:repl # REPL agent demo (needs DEEPSEEK_API_KEY)
pnpm run demo:acp # ACP server agent demo (needs DEEPSEEK_API_KEY)
For humans, start with the development guide for local setup, hooks, environment variables, and quality gates, then read the architecture design and documentation graph index before package work. Local context lives in packages/ and vendor/.
For agents, follow AGENTS.md.