Hypatia May
a26d03960a
One assistant message carrying several subagent calls now overlaps them under the rolling pool (maxParallelToolCalls) instead of serializing each foreground delegation behind an exclusive barrier; results still commit in model order. tool-subagent declares isConcurrencySafe: () => true for every call form: children work in their own sessions, a run never mutates the parent session, and sibling workspace coordination already belongs to the model for background, continuable, and workflow children. The former serial-execution pin flips to a parallel pin plus a gated genuine-overlap test, and the authored subagent-parallel snapshot pins the assembled transcript (tool/call, tool/call, tool/result, tool/result) with interchangeable twin children, which replay race-free under the existing first-call binding and createdAt harvest ordering. The provider seam now requires concurrent starts and continuable preparations for distinct children to isolate operation-local state, cancellation, settlement, and cleanup; a continuable gate test proves a cancelled preparation leaves no Agent or durable Session while its sibling persists independently. Closes deepseek-harness/deepseek-harness#1489
acp-agent example
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Automation-oriented Agent Client Protocol server over JSON-RPC stdio. It is intended for parent agents, subagent providers, and other programmatic clients, not as the product UI.
pnpm run demo:acp # needs DEEPSEEK_API_KEY (repo-root .env or env)
pnpm run demo:code-mode # same protocol with the Code Mode tool transport
The leaf loads the ACP app, DeepSeek adapter, sandboxed bash and filesystem stacks, one-shot approval policy, compaction, subagents, workflows, hooks, a derived session-query index, and repeat guard. The app creates one fresh agent per session/new, persists sessions to JSONL, and keeps stdout protocol-pure. Optional overlays add session queries, filesystem spill storage, Code Mode, or web fetching.
Protocol channel
Stdout carries only newline-delimited ACP JSON-RPC. @deepseek-ai/dsh-acp-demo installs no stdout logger; leaf additions must use stderr for diagnostics.
The automation contract — supported methods, baseline prompt content, committed-text output, and the intentionally absent UI surfaces — lives in @deepseek-ai/dsh-acp.
Session workspaces and permissions
Each session/new supplies an absolute cwd. Sandboxed bash and filesystem mutations resolve workspace-write against that session cwd, so concurrent sessions can use separate project roots; platform temporary roots remain shared writable scratch space (sandbox contract). DSH_PERMISSION_MODE selects workspace-write or danger-full-access for the deployment.
Under workspace-write, a model retry requesting wider sandbox access triggers session/request_permission with allow_once and reject_once. The client decides programmatically; dismissal or an unavailable answer fails closed. The selected outcome applies only to that retry and is recorded through the normal tool-result/audit path. The server never exposes a permission picker or persists client policy.