0c2e773d67
Review finding, valid — the previous SDK fix covered only the non-default branch: in the default mode under Code Mode the wire filter dropped exit_plan_mode but the registry-rendered tools:sdk section still advertised its binding, offering default-mode agents a call that can only error and breaking the byte-identical claim (a no-dsh-mode deployment's registry never saw the tool, so its SDK never listed it). The SDK re-render extracts to one helper both branches share: the non-default branch passes the mode's visibility rule, the default branch hides exactly the exit binding. The pinning test now compares the default-mode SDK byte-for-byte against a bare deployment without dsh-mode — the strongest form of the invariant the RFC states.
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.