Tianyi Cui
84088300bc
Three findings from the PR-4 convergence round: (A) A root-undefined binding argument passed normalization untouched, so the sub-call DISPATCHED and only then failed the tool/code-dispatch append (Session.append rejects undefined event data) — a sub-call executed with no log record, violating the nothing-executes-unlogged contract. And the tool received the SAME object later handed to the append, so a tool mutating its args desynced the logged record from what was dispatched (or re-poisoned the append). jsonNormalizeArgs now rejects undefined up front with a model-correctable message and returns TWO independent parses of the canonical JSON text: the tool gets one, the event logs the sibling — identical by construction, mutation-proof. (B) The bridge built its bindings record with plain-object assignment, so a registered tool named __proto__ hit the prototype setter and silently vanished (the runtime host resolves binding names as own properties). The record is now null-prototype with defineProperty, mirroring the worker-side namespace build. (B) The header-pin sanity assertions ran only inside NON-pinning scenarios, so a class consisting solely of its pinning scenario (the two Code Mode classes) would accept a re-recorded pin carrying several headers or a header-delta. A fixtures meta-test now asserts every pinning fixture directly.
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.