Turtle
f593ef5ab5
context/message previously defaulted to a <context source="…">…</context> wrapper. No model is trained on a <context> tag either, and message framing does not belong on the session surface: the surface projects the durable log, and a caller that wants a frame formats its own content — which the one heavy producer (workspace-context) already does with its own <system-reminder> frame, opting out via 'raw'. The tag only added machinery — ContextEnvelope plus an envelope field threaded through InjectOptions, HookContext, the context/message event, and the agent-loop inject/additionalContexts plumbing. context/message now projects its content verbatim as a user-role message, sharing one deriveEventMessage case with user/message and steering/message. ContextEnvelope and every envelope field are removed; context/message.meta still carries durable, model-hidden JSON state. Regenerated catalogs and website API; refreshed the three affected keyless snapshots (envelope field only; timestamps unchanged). Broadens and renames the steering Agent Note to cover both envelope removals as one decision. Agent Note: .agents/notes/implemented/simplification/2026-07-20-unwrap-injected-content-envelopes.md
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:echo # keyless mock-model REPL
pnpm run demo:repl # readline coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:tui # full-screen TUI coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:headless -- "task" # one-shot coding agent (needs DEEPSEEK_API_KEY)
pnpm run demo:cordis # self-referential 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.