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https://github.com/deepseek-ai/deepseek-harness.git
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Tianyi Cui
e98c1c5d42
The first real agent wiring: DeepSeek V4 + the bash tool suite + stdio chat + JSONL persistence, runnable via yarn demo:coding (reads the gitignored repo-root .env through process.loadEnvFile). - examples/coding-agent: cordis.yml wiring both real plugin families (llm-deepseek with !!js env secrets; bash-local + tool-bash), a bash-only coding system prompt, a max-steps-guard plugin (bounds runaway turns via the agent/turn-continuation waterfall — abort() from step-end is a no-op by then), and a stdio UI with dimmed reasoning and exit-on-idle for piped stdin. - e2e (yarn test:e2e, key-gated): full-loop.e2e.ts runs a real model against the real bash tool; coding-task.e2e.ts is the swebench-style smoke — the model fixes a buggy add.js in a temp dir and the test re-runs node add.test.js itself rather than trusting the agent. - docs/cookbook: adding-a-package (the verified checklist), adding-a-tool (execute() contract, background pattern, seams), adding-an-llm-adapter (protocol obligations, mock-server testing, e2e policy). AGENTS.md layout/commands/secrets sections updated; architecture.md points at both examples and the cookbook. - vitest.e2e.config.ts: serialize test files + retry twice — parallel e2e files trip the shared internal key's concurrency quota. - fix: the !js YAML tag spelling in docs/JSDoc is actually !!js (js-yaml resolves custom tags under tag:yaml.org,2002:js).
52 lines
2.2 KiB
Markdown
52 lines
2.2 KiB
Markdown
# coding-agent
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The first REAL agent wiring: DeepSeek V4 + the bash tool suite + stdio chat
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+ JSONL persistence, loaded from `cordis.yml`. Where echo-agent proves the
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skeleton with mocks, this example is a usable coding assistant.
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## Run it
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```sh
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# repo root .env (gitignored) or exported env:
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# DEEPSEEK_API_KEY=sk-…
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# DEEPSEEK_BASE_URL=https://… # optional; defaults to the public API
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yarn demo:coding
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```
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Type a coding task. The agent's only tools are `bash` (+ `bash_output` /
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`bash_kill` for background tasks): file reads, writes, searches, and test
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runs all happen through shell commands, each in a fresh `bash -c` (the
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system prompt tells the model to pass `workdir` instead of `cd`). Reasoning
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streams dimmed; tool calls/results render inline.
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```
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> fix the failing test in /path/to/project
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[main turn 1] (reasoning…)
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[tool call] bash({"command": "node --test", "workdir": "/path/to/project"})
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[tool result] … [exit code: 1]
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…
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```
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## What each plugin demonstrates
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| Entry | Demonstrates |
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|---|---|
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| `llm-deepseek` | real `LlmAdapter` via config (`!!js process.env.…` secrets); swap one line to `@deepseek-ai/dsh-llm-pi-ai` for the library-backed twin |
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| `bash` (`dsh-bash-local`) + `tool-bash` | the executor seam + tool schemas as separate plugins |
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| `agent-loop` | agent created from config with a coding system prompt |
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| `src/session-jsonl.ts` | write-behind persistence on `session/event` + `session/flush` (copied from echo-agent) |
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| `src/stdio-chat.ts` | UI as a plugin; copied from echo-agent with reasoning-dimming and an exit-on-idle close handler for piped stdin. Example-local on purpose — extract a shared UI package when a third example needs it |
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## End-to-end tests (`yarn test:e2e`, key-gated)
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- `tests/full-loop.e2e.ts` — the canary: real model runs `echo e2e-ok`
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through the real bash tool; asserts `tool/call`/`tool/result` session
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events and the final answer.
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- `tests/coding-task.e2e.ts` — the swebench-style smoke: a temp dir holds
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`add.js` (with `a - b` where `a + b` belongs) and a failing
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`add.test.js`; the agent must fix the bug and verify. The test re-runs
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`node add.test.js` ITSELF and inspects the files — agent claims are not
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trusted.
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Both self-skip without `DEEPSEEK_API_KEY`.
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