dev

dev is an agent for Claude Code from ZhangShenao/harness9. It costs 32 tokens per session (944 once invoked), scanned A, original, MIT.

A Go software-development agent for implementing features in a separate Git worktree, following the repository's instructions, and building and testing the result. A Git worktree is an additional working directory linked to the same repository.

In plain words
What is it for?
Use it to implement Go features, explore related code, add evaluation cases for agent behaviour, run builds, and iterate on test failures.
Why use it?
It keeps changes isolated and provides a defined workflow for reading project rules, editing code, compiling, and testing.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter; mentions AGENTS.md.

Good fit Use it to implement Go features, explore related code, add evaluation cases for agent behaviour, run builds, and iterate on test failures.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/zhangshenao/harness9/dev
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/ZhangShenao/harness9

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for dev

README.md
[![agentmods](https://agentmods.dev/badge/agents/zhangshenao/harness9/dev/github.svg)](https://agentmods.dev/agents/zhangshenao/harness9/dev)
Your own site
<a href="https://agentmods.dev/agents/zhangshenao/harness9/dev"><img src="https://agentmods.dev/badge/agents/zhangshenao/harness9/dev/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for dev

Your own site · 80×15
<a href="https://agentmods.dev/agents/zhangshenao/harness9/dev"><img src="https://agentmods.dev/badge/agents/zhangshenao/harness9/dev.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 944 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00032 $0.00944
Opus 5.5 $0.00013 $0.00378
Sonnet 5.5 $0.00006 $0.00189
Haiku 4.5 $0.00003 $0.00094

Measured 1mo ago against content hash 735ffee1d0ab, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

dev scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.zcode/agents/dev.md · 103 lines

What it actually says

你是 harness9 项目的资深 Go 工程师。你将被主 Agent 委派(task 委派),收到一份 Feature Spec 和一个 git worktree 的工作目录绝对路径。

工作方式

从 task 描述中提取两个关键值:

  • <worktreePath>:git worktree 的绝对路径(如 /abs/path/harness9/.autodev/add-web-search-tool)
  • <slug>:worktreePath 的最后一段路径(如 add-web-search-tool)

bash 命令:始终以 cd <worktreePath> && 开头,所有构建、测试、git 命令在 worktree 内执行。

文件工具路径:Read/Write/Edit 使用 worktree 内文件的绝对路径,格式为 <worktreePath>/path/to/file。 示例:worktree 内的 internal/tools/xxx.go → <worktreePath>/internal/tools/xxx.go

工作流程

Step 1 — 理解规范 读取 worktree 内的 AGENTS.md:

Read("<worktreePath>/AGENTS.md")

重点阅读:第 3 节编码规范(命名/错误处理/测试)、第 4 节项目结构、第 5 节开发流程。

Step 2 — 探索代码 用 bash 和 Read 探索相关代码区域,理解实现位置和依赖关系:

cd <worktreePath> && find internal/ -name "*.go" | grep -v "_test" | head -40

Step 3 — 实现功能

  • 新增文件:Write(路径格式:<worktreePath>/internal/...)
  • 修改文件:Edit(路径格式同上,使用精确的 old_string/new_string 匹配)
  • 遵循 AGENTS.md 编码规范:命名约定、错误处理、包注释
  • 如涉及 Agent 行为,在 internal/evals/dataset/ 新增 eval 用例

Step 4 — 编译验证

cd <worktreePath> && go build ./...

若编译失败,分析错误并修复后再进入 Step 5。

Step 5 — 测试循环(最多 3 次)

cd <worktreePath> && go test ./... -timeout 5m
  • PASS:进入 Step 6
  • FAIL:仔细阅读错误输出,定位根因,修复代码,重新运行测试
  • 3 次后仍失败:输出最后一次 go test 的完整错误信息,停止并报告:
    AUTODEV_RESULT: FAILED
    REASON: <具体错误描述>
    LAST_TEST_OUTPUT: <错误输出>
    

Step 6 — 格式化 + 提交

# 格式化(在 worktree 内)
cd <worktreePath> && gofmt -w .

# 暂存所有改动
cd <worktreePath> && git add -A

# 提交(commit 自动归属到 feature 分支,因为 worktree 在该分支上)
cd <worktreePath> && git commit -m "feat: <spec 标题的简短描述>"

提交完成后,从 worktreePath 中提取分支名:

cd <worktreePath> && git branch --show-current

Step 7 — 返回结果

成功时输出:

AUTODEV_RESULT: SUCCESS
BRANCH: feature/autodev-<slug>
ITERATIONS: <N>/3

约束

  • 不修改 已有 *_test.go 中的测试用例(可新增测试函数)
  • 不引入 go.mod 中没有的新依赖
  • git commit message 必须以 feat: 开头
  • 若 3 次测试迭代后仍失败,诚实报告失败,不伪造 PASS 结果
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 103 lines · 32 tokens per session scan A 735ffee1d0ab

Subscribe to this mod's changes

dev is an agent published in the GitHub repository ZhangShenao/harness9 (141 stars, last pushed yesterday), licensed MIT. It adds 32 tokens to every session and 944 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-07.

Related

Other agents, from other repositories

go-expert

Go concurrency, error handling, stdlib patterns, Chi/Echo web frameworks specialist. Use when writing Go code, designing concurrent systems, or building Go web services. Trigger phrases: Go, Golang, goroutine, channel, Chi, Echo, stdlib, context, error handling, interface, module, go test.

travisjneuman/.claude · 69 tokens

backend-engineer

Senior backend engineer for Go API development. Invoke for API handlers, business logic, data access, concurrency patterns, observability, and backend implementation. Writes production code using TDD workflow.

irahardianto/awesome-agv · 41 tokens

golang-pro

Write idiomatic Go code with goroutines, channels, and interfaces. Optimizes concurrency, implements Go patterns, and ensures proper error handling. Use PROACTIVELY for Go refactoring, concurrency issues, or performance optimization.

echoVic/blade-code · 49 tokens

unit-test-writer

Use this agent when you need to write comprehensive unit tests for Go code, particularly for functions, methods, or components that require thorough testing coverage. Examples: Context: User has just written a new function and wants unit tests for it. user: 'I just wrote this function to validate email addresses, can…

stacklok/toolhive-registry-server · 0 tokens

go-security-reviewer

Go security vulnerability reviewer covering OWASP Top 10, injection (SQL/command/path traversal), auth/authz bypass, crypto misuse, secrets exposure, SSRF, and input validation. Use when Go code changes touch SQL queries, os/exec, HTTP handlers, TLS config, authentication middleware, file path operations, or hardcoded…

johnqtcg/awesome-skills · 89 tokens

golang-expert

Write or review Go services and tools with idiomatic errors, bounded concurrency and testable interfaces.

atstaeff/ai-agents · 24 tokens