ds-code: Skill for Claude Code

.claude/skills/tool/SKILL.md

tool is a skill for Claude Code from qddidi/ds-code. It costs 17 tokens per session (238 once invoked), scanned A, original, MIT.

A workflow for creating or changing an Agent tool in ds-code. It covers the tool's inputs, outputs, registration, permissions, and tests.

In plain words
What is it for?
Use it to implement or adjust tools, define their JSON input schema, connect them to the registry, handle errors, test permission boundaries, and update documentation when the visible tool list changes.
Why use it?
It helps ensure new tools fit the project and require confirmation before writing, deleting, running commands, or changing external state.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

This is qddidi/ds-code's own configuration. It tells Claude Code how to work on ds-code itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ds-code configures →

Reuse

Borrowing it

Nothing to install: this file belongs to qddidi/ds-code. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/qddidi/ds-code/master/.claude/skills/tool/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/qddidi/ds-code

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 tool

README.md
[![agentmods](https://agentmods.dev/badge/skills/qddidi/ds-code/tool/github.svg)](https://agentmods.dev/skills/qddidi/ds-code/tool)
Your own site
<a href="https://agentmods.dev/skills/qddidi/ds-code/tool"><img src="https://agentmods.dev/badge/skills/qddidi/ds-code/tool/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 tool

Your own site · 80×15
<a href="https://agentmods.dev/skills/qddidi/ds-code/tool"><img src="https://agentmods.dev/badge/skills/qddidi/ds-code/tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 238 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 $0.00017 $0.00238
Opus 5.5 $0.00007 $0.00095
Sonnet 5.5 $0.00003 $0.00048
Haiku 4.5 $0.00002 $0.00024

Measured 2mo ago against content hash 8e63de4e19b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tool 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 2mo 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.

.claude/skills/tool/SKILL.md · 23 lines

What it actually says

用于实现新的 Agent 工具或调整已有工具行为。

执行流程:

  1. 阅读 src/tools/types.ts、工具 registry、权限逻辑和相近工具实现。
  2. 明确工具边界、输入 schema、输出 ToolResult 和是否需要权限。
  3. 在 src/tools/ 做最小实现并注册;写入、删除、执行命令或影响外部状态的工具必须要求确认。
  4. 增加或更新 test/tools/ 测试,覆盖成功、参数错误、权限和关键边界。
  5. 仅当用户可见工具列表或测试计划变化时更新相关文档。
  6. 运行目标测试、相关测试和 pnpm build。

约束:参数使用 OpenAI-compatible JSON Schema;工具层错误返回 ToolResult;不使用 any;不自动提交。

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. 2mo ago First seen · 23 lines · 17 tokens per session scan A 8e63de4e19b2

Subscribe to this mod's changes

tool is a skill published in the GitHub repository qddidi/ds-code (10 stars, last pushed 5mo ago), licensed MIT. It adds 17 tokens to every session and 238 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 2026-08-31.

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