It helps prevent subtle failures where a tool compiles but reports the wrong permissions, exposes incomplete instructions, or silently handles errors in an unsafe way.

add-tool — Skill for Claude Code and Codex by caiwuu/Riot

add-tool

add-tool is a skill for Claude Code, Codex from caiwuu/Riot. It costs 54 tokens per session (1,692 once invoked), scanned C, original, no licence file.

A guide for adding a model-callable tool to Riot, including its interface, input schema, description, registration, error handling, and permission flags. A model-callable tool is an operation an AI model can request through the application’s tool API.

In plain words

What is it for?: Use it when defining a new Riot tool, implementing its required methods, converting failures into model-readable results, and deciding whether it is read-only or safe for concurrent use.
Why use it?: It helps prevent subtle failures where a tool compiles but reports the wrong permissions, exposes incomplete instructions, or silently handles errors in an unsafe way.

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when defining a new Riot tool, implementing its required methods, converting failures into model-readable results, and deciding whether it is read-only or safe for concurrent use.

Compare 6 skills from other repositories ↓

Install with agentmods

npx agentmods add skills/caiwuu/riot/add-tool

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.

Any agent

npx skills add caiwuu/Riot --skill add-tool

Clone the repo

git clone --depth 1 https://github.com/caiwuu/Riot

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/caiwuu/riot/add-tool/github.svg)](https://agentmods.dev/skills/caiwuu/riot/add-tool)

Your own site

<a href="https://agentmods.dev/skills/caiwuu/riot/add-tool"><img src="https://agentmods.dev/badge/skills/caiwuu/riot/add-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/caiwuu/riot/add-tool"><img src="https://agentmods.dev/badge/skills/caiwuu/riot/add-tool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,692 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00054	$0.01692
Opus 5.5	$0.00022	$0.00677
Sonnet 5.5	$0.00011	$0.00338
Haiku 4.5	$0.00005	$0.00169

Measured 2mo ago against content hash d5efecbb29a2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

add-tool scanned grade C with 1 finding 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.

Recursive force deletehighDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

`ls -la` 可以并行，`rm -rf` 必须独占。参考 `bash.rs` 的

.riot/skills/add-tool/SKILL.md · 117 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

2mo ago First seen · 117 lines · 54 tokens per session scan C d5efecbb29a2

Subscribe to this mod's changes

add-tool is a skill published in the GitHub repository caiwuu/Riot (20 stars, last pushed 2mo ago), with no licence file. It adds 54 tokens to every session and 1,692 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Building agents

add-tool next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
add-toolcaiwuu/Riot	Skill	20	2mo ago	none	C	54	Claude Code, Codex
imagegenopenai/codex	Skill	135k	today	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	100k	today	Apache-2.0	A	19	Claude Code
browser-automationopenclaw/openclaw	Skill	394k	today	MIT	A	36	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	80k	6d ago	MIT	A	200	Claude Code, Codex
next-cache-components-adoptionvercel/next.js	Skill	143k	today	MIT	A	95	Claude Code
chat-pet-sprite-creationmicrosoft/vscode	Skill	195k	today	MIT	A	53	Claude Code, Codex