A collection of common developer utilities for dates, hashes, UUIDs, encoding, passwords, regular expressions, and AES encryption. A UUID is a unique identifier, and a regular expression is a pattern used to validate or find text.

Use it to convert or parse times, calculate hashes, create UUIDs and passwords, encode or decode text, test regular expressions, or encrypt and decrypt with AES.

It puts small data-processing tasks in one place instead of requiring separate commands or scripts. It can save time when converting values, checking text, or creating test data.

devtool — Skill for Claude Code and Codex by fisker086/AIOps

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 fisker086/AIOps --skill devtool

Clone the repo

git clone --depth 1 https://github.com/fisker086/AIOps

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/fisker086/aiops/devtool/github.svg)](https://agentmods.dev/skills/fisker086/aiops/devtool)

Your own site

<a href="https://agentmods.dev/skills/fisker086/aiops/devtool"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/devtool/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/fisker086/aiops/devtool"><img src="https://agentmods.dev/badge/skills/fisker086/aiops/devtool.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 453 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.

Model	Per session	Once invoked
Fable 5.1	$0.00022	$0.00453
Opus 5.5	$0.00009	$0.00181
Sonnet 5.5	$0.00004	$0.00091
Haiku 4.5	$0.00002	$0.00045

Measured 2mo ago against content hash e8353c44275c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

devtool 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.

skills/devtool/SKILL.md · 61 lines

What it actually says

DevTool Skill

All-in-one development utilities tool. Use builtin_devtool tool with the following operations:

Operations

1. datetime

now: Get current time in various formats
convert: Convert time between timezones
parse: Parse a timestamp string
relative: Calculate relative time

2. hash

Calculate hash values:

sha1, sha256, sha512
bcrypt: Hash password with bcrypt

3. uuid

Generate UUIDs:

v4: Random UUID v4

4. encode/decode

base64_encode, base64_decode
base58_encode, base58_decode
url_encode, url_decode
hex_encode, hex_decode

5. password

Generate secure passwords. Parameters:

length: Password length (default 16)
use_uppercase: Include uppercase letters (default true)
use_lowercase: Include lowercase letters (default true)
use_numbers: Include numbers (default true)
use_special: Include special chars (default true)

6. regex

validate: Validate string against regex pattern
match: Find matches in text

7. aes

aes_encrypt: AES encryption
aes_decrypt: AES decryption

Parameters

operation: The operation to perform
input: Input string (for hash, encode, decode, regex)
param: Additional parameter (timezone, length, etc.)
length: Password length
use_uppercase: Include uppercase (true/false)
use_lowercase: Include lowercase (true/false)
use_numbers: Include numbers (true/false)
use_special: Include special chars (true/false)

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 · 61 lines · 22 tokens per session scan A e8353c44275c

Subscribe to this mod's changes

devtool is a skill published in the GitHub repository fisker086/AIOps (22 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 22 tokens to every session and 453 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 2026-08-30.

devtool next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
devtoolfisker086/AIOps	Skill	22	4mo ago	Apache-2.0	A	22	Claude Code, Codex
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code