name: dev-toolkit description: Developer utilities — hashing, unit conversion, timezone math, expressions, DNS lookups, text transforms, geocoding. version: 1.0.0 metadata: openclaw: emoji: "🧰" homepage: https://agentutil.net always: false

dev-toolkit

Seven developer utility APIs accessible through one skill. When you need to hash, convert, calculate, look up, or transform — dispatch to the right tool.

When to Activate

Use this skill when you need to:

• Hash or encode data (SHA-256, HMAC, base64, hex, UUID generation)
• Convert units — currencies with live rates, physical units (80+ across 8 categories), or encodings
• Do timezone math — current time anywhere, convert between zones, date arithmetic, epoch conversion
• Evaluate expressions — safe math with variables, statistics, percentage calculations
• Look up DNS — A/MX/TXT records, reverse DNS, WHOIS, IP geolocation
• Transform text — slugify, regex, diff, markdown/HTML conversion, JSON manipulation
• Geocode — address to coordinates, coordinates to address, great-circle distance

Tool Dispatch

Match the task to the right service:

Quick Examples

Hash a string:

curl -X POST https://hash.agentutil.net/v1/hash \
  -H "Content-Type: application/json" \
  -d '{"input": "hello world", "algorithm": "sha256"}'

Convert currency:

curl -X POST https://convert.agentutil.net/v1/currency \
  -H "Content-Type: application/json" \
  -d '{"value": 100, "from": "USD", "to": "EUR"}'

What time is it in Tokyo?

curl -X POST https://time.agentutil.net/v1/now \
  -H "Content-Type: application/json" \
  -d '{"timezone": "Asia/Tokyo"}'

Evaluate expression with variables:

curl -X POST https://math.agentutil.net/v1/evaluate \
  -H "Content-Type: application/json" \
  -d '{"expression": "price * quantity * (1 - discount)", "variables": {"price": 49.99, "quantity": 3, "discount": 0.1}}'

DNS MX records:

curl -X POST https://dns.agentutil.net/v1/lookup \
  -H "Content-Type: application/json" \
  -d '{"domain": "example.com", "type": "MX"}'

Slugify text:

curl -X POST https://text.agentutil.net/v1/transform \
  -H "Content-Type: application/json" \
  -d '{"input": "Hello World! This is a title.", "operations": ["slugify"]}'

Distance between cities:

curl -X POST https://geocode.agentutil.net/v1/distance \
  -H "Content-Type: application/json" \
  -d '{"from": {"address": "London, UK"}, "to": {"address": "Tokyo, Japan"}, "unit": "km"}'
发现更多技能插件，请访问7w4.net。

Data Handling

These services process the input you send and return results immediately. No data is stored or logged beyond the response. Be cautious about sending sensitive data (passwords, private keys, private addresses) — ask the user first. Text transforms on user-generated documents should only be done with the user's explicit request.

Pricing

All seven services: 10 free queries/day each, then $0.001/query via x402 (USDC on Base). No authentication required for free tier.

Privacy

Stateless processing — no data retention. No personal data collected. Rate limiting uses IP hashing only.

这是一套实用的开发者工具合集，能满足日常的哈希、换算、时区、表达式计算等需求。文档清晰易懂，找工具很方便。缺点是缺少真实使用示例，只有使用说明难以判断实际效果，另外每天免费额度有限制。总体质量中规中矩，功能实用但细节打磨不足。