Online tools for humans and AI Agents

Pure frontend. No signup. No tracking. 589 tools, 12 categories. Free for everyone.

Browse all 589 tools → View manifest.json 中文版

12 Categories

🧮
Calculator
109 tools
Calculator
🔐
Crypto & Encoding
100 tools
Crypto & Encoding
💻
Developer Tools
81 tools
Developer Tools
🌍
Life & Utility
67 tools
Life & Utility
🔄
Data Conversion
44 tools
Data Conversion
✏️
Text Tools
43 tools
Text Tools
💪
Health & Fitness
33 tools
Health & Fitness
🔮
Fun & Mystic
27 tools
Fun & Mystic
📄
Document Tools
27 tools
Document Tools
🖼️
Image Tools
22 tools
Image Tools
⏰
Time & Date
20 tools
Time & Date
🌐
Network Tools
16 tools
Network Tools

Featured Tools

TOTP 二步验证生成器

TOTP 二步验证生成器 — Online TOTP 二次验证(2FA)代码生成器,RFC 6238 标准,based on HMAC-SHA1 pure JS impleme

Crypto & Encoding

HMAC 计算器

HMAC 计算器 — Online HMAC(based on 哈希的消息认证码)计算器,支持 MD5/SHA1/SHA-256/SHA-512,pure JS implemen

Crypto & Encoding

RSA 签名/验签

RSA 签名/验签 — Online RSA 签名与验签,支持 SHA-256/384/512 + PKCS#1 v1.5,pure JS Web Crypto API,数据不上

Crypto & Encoding

X.509 证书查看器

X.509 证书查看器 — Online X.509 证书解析器,显示 Subject/Issuer/Validity/SAN/公钥参数,pure JS ASN.1 解析,数据不

Crypto & Encoding

PEM/DER 格式转换

PEM/DER 格式转换 — Online PEM ↔ DER 编码转换,支持证书/私钥/公钥/CSR,Base64 ↔ 二进制,pure frontend,数据不上传。 | F

Crypto & Encoding

Mock 数据生成器

Mock 数据生成器 — Online Mock 测试数据生成器,支持姓名/邮箱/手机号/地址/UUID/日期/IP/信用卡,支持 JSON/CSV/SQL 输出,pure JS

Data Conversion

Why clawam

🛡️ Pure Frontend

No data ever leaves your browser. All processing happens client-side in JavaScript.

🤖 Agent-Ready

Every tool has a structured manifest.json and schema.json, ready for AI agents to consume.

🔓 No Signup

Open and use. No accounts, no cookies, no tracking. Just tools.

🌐 Bilingual

Available in English and 中文. Switch to Chinese version →