MCP Server DevUtils — 17 Developer Tools for AI Assistants
An MCP server that gives your AI assistant 17 developer utilities — base64, UUID, JWT decode, cron, timestamps, JSON, regex. No API keys, no external services, just npx.
You: "Decode this JWT: eyJhbGci..."
AI: Header: { alg: "RS256" } Payload: { sub: "1234", exp: 1700000000 } Expired: yesWorks with Claude Desktop, Cursor, and VS Code Copilot. Zero auth required.
Tools
| Tool | What it does |
|---|---|
base64_encode |
Encode a string to Base64 |
base64_decode |
Decode a Base64 string |
uuid_generate |
Generate one or more UUIDs (v4) |
ulid_generate |
Generate a ULID |
hash |
Hash a string (md5, sha1, sha256, sha384, sha512) |
hash_all |
Hash with all algorithms at once |
jwt_decode |
Decode a JWT token (header, payload, expiry) |
cron_explain |
Explain a cron expression in plain English |
cron_validate |
Validate a cron expression |
cron_next |
Show next N run times for a cron expression |
timestamp_to_iso |
Convert Unix timestamp to ISO 8601 |
iso_to_timestamp |
Convert ISO 8601 to Unix timestamp |
timestamp_now |
Get current time in multiple formats |
json_format |
Pretty-print a JSON string |
json_minify |
Minify a JSON string |
json_validate |
Validate JSON and report its type |
regex_test |
Test a regex pattern against a string |
