Devutils
Gives Claude 17 text utilities that run locally via npx: base64 encode/decode, UUID and ULID generation, hashing with md5/sha1/sha256/sha384/sha512, JWT decoding with expiry checks, cron expression parsing and validation, Unix timestamp conversions, and JSON formatting. No API keys or external services. You'd reach for this when you're asking Claude to inspect a JWT payload, explain when a cron job runs next, generate test UUIDs, or quickly hash strings during development conversations. Works in Claude Desktop, Cursor, and VS Code Copilot. The regex tester and timestamp converter are handy for debugging without context switching to browser tools.
- GitHub stars
- 2
- tools
- 17
- transport
- STDIO
- last updated
- Mar 10, 2026
Tools
17 toolsPublic tool metadata for what this MCP can expose to an agent.
base64_encodeEncode a string to Base64
Encode a string to Base64
No parameter schema in public metadata yet.
base64_decodeDecode a Base64 string
Decode a Base64 string
No parameter schema in public metadata yet.
uuid_generateGenerate one or more UUIDs (v4)
Generate one or more UUIDs (v4)
No parameter schema in public metadata yet.
ulid_generateGenerate a ULID
Generate a ULID
No parameter schema in public metadata yet.
hashHash a string (md5, sha1, sha256, sha384, sha512)
Hash a string (md5, sha1, sha256, sha384, sha512)
No parameter schema in public metadata yet.
hash_allHash with all algorithms at once
Hash with all algorithms at once
No parameter schema in public metadata yet.
jwt_decodeDecode a JWT token (header, payload, expiry)
Decode a JWT token (header, payload, expiry)
No parameter schema in public metadata yet.
cron_explainExplain a cron expression in plain English
Explain a cron expression in plain English
No parameter schema in public metadata yet.
cron_validateValidate a cron expression
Validate a cron expression
No parameter schema in public metadata yet.
cron_nextShow next N run times for a cron expression
Show next N run times for a cron expression
No parameter schema in public metadata yet.
timestamp_to_isoConvert Unix timestamp to ISO 8601
Convert Unix timestamp to ISO 8601
No parameter schema in public metadata yet.
iso_to_timestampConvert ISO 8601 to Unix timestamp
Convert ISO 8601 to Unix timestamp
No parameter schema in public metadata yet.
timestamp_nowGet current time in multiple formats
Get current time in multiple formats
No parameter schema in public metadata yet.
json_formatPretty-print a JSON string
Pretty-print a JSON string
No parameter schema in public metadata yet.
json_minifyMinify a JSON string
Minify a JSON string
No parameter schema in public metadata yet.
json_validateValidate JSON and report its type
Validate JSON and report its type
No parameter schema in public metadata yet.
regex_testTest a regex pattern against a string
Test a regex pattern against a string
No parameter schema in public metadata yet.
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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: yes
Works with Claude Desktop, Cursor, and VS Code Copilot. Zero auth required.
MCP server devutils demo — JWT decode, UUID generation, and cron explanation in Claude Desktop
Tools
Details
- Repository
- github.com/ofershap/mcp-server-devutils
- Category
- Automation & Workflows
- Package
mcp-server-devutils- Transport
- STDIO
- Registry
- MCP registry, active
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