Developer Tools & Repos MCP Servers for ChatGPT

IMEI validation MCP.

JSDelivr Data API MCP

JSON tools MCP.

JSON Schema validation MCP.

LeetCode MCP.

MIME type lookup MCP.

npm MCP — wraps the npm Registry API (free, no auth)

Number utilities MCP.

Phone number validation MCP.

PyPI MCP — wraps the Python Package Index (PyPI) JSON API (free, no auth).

QR Code MCP — wraps api.qrserver.com (free, no auth)

Repology MCP — cross-distro package version aggregator.

RubyGems MCP — wraps the RubyGems.org public API (free, no auth)

Semantic Versioning (semver) MCP.

Text case conversion MCP.

Unix timestamp MCP.

Timezone MCP — wraps timeapi.io (free, no auth)

ULID MCP.

Unicode character MCP.

User-Agent parser MCP.

UUID validation & generation MCP.