422 MCP servers and agent skills in the Developer Tools category, ranked by quality score.
The Underground Cultural District MCP server. 23 tools for AI agents: 13 free developer utilities (UUID, JSON formatter, Base64, hashing, JWT decoder, regex, cron, ETH converter), 7 paid creative tools, and a browsable marketplace of 218+ digital goods across 22 shops. npm: `@underground-cultural-district/mcp-server`
AI detection for text content with GPTZero API. Detect AI-generated text, get confidence scores, multilingual support (French/Spanish), and detailed probability breakdowns.
Formats files using `.editorconfig` rules, acting as a proactive formatting gatekeeper to ensure AI-generated code adheres to project-specific formatting standards from the start.
Grounding / hallucination guard: verify a claim against evidence (Supported/Refuted/Not Enough Evidence) with a confidence + abstain flag, for RAG and agents. `npx -y eleata-verify-mcp`.
An MCP server to control iOS Simulators
x402-native API gateway with 20+ capabilities (web-extract, web-search, translate, image-generate, screenshot, PDF, OCR, and more) payable with USDC on Base. No API keys — agents pay per call via HTTP 402.