AINewsnow

I tested 31 MCP servers for contract compliance. Only 3% passed.

This story is from 2026-09-13. It is preserved in the archive; the latest stories are on the live feed.

MCP has outputSchema so agents can validate tool results. But does the schema actually reject a wrong answer? I built mcp-drill -- a fault-injection harness that speaks MCP -- and scanned 31 popular servers (265 tools) including Microsoft Learn, Hugging Face, Cloudflare, DeepWiki . Result: only 3%…

Read the full story at DEV Community — AI ↗

Timeline · 1 report

  1. 2026-09-13 04:25 · DEV Community — AI
    I tested 31 MCP servers for contract compliance. Only 3% passed.

More stories

  1. ‘Jailbreak-like...’: AI's ‘unexpected’ behaviour mounts concerns, OpenAI's 'rogue agents probed' Hugging Face — Mint AI
  2. OpenAI and Microsoft knew they were starting a ‘doom loop’ for the web — The Verge AI
  3. OpenAI staff knew the ‘existential threat’ AI posed to publishers, New York Times claims — Financial Times AI
  4. Microsoft exec called AI scraping the “largest theft of labor in human history” — Ars Technica AI
  5. Deploy Hugging Face models on Amazon SageMaker AI with coding agents — AWS Machine Learning Blog
  6. Implementing defense-in-depth authorization for MCP tools on Amazon Quick — AWS Machine Learning Blog
  7. Migrating the GitHub Copilot runtime to Rust, using Copilot — GitHub Blog
  8. I literally build the jev architecture one year back and made it open-sourced — r/reinforcementlearning

Get the daily brief of stories like this at 6:30 every morning →