AINewsnow

Loose MCP Input Schemas Let the Agent Send Invalid Parameters

This story is from 2026-10-30. It is preserved in the archive; the latest stories are on the live feed.

Quick answer: An MCP tool with a loose input schema — everything typed as a string, required fields left unmarked, or a catch-all object — pushes validation to runtime and invites the agent to send malformed parameters that the upstream API rejects. The tool's input schema is the contract the model…

Read the full story at DEV Community — AI ↗

Timeline · 1 report

  1. 2026-10-30 07:01 · DEV Community — AI
    Loose MCP Input Schemas Let the Agent Send Invalid Parameters

More stories

  1. 8 examples of Gemini 4 Argon in action — Google Gemini Blog
  2. Welcome Le Chonk: Mistral Large 4 on Hugging Face — Hugging Face Blog
  3. How a wave of startups are betting on AI to make formal software verification practical and essential, including &Truth, which launches with a $70M seed — Techmeme
  4. Meta quietly launches an AI fashion app called Style Sketch — TechCrunch AI
  5. You can now generate, preview, and edit documents, PDFs, presentations, spreadsheets, and more directly in Gemini. — Google Gemini Blog
  6. ChatGPT Enterprise at Zendesk: Putting Company Data to Work — OpenAI YouTube
  7. Grey-Market Relay Turns Off Codex and Claude Code Sandboxes — DailyAI
  8. Here is my submission for ComfyUI’s Open Source Higgsfield challenge: Openjutsu, one-click character swap for videos, fully local using Minimax H3 only — r/StableDiffusion

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