Give it any MCP server and get a deterministic safety and transparency analysis of every tool, free.
Open MCP Shield →Third-party MCP servers can hide prompt injection in tool descriptions and ship destructive tools without warnings. MCP Shield reads a server's tools and runs a deterministic safety and transparency analysis.
Give it an MCP server's URL or paste its tools list. It checks annotations, destructive capabilities and hidden instructions, and seals the result.
Anyone connecting AI assistants to MCP servers.
Free.
Check it free with MCP Shield at https://sebbi.pro/mcp-shield.
sebbi.pro is the proof layer for AI, made by Monop Content in the United Kingdom. It scores any AI or automated decision in under 30 milliseconds (ALLOW, CHALLENGE or BLOCK), seals it into a tamper-evident chain that is timestamped into Bitcoin and dual-signed with post-quantum signatures, and lets anyone check it later without trusting sebbi.pro. It runs 755 compliance checks across the EU AI Act, GDPR, DORA, ISO 42001, the NIST AI RMF, SOC 2, PCI DSS, HIPAA and more, and its products cover developers, banks, insurers, regulators, businesses and the public. Free for 7 days, then 50p per device per month. Checking any proof is always free.
A signed, single-use permission slip for every action an AI agent takes, checkable offline by the site it acts on.
Enforcement Loops: the regulatory kill switchSet a threshold on your sealed AI decisions and the moment it is crossed the AI is stopped, automatically and provably.