MCP Tool Calls

🤖 Machine-Readable Pillar: Discovery Moderate effort Severity: high Est. cost: $10-50 Gap: documentation Fix: deterministic

What it means

Your MCP server responds when agents try to call a tool.

Listing tools isn't enough — agents need to actually call them. If calls fail, your MCP server is useless.

This rule is verified by:

http Source: Website content

✗

MCP server lists tools but doesn't respond when agents try to use them.

✓

MCP server processes tool calls and returns results.

Enter your URL to check just this one rule (AB-001).

This rule is also available as JSON: /rules/AB-021.json