Free tools for agent builders

Test what agents can actually discover and use.

Diagnose websites and MCP servers with transparent checks. Every result includes the evidence observed, the fix to make, and the next integration path.

Website audit

Live

Agent Readiness Test

Run 22 deterministic checks across discovery, readability, actionability, and trust. Get evidence and fixes, not a mystery score.

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Protocol audit

Live

MCP Server Doctor

Test Streamable HTTP negotiation, tools/list, schemas, descriptions, output contracts, and safety annotations without calling a tool.

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Cost planning

Agent Stack Cost Calculator

Estimate monthly model, search, browser, scraping, voice, storage, and hosting costs, then compare viable alternatives.

Coming soon

Why these checks are different

Deterministic. The score comes from observable HTTP, HTML, and protocol evidence—not an opaque model opinion.

Safe by default. Targets are restricted to public networks, response sizes are bounded, and the MCP doctor never invokes a tool.

Built to fix. Failed checks explain the exact remediation and connect to the tools and recipes that can implement it.