"FOX" matching MCP connectors:

Outcome-verified watchdog for scheduled agents. $0.002/check.

Rehearsal range: mirror a site, rehearse the workflow, earn a drift-bound promotion receipt.

Checkpoint-paired twin trials for agent fleet changes with blinded verdicts.

152 free QA tools for agents: injection scan, evals, RAG, web audits. Smaller packs: /mcp/{pack}.

Paid website audits for agents: flat JSON, HTML report, deep audit. USDC via x402.

Generate fictional names and sample identity profiles for prototypes, QA, demos, and creative work.

Hire a real human for real-world verification, product testing, AI output review, and errands.

Contrast ratio vs 4.5 for one hex on white

WCAG AAA contrast for two hex colors

WCAG AA contrast for two hex colors

Check PDFs against PDF/UA-1 with veraPDF; see which failures an automatic fix removes; explain rules

Find broken links on a website: crawls its pages and reports 404s, errors and redirect chains

JSON Schema validator for API payloads via MCP: bounded checks and structured pass/fail errors.

Fact-checks generated content against your sources of truth showing what to trust, change, & verify.

Disposable test mailboxes on a real domain: send, receive and assert on real email.