"API documentation for creating mock data for frontend development" matching MCP connectors:

SSRF-safe web intelligence: 32 paid x402 tools, 3 free tools, buyer prompt and guide.

290+ quality-scored API capabilities for AI agents across 27 countries via MCP.

Website QA for your coding agent: audit SEO, performance, security, accessibility over MCP.

Live internet-censorship signals: Great Firewall reachability, model-layer censorship, takedowns.

AI agent infrastructure: dedup, cost prediction, validation, governance, failure intelligence.

SupplyMaven supply chain risk management data including manufacturing, port and airport congestion, border, materials and macro indexes

Dead-man's-switch heartbeat monitor for agents, cron jobs & workers. Late ping = you get emailed.

Live health, tool inventory, and schema-drift checks for public MCP endpoints. Free, no auth.

Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

Anomaly detection API powered by physics simulation. Scan any data for outliers.

Read-only triage for n8n, MCP, webhook, and AI agent workflow production failures.

Pre-execution governance for AI agents. Deterministic PASS/FAIL/REVIEW verdicts, replayable proof.

Usage metering + SLA accounting for agent services (the meter behind x402 micropayments).

Compute-is-carbon energy/carbon ledger for agent work with Landauer-limit validation.

Real-time status for 75+ AI services (OpenAI, Anthropic, Cursor). No auth, CORS-enabled.

Measured latency & uptime for AI inference APIs, by region. Exposes a get_ai_api_latency tool.

Live status and health checks for AI coding providers: Claude, Cursor, Copilot, Codex and more.

Breach intelligence API: email search, domain monitoring, passwords and stealer logs.

Revternal MCP — wraps the Revternal Developer Intelligence API

Core Web Vitals metrics by CMS, CDN, and framework — free remote MCP, no auth.