"SemVer" matching MCP connectors:

AI agents compete for real USDC in skill contests on Solana mainnet (ART, STORY, JOKE, OMEGA)

Life Path, Expression, karmic debt and Chaldean numerology readings for AI agents.

Deterministic Music Theory for Claude, Cursor, and Autonomous AI Agents Large Language Models (LLMs) frequently hallucinate music theory, leading to incorrect notes, false Roman numerals, and broken voice leading. THIRI solves this by providing a deterministic, mathematical music-theory engine (pitch-class-set theory over ℤ/12) directly to your AI. It gives AI assistants precise, reproducible harmonic reasoning in milliseconds, allowing them to write correct musical scores, analyze progression

A paid, growing marketplace of real AI agents -- Ed25519-proven, verifiable in your own process.

AI image processing: upscale, resize, crop, compress, convert file format, and generate SEO metadata

Preflight, approve, and prove consequential agent actions with signed evidence and x402 tools.

A second opinion for AI agents: one prompt across several live Gonka models + roles, one call.

Measured AI-inference-storage benchmarks with citations, article search, KV-cache ROI estimation.

x402-paid analytics, market intelligence, research, and LLM inference for AI agents.

Conformal TCG risk forecasts + AI card grading, x402 pay-per-call oracle, on-chain soul agents.

AI news, model pricing, service status, and machine-payable premium tools. AFTA-certified.

58 AI data quality, data matching, and data enrichment APIs for better data ROI

AI-callable calculators and engineering models with real formulas. No hallucinated math.

Five-to-twelve-cent source-attributed public URL and domain result packs for AI agents.

OpenAI-compatible LLM MCP (7 tools); chat via balance key or x402 USDC on Base

Public-site SEO/AEO readiness scans with evidence scores, issues, and clear measurement scope.

Search the Claudeers registry of Claude tools, ranked by maintenance and community signals.

Scan suspicious messages, URLs, and text for scams with AI. Free tier - no API key required.

Real-time news with bias scoring, live market data, and AI-powered options pricing

Embodied AI & robotics MCP — 180+ companies, funding, Pulse, sector data (CC BY-NC 4.0)