"n8n - Workflow Automation Tool" matching MCP connectors:

A complete color workflow over MCP: mix, convert, harmonize, measure, and remember palettes.

Scan code for quantum-vulnerable cryptography and get NIST post-quantum migration guidance.

530 MCP tools across 561 fintech tools: ChainGraph AP2 decisions, execution_hash. Zero PII.

Hosted, OAuth-gated endpoint for quantakrypto's post-quantum crypto tools: scan code for quantum-vulnerable cryptography (RSA/ECDH/ECDSA/DH) and get NIST ML-KEM/ML-DSA/SLH-DSA migration guidance over authenticated HTTP — nothing to install. Sign-in required (Google/GitHub/email). Same tools as the open-source @quantakrypto/mcp server; source at github.com/quantakrypto/pqc-tools.

Structured iGaming reference: slot specs & RTP variants, providers, regulators, news and jobs.

Generate and read PDFs for AI agents: a generate_pdf and a read_pdf tool, priced per document.

rnv-color-mcp, a hosted color-workflow MCP server (Python, Streamable HTTP). Tools: mix (including Kubelka-Munk paint physics), convert between formats, generate harmonies, transform text case, and save/list/get named palettes. It resolves hex / CSS / custom brand color names and refuses unknown colors rather than guessing.

Free platform to test MCP clients without installing anything. Create mock tools with dynamic templates, configurable delays, conditions (if/then), and response sequences. Supports JSON-RPC 2.0 over Streamable HTTP. Built-in text_echo and json_echo tools. Rate-limited tiers: anonymous (5 calls/min, 1 mock tool), registered (10 calls/min, 4 mock tools), premium (60 calls/min, unlimited). Zero setup — no install, no registration required. More info: https://www.testmcp.dev

Runtime permission, approval, and audit layer for AI agent tool execution.

This tool empowers MCP-compatible clients (like Cursor and Claude Desktop) with professional-grade capabilities for financial data extraction, and report analysis.

Fill any PDF form from your AI agent — in a single tool call.

Monetization gateway for MCP servers. Agents call a tool, receive an x402 v2 payment challenge, sign a USDC transfer on Base, and get the result. Payment is verified before the tool runs and settled only after it returns, so failed calls are never charged. Discovery and tool listing are free.

The official Svelte MCP server providing docs and autofixing tools for Svelte development

Fast, intelligent web search and web crawling. New mcp tool: Exa-code is a context tool for coding

Competitor intelligence for AI agents — SEO, traffic, social, Product Hunt, pricing, AI insights.

Buddhist canon tools: search, passages, cross-canon parallels, dictionaries — all URN-cited.

Free US cleaning cost, time, crew, and chemical-use calculators with visual reports.

Free AI-powered DXP tools by Oshyn: GEO & Reliability scan, Choose New DXP and Estimate DXP Budget.

Static MCP manifest and tool-policy security preflight with signed input-redacted receipts

40+ Lightning-paid AI tools for agents: calls, SMS, fax, voice, translation. No signup, no keys.