"HubSpot - Marketing and CRM Software" matching MCP connectors:

Tag, rename, and enrich PDFs and images. Free tier: 1,500 tags/month, no credit card.

Shared, verifiable memory for AI agents and robots: signed tokens that resolve and verify offline.

Read-only MCP tools for Total Parks-listed Australian holiday parks, caravan parks, and campgrounds.

Query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment

Hosted endpoint for patch-tuesday-mcp: query Microsoft Patch Tuesday security updates (MSRC) with EPSS and CISA KEV enrichment. Free, no auth or API keys.

Run and manage H Company's Computer-Use Agents from any MCP client.

Search WindowsForum.com threads, posts, and Windows news; fetch documents and Microsoft KB info.

Generate authentic pixel art - sprites, animations, and tilesets - from any MCP client

Hosted MCP server for Retro Diffusion. Generate authentic, grid-aligned pixel art — sprites, characters, animations, and tilesets — from Claude, Cursor, VS Code, Windsurf, or any MCP client. 90+ styles, free cost estimation, pay-per-generation with no subscription and credits that never expire.

Constitutional AI kernel with 13 MCP tools, 888_JUDGE verdict pipeline, and VAULT999 ledger.

Brazilian fiscal MCP server - issue NF-e, NFC-e, NFS-e, CT-e, MDF-e and DC-e via SEFAZ.

The industry standard reference for safe, observable, and steerable AI agent UX. Browse and search the 10 Blueprint principles, principle clusters, curated implementation examples, and application guides. 13 public tools require no credentials. Tools for learning path, coaching context, and handoffs require a Firebase Bearer token. Validation and usage summary tools require a Pro or Teams membership.

Paid MCP web research for agents: search, extraction, citations, and x402 payment discovery.

Foundation discovery and grant intelligence for nonprofits. 174K+ US funders, IRS 990 data.

Campground discovery, availability, planning, and booking handoffs across US public lands.

PreClick scans links for threats and confirms intent match with high accuracy before agents click.

PreClick scans links for threats and confirms intent match with high accuracy before agents click.

Live market data, signals, positions, and macro analysis for crypto, KR stocks, and US stocks.

Background removal, 4x upscaling, and face restoration via GPU

Pronunciation scoring, speech-to-text, and text-to-speech for language learning