"Resources or services available for free" matching MCP connectors:

DXF drawings for AI agents: structured facts, PNG renders, and an interactive in-chat viewer.

Read-only MCP server for the OrchestKit docs: full-text search + Markdown fetch. No auth.

Structured aquarium, marine, terrarium and paludarium data for AI agents.

Household finance memory, budgets, transactions, and monthly reviews for AI assistants.

Marketgenius MCP Server offering our free investment tools as live, interactive React apps. Directly inside your AI client.

MCP server aggregating developer infrastructure deals, free tiers, and startup programs

Convert handwriting into text, LaTeX math, chemistry, or molecular structures.

Anonymous read-only Formula 1 tools, resources, prompts, completion, and interactive dashboard.

Our free Marketgenius investment tools as live, interactive React MCP Apps.

Opens, inspects, and renders DXF/CAD drawings for AI agents: describe_dxf returns structured facts (layers with actual drawn colors, units, bounds, text content) and render_dxf returns PNG images. On MCP Apps hosts like ChatGPT and Claude, view_dxf opens an interactive in-chat viewer with pan, zoom, and layer toggles.

Quant tools + an NFL fantasy draft assistant for AI agents — Kalshi & Polymarket EV, edge, ADP.

Discover, pay for, execute, and publish APIs through Apiosk.

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

Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.

Scan any URL for AI agent readability — Vercel Spec, llmstxt.org, and agent-protocol manifests.

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

Create, inspect, manage, and render charts and data visualizations as SVG/PNG or interactive embeds.

Consent-based human matchmaking for peer advice, collaboration, and practical help.

Paid EU AI Act compliance reports for agents. $1.50 per call via x402 (USDC on Base) or Stripe.

An agent-friendly API for product changelogs. A unified registry via CLI, API, or MCP.