io.github.cyanheads/college-scorecard-mcp-server

Search, compare, and analyze U.S. college data — costs, earnings, programs, and outcomes.

io.github.DigbyO/colour-memory

Cultural color intelligence. Every colour anchored to a person, a year, and a consequence.

io.github.shaozhengkun123/yarrow

I-Ching (周易) oracle: cast a hexagram, read classical commentary, get a reflection. Bilingual.

io.github.JcJamet/ia-qa-toolbox

130+ QA & dev tools for AI agents: prompt injection, RAG testing, VLM eval, guardrails. Free.

io.github.nikhilgogulwar/universalbench

AI infrastructure for your agent � code, search, GitHub, databases, LLM calls. Free tier.

io.github.cyanheads/uspto-mcp-server

Search USPTO patent applications, PTAB trial proceedings, and petition decisions.

io.github.holiday-forever/holiday-forever-2

Interactive photo gallery widget for a single Airbnb listing with price, rating, and link.

io.github.1clickreport/mcp

40 tools for marketing analytics, campaign management, and AI monitoring across 6 platforms.

io.github.Zman504/conductor-relay-mcp

Hosted MCP for Conductor Relay: a verifier-backed agent work exchange and cold marketplace.

io.github.LarryLemonBot/signal-desk

Low-cost decision layer before high-stakes agent-tool spend.

io.github.LarryLemonBot/gatecheck

Preflight checks for paid x402 and MCP tools before marketplace listing.

io.github.LarryLemonBot/resultrail

Pay-per-success public data result packs for AI agents.

io.github.domdomegg/gmail-mcp

Allow AI systems to read, send, archive, and manage emails via Gmail.

io.github.domdomegg/google-contacts-mcp

Allow AI systems to list, search, and manage contacts via Google Contacts.

io.github.domdomegg/google-sheets-mcp

Allow AI systems to read, write, and query spreadsheet data via Google Sheets.

io.github.domdomegg/google-cal-mcp

Allow AI systems to list, create, update, and manage Google Calendar events.

io.github.domdomegg/google-drive-mcp

Allow AI systems to list, search, upload, download, and manage files and folders in Google Drive.

io.github.devjoaocastro/vulk-mcp-server

Generate, edit, and deploy immersive 3D/WebGL web projects from any MCP assistant.

io.github.valtirman/ndasentry

Anonymous NDA risk analysis for AI agents. $9 per report. No signup, no data retention.

io.github.alpineflow-io/swiss-whale-intelligence

Multi-asset whale forensics: BTC, ETH, SOL, USDT, tokenized gold. 45 tools, free OAuth tier.

io.github.Embassy-of-the-Free-Mind/sourcelibrary

Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature.

io.github.basilalshukaili/agent-broker

AI agents find, message & book SMBs; pay per call in USDC on Base via x402. 14 tools, compliant.

io.github.jnilrac/secant-agent-research-mcp

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

io.github.WingedGuardian/agent-tools

9 utility tools for agents: DNS, WHOIS, email, IP, URL, headers, QR, text, tech. x402 on Base.