"Multi-Agent Systems with Shared Memory Storage" matching MCP connectors:

Agent-facing intake for HORIZON SHIELD, the Japanese construction estimate auditor.

Live multi-asset market data for AI agents with provenance, starter credits, x402, and examples.

Free self-serve Agent Passports for AI agents: signed, portable, offline-verifiable credentials.

UK property data — Land Registry comps, EPC, Rightmove, rental yields, stamp duty, Companies House

Teardrop is the native economic layer for AI agents, providing a robust suite of tools for multi-chain portfolio tracking, DeFi yield analysis, and gas estimation. It enables autonomous agents to securely find Web3 data and manage micro-payments on-chain with zero human intervention.

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

Eligibility-first UK & EU grant discovery, inside ChatGPT and Claude. Checks eligibility before recommending, explains why each grant fits, and cites the funder's own page on every answer — with an honest "competition_risk: unknown" when the data isn't there. 6 tools: search, fetch, find_opportunities, should_apply, explain_opportunity, complete_profile. Transport: Streamable HTTP. Auth: OAuth 2.1 + PKCE. Free to install, no card required.

AI infrastructure design agent. Describe your app in plain English; Riley designs, prices, and deploys AWS or GCP infrastructure with generated Terraform.

Pay-per-use tool API for AI agents. Free tier, x402 USDC micropayments, or API key.

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

The PropelAuth Integration MCP Server helps you and your favorite AI agent integrate PropelAuth as quickly and easily as possible into your project. Whether you're integrating PropelAuth into your Next.js project or your FastAPI backend, the Integration MCP Server will ensure your AI agent has the best context possible for a successful integration.

Secureship MCP gives AI assistants access to a multi-carrier shipping API covering rate comparison, label generation, package tracking, pickup scheduling, address book management, shipment history, customs documents, and more — across carriers like UPS, FedEx, Purolator, Canpar, and others. Browse 150+ live endpoint schemas, parameters, and auth details — always current, never stale.

First-party Spanish, Portuguese and Italian property listings with notarial-verified prices.

Upload, edit, compress, protect, redact, and compare PDFs with KDAN PDF in Claude and ChatGPT.

Browse Hacker News feeds, threads, and user profiles with full-text search.

Educational MCP server with 17 math/stats tools, visualizations, and persistent workspace

Designs, prices, and deploys AWS/GCP cloud infrastructure from plain-English requirements.

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

Reliable async execution for agent tool calls: schema gating, retries, idempotency, audit trail.

Sovereign Agent OS — Persistent Memory, Governance & Compliance for AI Agents.