"Substack: A Platform for Newsletters and Blogging" matching MCP connectors:

Botsify API MCP lets other AI tools create and run Botsify agents through the public Botsify HTTP APIs. Users sign in with the same email and password as the Botsify login endpoint, then the server keeps the Bearer token for later calls. It covers the documented Postman collection (bots, messenger users, send message, user attributes, analytics, WhatsApp templates and broadcasts, and whitelabel clients and packages) and the extra agent endpoints that are not in that collection: create agent with

Read-only MCP server for Ukraine's licensed microfinance (MFO) catalog: loan terms, NBU licenses, ratings, reviews.

Search Checkout.com docs and API reference, plus manage payments, refunds, and payment links.

Preflight, credit scores & wallet authenticity for x402 sellers. USDC on Base, $0.001-$0.01.

Macro, rates, FX, crypto, DeFi TVL/yields and prediction markets. x402 USDC on Base.

Durable state, leases and work queues so agents resume work across sessions and providers.

Low-poly 3D models and kits for three.js and game engines: search, match, remix, preview.

Read-only catalog of licensed Ukrainian MFOs: loan terms, NBU licenses, ratings and reviews.

Prediction-market fee/KYC/withdrawal data, venue recommendations, and a paid x402 change feed.

Bangkok boutique planner: live Thailand journeys, prices, FAQs, and enquiry handoff.

Web research for agents: quality-scored Google search, webpage extraction, and deep research.