Side-by-side comparison of two Model Context Protocol servers — install paths, tools, quality signals, and directory engagement so you can pick the right one for Claude, Cursor, and other MCP clients.
Substack with zero AI API keys. 26 tools (posts, notes, comments, replies, reactions, restacks). Host LLM drafts via proposereply → confirmreply tokens. SQLite dedup, JSONL audit, dry-run default. Install: uvx substack-ops mcp install cursor.
Lightning-paid Nostr signing MCP server. AI agents pay sats per call to sign and publish Nostr events — no API keys, just Lightning. Live at https://mcp.jorgenclaw.ai/sse. Tools: nostrsignevent (2 sats), nostrpublishevent (3 sats).