MCP servers for Claude Desktop

Fennec CLI — pipe, attach, watch, and start the Fennec MCP server

Storage for AI agents: free public items, or private items paid with credits or USDC (x402).

MCP server for FRED economic data: series, observations. Needs a free API key.

Credential isolation for AI agents. Store, guard, and record — your agent never sees your API keys.

Your real mailbox and calendar for your agent (M365/IMAP); a human approves every send.

Find duplicate records in 30 seconds. Zero-config entity resolution, 97.2% F1 out of the box.

134 paid APIs as MCP tools, billed per call in USDC on Base. No account, no login.

Pre-connect trust checks for AI agents and MCP servers using HVTracker's public trust registry.

Generate calendar events as standard ics files. No network and no key.

Ask the agent of someone whose calendar you could not get. No credential needed to try.

Enrich first-party lists with live intent, activity, and inbox signals for marketing and outreach.

MCP server for Jetty AI/ML workflow platform

Browse the JSON Schema Store catalog. No key required.

Shorten and expand URLs with the is.gd public service. No key required.

Song lyrics by artist and title from the public lyrics service. No key required.

A real inbox for AI agents: send, receive and thread email, behind a prompt-injection firewall.

Microsoft Outlook (mail) MCP server — read, search, and send email through Microsoft Graph.

Search anime and manga from MyAnimeList through the Jikan API. No key required.

Use this MCP server to Modrinth, search Minecraft mods, filter by loader and game version,...

Estimate nationality from a first name. No key required.

Look up chemical compound properties and synonyms from PubChem. No key required.