"Collaboration Between Multiple AIs via MCP (Master Control Program)" matching MCP servers:

Exact recall from a plain-text index you keep: recall, find, tags, timeline over stdio. Read-only by default; ais --mcp rw adds saving; no delete at any setting. Encrypted values stay opaque to the agent

A Firecrawl MCP server with built-in support for multiple API key rotation, enabling web search, scraping, crawling, extraction, and more via MCP clients.

Comprehensive MCP server providing full programmatic control over the Perplexity API, including agent, sonar, search, embeddings, key management, and cost estimation tools.

A read-only MCP server for searching control science and engineering papers via OpenAlex, limited to core journals in the field.

An MCP server that provides persistent, governed memory for Claude Code, enabling local storage and retrieval of decisions, architecture, and context across sessions with audit trails and hybrid semantic recall.

Enables natural-language querying of PostgreSQL databases with schema grounding and self-correcting error recovery. Provides a live audit trace and verifies results through exploratory decomposition and empty-result sanity checks.

Provides search, detail lookup, and gap listing tools for a security control inventory, enabling natural language queries about control status and gaps.

Official aviation data MCP by Flight Master DAST (航班管家 DAST), providing flight status, route search, onboard comfort, delay and cancellation risk, airport weather forecasts, and real-time or historical flight trajectories.

An MCP server for managing SearXNG instances, enabling configuration inspection, engine toggling, health checks, and container lifecycle control.

Provides semantic search, note retrieval, source explanation, daily digests, and health checks for a local Obsidian vault, enabling MCP clients like Claude Desktop and Claude Code to query the second brain via natural language.

Connects AI assistants to Obsidian vaults via the Local REST API to search notes, retrieve content, and perform semantic searches. It features self-healing multi-URL connectivity and supports both stdio and HTTP transports for flexible deployment.

Integrates with Narrative's Data Collaboration Platform, enabling AI assistants to search attributes, list datasets, manage access rules, and execute NQL queries via MCP tools and prompts.

Hound MCP Servers Gives your agent actually good fetch + Search for 0$, no catch, no api keys or free tiers, fully free.

Provides real-time Google search capabilities to AI assistants like Claude, bypassing anti-scraping mechanisms.

MCP server for the German energy market master data register (MaStR), enabling querying of energy units, actors, grid connections, and more via 21 SOAP and public tools.

MCP server for bash.dog that lets AI agents submit, search, and browse funny AI quotes, including AI roasting other AIs.

A multi-API key load balancing MCP server for Tavily that automatically rotates between multiple API keys to provide high availability and increased request limits.

An MCP server that gives Claude searchable, cited access to RBI and SEBI regulatory documents — circulars, master directions, notifications, and regulations.

Enables querying music discography data from Discogs, including master releases, artist profiles, and label information.

MCP server for travel program search, comparison, and booking via Yourttoo API, optimized for LLMs with token-saving responses.