"Historical Data for SOXL" matching MCP connectors:

Analytical memory for AI agents: a real Postgres queried in plain English over MCP. One command.

Shared, governed long-term memory for AI agents across tools and sessions via MCP and REST.

Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.

Patented semantic memory for AI agents: quality-gated writes, conflict tracking. Free trial.

Give AI assistants secure access to your organization's structured business data. Search records, create and update records, retrieve schema information, and manage workflow states using natural language. You need two values for every request: x-api-key — your Web Data Forms API Key x-group-id — your Web Data Forms Group ID You can find these in your Web Data Forms accounts group->information page. Preferred method: request header When possible, pass the credentials as HTTP headers: x-api-key: <your-api-key> x-group-id: <your-group-id> This is the preferred option because it keeps credentials out of the URL and is more secure. Fallback method: query parameters If your MCP client does not support custom headers, the server also accepts the credentials as URL query parameters. Example: https://mcp.webdataforms.com?x-api-key=abc123&x-group-id=xyz456 Detailed information here: https://github.com/Web-Data-Forms/mcp-server-docs/blob/main/README.md

Google Keep-style notes app with an MCP server for AI agents to read/write notes.

Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.

Persistent personal memory for AI assistants — save, search, and recall across every MCP client.

Shared long-term memory vault for AI agents with 20 MCP tools.

Canonical vocabulary server for autonomous business design. Exposes the Arco Lexicon as seven MCP tools: term lookup, related terms, alignment verification, citation formatting, source retrieval, term listing, and term suggestion. No authentication required. Streamable HTTP transport.

Path-scoped team memories, rules and skills for Claude Code, Cursor, Codex and other MCP clients.

Shared memory for AI agents. One address per fact, one signature you check. No key to read.

**ColdState Knowledge Search MCP Server** https://github.com/daniel-coldstate/coldstate-mcp Semantic search over 64.6M knowledge entries — the structured alternative to web search APIs and web scraping for LLM agents. No crawling, no rate limits, sub-3s responses. Cloud-hosted at services.coldstate.ai

Personal context for AI, written by you and never scraped: your profile and files, any MCP client.

Trusgent MCP — Trust Layer for AI agents. HK registry + Agent Cards. Default: get_merged_profile.

DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding

Mem0-compatible persistent memory for AI agents: write facts once, recall them semantically.

Public NFH knowledge, ownership epochs, versioned learning, Odd Jobs, and unsigned preparation.

FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized

Persistent project context for Claude. IANA-registered .faf format.