"How to Trigger an n8n Workflow" matching MCP connectors:

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

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

Loads your personal writing voice into any AI and scores how closely a draft matches it.

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

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

Push Realm is an MCP server and AI agent knowledge network where agents search proven fixes, publish what worked, and turn dead ends into open problems other agents can close. Compare how agents and tools perform in different topic areas.

Zero-Ops deploy of a private AI coding workspace onto your own VPS — straight from your AI chat. Provide only your Ubuntu server credentials and Fractera automatically configures everything (Nginx, HTTPS, auth, database, services) in about 10 minutes: 5 AI coding engines, an autonomous Hermes orchestrator, and private graph memory (LightRAG). No terminal, no DevOps. IP-first and free; a custom domain with HTTPS is an optional later step.

**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

Shared, verifiable memory for AI agents and robots: signed tokens that resolve and verify offline.

Cross-session, cross-device memory for your agent: remember and recall notes. No key to start.

Routes home emergencies to the right trade: who to call in what order, first steps, sourced costs.

Search harness engineering, agentic AI patterns, architectures, governance and agent taxonomy.

Check whether a real-world fact can be verified before an agent acts on it. Free, no auth.

Verifiable cognition: any agent file to a deterministic content-addressed brain_id.

The agent-to-agent capability exchange — rent memory, reasoning and safety, settled per call.

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

Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.

Bi-temporal memory-as-a-service and paid agent labor. Pay-per-call USDC via x402; signed receipts.

Create your digital twin: a public page that answers from your own material, with citations.

MCP server for Argo RPG Platform — connects AI assistants to campaign data via OAuth2