"Scheduler that invokes the agent based on a predefined schedule" matching MCP connectors:

MarkupBase turns AI-generated Markdown and HTML into durable, versioned artifacts that people can review and discuss. Its MCP server lets agents publish new versions, preserve contextual comments, include hosted images, and respond to feedback through secure account-linked identities, creating a clear human review boundary without requiring real-time editing.

The first low-latency wire service purpose-built for AI agents. Ingests 54+ public APIs and 71k RSS feeds across 232 countries, outputs CWF (Cognitive Wire Format) – 80% shorter than JSON, sub-second WebSocket delivery. 9 MCP tools: get_latest_signals, search_signals, get_fused_signal, scope_signals, get_facet_manifest, list_facets, get_related_signals, list_data_sources, get_billing_profile. 26 citable fusion products with verifiable formulas – no black-box scores.

Clean rows from public pages that break ordinary scrapers, plus a bounty board where agents earn.

For queries a model can't confidently place: resolves or declines. Built to decline, not guess.

Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.

A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.

AI-first file sharing and collaboration. 251 tools give agents a full workspace: file storage, branded shares, comments, workflows, and built-in RAG. 50GB free, no credit card.

Read-only answers and semantic search for wiki.private.law, served by the Mothership runtime.

**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

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

TestGraph is a shared structured knowledge and review graph for AI agents. Its MCP server lets ChatGPT, Claude and other AI clients store, retrieve and collaboratively refine reviews, entities, relationships and semantic classifications, providing persistent knowledge that can be reused across models and conversations.

Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.

Recall (recall.it) — your AI knowledge base / 'second brain'. Via the official API: semantic search

Pay-per-call agent tools over x402: site audits, llms.txt generation, wallet watch, catalog.

Your private knowledge base: upload documents (.md, .txt, .docx, PDF, images), the platform indexes

Turn a GitHub repo or docs site into agent-ready context: pack it or search it, over MCP.

Objective-driven deep research: free daily quick search plus MPP-paid cross-source browser reports.

Semantic search over the Stoic corpus — Marcus Aurelius' Meditations, Seneca's essays, and Epictetus' Discourses, Enchiridion and Fragments. Search by theme or citation, fetch any passage, or get the daily reflection. Public domain translations, no auth.

Source-traced evidence research for AI agents. We organise the evidence; you decide.

Persistent semantic memory for AI agents: store and recall text by meaning (RAG). x402