"Using Claude to Check the Current Weather Without an API Key" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Deterministic AI agent microtools, no accounts/API keys. fetch_extract: 98% token cut. 38 tools.
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.
Connect your AI to any database — PostgreSQL, MySQL, or SQL Server — in seconds.
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.
Hosted MCP memory: save sessions/decisions once, search from Claude, Cursor, ChatGPT. EU-hosted FTS.
For queries a model can't confidently place: resolves or declines. Built to decline, not guess.
A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.
**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
Read-only answers and semantic search for wiki.private.law, served by the Mothership runtime.
Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.
Serper MCP — wraps the Serper Google Search API (serper.dev)
Free MCP API to create AI chat personas for websites — upload knowledge, search, and chat
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.
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.
SENATRAN: Recall, official-source lookup. Platform-hosted, pay per query with prepaid credit.
Source-traced evidence research for AI agents. We organise the evidence; you decide.
Recall (recall.it) — your AI knowledge base / 'second brain'. Via the official API: semantic search
Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.
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
