"Examples of MCPs (Microservices Communication Protocols) That Do Not Require API Keys" matching MCP connectors:

Millions of dated buying and momentum signals: who raised, who's hiring, what changed and when

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.

AI-powered data integration platform. Onboard users and run DPF data workflows.

Paste-your-data analytics: CSV profiling, A/B tests, correlation, growth. 4 of 7 free.

Evidence-backed public business research for agents with compact, pageable output.

Converts between PDF/Office documents and structured JSON, both directions. Pure OSS libraries, x402

Gateway between LLM agents and world data through eight tools and a bundled endpoint catalog.

Deterministic company, entity and location lookups for agents - per call, x402 or API key.

Counts and firmographics for 7.5M+ verified US B2B businesses, by industry, state and city.

Directorio hispano Miami-Centroamérica: busca negocios, reserva citas reales y ordena comida.

Converts customer-supplied PDF bank statements into checked Excel, CSV, or JSON with balance validation. Hosted Streamable HTTP endpoint; each user brings their own MainBook API key, and the server never connects to bank accounts.

SEMA MT: APF Rural, official-source lookup. Platform-hosted, pay per query with prepaid credit.

MPF: Amazônia Protege, official-source lookup. Platform-hosted, pay per query with prepaid credit.

Wrapper for the official Projuris ADV REST API (legal practice management): cases, people (clients/p

Your Databricks Lakehouse in natural language: run SQL on your SQL warehouses, track long-running qu

Google Cloud Billing BigQuery export reporting through a user-connected service account.

SINTEGRA: RJ, official-source lookup. Platform-hosted, pay per query with prepaid credit.

SUSEP: Empresas, official-source lookup. Platform-hosted, pay per query with prepaid credit.

MPT RS: Certificate Negativa de Feitos, official-source lookup. Platform-hosted, pay per query with

ECRVSP Vehicles: Cadastro BIN RENAVAM, official-source lookup. Platform-hosted, pay per query with p