"Methods to Improve or Enhance a Prompt" matching MCP connectors:

Open AI Visibility Index for crypto and Web3. Weekly share-of-answer measurements for 24 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Open AI Visibility Index for SaaS and AI tools. Weekly share-of-answer measurements for 20 tracked brands across ChatGPT, Perplexity and Gemini, from a frozen versioned prompt panel. Five read-only tools: full index, per-brand lookup, brand list, complete measurement history and methodology. No auth, no API key. Data is CC BY 4.0 with a permanent archive of every weekly snapshot, so any figure can be verified independently.

Search and compare attributed recipe records through a public read-only remote MCP endpoint.

One MCP endpoint over 69 public PPN APIs: search_apis to discover, execute_api to call. Free tier.

ILO labour statistics (ILOSTAT) with full provenance: source URL, vintage, license. Remote or stdio.

A Model Context Protocol server that provides Philippine License to Sell (LTS) verification data to LLMs. Built on Cloudflare Workers with Supabase. Public, read-only, no authentication required. Data sourced from the Department of Human Settlements and Urban Development (DHSUD) License to Sell registry and cross-referenced with published real estate projects on REN.PH.

MCP server for the Philippine Standard Geographic Code (PSGC) API. Gives AI agents structured access to the full PH geographic hierarchy - regions, provinces, cities, municipalities, and barangays.

Capture a web source, or seal a hash you hold, into a signed receipt anyone can verify offline.

Sentence-level YoY diffs of 10-K/10-Q sections, pinned to accession numbers. Pay per call x402.

Find US federal grants your organization is actually eligible to apply for. Free, no API key.

Federal government contracts and USAspending procurement exposure for SEC-listed companies.

Verify a US company: officers, agents, motor carriers. Flags when our status disagrees with state.

Read-only access to the Islam West Africa Collection via Hugging Face datasets.

Reverse geocode latitude/longitude to loc_id; resolve loc_ids to boundaries, centroids, hierarchy.

Calibrated probability reads on world events - source-traced, publicly graded, free to query.

Read pages & files to text, news, weather, market holidays and timezones via x402.

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

Score a river cruise date against daily water levels on the Rhine, Danube, Elbe and Seine.

Data on a Federal Executive public servant in the Transparency Portal from the CPF. Platform-hosted,

Indicators for a company in the Federal Transparency Portal from the CNPJ, such as sanctions, agreem