"Actual Budget" matching MCP connectors:

Maryland state open data via Socrata SoQL — government, health, transport, budget, environment.

Actual real estate transaction prices and official land price data by prefecture/municipality/year, from Japan's Ministry of Land, Infrastructure, Transport and Tourism.

Verified Polish open data for AI agents: debt, budget, 460 MPs, votings, judiciary search, RAG.

Tango gives your agent structured, real-time access to the entire federal procurement graph — contracts, opportunities, entities, IDVs, OTAs, protests, subawards, forecasts, budget accounts, vehicles, and GSA eLibrary — behind one auth boundary. No screen-scraping, no stitching together government APIs. Five tools (search, search_opportunities, resolve, get_details, fetch_api_docs) work from Claude, Cursor, the OpenAI Responses API, or any MCP client.