Ground Truth
Sourced, time-stamped public facts for any place on Earth, built for agents.
Live
What it does
Ask a question about weather, river levels, floods, earthquakes, disasters, air quality or US weather alerts. Every answer comes with the fact, the place, the time, a link to the source, its age and how confident we are.
- Who it is for
- Agents and developers who need current, sourced facts instead of guesses.
- Price
- Free: 100 calls a day per agent, no sign-up. Paid calls are planned and not charging.
- Limits
- Public sources only (Open-Meteo, the US Geological Survey, GloFAS flood forecasts, GDACS disaster alerts and the US National Weather Service). Old answers are marked stale. Burn bans are partial (US red-flag warnings only).
Live status
Right now: Answering now, with recent gaps. Last check 2026-11-10 06:13 UTC. Checked about every five minutes from outside. Full status page
- 98.7%uptime, last 24 hours (308 checks)
- 98.89%uptime, since measuring began (2 days)
- 184 mstypical answer time
- 100.0%answers that were right 20 of 20 checked
For developers: try it
GET https://gt.llpro.ai/v1/ask?topic=weather&place=LagosFor agents
Machine-readable: agent card (a machine-readable profile), llms.txt (a plain-text summary), MCP at https://gt.llpro.ai/mcp. Status JSON: /status/ground-truth.json.