GETFIXN / WEATHER DATA API
Weather data for prediction bets, bots and apps.
Build a bot for Kalshi-style weather contracts, a weather app or a dashboard. Send a latitude and longitude, get back model-based weather, active alerts and an hourly forecast up to 48 hours ahead. For storm risk, ML Storm Forecast by Address returns the addresses inside a forecast footprint, each with its structure replacement value and the people at that address. Pay as you go from a prepaid balance. The data feeds your model. We don't tell it what to buy, and nothing here is investment advice.
No subscription. Agents can also pay per call in USDC on Base, no signup. GetFixn sells data, not trading advice.
| Location | Temp F | Gust | Rain | County grade |
|---|
01 / HOW IT WORKS
Buy a key. Make a request. Read the JSON.
Buy a key
Put $25 or more on a prepaid balance. You get a key that starts with tfx_live_. It is shown once, so copy it somewhere. You can rotate or recover it later. Top up any amount, any time.
# keep the key out of your code
export GETFIXN_KEY=tfx_live_...Ask for the weather at a point
One route, /v1/data, with a dataset parameter. This one is a free preview, so try it now. The paid pull adds the full set of fields at $0.0002 a call. Need hundreds of locations? There is a batch route for 500 at once.
$ curl "https://data.truefixr.com/v1/data?dataset=weather&lat=32.78&lon=-96.80" { "location": { "lat": 32.784859, "lon": -96.802979 }, "temperature_f": 72.4259, "wind_gust_mph": 13.7615, "humidity_pct": 91.8, "alerts": [], "nowcast": { "raining_now": true, "precip_rate_inhr": 0.039 }, "billed": false }
Ask what the forecast says
ML Storm Forecast by Address uses a separate machine-learning model for each of ten perils, with windows from 24 hours to 10 days, refreshed four times a day. The free preview shows counts, per-peril totals and a county grade as a teaser. Each paid address record carries structure replacement value, people and a risk label. A forecast shows what could happen, not what will. It can be wrong.
$ curl "https://data.truefixr.com/v1/data?dataset=risk&county=Dallas&state=TX" { "grade": "B", "grade_label": "Moderate risk", "window": "24h", "storm_types": { "HEAVY_RAIN": 501, "FLASH_FLOOD": 386 }, "data_age_hours": 5.8 }
Add your key for the paid pulls
Same route, same parameters, plus a header. Each call comes off your balance at the prices below.
curl "https://data.truefixr.com/v1/data?dataset=weather&lat=32.78&lon=-96.80&details=true" \ -H "Authorization: Bearer $GETFIXN_KEY"
02 / TRY IT
One free call from your browser.
Pick a city, press Run. One small request per click, nothing is billed, no key.
Ready.
Press Run request to call the live API.
03 / WHAT PEOPLE BUILD
Four things this is for.
| Build | What it does | Calls you would use | |
|---|---|---|---|
| Prediction-market bots Kalshi-style temperature, rain and snow contracts | Pull Model-Based Weather by Address and Model-Based Hourly Forecast by Address for the exact places a contract settles on. They go into your model as inputs. Your model decides, not us. | weather, weather + hours_ahead | Bot guide |
| Agents that pay per call x402, USDC on Base | The agent pays per call from its own wallet. No account, no key to manage. Or point it at the MCP server. | any dataset | Agent guide |
| Weather apps | Address-level storm history back to 2003 and a forecast out to 10 days, for the people who use your app. | address, history, risk | Gallery |
| Dashboards and automation | Rank counties by exposure, post to Discord or Telegram when an alert shows up, feed a spreadsheet. Webhooks are yours to host. | daily, at_risk, batch | Examples |
Kalshi and any other market named here are just examples of the kind of contract people trade. None of them endorse or partner with GetFixn.
04 / WHAT YOU GET
Reported and radar-detected storms, matched to addresses.
Past Storm Leads by Address (last 365 days) and Storm History by Address (since 2003) are storms that were reported and radar-detected, matched to street addresses. They are not inspections or damage reports. ML Storm Forecast by Address covers ten perils, address by address: tornado, hail, wind, flash flood, heavy rain, winter, ice, coastal surge, hurricane and wildfire. History covers 11 event categories. Coverage is the United States.
05 / PRICES
You pay for what you pull.
| Data | What you get | Price |
|---|---|---|
| ML Storm Forecast by Address | Forecast addresses with structure replacement value and people, 10 perils, 24 hours to 10 days, refreshed 4 times a day. | $0.05 / address |
| Past Storm Leads by Address | Reported and radar-detected storms matched to street addresses, last 365 days. Radius 1 to 25 miles. | $0.05 / address |
| Storm History by Address | One property, reported and radar-detected events since 2003. $10 minimum per report. | $0.05 / line |
| County forecast status (batch) | County-level status for up to 500 locations per call. Not address-level. | $0.05 / location |
| Hazard score | Per-property hazard summary by peril. | $0.50 / query |
| Model-Based Weather by Address | Current conditions and active alerts for a point. Lean response free, full pull with details=true. | $0.0002 / call |
| Model-Based Hourly Forecast by Address | Forecast hours 1 to 48 ahead for a point (hours_ahead). | $0.0002 / call |
| Previews | Free, like the board above. Paid pulls need a key or an x402 payment. | $0 |
How buying works
You buy a key once, from $25 (presets $25, $50, $100, $250, $500, or your own number). That money is your balance. Calls come off it. Top up any amount whenever you like. There is no subscription and no contract.
Auto top-up is a checkbox, off unless you turn it on. It charges the card you saved, for the same amount, when the balance drops below $5, at most once every 20 hours.
Bigger volume?
Heavy or commercial trading volume? Email admin@truefixr.com. We can talk about a bigger deal.
06 / FOR BOTS THAT HAVE A WALLET
No signup. Pay per call in USDC.
A bot or AI agent can pay for each call on-chain, in USDC on Base, using the x402 standard. The first payment settles right away. After that, small calls add up on a $1.00 tab. We tested it with the official Python x402 v2 client. Prefer tools? Point your agent at the MCP server.
# x402 discovery file https://data.truefixr.com/.well-known/x402.json # MCP server https://mcp.atlasunited.io/mcp # machine-readable docs https://data.truefixr.com/openapi.json https://data.truefixr.com/llms.txt
07 / READ THIS BEFORE YOU TRADE ON IT
GetFixn sells data, not trading advice. Nothing here is investment advice. Forecasts can be wrong. You are responsible for your own strategies and for following the rules of any exchange or market you use.
We make no claims about returns or accuracy, and none of this implies any exchange or market works with us.
08 / FAQ
Questions we get.
What do I actually get?
An API key. With it you can pull ML Storm Forecast by Address (ten perils), Model-Based Weather by Address, Model-Based Hourly Forecast by Address, Past Storm Leads by Address, Storm History by Address back to 2003, and hazard scores. US only.
What does it cost?
You prepay a balance, $25 minimum. Each call is deducted at the prices above. No subscription, no contract. The free previews cost nothing.
Can I use it for a Kalshi-type bot?
You can use it as an input to your own model. We sell data. We do not say what to trade, we do not promise anything about results, and nobody at any market has signed off on this. Check the rules of the market you trade on.
How good are the forecasts?
They show what could happen, not what will, and they can be wrong. We do not publish accuracy numbers here. Test it on your own history before you put money behind it.
How does an agent pay with x402?
It pays per call in USDC on Base from its own wallet, no account. Discovery file: data.truefixr.com/.well-known/x402.json.
Do I need to code?
Yes, a bit. It is a web API. The examples page has scripts you can copy, and an AI assistant can adapt them.
What is auto top-up?
Optional, off by default. If you switch it on, your saved card is charged the same amount when the balance falls under $5, at most once every 20 hours.
Who runs this?
GetFixn is operated by TrueFixR LLC. The data is by TrueFixR. We are not affiliated with NOAA or the National Weather Service.