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Correlation
by Correlation (Pearson) in Markets & finance
x402 APIPassing, checked 10 min ago
Pearson correlation coefficient between two equal-length numeric series. Returns r (the correlation, -1 to 1), r² (variance explained), n (sample size). Use this to ask things like: is a stock's daily return correlated with a macro indicator? Are two FRED series moving together?
POST https://agent402.tools/api/correlation
Last 30 days
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- Uptime
- 100%
- Response time
- 185 ms typical, 185 ms slowest 5%
- Last check
- 10 min ago
- Next check
- in 23 min
How to call it
# See the payment challenge (nothing is charged)
curl -i -X POST "https://agent402.tools/api/correlation" \
-H "content-type: application/json" \
-d '{"x":[1,2,3,4,5],"y":[2,4,6,8,10]}'import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
const client = new x402Client().register(
"eip155:8453",
new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);
// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fagent402.tools%2Fapi%2Fcorrelation
const res = await pay("https://agent402.tools/api/correlation", {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({"x":[1,2,3,4,5],"y":[2,4,6,8,10]}),
});
console.log(await res.json());Example input
{
"x": [
1,
2,
3,
4,
5
],
"y": [
2,
4,
6,
8,
10
]
}Example output
{
"interpretation": "perfect positive linear relationship",
"n": 5,
"r": 1,
"rSquared": 1
}Security scan
- No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.
Recent checks
| When | Result | HTTP | Time | Price |
|---|---|---|---|---|
| 10 min ago | Passed | 402 | 185 ms | $0.001 |
| 5 h ago | Passed | 402 | 297 ms | $0.001 |