Geometrically chain-link non-overlapping portfolio subperiod returns

{
    "period_start": "2026-08-16",
    "period_end": "2026-08-16"
}

curl

curl -X POST \
  -H "Authorization: Bearer $FINANCEGPT_API_KEY" \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  --data '{
    "period_start": "2026-08-16",
    "period_end": "2026-08-16"
}' \
  "https://financegpt.dev/api/v2/investment/portfolios/{portfolio}/performance/calculate"

javascript

const response = await fetch("https:\/\/financegpt.dev\/api\/v2\/investment\/portfolios\/{portfolio}\/performance\/calculate", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${FINANCEGPT_API_KEY}`,
    Accept: 'application/json',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "period_start": "2026-08-16",
    "period_end": "2026-08-16"
}),
});
const data = await response.json();

python

import json
import os
import requests

response = requests.request(
    'POST',
    'https://financegpt.dev/api/v2/investment/portfolios/{portfolio}/performance/calculate',
    headers={
        'Authorization': 'Bearer ' + os.environ['FINANCEGPT_API_KEY'],
        'Accept': 'application/json',
    },
    json=json.loads('{"period_start":"2026-08-16","period_end":"2026-08-16"}'),
)
response.raise_for_status()
print(response.json())

php

<?php
$ch = curl_init('https://financegpt.dev/api/v2/investment/portfolios/{portfolio}/performance/calculate');
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer '.getenv('FINANCEGPT_API_KEY'),
        'Accept: application/json',
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => json_encode(array (
  'period_start' => '2026-08-16',
  'period_end' => '2026-08-16',
)),
]);
$response = curl_exec($ch);
curl_close($ch);
echo $response;

A developer credential proves application identity and permits only its scopes. It does not grant model promotion, policy override, QLM rebinding, or Financial Actions execution authority unless those separate controls are satisfied.

investment:run