X Profile

{
  "beliefs": [
    {
      "claim": "Favours L1 simplicity over throughput maximalism.",
      "confidence": "high",
      "post_ids": [
        "1950000000000000001"
      ]
    }
  ],
  "confidence": "medium",
  "display_name": "vitalik.eth",
  "gaps": [
    "No posts bearing on position sizing in the window."
  ],
  "handle": "vitalikbuterin",
  "information_processing": {
    "changes_mind_when": "shown a concrete counterexample",
    "evidence_preference": "formal arguments and measured data over narrative",
    "handles_ambiguity": "states explicit probabilities",
    "post_ids": [
      "1950000000000000001"
    ],
    "style": "decomposes into first principles then bounds the uncertainty"
  },
  "interests": [
    {
      "post_ids": [
        "1950000000000000001"
      ],
      "topic": "protocol decentralisation",
      "weight": 0.9
    }
  ],
  "meta": {
    "cache_hit": false,
    "cache_ttl_days": 30,
    "coverage": "sampled",
    "max_research_turns": 3,
    "reasoning_effort": "high",
    "research_mode": "adaptive"
  },
  "recommendation_hints": {
    "avoid": [
      "hype framing",
      "short-dated leverage"
    ],
    "market_categories": [
      "crypto",
      "technology"
    ],
    "tone": "technical, uncertainty-explicit"
  },
  "risk_profile": {
    "position_sizing": "rarely discusses sizing",
    "post_ids": [
      "1950000000000000001"
    ],
    "posture": "long-horizon, low leverage",
    "reaction_to_loss": "publishes model revisions",
    "time_horizon": "multi-year"
  },
  "tendencies": [
    {
      "description": "Restates the strongest counterargument before answering it.",
      "post_ids": [
        "1950000000000000001"
      ],
      "trait": "steelmans opposing arguments"
    }
  ],
  "window": {
    "from_date": "2025-08-09",
    "lookback_days": 365,
    "post_count": 36,
    "to_date": "2026-08-09"
  }
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://quotient-api-gateway.onrender.com/api/v1/x/profile' \
  -H 'content-type: application/json' \
  --data-raw '{"focus":"trading","handle":"vitalikbuterin","lookback_days":365}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://quotient-api-gateway.onrender.com/api/v1/x/profile' \
  -H 'content-type: application/json' \
  --data-raw '{"focus":"trading","handle":"vitalikbuterin","lookback_days":365}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $1 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$1" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $1 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fquotient-api-gateway.onrender.com%2Fapi%2Fv1%2Fx%2Fprofile&method=POST
const res = await pay("https://quotient-api-gateway.onrender.com/api/v1/x/profile", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "focus": "trading",
    "handle": "vitalikbuterin",
    "lookback_days": 365
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $1 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$1"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://quotient-api-gateway.onrender.com/api/v1/x/profile",
        json={
            "focus": "trading",
            "handle": "vitalikbuterin",
            "lookback_days": 365,
        },
    )
    print(res.status_code, res.text)