x402basequality 0.72

Generate a unique AI trivia question via Claude Sonnet 4.5 for 1.25 USDC on Base.

Price
1.25 USDC / call
Protocol
x402
Verified
no
Endpoint
https://proof-of-intelligence-mint-web.vercel.app/api/x402/question

What it does

This x402 endpoint generates a unique multiple-choice trivia question powered by Claude Sonnet 4.5. Each call costs 1.25 USDC (paid via the x402 protocol on Base), of which $1.00 goes to a POIC token LP pool and $0.25 covers gas and AI generation fees. The endpoint is part of the "Proof of Intelligence Mint" project, a gamified token-minting system where correct trivia answers earn 5000 POIC tokens.

The endpoint accepts a simple HTTP GET request with an x402 payment header. It returns a JSON object containing a trivia question with four multiple-choice options, the correct answer, an optional category and difficulty level, and a timestamp. The output schema is fully specified in the x402 challenge. There are no additional query parameters or request body fields documented.

The broader project tracks progress toward 100,000 mints, after which a Uniswap V4 liquidity pool is intended to auto-launch. As of the crawl, 225 of 100,000 mints have been completed. The POIC token contract is deployed on Base at 0xDCf65ACaf5BC4baDA3D3bb38834358dD6a8bA389. Payment is sent to 0x32d831cd322EB5DF497A1A640175a874b5372BF8 in USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base.

Capabilities

trivia-question-generationclaude-sonnet-4-5x402-paymentbase-networkusdc-paymentmultiple-choiceai-generated-contenttoken-minting-game

Use cases

  • —Automated trivia mining agents that answer questions to earn POIC tokens
  • —Building quiz or trivia applications with AI-generated questions
  • —Demonstrating x402 micropayment protocol integration on Base
  • —Gamified token distribution through knowledge-based challenges
  • —Testing autonomous agent workflows with paid API calls

Fit

Best for

  • —Developers exploring x402 protocol micropayments on Base
  • —Agents or bots that need fresh, unique trivia questions on demand
  • —Participants in the Proof of Intelligence Mint token game
  • —Builders prototyping pay-per-call AI endpoints

Not for

  • —High-volume free trivia question generation (each call costs 1.25 USDC)
  • —Production quiz platforms needing customizable difficulty, topic, or question count parameters
  • —Users without USDC on Base network

Quick start

# Requires x402 payment header with 1.25 USDC on Base
curl -X GET \
  https://proof-of-intelligence-mint-web.vercel.app/api/x402/question \
  -H 'X-PAYMENT: <x402-payment-token>'

Example

Response

{
  "id": "abc123-def456",
  "options": [
    "Saturn",
    "Jupiter",
    "Neptune",
    "Uranus"
  ],
  "category": "Science",
  "question": "What is the largest planet in our solar system?",
  "timestamp": 1719500000000,
  "difficulty": "Easy",
  "correctAnswer": "Jupiter"
}

Endpoint

URLhttps://proof-of-intelligence-mint-web.vercel.app/api/x402/question
Transporthttp
Protocolx402
Pay to0x32d831cd322EB5DF497A1A640175a874b5372BF8
CurrencyUSD COIN

Quality

0.72/ 1.00

The x402 challenge is live and includes a complete output schema with required fields. The landing page provides clear pricing and project context. However, there are no formal API docs, no OpenAPI spec, and no documented input parameters beyond the bare GET request. The example response is inferred from the output schema rather than captured from a real call.

Warnings

  • —No formal API documentation or OpenAPI spec available
  • —No input parameters documented — unclear if category/difficulty can be specified
  • —The POIC token and LP pool are early-stage (225/100,000 mints); project viability is unproven
  • —Example response is synthesized from the output schema, not from an actual API response

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 19:30:27Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/KN7hkc