Submit trivia answers via x402 on Base to mint POIC tokens for correct responses.
What it does
Proof of Intelligence Mint is an x402-powered endpoint on Base that accepts trivia answers and mints POIC tokens to the caller's wallet when the answer is correct. Each call costs approximately 1000 units of USDC (the x402 challenge's maxAmountRequired), which the landing page describes as $1.25 USDC per question — $1.00 goes toward a Uniswap V4 LP pool and $0.25 covers gas and AI question-generation fees. On a correct answer, 5000 POIC tokens are minted directly to the provided wallet address.
The endpoint accepts a POST with three JSON body fields: `questionId` (string), `answer` (string), and `walletAddress` (string). The response includes a boolean `correct` field, a `message`, and optionally a `txHash` (the POIC mint transaction) and `usdcTxHash`. If something goes wrong, an `error` string is returned. Questions are generated by an AI model (the site references Claude Sonnet 4.5) and are multiple-choice with four options. A companion "Intelligence Miner" agent is available on x402scan that can automate the question-answering loop.
The project is gamified around a fictional "Department of Cognition" narrative. The POIC token is deployed on Base at 0xDCf65ACaf5BC4baDA3D3bb38834358dD6a8bA389 with a total supply of 500M. After 100,000 successful mints, the accumulated USDC LP pool is intended to auto-launch on Uniswap V4. As of the crawl, 225 of 100,000 mints have been completed.
Capabilities
Use cases
- —Answering AI-generated trivia questions to earn POIC tokens on Base
- —Automating trivia answering via an x402 agent for continuous POIC accumulation
- —Building bots or agents that interact with gamified on-chain reward systems
- —Participating in early-stage token distribution before Uniswap V4 LP launch
Fit
Best for
- —Developers building x402-compatible autonomous agents on Base
- —Crypto enthusiasts interested in gamified token minting
- —Agent builders exploring x402 payment protocol integrations
Not for
- —Users seeking a free trivia API — every call requires USDC payment via x402
- —Anyone looking for a stable or established token — POIC has no market price yet and the LP pool has not launched
- —Production applications needing guaranteed uptime or SLAs
Quick start
curl -X POST https://proof-of-intelligence-mint-web.vercel.app/api/x402/answer \
-H 'Content-Type: application/json' \
-H 'X-PAYMENT: <x402_payment_header>' \
-d '{"questionId": "abc123", "answer": "Paris", "walletAddress": "0xYourWalletAddress"}'Example
Request
{
"answer": "Paris",
"questionId": "abc123",
"walletAddress": "0x1234567890abcdef1234567890abcdef12345678"
}Response
{
"txHash": "0xabc123def456...",
"correct": true,
"message": "Correct! 5000 POIC tokens minted to your wallet.",
"usdcTxHash": "0x789ghi012jkl..."
}Endpoint
Quality
The x402 challenge is live with a well-defined outputSchema covering input and output fields. The landing page provides clear pricing and mechanics. However, there is no OpenAPI spec, no dedicated docs page, and no information on how to obtain a valid questionId before submitting an answer — the endpoint appears to be part of a larger game flow that is not fully documented for standalone API use.
Warnings
- —No dedicated API documentation exists (docs, pricing, README all return 404)
- —It is unclear how to obtain a valid questionId without using the web UI or the x402scan agent — the answer endpoint alone may not be independently useful
- —POIC token has no established market value; the Uniswap V4 LP pool has not launched yet
- —The example response is inferred from the output schema — no actual successful response was captured
- —This involves cryptocurrency token minting — regulatory considerations may apply
Citations
- —Each question costs 1.25 USDC: $1.00 builds the LP pool, $0.25 covers gas and AI generation feeshttps://proof-of-intelligence-mint-web.vercel.app
- —Correct answers mint 5000 POIC tokens to the caller's wallethttps://proof-of-intelligence-mint-web.vercel.app
- —225 of 100,000 mints have been completedhttps://proof-of-intelligence-mint-web.vercel.app
- —POIC token is deployed at 0xDCf65ACaf5BC4baDA3D3bb38834358dD6a8bA389 with 500M total supplyhttps://proof-of-intelligence-mint-web.vercel.app
- —Questions are generated by Claude Sonnet 4.5https://proof-of-intelligence-mint-web.vercel.app
- —After 100k mints the LP pool auto-launches on Uniswap V4https://proof-of-intelligence-mint-web.vercel.app
- —x402 challenge returns maxAmountRequired of 1000 with USDC asset on Basehttps://proof-of-intelligence-mint-web.vercel.app/api/x402/answer
- —The endpoint accepts POST with bodyFields questionId, answer, walletAddresshttps://proof-of-intelligence-mint-web.vercel.app/api/x402/answer