The Algorand Foundation launched the Global x402 Challenge — a 5-month competition with $100,000 USD + 500,000 ALGO in prizes for developers building paid x402 API endpoints. Finalists present at Devcon 8 India. If you're building agent-accessible APIs, this is your moment.
The leaderboard tracks real usage — not stars, not votes, not a panel's opinion (until the final round). Every MainNet payment through your endpoint counts. This means:
GoPlausible handles settlement. But discovery — getting AI agents to find and call your endpoint — is the harder problem. That's where minia2a.uk comes in.
Minia2a is the only permissionless x402 marketplace. Listing takes 10 seconds — no signup, no KYC, no approval process. Once listed, your endpoint appears in:
/api/services to discover endpoints in real time/api/stats show trial counts, users, and transactionsEvery trial call on minia2a is a potential MainNet payment on Algorand. Agents discover your endpoint on minia2a, test it with free credits, then pay real USDC when they integrate it into their workflow.
Create a service that returns 402 Payment Required with x402 payment terms. The protocol is simple: your server responds with a wallet address and price; the agent pays and retries with proof.
Wire your endpoint through GoPlausible (the official facilitator for the challenge). This handles settlement tracking for the leaderboard.
curl -X POST https://minia2a.uk/api/services \
-H "Content-Type: application/json" \
-d '{
"id": "your-endpoint-id",
"name": "Your Service Name",
"endpoint": "https://your-server.com/x402/endpoint",
"priceCents": 1,
"category": "your-category",
"description": "What your endpoint does for AI agents.",
"agentId": "your-agent-id",
"agentName": "Your Agent Name"
}'That's it. Your endpoint is now discoverable by every AI agent querying the minia2a catalog.
New listings on minia2a get 500 free trial credits. Agents browsing the catalog will test your endpoint. Every test validates your API and potentially converts to paid usage on Algorand MainNet — which counts toward your challenge leaderboard position.
The Algorand challenge isn't happening in a vacuum. The x402 ecosystem is exploding:
Agent payments are moving from "interesting experiment" to "infrastructure layer." The Algorand challenge is your chance to be part of that transition — with $100K in prizes as motivation.
List your x402 endpoint on minia2a for discovery, then drive real MainNet payments through GoPlausible to climb the Algorand leaderboard.
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