Rencom's Search API helps AI agents and developers find and access paid APIs instantly using the x402 protocol.
x402 is an open protocol that brings native payments to HTTP. When the web was first designed, the creators reserved HTTP status code 402 Payment Required for a future where digital payments would be as simple as loading a webpage. That future is now.
Your application or AI agent makes a standard HTTP request to a paid API endpoint.
GET https://api.rencom.ai/x402/v1/paid/search?q=weather&sort_by=recommended&limit=3&offset=0The server responds with 402 Payment Required and includes payment requirements in the response headers.
HTTP/1.1 402 Payment Required
X-Payment: {
"price": "0.01",
"currency": "USDC",
"network": "base",
"payTo": "0x..."
}Your client signs a payment transaction and resends the request with payment proof. The server verifies and returns the resource instantly.
HTTP/1.1 200 OK{ "results": [...], "has_more": true }
As the x402 ecosystem grows, AI agents need a way to discover which APIs are available and find the best one for their task. Rencom's Search API indexes x402-enabled resources and ranks them by relevance, price, reliability, and popularity.
api.rencom.ai/x402/v1/paid/search$0.01/requestSearch x402 resources with x402 payment protocol. Same functionality as /x402/v1/search but requires x402 payment instead of API key. This endpoint is discoverable in the x402 Bazaar (in production).
// Example: Find trading APIs
GET /x402/v1/paid/search?q=crypto%20trading&sort_by=recommended&limit=3&offset=0
// Response
{
"results": [
{
"description": "Real-time trading data API with global coverage",
"final_score": 0.92,
"id": 123,
"max_amount_required": 1000000,
"network": "base",
"resource": "https://api.example.com/v1/trading"
}
],
"has_more": true,
"limit": 3,
"offset": 0,
"query": "trading api"
}Natural language queries powered by embeddings. Find APIs by describing what you need, not by knowing exact keywords.
Results ranked by relevance, historical success rates, price, and usage patterns. Sort by what matters to you.
Designed for AI agents to autonomously discover and select APIs. Clean JSON responses with all the metadata needed for decision-making.
No subscriptions or prepaid credits. Just $0.01 per search via x402. The API eats its own cooking.
The internet never got its payment layer. Instead, we got ads, data harvesting, and subscription fatigue. x402 changes this by making payments as native to HTTP as content itself. For AI agents, this is transformative.
AI agents can now discover, evaluate, and pay for services without human intervention. An agent researching stock prices can find and pay for market data APIs on its own.
Pay $0.001 for a single API call. No minimum commitments, no unused credits expiring. This unlocks business models that were previously impossible.
x402 is an open standard backed by Coinbase, Cloudflare, and others. Anyone can publish x402-enabled APIs. Anyone can build clients that pay for them.
Integrate Rencom's Search API to help your agents discover x402 resources, or explore the x402 protocol to enable payments on your own APIs.