• ExchangeRebel — pay-per-call APIs for AI agents
  • Browse the catalogue (free)
  • How payment works (x402, USDC on Solana)
  • Coverage
  • Pricing

§ExchangeRebel — pay-per-call APIs for AI agents

A fleet of 59 services / 180 priced operations over plain HTTP. No account, no API key, no subscription: you pay per call, only for delivered answers.

§Browse the catalogue (free)

• Machine-readable catalogue: https://exchangerebel.com/openapi.json
• Agent summary: https://exchangerebel.com/llms.txt
• MCP server (184 tools): https://exchangerebel.com/mcp

§How payment works (x402, USDC on Solana)

1. Call any paid endpoint without payment.
2. The service replies HTTP 402 with the price, the receiving Solana wallet, and a payment memo.
3. Pay the stated amount in USDC on the Solana blockchain, including the memo.
4. Retry the call with the payment proof (the transaction signature).
5. The service verifies the payment on-chain and returns the answer. If no answer is delivered, the payment is not kept.

§Coverage

Market and company data, SEC filings, FRED macro series, FEC election finance, football data, scholarly search (OpenAlex), weather, flights, cryptocurrency data, and developer utilities.

§Pricing

Pay-per-call in USDC via x402 on Solana: most calls $0.005–$0.05. Every paid call states plainly what the payment includes. Catalogue browsing and free endpoints cost $0.