Artha

What it does

Artha gives developers instant access to financial data — stocks, crypto prices, fundamentals, and SEC filings — through a single REST API. What makes it different: no monthly subscription. You pay per API call in USDC on Base, using the x402 protocol. Connect your wallet once, and x402-fetch handles payments automatically in the background. Built for developers who want to ship fast without committing to a data plan.

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  x4022025 · ▲119

  An open protocol for internet-native payments from Coinbase

• XA
  X402 – an open standard for internet native payments2025 · x402.org · ▲16

  Hi HN – excited to announce x402, initially developed by Coinbase (YC 12) x402 lets any HTTP API charge per request without issuing API keys or storing credit cards. Buyers (humans or AI agents) keep funds in their own wallet and dynamically discover compatible endpoints, call them as usual, and automatically pay a microtransaction in USDC or other tokens to settle. 90 second demo: https://www.youtube.com/watch?v=PV-L2AfLhJg Problem: Every time we want to use a new API we have to: find the service online create a developer account, copy a secret key into env vars, pre-fund or…

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