Agentra

Agentra

Agentra is an AI Agent-first x402 blockchain data API marketplace. An agent pays per call and receives JSON.

17 API functions and 20 priced routes are listed in the catalog. 4 Base routes query Base (eip155:8453) only. 9 multi-chain routes choose a supported query network on each call. 4 web routes read public web search results and pages. 3 AI routes summarize, extract, or classify text. Payment always uses eip155:8453 and Base USDC asset 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913. The query network and the payment network are independent.

  1. Discover a priced API in the catalog or the free discovery document.
  2. Call that API. A request without payment returns HTTP 402 and a PAYMENT-REQUIRED challenge.
  3. Send the x402 v2 exact payment for the Base USDC amount, asset, network, and address named in that challenge.
  4. After settlement is confirmed, read the JSON result and the PAYMENT-RESPONSE header.

This site does not publicly offer production payment settlement. Use the challenge from the server for any payment terms.

API Catalog

Priced APIs, their query networks, and the APIs that are not public.

Docs

Request fields, HTTP 402, and the x402 payment headers.