API & Agents

Every endpoint here is callable directly and paid per request with x402 on Base. No account, no API key - an agent that speaks x402 discovers the 337 endpoints, gets a price, signs a USDC payment, and retries.

Call an endpoint

# 1. Unpaid request returns 402 with the price and payment details
curl -sD - -X POST https://based-seo.com/api/v3/backlinks/summary/live \
  -H 'content-type: application/json' \
  -d '{"target":"example.com"}'

# 2. An x402 client signs a USDC payment and retries automatically.
#    Any conforming x402 library handles the 402 -> pay -> retry loop.

Machine-readable

Endpoint manifestEvery endpoint, its params and price, as JSON.

OpenAPI 3.1Import into any client or codegen tool.

llms.txtA signpost for AI agents discovering the API.