Explore APIs

Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.

Projects: 4.4K
Paid endpoints: 87K
Paid calls · 30 days: 885K
Launched here: 0

All projects

153 results

Most used Rising Most payers Newest Cheapest A–Z

Y
yiduochan.comImages, audio & video
Buy $0.10 of prepaid credits for the YiduoChan inference gateway and receive a working API key in the response. The key works with any OpenAI-compatible client against https://yiduochan.com/v1 and covers chat, reasoning, text-to-speech, image and video models. Credits are spent per token at published rates; no account, email or signup is required.
Arbitrumyiduochan.com
from $0.01
2 endpoints
0
calls / 30d
SyraCrypto & DeFi
Lists conferences, launches, listings, and macro events affecting crypto. Use when an agent schedules research around catalysts or filters noise by ticker. Input: optional ticker. Returns event[] with titles, dates, and metadata.
SolanaBasePolygon+6api.syraa.fun
from $0.0001
61 endpoints
0
calls / 30d
A
altairworld.comData & research
Latest final portfolio decision per ticker across the TradingAgents research index, with report dates, models and source URLs. Optional ticker and inclusive date filters; ten-minute cache. Free three-ticker preview at /api/research/signals/sample.
BaseArbitrumaltairworld.com
from $0.01
1 endpoint
0
calls / 30d

Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.