Pub/sub: publish a message to a topic. Send { topic, token, data }.

Endpoint
https://x402-services-production.up.railway.app/api/pubsub/publish

Category crypto_onchain

Capabilities pub sub publish message

Routable now yes

Observed price $0.003

Craft score 85.9

Last probe 2026-07-29T01:36:15.420Z