Pubsub Publish

PUBSUB: publish a message to a topic YOU own, fanning out a signed callback to every CONFIRMED subscriber.

Overview

PUBSUB: publish a message to a topic YOU own, fanning out a signed callback to every CONFIRMED subscriber. Returns the number of subscribers it was delivered to. Only the topic owner (the x402 payer who created it) can publish. Message is arbitrary JSON (≤64 KB). Priced by confirmed-subscriber count (a small base + per subscriber), so you pay for the fan-out you request. Delivery is at-least-once with retry + signature.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/pubsub-publish	$0.0023	Invoke Pubsub Publish (General) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/pubsub-publish \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/pubsub-publish \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace