---
title: List your service
description: Submit an HTTP(S) endpoint that accepts x402 or MPP payments for review by the Superstables index. Listing is free.
canonical: https://staging-next.superstables.com/submit
last-updated: 2026-10-04
---

# List your service

Submit an HTTP(S) endpoint for review. We probe it right away; once it's approved, it appears in Discover
and is checked regularly. Listing is free.

## Submit with the form

https://staging-next.superstables.com/submit

## Submit with the API

    curl -X POST https://staging-next.superstables.com/api/v1/submit \
      -H "Content-Type: application/json" \
      -d '{"endpoint":"https://api.example.com/v1/priced","name":"Example API","contact":"ops@example.com"}'

- endpoint (required): the http(s) URL that answers the payment challenge.
- name (optional): how the service should be shown.
- contact (optional): how we can reach you about the listing; used for nothing else.
- Idempotency-Key header (optional): repeated submissions of the same endpoint within 24 hours are deduplicated.

Responses: 200 { ok: true } (or { ok: true, deduplicated: true }); 400 with { error: { code, message } } for
invalid_json or invalid_endpoint. Spec: https://staging-next.superstables.com/openapi.json

## What happens next

New submissions enter the review queue and require approval before they enter the directory crawl
pipeline. Each listed service's probe history is public on its service page.

## Corrections

For a correction, [contact us](https://staging-next.superstables.com/contact) with the service ID and the details to change.
Repeating an endpoint submission within 24 hours does not update the earlier submission.