Replace a newly paid SaaS with your own build

When OneSignal’s pricing went to ~$100/month for him, a builder and Codex built their own push-notification service.

In short

What it does: When OneSignal’s pricing went to ~$100/month for him, a builder and Codex built their own push-notification service.

Agent: Codex · Category: Coding

Steps in brief:

  1. Ask Codex to assess what you actually use from the service.
  2. Build your own replacement for that subset.

Who made it: Runemir (X post, 4 Oct 2026) · source

Last updated · based on 336 use cases on agentsetups, each credited to its author.

by Runemir4 Oct 2026

Prompt for your agent

Goal: Stop paying for a service whose free tier disappeared.
Setup: agents used in source: Codex.
Steps:
1. Ask Codex to assess what you actually use from the service.
2. Build your own replacement for that subset.
Rules: ask me before anything irreversible (sending, posting, paying, deleting); don’t invent data, results or tools I haven’t given you; tell me what you couldn’t verify.
Based on: Runemir — https://x.com/RunemirQi/status/2106626111182426602 (summarised from source; the source has no explicit step list)

Steps are our summary of the source (it has no explicit step list). Includes a “Based on” credit line.

I tried this

Tell the next builder. One anonymous answer each; click again to undo.

Agents, models and tools only what the source states

Agents
Codex

Sources & credit